Method and device for determining oilfield modified production mode and computer storage medium

Abstract

The embodiment of the application discloses a kind of oilfield modified production mode determination method, device and computer storage medium, belong to oil and gas technical field.The method comprises: obtaining the insensitive parameter corresponding to each well group in a plurality of well groups in target oilfield, the insensitive parameter corresponding to each well group is used to describe the modification difficulty of corresponding well group;Determine the target assignment number set corresponding to a plurality of well groups, the target assignment number set is the assignment number set for the maximum parameter value of the insensitive parameter of a plurality of well groups and the annual output of target oilfield meet target constraint condition, a plurality of assignment numbers of target assignment number set correspond to a plurality of well groups one by one, and any assignment number in a plurality of assignment numbers is used to indicate the production mode of corresponding well group;The production mode of well group indicated by target assignment number set is determined as the modified production mode of target oilfield.The embodiment of the application is modified by mutual fusion between well groups, without additional modification agent, thereby reducing the development cost of oilfield.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the oil and gas technology field, and particularly relate to a method and device for determining a modified production mode of an oilfield and a computer storage medium. BACKGROUND

[0002] Currently, the factors of oil price change are increasingly complex, and the requirements for the production level and economic benefits of an oilfield are increasingly high. Therefore, it is necessary to further improve the current production mode of the oilfield to improve the economic benefits.

[0003] An oilfield includes a single-source accumulation oilfield and a multi-source accumulation oilfield. For the single-source accumulation oilfield, a "good block first" production mode can be adopted, or a "full life cycle" production mode for maximizing benefits by increasing cumulative oil production in the life cycle can be adopted. For the multi-source accumulation oilfield, because the current production mode considers less interaction of various factors, heat preservation transportation, agent modification transportation, and sequential transportation are generally used in ground construction. For the multi-source accumulation oilfield, because there is some thin oil in the region, the most ideal way is to use the thin oil in the region to modify the transportation of crude oil.

[0004] However, when the thin oil is used to modify the crude oil, it is required to fully integrate the thin oil source. If the thin oil is not fully integrated, effective modification cannot be performed, and external input of the thin oil greatly increases the production capacity construction cost. At the same time, because the multi-source accumulation oilfield generally includes more fault blocks and more single wells can be deployed, the production capacity and the properties of crude oil are greatly different between the single wells. Artificial determination of the production mode of the oilfield not only increases the workload of the staff, but also has large calculation amount and is prone to errors, resulting in uncertainty of the modified production and inability to maximize the economic benefits of the oilfield. SUMMARY

[0005] Embodiments of the present application provide a method and device for determining a modified production mode of an oilfield and a computer storage medium, which can solve the problem of high oilfield production cost in the related art. The technical solution is as follows:

[0006] In one aspect, a method for determining a modified production mode of an oilfield is provided, and the method includes:

[0007] obtaining a non-sensitive parameter corresponding to each well group in a plurality of well groups in a target oilfield, the non-sensitive parameter corresponding to each well group being used to describe the modification difficulty of the corresponding well group, and each well group including a plurality of single wells;

[0008] determining a target assignment number set corresponding to the plurality of well groups, the target assignment number set being a set of assignment numbers that make the maximum parameter value of the insensitivity parameter of the plurality of well groups and the annual production of the target oilfield satisfy a target constraint condition, a plurality of assignment numbers in the target assignment number set corresponding to the plurality of well groups one by one, and any assignment number in the plurality of assignment numbers being used to indicate a production mode of a corresponding well group;

[0009] determining the production mode of the well group indicated by the target assignment number set as a modified production mode of the target oilfield.

[0010] In some embodiments, the obtaining of the insensitivity parameter corresponding to each well group in the plurality of well groups in the target oilfield comprises:

[0011] dividing the target oilfield according to a well division principle to obtain the plurality of well groups;

[0012] obtaining a mixed freezing point and a mixed viscosity of crude oil in each well group in the plurality of well groups after mixing;

[0013] determining the insensitivity parameter of each well group according to the mixed freezing point and the mixed viscosity of the well group.

[0014] In some embodiments, the determining of the target assignment number set corresponding to the plurality of well groups comprises:

[0015] determining a plurality of assignment number sets corresponding to the plurality of well groups, a plurality of assignment numbers in each assignment number set in the plurality of assignment number sets corresponding to the plurality of well groups one by one;

[0016] selecting a reference assignment number set from the plurality of assignment number sets, the reference assignment number set being any assignment number set that is not selected in the plurality of assignment number sets;

[0017] determining the maximum parameter value of the insensitivity parameter of the plurality of well groups and the annual production of the target oilfield according to the production mode described by the reference assignment number set and the insensitivity parameter corresponding to each well group;

[0018] when the maximum parameter value of the insensitivity parameter of the plurality of well groups does not satisfy the target constraint condition, or the annual production of the target oilfield does not satisfy the target constraint condition, returning to the operation of selecting a reference assignment number set from the plurality of assignment number sets until the maximum parameter value of the insensitivity parameter of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition;

[0019] when the maximum parameter value of the insensitivity parameter of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition, determining the reference assignment number set as the target assignment number set.

[0020] In some embodiments, after the obtaining of the insensitive parameter corresponding to each well group in the plurality of well groups in the target oilfield, the method further comprises:

[0021] determining a modification difficulty of each well group according to the parameter value of the insensitive parameter of each well group;

[0022] determining a production mode corresponding to each well group according to the modification difficulty of each well group.

[0023] In some embodiments, the determining of the production mode corresponding to each well group according to the modification difficulty of each well group comprises:

[0024] when the modification difficulty of each well group is a first level or a second level, performing an operation of determining a target assignment number set corresponding to the plurality of well groups;

[0025] when there is a well group with a third level modification difficulty in the plurality of well groups, producing the well group with the third level modification difficulty by means of heat preservation and heating delivery, skin effect delivery and / or additive modification delivery.

[0026] In another aspect, a device for determining an oilfield modification production mode is provided, the device comprising:

[0027] an obtaining module configured to obtain an insensitive parameter corresponding to each well group in a plurality of well groups in a target oilfield, the insensitive parameter corresponding to each well group being used to describe a modification difficulty of the corresponding well group, and each well group comprising a plurality of single wells;

[0028] a first determining module configured to determine a target assignment number set corresponding to the plurality of well groups, the target assignment number set being a set of assignment numbers that satisfy a target constraint condition for the maximum parameter value of the insensitive parameters of the plurality of well groups and the annual output of the target oilfield, a plurality of assignment numbers in the target assignment number set corresponding to the plurality of well groups one by one, and any assignment number in the plurality of assignment numbers being used to indicate a production mode of the corresponding well group;

[0029] a second determining module configured to determine the production mode of the well group indicated by the target assignment number set as the modification production mode of the target oilfield.

[0030] In some embodiments, the obtaining module comprises:

[0031] a dividing sub-module configured to divide the target oilfield according to an oil well division principle to obtain the plurality of well groups;

[0032] an acquisition sub-module, configured to acquire a mixed freezing point and a mixed viscosity of crude oil in each of the plurality of well groups after mixing;

[0033] a first determination sub-module, configured to determine an insensitivity parameter of each of the plurality of well groups according to the mixed freezing point and the mixed viscosity of the each of the plurality of well groups.

[0034] In some embodiments, the first determination module includes:

[0035] a second determination sub-module, configured to determine a plurality of assignment number sets corresponding to the plurality of well groups, a plurality of assignment numbers in each of the plurality of assignment number sets corresponding to the plurality of well groups one by one;

[0036] a selection sub-module, configured to select a reference assignment number set from the plurality of assignment number sets, the reference assignment number set being any assignment number set in the plurality of assignment number sets that is not selected;

[0037] a third determination sub-module, configured to determine a maximum parameter value of the insensitivity parameter of the plurality of well groups and an annual production of the target oilfield according to a production mode described by the reference assignment number set and the insensitivity parameter corresponding to the each of the plurality of well groups;

[0038] a triggering sub-module, configured to trigger the selection sub-module to select a reference assignment number set from the plurality of assignment number sets when the maximum parameter value of the insensitivity parameter of the plurality of well groups does not satisfy the target constraint condition or the annual production of the target oilfield does not satisfy the target constraint condition, until the maximum parameter value of the insensitivity parameter of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition;

[0039] a fourth determination sub-module, configured to determine the reference assignment number set as the target assignment number set when the maximum parameter value of the insensitivity parameter of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition.

[0040] In some embodiments, the apparatus further includes:

[0041] a third determination module, configured to determine a modified difficulty of each of the plurality of well groups according to the parameter value of the insensitivity parameter of the each of the plurality of well groups;

[0042] a fourth determination module, configured to determine a production mode corresponding to each of the plurality of well groups according to the modified difficulty of the each of the plurality of well groups.

[0043] In some embodiments, the fourth determination module is configured to:

[0044] When the modification difficulty degree of each well group is a first degree or a second degree, the operation of determining the target assignment number set corresponding to the plurality of well groups is performed;

[0045] When the plurality of well groups exist the well group with the third degree of modification difficulty, the well group with the third degree of modification difficulty is put into production by the heat preservation heating delivery mode, the skin effect delivery mode and / or the additive modification delivery mode.

[0046] In another aspect, a computer readable storage medium is provided, and the computer readable storage medium stores instructions, and the instructions are executed by a processor to implement any step of the determination method of the oilfield modification production mode.

[0047] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0048] In the embodiments of the present application, the modification production mode of the target oilfield can be determined according to the parameter values of the insensitive parameters of the plurality of well groups and whether the annual production of the target oilfield meets the target constraint condition, a standard for oilfield modification is provided, and the modification is performed by the mutual fusion between the existing well groups, without the need to add additional modifiers, thereby reducing the development cost of the oilfield and improving the oilfield production and crude oil delivery efficiency. At the same time, since the staff does not need to manually calculate and determine the production mode, the accuracy and efficiency of determining the oilfield production mode are improved. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0050] Figure 1 is a flow chart of a determination method of an oilfield modification production mode provided by the embodiments of the present application;

[0051] Figure 2 is a flow chart of another determination method of an oilfield modification production mode provided by the embodiments of the present application;

[0052] Figure 3 is a structural schematic diagram of a determination device of an oilfield modification production mode provided by the embodiments of the present application;

[0053] Figure 4 is a structural schematic diagram of an acquisition module provided by the embodiments of the present application;

[0054] Figure 5 is a structural schematic diagram of a first determination module provided by the embodiments of the present application;

[0055] Figure 6 is a structural schematic diagram of another oilfield modified production mode determination device provided by the embodiment of the present application;

[0056] Figure 7 is a structural schematic diagram of a terminal provided by the embodiment of the present application. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0058] Before a kind of oilfield modified production mode determination method provided by the embodiment of the present application is explained in detail, a kind of application scene provided by the embodiment of the present application is explained first.

[0059] Multi-source accumulation oil field refers to the multi-source hydrocarbon supply, multi-period accumulation of multiple sets of oil-bearing layer oil field formed in oil depression. The geological conditions of such oil field are complex, the oil and gas resources are abundant, and the oil types are various, which often include low freezing oil, conventional oil, high freezing oil and various oil reservoirs. For such reservoirs, it is usually impossible to produce by "good block first" production mode, or to adopt "full life cycle" production mode to maximize the benefit. Therefore, for multi-source accumulation oil field, dilute oil is used to realize the exploitation or normal temperature transportation of high freezing point reservoirs. However, when dilute oil is used to modify crude oil, it is required to fully integrate dilute oil sources. If dilute oil is not fully integrated, it cannot be effectively modified, and external input of dilute oil greatly increases the cost of capacity construction. At the same time, since multi-source accumulation oil field generally contains more fault blocks, more single wells can be deployed, and the capacity and crude oil properties of each single well are quite different. Artificial determination of oil field production mode not only increases the workload of staff, but also has large calculation amount and is prone to error, which leads to uncertainty of modified production and cannot maximize the economic benefit of oil field.

[0060] Based on such application scene, the embodiment of the present application provides an oilfield modified production mode determination method capable of reducing oilfield exploitation cost and improving oilfield economic benefit.

[0061] Figure 1 is a flow chart of an oilfield modified production mode determination method provided by the embodiment of the present application. The oilfield modified production mode determination method can include the following steps:

[0062] Step 101: acquiring the insensitive parameter corresponding to each well group in the target oil field, the insensitive parameter corresponding to each well group is used to describe the modification difficulty of the corresponding well group, and each well group includes a plurality of single wells.

[0063] Step 102: determining a target assignment number set corresponding to the plurality of well groups, the target assignment number set being a set of assignment numbers that make the maximum parameter value of the insensitivity parameter of the plurality of well groups and the annual production of the target oilfield satisfy a target constraint condition, a plurality of assignment numbers in the target assignment number set corresponding to the plurality of well groups one by one, and any assignment number in the plurality of assignment numbers being used to indicate a production mode of a corresponding well group.

[0064] Step 103: determining the production mode of the well group indicated by the target assignment number set as the modified production mode of the target oilfield.

[0065] In the embodiments of the present application, the modified production mode of the target oilfield can be determined according to the parameter value of the insensitivity parameter of the plurality of well groups and whether the annual production of the target oilfield satisfies the target constraint condition, a standard is provided for oilfield modification, and the modification is performed by mutual fusion between the existing well groups, without the need to add modifiers, thereby reducing the development cost of the oilfield and improving the oilfield production and crude oil transportation efficiency. At the same time, since the staff does not need to manually calculate and determine the production mode, the accuracy and efficiency of determining the production mode of the oilfield are improved.

[0066] In some embodiments, the insensitivity parameter corresponding to each well group in the plurality of well groups in the target oilfield is obtained, including:

[0067] The target oilfield is divided according to the well division principle to obtain the plurality of well groups;

[0068] The mixed freezing point and mixed viscosity of the crude oil in each well group in the plurality of well groups after mixing are obtained;

[0069] The insensitivity parameter of each well group is determined according to the mixed freezing point and mixed viscosity of the well group.

[0070] In some embodiments, the target assignment number set corresponding to the plurality of well groups is determined, including:

[0071] A plurality of assignment number sets corresponding to the plurality of well groups are determined, a plurality of assignment numbers in each assignment number set in the plurality of assignment number sets corresponding to the plurality of well groups one by one;

[0072] A reference assignment number set is selected from the plurality of assignment number sets, the reference assignment number set being any assignment number set that is not selected in the plurality of assignment number sets;

[0073] The maximum parameter value of the insensitivity parameter of the plurality of well groups and the annual production of the target oilfield are determined according to the production mode described by the reference assignment number set and the insensitivity parameter corresponding to each well group.

[0074] When the maximum parameter value of the insensitivity parameter of the multiple well groups does not satisfy the target constraint condition or the annual production of the target oilfield does not satisfy the target constraint condition, returning to the operation of selecting a reference assignment number set from the multiple assignment number sets until the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield satisfy the target constraint condition;

[0075] When the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield satisfy the target constraint condition, determining the reference assignment number set as the target assignment number set.

[0076] In some embodiments, after obtaining the insensitivity parameter corresponding to each well group in the multiple well groups in the target oilfield, the method further includes:

[0077] According to the parameter value of the insensitivity parameter of each well group, determining a modified difficulty of each well group;

[0078] According to the modified difficulty of each well group, determining a production mode corresponding to each well group.

[0079] In some embodiments, according to the modified difficulty of each well group, determining the production mode corresponding to each well group includes:

[0080] When the modified difficulty of each well group is a first level or a second level, performing the operation of determining the target assignment number set corresponding to the multiple well groups;

[0081] When there is a well group with a third level of modified difficulty in the multiple well groups, producing the well group with the third level of modified difficulty by means of heat preservation and heating delivery, skin effect delivery, and / or additive modification delivery.

[0082] All the optional technical solutions described above can be combined to form optional embodiments of the present application, and the embodiments of the present application will not be described one by one.

[0083] Figure 2 is a flow chart of a method for determining an oilfield modification production mode provided by an embodiment of the present application. The method for determining the oilfield modification production mode is used in a terminal for example, and can include the following steps:

[0084] Step 201: A terminal obtains an insensitivity parameter corresponding to each well group in a plurality of well groups in a target oilfield. The insensitivity parameter corresponding to each well group is used to describe the modified difficulty of the corresponding well group, and each well group includes a plurality of single wells.

[0085] Since the insensitive parameter can describe the modification difficulty of the corresponding well group, in order to improve the mining efficiency and reduce the mining cost of the target oilfield, the terminal can obtain the insensitive parameter corresponding to each well group.

[0086] As an example, the operation of the terminal obtaining the insensitive parameter corresponding to each well group in the plurality of well groups in the target oilfield at least includes the following operations: dividing the target oilfield according to the well division principle to obtain a plurality of well groups; obtaining the mixed freezing point and the mixed viscosity of the crude oil in each well group in the plurality of well groups after mixing; and determining the insensitive parameter of each well group according to the mixed freezing point and the mixed viscosity of each well group.

[0087] Since in general, when the oilfield is mined, the blocks or single wells with a relatively short distance are put into production in the same stage, the decline rate of the oilfield is considered, the annual decline production is considered, and the yield of one well group is tried to make up, therefore, generally, 2-4 single wells with a relatively short distance are considered to be put into production in the same stage. Therefore, the well division principle can divide the first preset number of single wells adjacent to and continuously distributed into one well group, and / or divide the block with a reserve greater than the preset reserve and including a number of single wells greater than the second preset number into N well groups, N is a positive integer greater than or equal to 1.

[0088] It should be noted that the first preset number can be set in advance, for example, the first preset number can be 2, 3, 3, etc.; the second preset number can also be set in advance, for example, the second preset number can be 4, 6, 8, 10, etc., according to the different second preset numbers, the value of N is also different, for example, when the second preset number is 4, N can be 1 or 2, when the second preset number is 6, N can be 1, 2 or 3, when the second preset number is 10, N can be 1, 2 or 3, etc. The preset reserve can also be set in advance, for example, the preset reserve can be 10 tons, 20 tons, etc.

[0089] In some embodiments, the terminal can obtain the mixed freezing point and the mixed viscosity of the crude oil in each well group after mixing when receiving the acquisition instruction, the acquisition instruction can be triggered when the staff acts on the terminal through the specified operation, the specified operation can be a click operation, a sliding operation, an input operation, etc. When the specified operation is an input operation, it means that the staff inputs the mixed freezing point and the mixed viscosity of the crude oil in each well group to the terminal, so that the terminal obtains them.

[0090] As an example, for any well group in the plurality of well groups, the terminal can obtain the freezing point and the viscosity of each single well in the well group, and determine the mixed freezing point of the well group according to the following crude oil freezing point modification law formula (1), and determine the mixed viscosity of the well group according to the following crude oil viscosity modification law formula (2).

[0091] T = X1T1+ T2X2+... + XnTn+ Tn+1Xn+1+... + Tn+1Xn+1 n T n (1)

[0092]

[0093] It should be noted that in the above crude oil solidification point modification rule formula (1), X n is the ratio of the n th single well crude oil participation amount to the total amount, T n is the solidification point of the n th single well crude oil, and T is the mixed solidification point. In the above crude oil viscosity modification rule formula (2), μ is the mixed viscosity, μ n is the viscosity of the n th single well crude oil, and μ 1 / n is the viscosity after mixing the n single well crude oils with equal mass or equal volume.

[0094] As an example, the terminal determines the insensitive parameter of each well group according to the mixed solidification point and the mixed viscosity of each well group, and the operation at least includes the following operations: for any well group, the terminal compares the mixed solidification point of the well group with the solidification point of the crude oil of each single well in the well group, and compares the mixed viscosity of the well group with the viscosity of the crude oil of each single well in the well group; when the solidification point change value between the mixed solidification point and the solidification point of the crude oil of each single well is less than a first change threshold, the mixed solidification point is determined as the insensitive parameter; when the viscosity change value between the mixed viscosity and the viscosity of the crude oil of each single well is less than a second change threshold, the mixed viscosity is determined as the insensitive parameter.

[0095] It should be noted that the first change threshold and the second change threshold can be set in advance according to requirements, for example, the first change threshold can be 18 degrees Celsius, 20 degrees Celsius, 36 degrees Celsius, etc. The second change threshold can be 9 map.s, 15 map.s, etc.

[0096] As an example, the terminal can also directly determine the mixed solidification point as the insensitive parameter of each well group in the plurality of well groups.

[0097] In some embodiments, the staff can previously perform physical property tests on the crude oil in each single well in the target oilfield to obtain physical property parameters of the crude oil in each single well, for example, the physical property parameters include the relative density, solidification point, wax content, asphaltene content, viscosity, etc. of the crude oil. Then, the staff can input the obtained physical property parameters into the terminal, so that the terminal can obtain the solidification point and the viscosity of each single well.

[0098] In some embodiments, since the modification effect of some well groups is not good after mixing, it is difficult to meet the economic transportation requirements, therefore, after obtaining the insensitivity parameters corresponding to each well group in the target oilfield, the terminal can determine the modification difficulty of each well group according to the parameter values of the insensitivity parameters of each well group; and determine the production mode corresponding to each well group according to the modification difficulty of each well group.

[0099] As an example, when the insensitivity parameter is the mixed freezing point, for any well group in the plurality of well groups, the terminal can obtain the freezing point difference by subtracting the freezing point threshold from the mixed freezing point of the well group; when the freezing point difference is greater than the first sensitivity threshold, it is determined that the modification difficulty of the well group is at the third level; when the freezing point difference is between the first sensitivity threshold and the second sensitivity threshold, it is determined that the modification difficulty of the well group is at the second level; and when the freezing point difference is less than the second sensitivity threshold, it is determined that the modification difficulty of the well group is at the first level.

[0100] It should be noted that the freezing point threshold is a freezing point value that can reduce the cost of crude oil transportation, and the freezing point threshold can be set in advance according to the demand, such as 10 degrees Celsius, 8 degrees Celsius, 4 degrees Celsius, etc. The first sensitivity threshold and the second sensitivity threshold can also be set in advance, such as the first sensitivity threshold is 4 degrees Celsius, and the second sensitivity threshold is -4 degrees Celsius.

[0101] It should also be noted that when the insensitivity parameter is the mixed viscosity, the terminal can determine the modification difficulty of each well group according to the parameter values of the insensitivity parameters of each well group, which can refer to the operation when the insensitivity parameter is the mixed freezing point, and the embodiments of the present application will not be described one by one.

[0102] In some embodiments, the terminal can determine the production mode corresponding to each well group according to the modification difficulty of each well group, which can include: when the modification difficulty of each well group is at the first level or the second level, performing the operations of steps 202 and 203; when there is a well group with a modification difficulty of the third level in the plurality of well groups, producing the well group with a modification difficulty of the third level by the heat preservation heating transportation mode, the skin effect transportation mode and / or the additive modification transportation mode, and determining the modification production mode of the well group with a modification difficulty of the first level or the second level by the operations of steps 202 and 203.

[0103] Step 202: The terminal determines a target assignment number set corresponding to the plurality of well groups.

[0104] It should be noted that the target assignment number set is a set of assignment numbers that make the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield meet the target constraint condition, the multiple assignment numbers in the target assignment number set correspond to the multiple well groups one by one, and any assignment number in the multiple assignment numbers is used to indicate the production mode of the corresponding well group.

[0105] As an example, the target assignment number set can be a set of binary representations, for example, the assignment number can be 0 or 1, when the assignment number is 1, it indicates that the well group corresponding to the assignment number is put into production, and when the assignment number is 0, it indicates that the well group corresponding to the assignment number is not put into production.

[0106] In some embodiments, the operation of the terminal determining the target assignment number set corresponding to the multiple well groups at least includes the following operations: determining a plurality of assignment number sets corresponding to the multiple well groups, the multiple assignment numbers in each assignment number set in the multiple assignment number sets correspond to the multiple well groups one by one; selecting a reference assignment number set from the multiple assignment number sets, the reference assignment number set is any assignment number set in the multiple assignment number sets that is not selected; determining the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield according to the production mode described by the reference assignment number set and the insensitivity parameter corresponding to each well group; when the maximum parameter value of the insensitivity parameter of the multiple well groups does not meet the target constraint condition, or the annual production of the target oilfield does not meet the target constraint condition, returning to the operation of selecting the reference assignment number set from the multiple assignment number sets until the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield meet the target constraint condition; when the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield meet the target constraint condition, determining the reference assignment number set as the target assignment number set.

[0107] Because after the crude oil of different single wells is mixed, the annual production may meet the requirements of the development plan, or may not meet the requirements, and after the crude oil of different single wells is mixed, the mixture after mixing may also be more difficult to develop, therefore, after the terminal determines the multiple well groups, it needs to determine whether the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield meet the target constraint condition under different production modes. That is, the terminal can select a reference assignment number set from the multiple assignment number sets, and determine the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield according to the production mode described by the reference assignment number set and the insensitivity parameter corresponding to each well group, and determine whether the maximum parameter value of the insensitivity parameter of the multiple well groups and the annual production of the target oilfield meet the target constraint condition.

[0108] As an example, the terminal determines the maximum parameter value of the insensitive parameter of each well group and the annual production of the target oilfield according to the production mode described by the reference assignment number set and the corresponding insensitive parameter of each well group, and the operation includes at least the following operations: determining the annual production of each well group after production according to the production mode described by the reference assignment number set, obtaining a plurality of annual productions corresponding to the plurality of well groups; adding the plurality of annual productions to obtain the annual production of the target oilfield, which can be represented by the first formula: Comparing the parameter values of the insensitive parameters corresponding to each well group obtains the maximum parameter value of the insensitive parameters corresponding to the plurality of well groups.

[0109] It should be noted that in the above first formula (3), P i is the annual production of the i-th well group in the plurality of (n) well groups, and Q is the annual production of the target oilfield.

[0110] As an example, the terminal can determine the annual production of each well group by the following second formula (4).

[0111]

[0112] It should be noted that in the above second formula (4), q0 is the initial production of the single well starting to decrease, J is the oil production index, H is the effective thickness, m, Δp is the production pressure difference, MPa, q i is the production of the single well in the i-th year of decline, D is the decline rate, t is the production year, t r is the decline reference year, Q i is the annual production of the single well, n1 is the number of single wells in any well group, P i is the annual production of the i-th well group.

[0113] In some embodiments, the target constraint condition is a condition of increasing the annual production of the target oil well and reducing the production cost of the oil well, and the terminal can set the target constraint condition according to the demand in advance, for example, the target constraint condition includes that the similarity between the reference freezing point obtained by multiplying the maximum parameter value of the insensitive parameter of the plurality of well groups and the corresponding assignment number in the reference assignment number set and the corresponding annual production of each well group after production is greater than or equal to a similarity threshold, and the annual production of the target oilfield is greater than or equal to a first production threshold and less than a second production threshold.

[0114] As an example, the process of multiplying the maximum parameter value of the insensitive parameter of the plurality of well groups and the corresponding assignment number in the reference assignment number set and the corresponding annual production of each well group after production to obtain the reference freezing point can be represented by the following third formula.

[0115]

[0116] It should be noted that in the above third formula (5), when the insensitive parameter of the i th well group is the least sensitive parameter (the parameter value is the largest) among the insensitive parameters corresponding to the multiple well groups, F i is the parameter value of the insensitive parameter corresponding to the i th well group, B i is the assignment number indicating whether the i th well group is put into production, T gm is the reference freezing point.

[0117] It should be noted that the similarity threshold value can be set in advance according to requirements, for example, the similarity threshold value can be 95%, 98%, etc.

[0118] It should also be noted that the first yield threshold and the second yield threshold can also be set in advance, for example, the first yield threshold is 0.8 times the planned annual oil production (that is, 0.8*Q s ), and the second yield threshold can be 1.2 times the planned annual oil production (that is, 1.2*Q s ).

[0119] Step 203: The terminal determines the production mode of the well group indicated by the target assignment number set as the modified production mode of the target oilfield.

[0120] Since the well group production mode indicated by the target assignment number set can make the maximum parameter value of the insensitive parameter of the multiple well groups and the annual yield of the target oil well satisfy the target constraint condition, thereby ensuring the annual yield of the target oil well, and reducing the production cost, the terminal can determine the production mode of the well group indicated by the target assignment number set as the modified production mode of the target oilfield.

[0121] Step 204: The terminal prompts the production mode of the target oilfield through prompt information.

[0122] In order to enable the staff to understand the production mode of the target oilfield, the terminal can prompt the production mode of each well group in the multiple well groups in the target oilfield through prompt information.

[0123] As an example, the terminal can directly remind through prompt information in the form of text, voice, video, etc. The prompt information can also be sent to the handheld device of the staff to prompt the staff.

[0124] In this embodiment, the terminal can determine the modification and commissioning method of the target oilfield based on the parameter values ​​of insensitive parameters of multiple well groups and whether the annual production of the target oilfield meets the target constraints. This provides a standard for oilfield modification and achieves crude oil modification through the integration of existing well groups. While ensuring the oilfield's production capacity remains unchanged, it can maintain the relative stability of crude oil properties for a certain period without the need for additional modifiers, thereby reducing oilfield development costs and improving oilfield commissioning and crude oil transportation efficiency. Furthermore, since manual calculation and determination of the commissioning method are not required, the accuracy and efficiency of determining the oilfield commissioning method are improved.

[0125] Figure 3 This is a schematic diagram of a device for determining an oilfield modification and commissioning method according to an embodiment of this application. The device can be implemented using software, hardware, or a combination of both. The device may include: an acquisition module 301, a first determination module 302, and a second determination module 303.

[0126] The acquisition module 301 is used to acquire the insensitive parameters corresponding to each well group in multiple well groups in the target oilfield. The insensitive parameters corresponding to each well group are used to describe the modification difficulty of the corresponding well group, and each well group includes multiple single wells.

[0127] The first determining module 302 is used to determine the target assignment number set corresponding to the plurality of well groups. The target assignment number set is the assignment number set that makes the maximum parameter value of the insensitive parameter of the plurality of well groups and the annual production of the target oilfield meet the target constraint conditions. The plurality of assignment numbers in the target assignment number set correspond one-to-one with the plurality of well groups, and any assignment number in the plurality of assignment numbers is used to indicate the production mode of the corresponding well group.

[0128] The second determining module 303 is used to determine the production mode of the well group indicated by the target assigned number set as the modified production mode of the target oilfield.

[0129] In some embodiments, see Figure 4 The acquisition module 301 includes:

[0130] The submodule 3011 is used to divide the target oilfield according to the oil well division principle to obtain the multiple well groups;

[0131] The acquisition submodule 3012 is used to acquire the mixing pour point and mixing viscosity of crude oil in each of the multiple well groups after mixing.

[0132] The first determining submodule 3013 is used to determine the insensitive parameters of each well group based on the mixing solidification point and mixing viscosity of each well group.

[0133] In some embodiments, referring to Figure 5 , the first determining module 302 comprises:

[0134] a second determining sub-module 3021, configured to determine a plurality of assignment number sets corresponding to the plurality of well groups, wherein a plurality of assignment numbers in each assignment number set of the plurality of assignment number sets correspond to the plurality of well groups one by one;

[0135] a selecting sub-module 3022, configured to select a reference assignment number set from the plurality of assignment number sets, wherein the reference assignment number set is any assignment number set that is not selected from the plurality of assignment number sets;

[0136] a third determining sub-module 3023, configured to determine a maximum parameter value of the insensitive parameter corresponding to the plurality of well groups and an annual production of the target oilfield according to a production mode described by the reference assignment number set and the insensitive parameter corresponding to each well group;

[0137] a triggering sub-module 3024, configured to trigger the selecting sub-module 3022 to select a reference assignment number set from the plurality of assignment number sets when the maximum parameter value of the insensitive parameter of the plurality of well groups does not satisfy the target constraint condition or the annual production of the target oilfield does not satisfy the target constraint condition, until the maximum parameter value of the insensitive parameter of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition;

[0138] a fourth determining sub-module 3025, configured to determine the reference assignment number set as the target assignment number set when the maximum parameter value of the insensitive parameter of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition.

[0139] In some embodiments, referring to Figure 6 , the apparatus further comprises:

[0140] a third determining module 304, configured to determine a modified difficulty of each well group according to a parameter value of the insensitive parameter of the each well group;

[0141] a fourth determining module 305, configured to determine a production mode corresponding to the each well group according to the modified difficulty of the each well group.

[0142] In some embodiments, the fourth determining module 305 is configured to:

[0143] when the modified difficulty of the each well group is a first degree or a second degree, perform an operation of determining a target assignment number set corresponding to the plurality of well groups;

[0144] When the well group with the third degree of modification difficulty exists in the plurality of well groups, the well group with the third degree of modification difficulty is put into production by the heat preservation heating delivery mode, the skin effect delivery mode and / or the additive modification delivery mode.

[0145] In the embodiment of the present application, the terminal can determine the modification production mode of the target oil field according to the parameter values of the insensitive parameters of the plurality of well groups and whether the annual production of the target oil field meets the target constraint condition, provide a standard for oil field modification, and realize crude oil modification by fusing the existing well groups together. In the case of ensuring the oil field production capacity unchanged, the properties of the crude oil can be kept relatively stable within a certain period of time without the need of adding additional modifiers, thereby reducing the development cost of the oil field and improving the oil field production and crude oil delivery efficiency. At the same time, since the staff does not need to manually calculate and determine the production mode, the accuracy and efficiency of determining the oil field production mode are improved.

[0146] It should be noted that the determination device of the oil field modification production mode provided in the above embodiments only divides the above functional modules for example when determining the oil field modification production mode. In actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the determination device of the oil field modification production mode and the determination method of the oil field modification production mode provided in the above embodiments belong to the same concept, and the specific implementation process is described in detail in the method embodiments, which will not be repeated here.

[0147] Figure 7 The structure block diagram of the terminal 700 provided in an example embodiment of the present application is shown. The terminal 700 can be a smart phone, a tablet computer, a notebook computer or a desktop computer. The terminal 700 can also be referred to as a user equipment, a portable terminal, a laptop terminal, a desktop terminal, and other names.

[0148] Generally, the terminal 700 includes a processor 701 and a memory 702.

[0149] The processor 701 can include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 701 can be implemented in at least one of a hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), a PLA (Programmable Logic Array). The processor 701 can also include a main processor and a coprocessor, the main processor being a processor for processing data in an awake state, also referred to as a CPU (Central Processing Unit), and the coprocessor being a low-power processor for processing data in a standby state. In some embodiments, the processor 701 can be integrated with a GPU (Graphics Processing Unit) for rendering and drawing content required to be displayed by the display screen. In some embodiments, the processor 701 can further include an AI (Artificial Intelligence) processor for processing computing operations related to machine learning.

[0150] The memory 702 can include one or more computer-readable storage media that can be non-transitory. The memory 702 can also include high-speed random access memory and nonvolatile, computer-readable storage media such as one or more magnetic disk storage devices, flash memory devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 702 is used to store at least one instruction for being executed by the processor 701 to implement the determination method of the oilfield modified production mode provided by the method embodiments in the present application.

[0151] In some embodiments, the terminal 700 can also optionally include a peripheral device interface 703 and at least one peripheral device. The processor 701, the memory 702, and the peripheral device interface 703 can be connected through a bus or a signal line. Each peripheral device can be connected to the peripheral device interface 703 through a bus, a signal line, or a circuit board. Specifically, the peripheral device includes at least one of a radio frequency circuit 704, a display screen 705, a camera component 706, an audio circuit 707, a positioning component 708, and a power supply 709.

[0152] The peripheral interface 703 can be used to connect at least one I / O (Input / Output) related peripheral device to the processor 701 and the memory 702. In some embodiments, the processor 701, the memory 702 and the peripheral interface 703 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 701, the memory 702 and the peripheral interface 703 can be implemented on a separate chip or circuit board, and the present embodiments are not limited in this regard.

[0153] The radio frequency circuit 704 is configured to receive and send RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit 704 communicates with communication networks and other communication devices through electromagnetic signals. The radio frequency circuit 704 converts electric signals into electromagnetic signals for transmission, or converts electromagnetic signals received into electric signals. Optionally, the radio frequency circuit 704 includes an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and the like. The radio frequency circuit 704 can communicate with other terminals through at least one wireless communication protocol. The wireless communication protocol includes but is not limited to: a metropolitan area network, various generations of mobile communication networks (2G, 3G, 4G and 5G), a wireless local area network and / or a WiFi (Wireless Fidelity) network. In some embodiments, the radio frequency circuit 704 can also include NFC (Near Field Communication) related circuitry, and the present application is not limited in this regard.

[0154] The display screen 705 is configured to display a UI (User Interface). The UI can include graphics, text, icons, video, and any combination thereof. When the display screen 705 is a touch display screen, the display screen 705 is also capable of capturing touch signals on or above the surface of the display screen 705. The touch signals can be input to the processor 701 as control signals for processing. At this time, the display screen 705 can also be configured to provide virtual buttons and / or virtual keyboard, also known as soft buttons and / or soft keyboard. In some embodiments, the display screen 705 can be one, arranged on the front panel of the terminal 700; in other embodiments, the display screen 705 can be at least two, arranged on different surfaces of the terminal 700 or in a folding design; in other embodiments, the display screen 705 can be a flexible display screen, arranged on a curved surface or a folding surface of the terminal 700. Even, the display screen 705 can also be arranged in an irregular shape other than a rectangle, i.e., a special-shaped screen. The display screen 705 can be made of materials such as LCD (Liquid Crystal Display) or OLED (Organic Light-Emitting Diode).

[0155] The camera assembly 706 is configured to capture images or videos. Optionally, the camera assembly 706 includes a front-facing camera and a rear-facing camera. Typically, the front-facing camera is arranged on the front panel of the terminal, and the rear-facing camera is arranged on the back of the terminal. In some embodiments, the rear-facing camera is at least two, which are any one of a main camera, a depth-of-field camera, a wide-angle camera, and a telephoto camera, to realize the background blur function by fusing the main camera and the depth-of-field camera, the panoramic shooting and VR (Virtual Reality) shooting function by fusing the main camera and the wide-angle camera, or other fusion shooting functions. In some embodiments, the camera assembly 706 can also include a flash. The flash can be a single-color temperature flash or a dual-color temperature flash. The dual-color temperature flash refers to the combination of a warm light flash and a cold light flash, which can be used for light compensation under different color temperatures.

[0156] The audio circuit 707 can include a microphone and a speaker. The microphone is used to collect sound waves of a user and an environment, and convert the sound waves into an electrical signal input to the processor 701 for processing, or input to the radio frequency circuit 704 to realize voice communication. For the purpose of stereo sound collection or noise reduction, the microphone can be multiple, which are respectively arranged at different parts of the terminal 700. The microphone can also be an array microphone or an omnidirectional collection type microphone. The speaker is used to convert an electrical signal from the processor 701 or the radio frequency circuit 704 into sound waves. The speaker can be a conventional diaphragm speaker, or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, not only can it convert an electrical signal into a sound wave audible to humans, but also can convert an electrical signal into an inaudible sound wave to humans for ranging purposes, etc. In some embodiments, the audio circuit 707 can also include a headphone jack.

[0157] The positioning component 708 is used to position the current geographic location of the terminal 700 to realize navigation or LBS (Location Based Service). The positioning component 708 can be a positioning component based on the GPS (Global Positioning System) of the United States, the Beidou system of China, the GLONASS system of Russia or the Galileo system of the European Union.

[0158] The power supply 709 is used to supply power to each component in the terminal 700. The power supply 709 can be alternating current, direct current, disposable battery or rechargeable battery. When the power supply 709 includes a rechargeable battery, the rechargeable battery can support wired charging or wireless charging. The rechargeable battery can also be used to support fast charging technology.

[0159] In some embodiments, the terminal 700 further includes one or more sensors 710. The one or more sensors 710 include but are not limited to: an acceleration sensor 711, a gyroscope sensor 712, a pressure sensor 713, a fingerprint sensor 714, an optical sensor 715 and a proximity sensor 716.

[0160] The acceleration sensor 711 can detect the acceleration magnitude in three coordinate axes of the coordinate system established by the terminal 700. For example, the acceleration sensor 711 can be used to detect the components of the gravitational acceleration in three coordinate axes. The processor 701 can control the display screen 705 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 711. The acceleration sensor 711 can also be used for game or user motion data collection.

[0161] The gyroscope sensor 712 can detect the body direction and rotation angle of the terminal 700, and can collect 3D motions of the user on the terminal 700 in cooperation with the acceleration sensor 711. The processor 701 can implement the following functions according to the data collected by the gyroscope sensor 712: motion sensing (e.g., changing a UI according to a tilt operation of the user), image stabilization during shooting, game control, and inertial navigation.

[0162] The pressure sensor 713 can be disposed on the side frame of the terminal 700 and / or the lower layer of the display screen 705. When the pressure sensor 713 is disposed on the side frame of the terminal 700, the grip signal of the user on the terminal 700 can be detected, and the left-hand / right-hand recognition or shortcut operation can be performed by the processor 701 according to the grip signal collected by the pressure sensor 713. When the pressure sensor 713 is disposed on the lower layer of the display screen 705, the operable control on the UI interface can be controlled by the processor 701 according to the pressure operation of the user on the display screen 705. The operable control includes at least one of a button control, a scroll bar control, an icon control, and a menu control.

[0163] The fingerprint sensor 714 is used to collect the fingerprint of the user, and the identity of the user can be recognized by the processor 701 according to the fingerprint collected by the fingerprint sensor 714, or by the fingerprint sensor 714 according to the collected fingerprint. When the identity of the user is recognized as a trusted identity, the processor 701 authorizes the user to perform a related sensitive operation, which includes unlocking the screen, viewing encrypted information, downloading software, payment, and changing settings, etc. The fingerprint sensor 714 can be disposed on the front, back, or side of the terminal 700. When the terminal 700 is provided with a physical button or a manufacturer's logo, the fingerprint sensor 714 can be integrated with the physical button or the manufacturer's logo.

[0164] The optical sensor 715 is used to collect the ambient light intensity. In one embodiment, the processor 701 can control the display brightness of the display screen 705 according to the ambient light intensity collected by the optical sensor 715. Specifically, when the ambient light intensity is high, the display brightness of the display screen 705 is increased; when the ambient light intensity is low, the display brightness of the display screen 705 is decreased. In another embodiment, the processor 701 can also dynamically adjust the shooting parameters of the camera assembly 706 according to the ambient light intensity collected by the optical sensor 715.

[0165] The proximity sensor 716, also called a distance sensor, is usually arranged on the front panel of the terminal 700. The proximity sensor 716 is used to collect the distance between the user and the front of the terminal 700. In one embodiment, when the proximity sensor 716 detects that the distance between the user and the front of the terminal 700 gradually decreases, the display screen 705 is switched from the bright screen state to the screen-off state under the control of the processor 701; when the proximity sensor 716 detects that the distance between the user and the front of the terminal 700 gradually increases, the display screen 705 is switched from the screen-off state to the bright screen state under the control of the processor 701.

[0166] Those skilled in the art can understand that the structure shown in the foregoing embodiments is not a limitation on the terminal 700, and the terminal 700 can include more or fewer components than those shown in the drawings, or combine certain components, or adopt a different component arrangement. Figure 7

[0167] The embodiment of the present application further provides a non-transitory computer readable storage medium, when instructions in the storage medium are executed by a processor of a terminal, the terminal can execute the oilfield modified production mode determination method provided in the foregoing embodiment.

[0168] The embodiment of the present application further provides a computer program product containing instructions, when the computer program product is executed on a terminal, the terminal executes the oilfield modified production mode determination method provided in the foregoing embodiment.

[0169] Those skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by hardware, or by a program instructing relevant hardware to complete, and the program can be stored in a computer readable storage medium, and the storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk.

[0170] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.​

Claims

1. A method for determining a modified production mode of an oil field, characterized in that, The method comprises: obtaining a corresponding insensitive parameter of each well group in a plurality of well groups in a target oilfield, the corresponding insensitive parameter of each well group being used to describe the modification difficulty of the corresponding well group, and each well group comprising a single well of a plurality of oilfields; determining a target assignment number set corresponding to the plurality of well groups, the target assignment number set being an assignment number set that makes the maximum parameter value of the insensitive parameters of the plurality of well groups and the annual production of the target oilfield satisfy a target constraint condition, a plurality of assignment numbers in the target assignment number set corresponding to the plurality of well groups one by one, and any assignment number in the plurality of assignment numbers being used to indicate the production mode of the corresponding well group; determining the production mode of the well group indicated by the target assignment number set as the modified production mode of the target oilfield; The method comprises: dividing the target oilfield according to a well division principle to obtain the plurality of well groups; for any well group in the plurality of well groups, obtaining the freezing point and viscosity of each single well in the well group, and determining the mixed freezing point of the well group according to crude oil freezing point modification law formula (1), and determining the mixed viscosity of the well group according to crude oil viscosity modification law formula (2); （1） （2） wherein, is the ratio of the n th single well crude oil participation amount to the total amount, is the freezing point of the n th single well crude oil, is the mixed freezing point; is the mixed viscosity, is the viscosity of the n th single well crude oil, is the viscosity after mixing the n single well crude oils in equal mass or equal volume; for any well group, comparing the mixed freezing point of the well group with the freezing point of the crude oil of each single well in the well group, and comparing the mixed viscosity of the well group with the viscosity of the crude oil of each single well in the well group; when the freezing point change value between the mixed freezing point and the freezing point of the crude oil of each single well is less than a first change threshold, determining that the mixed freezing point is an insensitive parameter; when the viscosity change value between the mixed viscosity and the viscosity of the crude oil of each single well is less than a second change threshold, determining that the mixed viscosity is an insensitive parameter; The target constraint condition comprises that the similarity between the reference freezing point obtained by multiplying the maximum parameter value of the insensitive parameters of the plurality of well groups and the corresponding assignment number in the reference assignment number set and the annual production of the corresponding well group, and a reference threshold value is greater than or equal to a similarity threshold value, and the annual production of the target oilfield is greater than or equal to a first production threshold value and less than a second production threshold value; The process of the reference freezing point obtained by multiplying the maximum parameter value of the insensitive parameters of the plurality of well groups and the corresponding assignment number in the reference assignment number set and the annual production of the corresponding well group can be represented by the following third formula; （5）； when the insensitivity parameter of the i-th well group is the least sensitive parameter among the insensitivity parameters corresponding to the multiple well groups, a parameter value of the insensitivity parameter corresponding to the i-th well group, an assignment number indicating whether the i-th well group is put into production, is a reference freezing point.

2. The method of claim 1, wherein, The method comprises: determining a plurality of assignment number sets corresponding to the plurality of well groups, a plurality of assignment numbers in each assignment number set in the plurality of assignment number sets corresponding to the plurality of well groups one by one; selecting a reference assignment number set from the plurality of assignment number sets, the reference assignment number set being any assignment number set that is not selected from the plurality of assignment number sets; determining the maximum parameter value of the insensitive parameters of the plurality of well groups and the annual production of the target oilfield according to the production mode described by the reference assignment number set and the corresponding insensitive parameter of each well group; When the maximum parameter value of the insensitive parameters of the plurality of well groups does not satisfy the target constraint condition, or the annual production of the target oilfield does not satisfy the target constraint condition, returning to the operation of selecting a reference assignment number set from the plurality of assignment number sets until the maximum parameter value of the insensitive parameters of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition; When the maximum parameter value of the insensitive parameters of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition, determining the reference assignment number set as the target assignment number set.

3. The method of claim 1, wherein, The obtaining the insensitive parameter corresponding to each well group in the multiple well groups in the target oil field further comprises: determining the modification difficulty of each well group according to the parameter value of the insensitive parameter of each well group; determining the production mode corresponding to each well group according to the modification difficulty of each well group.

4. The method of claim 3, wherein, The determining the production mode corresponding to each well group according to the modification difficulty of each well group comprises: when the modification difficulty of each well group is the first level or the second level, performing the operation of determining the target assignment number set corresponding to the multiple well groups; when there is a well group with the third level modification difficulty in the multiple well groups, producing the well group with the third level modification difficulty by the heat preservation heating delivery mode, the skin effect delivery mode and / or the additive modification delivery mode.

5. An apparatus for determining a modified production mode of an oil field, characterized by The device comprises: an obtaining module, configured to obtain an insensitive parameter corresponding to each well group in a plurality of well groups in a target oil field, the insensitive parameter corresponding to each well group being used to describe the modification difficulty of the corresponding well group, and each well group comprising a single well of a plurality of oil fields; a first determining module, configured to determine a target assignment number set corresponding to the multiple well groups, the target assignment number set being an assignment number set that satisfies a target constraint condition for the maximum parameter value of the insensitive parameter of the multiple well groups and the annual output of the target oil field, a plurality of assignment numbers in the target assignment number set corresponding to the multiple well groups one by one, and any assignment number in the plurality of assignment numbers being used to indicate the production mode of the corresponding well group; a second determining module, configured to determine the production mode of the well group indicated by the target assignment number set as the modified production mode of the target oil field; The obtaining module comprises: a dividing sub-module, configured to divide the target oil field according to a well division principle to obtain the multiple well groups; an obtaining sub-module, configured to obtain the freezing point and the viscosity of each single well in a well group for any well group in the multiple well groups, and determine the mixed freezing point of the well group according to crude oil freezing point modification law formula (1) and determine the mixed viscosity of the well group according to crude oil viscosity modification law formula (2); （1） （2） wherein, is the ratio of the n th single well crude oil participation amount to the total amount, is the solidification point of the n th single well crude oil, is the mixed solidification point; is the mixed viscosity, is the viscosity of the n th single well crude oil, is the viscosity after mixing the n single well crude oils in equal mass or equal volume; the first determining sub-module is configured to, for any well group, compare the mixed solidification point of the well group with the solidification point of the crude oil of each single well in the well group, and compare the mixed viscosity of the well group with the viscosity of the crude oil of each single well in the well group; when the solidification point change value between the mixed solidification point and the solidification point of the crude oil of each single well is less than a first change threshold, the mixed solidification point is determined as an insensitive parameter; when the viscosity change value between the mixed viscosity and the viscosity of the crude oil of each single well is less than a second change threshold, the mixed viscosity is determined as an insensitive parameter; The target constraint condition comprises that the similarity between the reference freezing point obtained by multiplying the maximum parameter value of the insensitive parameter of the multiple well groups and the corresponding assignment number in the reference assignment number set and the annual output of the corresponding well group after production, and the reference threshold value is greater than or equal to a similarity threshold value, and the annual output of the target oil field is greater than or equal to a first output threshold value and less than a second output threshold value; and the process of obtaining the reference freezing point by multiplying the maximum parameter value of the insensitive parameter of the multiple well groups and the corresponding assignment number in the reference assignment number set and the annual output of the corresponding well group after production can be represented by the following third formula; （5）； when the insensitivity parameter of the i-th well group is the least sensitive parameter among the insensitivity parameters corresponding to the plurality of well groups, a parameter value for the insensitivity parameter corresponding to the i-th well group, an assignment number indicating whether the i-th well group is put into production, is a reference freezing point.

6. The apparatus of claim 5, wherein, The first determining module comprises: a second determining sub-module, configured to determine a plurality of assignment number sets corresponding to the multiple well groups, a plurality of assignment numbers in each assignment number set in the plurality of assignment number sets corresponding to the multiple well groups one by one. The selecting sub-module is configured to select a reference assignment number set from the plurality of assignment number sets, the reference assignment number set being any assignment number set that is not selected from the plurality of assignment number sets; The third determining sub-module is configured to determine a maximum parameter value of the insensitive parameter of each well group and an annual production of the target oilfield according to the production mode described by the reference assignment number set and the insensitive parameter corresponding to each well group; The triggering sub-module is configured to trigger the selecting sub-module to select a reference assignment number set from the plurality of assignment number sets when the maximum parameter value of the insensitive parameter of the plurality of well groups or the annual production of the target oilfield does not satisfy the target constraint condition, until the maximum parameter value of the insensitive parameter of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition; The fourth determining sub-module is configured to determine the reference assignment number set as the target assignment number set when the maximum parameter value of the insensitive parameter of the plurality of well groups and the annual production of the target oilfield satisfy the target constraint condition.

7. The apparatus of claim 5, wherein, The apparatus further includes: The third determining module is configured to determine a modified difficulty of each well group according to the parameter value of the insensitive parameter of each well group; The fourth determining module is configured to determine a production mode corresponding to each well group according to the modified difficulty of each well group.

8. The apparatus of claim 7, wherein, The fourth determining module is configured to: When the modified difficulty of each well group is a first level or a second level, perform an operation of determining a target assignment number set corresponding to the plurality of well groups; When there is a well group with a third level of modified difficulty in the plurality of well groups, produce the well group with the third level of modified difficulty by a heat preservation and heating delivery mode, a skin effect delivery mode and / or an additive modification delivery mode.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores instructions, and the instructions are executed by the processor to implement the steps of the method in any one of claims 1 to 4.

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