Oil reservoir reserve utilization potential evaluation method and device, electronic equipment and medium

Abstract

The invention discloses an oil reservoir reserve utilization potential evaluation method and device, electronic equipment and a medium. The method comprises the steps that an original static temperature curve and flow temperature curves at different moments are drawn according to actual oil reservoir exploitation data, and the oil reservoir utilization depth is determined according to the intersection point between the original static temperature curve and the flow temperature curves; determining an oil reservoir unit in a development state according to the oil reservoir production depth, and determining a production indication curve of the oil reservoir unit; obtaining the geological reserves of the oil reservoir units from the production indication curve; and determining a curve of single well oil pressure and cumulative liquid production according to the actual oil reservoir exploitation data, and quantifying the oil reservoir reserve utilization potential in combination with the geological reserves. According to the method, the reservoir reserve utilization potential is quantified by judging the reservoir units in the development state, the reserve utilization potential of the fault control type carbonate reservoir can be finely and accurately evaluated, and data support is provided for further improving the reserve utilization degree.

Description

Technical Field

[0001] The present invention relates to the technical field of oil reservoir development, and in particular to a method, device, electronic equipment and medium for evaluating the potential of oil reservoir reserves. Background Art

[0002] At present, the western basins of China are the main areas of proven oil reserves. Fault-controlled carbonate reservoirs are in the upper production period. The internal storage space and oil and gas enrichment of the reservoirs are mainly controlled by large strike-slip faults. The vertical oil column is high and the reservoir is generally "plate-shaped". With the acceleration of the exploration and development of oil reservoirs, it is very necessary to evaluate and quantify the reserve potential of fault-controlled carbonate reservoirs for the screening of potential areas in the later stage, the formulation of development plans for the area and the evaluation of development benefits.

[0003] The method used to evaluate the reserve development potential of fault-controlled carbonate reservoirs is to refer to the overall evaluation method of massive reservoirs and make a general evaluation based on the overall reserve development degree of the reservoir. This is because the reservoir heterogeneity of fault-controlled carbonate reservoirs is extremely strong and the vertical and horizontal distribution characteristics are extremely complex, which makes it difficult to evaluate the reserve development potential of this type of reservoir using existing methods. In other words, existing methods cannot accurately and precisely evaluate the reserve development potential of fault-controlled carbonate reservoirs. Summary of the invention

[0004] The present invention provides a method, device, electronic equipment and medium for evaluating the potential of oil reservoir reserves, so as to solve the problem that the potential of reserves of fault-controlled carbonate oil reservoirs cannot be evaluated precisely and accurately.

[0005] According to one aspect of the present invention, a method for evaluating the potential of oil reservoir reserves is provided, the method comprising:

[0006] Draw an original static temperature curve and flow temperature curves at different times according to actual oil reservoir exploitation data, and determine the oil reservoir production depth according to the intersection between the original static temperature curve and the flow temperature curve, wherein the flow temperature curve is a curve drawn according to the temperature values ​​at different times of oil reservoir development when developing an oil reservoir of a preset depth, and the oil reservoir production depth is the distance between the oil reservoir development position and the oil reservoir starting development point when the oil reservoir is in the development state;

[0007] Determining the oil reservoir storage unit in the development state according to the oil reservoir producing depth, and determining the production indicator curve of the oil reservoir storage unit;

[0008] Obtaining the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculating the production degree value of the oil reservoir storage unit according to the oil reservoir reserve production formula, wherein the geological reserves include dynamic geological reserves and static geological reserves, and the oil reservoir reserve production formula is a percentage formula of the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit;

[0009] The single well oil pressure and cumulative liquid production curve is determined based on the actual oil reservoir production data, and the oil reservoir reserve production potential is quantified in combination with the geological reserves.

[0010] According to another aspect of the present invention, there is provided a device for evaluating the potential of oil reservoir reserves, the device comprising:

[0011] The oil reservoir producing depth determination module is used to draw the original static temperature curve and the flow temperature curve at different times according to the actual oil reservoir exploitation data, and determine the oil reservoir producing depth according to the intersection between the original static temperature curve and the flow temperature curve, wherein the flow temperature curve is a curve drawn according to the temperature values ​​at different times of oil reservoir development when developing an oil reservoir of a preset depth, and the oil reservoir producing depth is the distance between the oil reservoir development position and the oil reservoir starting development point when the oil reservoir is in the development state;

[0012] A production indicator curve determination module is used to determine the oil reservoir storage unit in the development state according to the oil reservoir producing depth, and determine the production indicator curve of the oil reservoir storage unit;

[0013] A producing degree evaluation module is used to obtain the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculate the producing degree value of the oil reservoir storage unit according to the oil reservoir reserve producing formula, wherein the geological reserves include dynamic geological reserves and static geological reserves, and the oil reservoir reserve producing formula is a percentage formula of the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit;

[0014] The production potential quantification module is used to determine the single well oil pressure and cumulative liquid production curve based on the actual oil reservoir production data, and quantify the oil reservoir reserve production potential in combination with the geological reserves.

[0015] According to another aspect of the present invention, there is provided an electronic device, the electronic device comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for evaluating the potential for production of oil reservoir reserves described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to implement the method for evaluating the potential for production of oil reservoir reserves described in any embodiment of the present invention when executed by a processor.

[0020] The technical solution of the embodiment of the present invention is to draw the original static temperature curve and the flow temperature curve at different times according to the actual oil reservoir production data, determine the oil reservoir production depth according to the intersection between the original static temperature curve and the flow temperature curve; determine the oil reservoir storage unit in the development state according to the oil reservoir production depth, and determine the production indicator curve of the oil reservoir storage unit; obtain the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculate the production degree of the oil reservoir storage unit according to the oil reservoir reserve production formula; determine the single well oil pressure and cumulative liquid production curve according to the actual oil reservoir production data, and quantify the oil reservoir reserve production potential in combination with the geological reserves. This method determines the oil reservoir production depth, judges the oil reservoir storage unit in the development state, and then quantifies the oil reservoir reserve production potential through the production indicator curve and the single well oil pressure and cumulative liquid production curve. This method can accurately and accurately evaluate the reserve production potential of fault-controlled carbonate oil reservoirs, and provide data support for further improving the reserve production degree.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a flow chart of a method for evaluating the potential of oil reservoir reserves provided in an embodiment of the present invention;

[0024] Figure 2 is a coordinate diagram of an original static temperature curve and flow temperature curves at different times provided according to an embodiment of the present invention;

[0025] Figure 3is a schematic diagram of a production indication curve provided according to an embodiment of the present invention;

[0026] Figure 4 is a flow chart of a method for evaluating oil reservoir reserve production potential provided in an embodiment of the present invention;

[0027] Figure 5 is a relationship diagram between the oil pressure and the accumulated liquid production of a single well provided according to an embodiment of the present invention;

[0028] Figure 6 is a flow chart of a method for evaluating oil reservoir reserve production potential provided in an embodiment of the present invention;

[0029] Figure 7 is a three-dimensional stereogram of an oil reservoir provided according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of a device for evaluating the potential of oil reservoir reserves provided in accordance with the second embodiment of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of an electronic device for implementing the method for evaluating the potential of oil reservoir reserves production according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] Embodiment 1

[0035] Figure 1A flowchart of a method for evaluating the potential of oil reservoir reserves is provided for the first embodiment of the present invention. This embodiment is applicable to the case of evaluating the potential of oil reservoir reserves. The method can be executed by an evaluation device for evaluating the potential of oil reservoir reserves. The evaluation device for evaluating the potential of oil reservoir reserves can be implemented in the form of hardware and / or software. The evaluation device for evaluating the potential of oil reservoir reserves can be configured in any electronic device with network communication function. Figure 1 As shown, the method may include:

[0036] S110. Draw the original static temperature curve and the flow temperature curves at different times according to the actual oil reservoir exploitation data, and determine the reservoir production depth according to the intersection between the original static temperature curve and the flow temperature curve, wherein the flow temperature curve is a curve drawn according to the temperature values ​​at different times of the oil reservoir development when developing an oil reservoir of a preset depth, and the oil reservoir production depth is the distance between the oil reservoir development position and the oil reservoir starting development point when the oil reservoir is in the development state.

[0037] As an optional but not limiting implementation, determining the reservoir producing depth according to the intersection between the original static temperature curve and the flow temperature curve includes steps A1-A2:

[0038] Step A1, determining an original static temperature relationship according to the original static temperature curve, and determining a flow-temperature relationship according to the flow-temperature curve.

[0039] Specifically, the original static temperature relationship is determined according to the original static temperature curve. Since the original static temperature curve is a straight line showing a linear relationship, the two points on the original static temperature curve can be determined by referring to the actual reservoir production data. The slope of the original static temperature curve is determined according to these two points, and then the original static temperature relationship is determined, which is expressed as follows:

[0040] T i =T oi +G Ti D

[0041] Among them, T represents temperature, G represents slope, and D represents reservoir development or production depth.

[0042] Specifically, the flow-temperature relationship is determined according to the flow-temperature curve. Since the flow-temperature curve is a straight line showing a linear relationship, two points on the flow-temperature curve are determined by querying the actual reservoir production data. The slope of the flow-temperature curve is determined according to the two points, and then the flow-temperature relationship is determined, which is expressed as follows:

[0043] T f1 =T of1 +G Tf1 D

[0044] Among them, T represents temperature, G represents slope, and D represents reservoir development or production depth.

[0045] For example, the original static temperature curve and the flow temperature curve at different times are as follows: Figure 2 As shown, the actual oil reservoir production data records the data relationship between the oil reservoir production depth or the oil reservoir utilization depth and different times. The original static temperature curve and the flow temperature curve at different times are drawn according to the data relationship. The original static temperature relationship is determined according to the original static temperature curve, and the flow temperature relationship is determined according to the flow temperature curve at different times.

[0046] Step A2: when there is an intersection between the original static temperature curve and the flow temperature curve, determine the value of the ordinate of the intersection on the original static temperature curve and the flow temperature curve as the reservoir producing depth.

[0047] Specifically, Figure 2 As shown, when there is an intersection between the original static temperature curve and the flow temperature curve at different times, it means that the reservoir has been developed at that time, and the production depth of the reservoir can be obtained based on the data of this intersection.

[0048] Optionally, according to the rule that the horizontal coordinates of the intersection points on the original static temperature curve and the flow temperature curve have equal values, an equivalence relationship of the reservoir production depth on the horizontal coordinate is established, and the reservoir production depth is determined according to the equivalence relationship of the reservoir production depth.

[0049] Specifically, since there is an intersection between the original static temperature curve and the flow temperature curve at different times, the equivalence relationship of the reservoir production depth on the horizontal axis can be established through the intersection. By converting the equivalence relationship, the reservoir production depth can be extracted to determine the reservoir production depth.

[0050] For example, when there is an intersection between the original static temperature curve and the flow temperature curve at different times, the equivalent relationship of the reservoir production depth is established through the abscissa of the intersection, which is expressed as follows:

[0051] T oi +G Ti D p1 =T of1 +G Tf1 D p1

[0052]

[0053] S120: Determine an oil reservoir storage unit in a development state according to the oil reservoir producing depth, and determine a production indicator curve of the oil reservoir storage unit.

[0054] Specifically, since each oil reservoir is distributed with multiple oil reservoir storage units, each oil reservoir storage unit is located at a different location, and each oil reservoir storage unit has a different production indicator curve, the oil reservoir production position can be determined according to the oil reservoir production depth, so as to determine which oil reservoir storage unit or units are to be developed, and then determine the production indicator curve of the oil reservoir storage unit.

[0055] For example, Figure 3 is a schematic diagram of the production indicator curve, N a12 represents the first reservoir unit and the second reservoir unit of the reservoir, N a13 Represents the third reservoir unit of the reservoir, N a14 Indicates the fourth oil reservoir unit of the oil reservoir. When the oil reservoir producing depth is determined, the depth range value of each oil reservoir unit can be queried to determine which oil reservoir unit is produced, and the production indicator curve of the oil reservoir unit can be determined based on the produced oil reservoir unit information.

[0056] S130, obtaining the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculating the production degree value of the oil reservoir storage unit according to the oil reservoir reserve production formula, wherein the geological reserves include dynamic geological reserves and static geological reserves, and the oil reservoir reserve production formula is a percentage formula of the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit.

[0057] Specifically, the dynamic geological reserves of the reservoir unit are predicted according to the production indicator curve, and the static geological reserves of different reservoir units are predicted by the fracture-cavity carving method. The production degree of the reservoir unit can be determined according to the reservoir reserve production formula, that is, the percentage of the ratio of dynamic geological reserves to static geological reserves is the production degree of the reservoir unit. The reservoir reserve production formula is as follows:

[0058]

[0059] S140, determining a single well oil pressure and cumulative liquid production curve based on the actual oil reservoir production data, and quantifying the oil reservoir reserve production potential in combination with the geological reserves.

[0060] Specifically, a linear relationship curve between the oil pressure and the cumulative liquid production of a single well is drawn according to the actual oil reservoir production data, with the horizontal axis being the oil pressure drop and the vertical axis being the cumulative liquid production. The linear relationship curve is divided into two stages. When the oil reservoir production depth is in the first oil reservoir storage unit and the second oil reservoir storage unit, the linear relationship curve is in the first stage, and the relationship formula of the linear relationship curve between the oil pressure and the cumulative liquid production of the single well in the first stage is determined by the linear relationship curve; when a new reservoir body supplies liquid to the oil reservoir in the development state, the relationship formula of the linear relationship curve between the oil pressure and the cumulative liquid production of the single well in the second stage is determined by the linear relationship curve, and the geological reserves are substituted into the relationship formula of the linear relationship curve between the oil pressure and the cumulative liquid production of the single well to quantify the production potential of the oil reservoir reserves.

[0061] The embodiment of the present application proposes a method for evaluating the potential for producing oil reservoir reserves. The method comprises drawing an original static temperature curve and a flow temperature curve at different times according to actual oil reservoir production data, and determining the oil reservoir producing depth according to the intersection between the original static temperature curve and the flow temperature curve; determining the oil reservoir storage unit in the development state according to the oil reservoir producing depth, and determining the production indicator curve of the oil reservoir storage unit; obtaining the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculating the producing degree of the oil reservoir storage unit according to the oil reservoir reserve producing formula; determining a single well oil pressure and cumulative liquid production curve according to the actual oil reservoir production data, and quantifying the oil reservoir reserve producing potential in combination with the geological reserves. The method determines the oil reservoir producing depth, judges the oil reservoir storage unit in the development state, and further quantifies the oil reservoir reserve producing potential through the production indicator curve and the single well oil pressure and cumulative liquid production curve. The method can accurately and precisely evaluate the reserve producing potential of fault-controlled carbonate oil reservoirs, and provide data support for further improving the reserve producing degree.

[0062] Figure 4 A flowchart of a method for evaluating the potential of oil reservoir reserves provided in an embodiment of the present invention is provided. This embodiment is based on the above embodiment and explains in detail how to determine the single well oil pressure and cumulative liquid production curve according to the mining data, and quantify the potential of oil reservoir reserves in combination with the geological reserves. Figure 4 As shown, the method may include:

[0063] S210. Draw the original static temperature curve and the flow temperature curves at different times according to the actual oil reservoir exploitation data, and determine the reservoir production depth according to the intersection between the original static temperature curve and the flow temperature curve, wherein the flow temperature curve is a curve drawn according to the temperature values ​​at different times of oil reservoir development when developing an oil reservoir of a preset depth, and the oil reservoir production depth is the distance between the oil reservoir development position and the starting development point of the oil reservoir when the oil reservoir is in the development state.

[0064] S220: Determine an oil reservoir storage unit in a development state according to the oil reservoir producing depth, and determine a production indicator curve of the oil reservoir storage unit.

[0065] S230, obtaining the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculating the production degree value of the oil reservoir storage unit according to the oil reservoir reserve production formula, wherein the geological reserves include dynamic geological reserves and static geological reserves, and the oil reservoir reserve production formula is a percentage formula of the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit.

[0066] S240. Determine a relationship between single well oil pressure and cumulative liquid production based on the actual oil reservoir production data.

[0067] Specifically, the cumulative liquid production of the first and second stages, as well as the single-well oil pressure corresponding to the cumulative liquid production, are extracted from the actual oil reservoir production data. According to the corresponding relationship between the cumulative liquid production and the single-well oil pressure, a relationship diagram between the single-well oil pressure and the cumulative liquid production is drawn, and the relationship formula between the single-well oil pressure and the cumulative liquid production is determined.

[0068] S250. Determine the recoverable volume of the oil reservoir when the oil reservoir is at a first preset single well oil pressure according to the relationship between the single well oil pressure and the cumulative liquid production.

[0069] Specifically, there is a first-stage linear relationship and a second-stage linear relationship in the relationship between the single-well oil pressure and the cumulative liquid production. The horizontal coordinate corresponding to the intersection of the first-stage linear relationship and the second-stage linear relationship is the recoverable volume of the reservoir at the first preset single-well oil pressure.

[0070] S260, predicting the predicted recoverable volume of the oil reservoir when the oil reservoir is at a second preset single well oil pressure according to the relationship between the single well oil pressure and the cumulative liquid production.

[0071] Specifically, according to the first stage linear relationship in the relationship between the single well oil pressure and the cumulative liquid production, the predicted recoverable volume of the reservoir when the single well oil pressure is at the second preset single well oil pressure is calculated.

[0072] For example, Figure 5 It is the relationship diagram between single well oil pressure and cumulative liquid production. The horizontal axis of the plane rectangular coordinate system represents the single well oil pressure, p t -p t1 is the oil pressure drop in the first stage, the liquid production per unit pressure drop is m1, and the cumulative liquid production in the first stage is N p1 , the horizontal axis is the recoverable volume of the reservoir at the first preset single well oil pressure p t1 , the predicted recoverable volume of the reservoir when the second single well oil pressure is preset is N p1(预) .

[0073] S270. Determine the cumulative production ratio of the reservoir by the ratio of the recoverable volume of the reservoir to the predicted recoverable volume of the reservoir, and quantify the potential for utilization of the reservoir reserves based on the cumulative production ratio of the reservoir.

[0074] Specifically, the cumulative production ratio of a reservoir is the ratio between the recoverable volume of the reservoir and the predicted recoverable volume of the reservoir, where the recoverable volume of the reservoir is expressed as N p1 =m1(p t -p t1 ), the cumulative production ratio of the reservoir is expressed as

[0075] As an optional but not limiting implementation method, the potential for producing oil reservoir reserves is quantified according to the cumulative production ratio of the oil reservoir, including steps B1-B2:

[0076] Step B1: determining the actual producing reserves of the oil reservoir of the oil reservoir storage unit according to the cumulative production ratio of the oil reservoir.

[0077] Specifically, if it is the first oil reservoir storage unit and the second oil reservoir storage unit, the address reserves used are N a12 , the actual producing reserves of the reservoir unit a*N a12 .

[0078] Step B2: determining the potential for producing the remaining reserves of the oil reservoir storage unit according to the actually produced reserves of the oil reservoir.

[0079] Specifically, if it is the first oil reservoir storage unit and the second oil reservoir storage unit, the expression for determining the potential for producing the remaining reserves of the oil reservoir of the oil reservoir storage unit from the actual produced reserves of the oil reservoir is as follows:

[0080] (100-a)*N a12

[0081] For example, if it is the third oil reservoir unit, the determination of the oil reservoir reserve production potential needs to refer to the second stage linear relationship of the single well oil pressure and cumulative liquid production relationship diagram, p t1 -p t2 is the oil pressure drop in the second stage, the liquid production per unit pressure drop is m2, and the cumulative liquid production in the second stage is N p2 -N p1 , the horizontal axis is the recoverable volume of the reservoir at the first preset single well oil pressure p t2 , the predicted recoverable volume of the reservoir when the second single well oil pressure is preset is N p2(预) , then the recoverable volume of the reservoir is expressed as N p2 =m2(p t1 -p t2 ), the cumulative production ratio of the reservoir is expressed as The address reserve used is N a13 -N a12 , the actual producing reserves of the reservoir unit a*(N a13 -N a12 ), the expression of the remaining reserves producing potential of the reservoir unit is: (100-a)*(Na13 -N a12 ).

[0082] The embodiment of the present application proposes a method for evaluating the potential for producing oil reservoir reserves. The method comprises drawing an original static temperature curve and a flow temperature curve at different times according to actual oil reservoir production data, and determining the oil reservoir producing depth according to the intersection between the original static temperature curve and the flow temperature curve; determining the oil reservoir storage unit in the development state according to the oil reservoir producing depth, and determining the production indicator curve of the oil reservoir storage unit; obtaining the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculating the producing degree of the oil reservoir storage unit according to the oil reservoir reserve producing formula; determining a single well oil pressure and cumulative liquid production curve according to the actual oil reservoir production data, and quantifying the oil reservoir reserve producing potential in combination with the geological reserves. The method determines the oil reservoir producing depth, judges the oil reservoir storage unit in the development state, and further quantifies the oil reservoir reserve producing potential through the production indicator curve and the single well oil pressure and cumulative liquid production curve. The method can accurately and precisely evaluate the reserve producing potential of fault-controlled carbonate oil reservoirs, and provide data support for further improving the reserve producing degree.

[0083] Figure 6 The flow chart of a method for evaluating the potential of oil reservoir reserves provided by an embodiment of the present invention is based on the above embodiment. This embodiment explains in detail how to obtain the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculate the production degree value of the oil reservoir storage unit according to the oil reservoir reserve production formula. Figure 6 As shown, the method may include:

[0084] S310. Draw the original static temperature curve and the flow temperature curves at different times based on the actual oil reservoir exploitation data, and determine the reservoir production depth based on the intersection between the original static temperature curve and the flow temperature curve, wherein the flow temperature curve is a curve drawn according to the temperature values ​​at different times of oil reservoir development when developing an oil reservoir of a preset depth, and the oil reservoir production depth is the distance between the oil reservoir development position and the starting development point of the oil reservoir when the oil reservoir is in the development state.

[0085] S320: Determine an oil reservoir storage unit in a development state according to the oil reservoir producing depth, and determine a production indicator curve of the oil reservoir storage unit.

[0086] As an optional but not limiting implementation, determining the oil reservoir storage unit in the development state according to the oil reservoir producing depth includes steps C1-C3:

[0087] Step C1: When the oil reservoir producing depth is less than a first preset producing depth, the oil reservoir storage unit to be produced is the first oil reservoir storage unit and the second oil reservoir storage unit.

[0088] For example, Figure 7 It is a three-dimensional picture of the reservoir. Figure 7 It can be seen that each oil reservoir storage unit has a depth range value. When the oil reservoir producing depth is within the depth range value of the first oil reservoir storage unit, that is, the oil reservoir producing depth is less than the first preset producing depth, it can be determined that the activated oil reservoir storage unit is the first oil reservoir storage unit and the second oil reservoir storage unit.

[0089] Step C2: When the oil reservoir producing depth is greater than the first preset producing depth and less than the second preset producing depth, the oil reservoir storage unit to be produced is the third oil reservoir storage unit.

[0090] Specifically, when the oil reservoir producing depth is within the depth range of the third oil reservoir storage unit, that is, the oil reservoir producing depth is greater than the first preset producing depth and less than the second preset producing depth, it can be determined that the activated oil reservoir storage unit is the third oil reservoir storage unit.

[0091] Step C3: When the oil reservoir producing depth is greater than or equal to the second preset producing depth, the activated oil reservoir storage unit is the fourth oil reservoir storage unit.

[0092] Specifically, when the oil reservoir producing depth is within the depth range of the fourth oil reservoir storage unit, that is, the oil reservoir producing depth is greater than or equal to the second preset producing depth, it can be determined that the activated oil reservoir storage unit is the fourth oil reservoir storage unit.

[0093] S330: Determine the relationship between the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit and the reserve production degree value.

[0094] Among them, the reserve utilization degree value can be understood as a numerical value for evaluating the degree of utilization of the oil reservoir.

[0095] Specifically, the static geological reserves of different reservoir units are predicted based on the fracture-cavity carving method, and the Figure 3 The production indicator curve diagram shown predicts the producing geological reserves of different oil reservoir storage units, and then determines the ratio of dynamic geological reserves to static geological reserves of oil reservoir storage units, and judges the relationship between the ratio of dynamic geological reserves to static geological reserves of oil reservoir storage units and the value of reserve production degree.

[0096] S340. When the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit is greater than and equal to the reserve production degree value, the production degree value of the oil reservoir storage unit is calculated by the oil reservoir reserve production formula, wherein the reserve production degree value is numerical data used to judge the development degree of the oil reservoir.

[0097] For example, to determine the currently produced oil reservoir unit, refer to Figure 3Determine the dynamic address reserves of the reservoir unit, predict the static geological reserves of the reservoir unit according to the fracture-cavity carving method, take the percentage of the sum of the dynamic address reserves of the reservoir unit to the sum of the static address reserves of the reservoir unit as the current reserve production degree value, compare the relationship between the ratio and the reserve production degree value of 60%, if it is greater than or equal to the relationship, then the reserve production degree of the reservoir unit belongs to strong production, and calculate the production degree value of the reservoir unit by the reservoir reserve production formula, wherein the reservoir reserve production formula is as follows:

[0098]

[0099] S350. When the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit is less than the reserve production degree value, the oil reservoir reserve production potential of the oil reservoir storage unit is increased, and the production degree value of the oil reservoir storage unit is calculated by the oil reservoir reserve production formula.

[0100] Specifically, if the ratio of the dynamic geological reserves to the static geological reserves of an oil reservoir unit is less than 60% of the reserve production degree, the reserve production degree of the oil reservoir unit is weak production. In this case, the reserve production potential is increased through deepening, side drilling and other measures, and then the production degree value of the oil reservoir unit is calculated using the oil reservoir reserve production formula.

[0101] For example, if the reserve production degree of the third oil reservoir storage unit is weak, the reserve production potential is improved through side drilling measures; if the reserve production degree of the fourth oil reservoir storage unit is weak, the reserve production potential is improved through reservoir deepening measures.

[0102] S360, determining a single well oil pressure and cumulative liquid production curve based on the actual oil reservoir production data, and quantifying the oil reservoir reserve production potential in combination with the geological reserves.

[0103] The embodiment of the present application proposes a method for evaluating the potential for producing oil reservoir reserves. The method comprises drawing an original static temperature curve and a flow temperature curve at different times according to actual oil reservoir production data, and determining the oil reservoir producing depth according to the intersection between the original static temperature curve and the flow temperature curve; determining the oil reservoir storage unit in the development state according to the oil reservoir producing depth, and determining the production indicator curve of the oil reservoir storage unit; obtaining the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculating the producing degree of the oil reservoir storage unit according to the oil reservoir reserve producing formula; determining a single well oil pressure and cumulative liquid production curve according to the actual oil reservoir production data, and quantifying the oil reservoir reserve producing potential in combination with the geological reserves. The method determines the oil reservoir producing depth, judges the oil reservoir storage unit in the development state, and further quantifies the oil reservoir reserve producing potential through the production indicator curve and the single well oil pressure and cumulative liquid production curve. The method can accurately and precisely evaluate the reserve producing potential of fault-controlled carbonate oil reservoirs, and provide data support for further improving the reserve producing degree.

[0104] Embodiment 2

[0105] Figure 8 This is a schematic diagram of the structure of a reservoir reserve production potential evaluation device provided in the second embodiment of the present invention. The device can execute the reservoir reserve production potential evaluation method provided in any embodiment of the present application, and has the corresponding functional modules and beneficial effects of the execution method. Figure 8 As shown, the device may include:

[0106] The oil reservoir producing depth determination module 410 is used to draw the original static temperature curve and the flow temperature curve at different times according to the actual oil reservoir exploitation data, and determine the oil reservoir producing depth according to the intersection between the original static temperature curve and the flow temperature curve, wherein the flow temperature curve is a curve drawn according to the temperature values ​​at different times of the oil reservoir development when developing an oil reservoir of a preset depth, and the oil reservoir producing depth is the distance between the oil reservoir development position and the oil reservoir starting development point when the oil reservoir is in the development state;

[0107] The production indicator curve determination module 420 is used to determine the oil reservoir storage unit in the development state according to the oil reservoir producing depth, and determine the production indicator curve of the oil reservoir storage unit;

[0108] The producing degree evaluation module 430 is used to obtain the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculate the producing degree value of the oil reservoir storage unit according to the oil reservoir reserve producing formula, wherein the geological reserves include dynamic geological reserves and static geological reserves, and the oil reservoir reserve producing formula is a percentage formula of the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit;

[0109] The producing potential quantification module 440 is used to determine the single well oil pressure and cumulative liquid production curve according to the actual oil reservoir production data, and quantify the producing potential of the oil reservoir reserves in combination with the geological reserves.

[0110] Furthermore, the potential quantification module 440 includes:

[0111] A liquid production relationship determination unit, used to determine a relationship between single well oil pressure and cumulative liquid production based on the actual reservoir production data;

[0112] An oil reservoir recoverable volume determination unit, used to determine the recoverable volume of the oil reservoir when the oil reservoir is at a first preset single well oil pressure according to the relationship between the single well oil pressure and the cumulative liquid production;

[0113] A unit for determining the predicted recoverable volume of an oil reservoir, used for predicting the predicted recoverable volume of an oil reservoir when the oil reservoir is at a second preset single well oil pressure according to the relationship between the single well oil pressure and the accumulated liquid production;

[0114] The oil reservoir reserve production potential quantification unit is used to determine the proportion of the cumulative production of the oil reservoir through the ratio of the recoverable amount of the oil reservoir to the predicted recoverable amount of the oil reservoir, and to quantify the potential for oil reservoir reserve production based on the proportion of the cumulative production of the oil reservoir.

[0115] Furthermore, the oil reservoir reserve production potential quantification unit is specifically used for:

[0116] Determine the actual producing reserves of the oil reservoir of the oil reservoir storage unit according to the cumulative production ratio of the oil reservoir;

[0117] The remaining reserve producing potential of the oil reservoir storage unit is determined according to the actually produced reserves of the oil reservoir.

[0118] Furthermore, the reservoir producing depth determination module 410 includes:

[0119] a flow-temperature relationship determination unit, configured to determine an original static temperature relationship according to the original static temperature curve, and determine a flow-temperature relationship according to the flow-temperature curve;

[0120] The oil reservoir producing depth determining unit is used to determine the value of the ordinate of the intersection on the original static temperature curve and the flow temperature curve as the oil reservoir producing depth when there is an intersection between the original static temperature curve and the flow temperature curve.

[0121] Furthermore, the reservoir producing depth determination unit is specifically used for:

[0122] According to the rule that the horizontal coordinates of the intersection points on the original static temperature curve and the flow temperature curve have equal values, an equal relationship of the reservoir producing depth with respect to the horizontal coordinate is established;

[0123] The producing depth of the oil reservoir is determined according to the equivalent relationship of the producing depth of the oil reservoir.

[0124] Furthermore, the production indicator curve determination module 420 includes:

[0125] A first reservoir division unit is used for dividing the oil reservoir into a first oil reservoir storage unit and a second oil reservoir storage unit when the oil reservoir producing depth is less than a first preset producing depth;

[0126] The second reservoir division unit is used for, when the producing depth of the oil reservoir is greater than the first preset producing depth and less than the second preset producing depth, the oil reservoir storage unit to be produced is the third oil reservoir storage unit;

[0127] The third reservoir division unit is used for, when the producing depth of the oil reservoir is greater than or equal to the second preset producing depth, the activated oil reservoir storage unit is the fourth oil reservoir storage unit.

[0128] Furthermore, the mobilization degree evaluation module 430 includes:

[0129] A producing degree judging unit, used to judge the relationship between the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit and the producing degree value of the reserves;

[0130] A first producing degree numerical calculation unit is used to calculate the producing degree numerical value of the oil reservoir storage unit by using the oil reservoir reserve producing formula when the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit is greater than and equal to the reserve producing degree value, wherein the reserve producing degree value is numerical data used to judge the development degree of the oil reservoir;

[0131] The second producing degree value calculation unit is used to increase the oil reservoir reserve producing potential of the oil reservoir storage unit when the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit is less than the reserve producing degree value, and calculate the producing degree value of the oil reservoir storage unit by the oil reservoir reserve producing formula.

[0132] The oil reservoir reserve production potential evaluation device provided in the embodiment of the present invention can execute the oil reservoir reserve production potential evaluation method provided in any embodiment of the present invention mentioned above, and has the corresponding functions and beneficial effects of executing the oil reservoir reserve production potential evaluation method. For detailed process, please refer to the relevant operations of the oil reservoir reserve production potential evaluation method in the aforementioned embodiment.

[0133] Embodiment 3

[0134] Fig. 9A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0135] like Fig. 9 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0136] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0137] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a method for evaluating the potential for oil reservoir reserve production.

[0138] In some embodiments, the method for evaluating the potential for producing oil reserves may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for evaluating the potential for producing oil reserves described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the method for evaluating the potential for producing oil reserves in any other appropriate manner (e.g., by means of firmware).

[0139] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0140] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0141] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0142] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0143] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0144] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0145] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0146] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for evaluating the potential of oil reservoir reserves, characterized in that: include: Draw an original static temperature curve and flow temperature curves at different times according to actual oil reservoir exploitation data, and determine the oil reservoir production depth according to the intersection between the original static temperature curve and the flow temperature curve, wherein the flow temperature curve is a curve drawn according to the temperature values ​​at different times of oil reservoir development when developing an oil reservoir of a preset depth, and the oil reservoir production depth is the distance between the oil reservoir development position and the oil reservoir starting development point when the oil reservoir is in the development state; Determining the oil reservoir storage unit in the development state according to the oil reservoir producing depth, and determining the production indicator curve of the oil reservoir storage unit; Obtaining the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculating the production degree value of the oil reservoir storage unit according to the oil reservoir reserve production formula, wherein the geological reserves include dynamic geological reserves and static geological reserves, and the oil reservoir reserve production formula is a percentage formula of the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit; The single well oil pressure and cumulative liquid production curve is determined based on the actual oil reservoir production data, and the oil reservoir reserve production potential is quantified in combination with the geological reserves.

2. The method according to claim 1, characterized in that Determine the single well oil pressure and cumulative liquid production curve based on the actual oil reservoir production data, and quantify the oil reservoir reserve production potential in combination with the geological reserves, including: Determine the relationship between single well oil pressure and cumulative liquid production based on the actual oil reservoir production data; Determine the recoverable volume of the oil reservoir when the oil reservoir is at a first preset single well oil pressure according to the relationship between the single well oil pressure and the cumulative liquid production; Predicting the recoverable volume of the oil reservoir when the oil reservoir is at a second preset single well oil pressure according to the relationship between the single well oil pressure and the accumulated liquid production; The ratio of the recoverable volume of the reservoir to the predicted recoverable volume of the reservoir is used to determine the cumulative production ratio of the reservoir, and the potential for reservoir reserve utilization is quantified based on the cumulative production ratio of the reservoir.

3. The method according to claim 2, characterized in that Quantify the potential for reservoir reserves to be utilized based on the percentage of cumulative reservoir production, including: Determine the actual producing reserves of the oil reservoir of the oil reservoir storage unit according to the cumulative production ratio of the oil reservoir; The remaining reserve producing potential of the oil reservoir storage unit is determined according to the actually produced reserves of the oil reservoir.

4. The method according to claim 1, characterized in that: Determining the reservoir producing depth according to the intersection point between the original static temperature curve and the flowing temperature curve includes: Determine an original static temperature relationship according to the original static temperature curve, and determine a flow-temperature relationship according to the flow-temperature curve; When there is an intersection between the original static temperature curve and the flow temperature curve, the value of the ordinate of the intersection on the original static temperature curve and the flow temperature curve is determined to be the reservoir producing depth.

5. The method according to claim 4, characterized in that Determining the value of the ordinate of the intersection point on the original static temperature curve and the flow temperature curve as the reservoir producing depth includes: According to the rule that the horizontal coordinates of the intersection points on the original static temperature curve and the flow temperature curve have equal values, an equal relationship of the reservoir producing depth with respect to the horizontal coordinate is established; The producing depth of the oil reservoir is determined according to the equivalent relationship of the producing depth of the oil reservoir.

6. The method according to claim 1, characterized in that Determining the oil reservoir storage unit in the development state according to the oil reservoir producing depth includes: When the oil reservoir producing depth is less than the first preset producing depth, the oil reservoir storage unit to be produced is the first oil reservoir storage unit and the second oil reservoir storage unit; When the oil reservoir producing depth is greater than the first preset producing depth and less than the second preset producing depth, the activated oil reservoir storage unit is the third oil reservoir storage unit; When the oil reservoir producing depth is greater than or equal to the second preset producing depth, the activated oil reservoir storage unit is the fourth oil reservoir storage unit.

7. The method according to claim 1, characterized in that Obtaining the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculating the production degree value of the oil reservoir storage unit according to the oil reservoir reserve production formula, including: Determine the relationship between the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit and the reserve production degree value; When the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit is greater than and equal to the reserve production degree value, the production degree value of the oil reservoir storage unit is calculated by the oil reservoir reserve production formula, wherein the reserve production degree value is a numerical data used to judge the development degree of the oil reservoir; When the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit is less than the reserve production degree value, the oil reservoir reserve production potential of the oil reservoir storage unit is increased, and the production degree value of the oil reservoir storage unit is calculated by the oil reservoir reserve production formula.

8. An oil reservoir reserve production potential evaluation device, characterized in that: include: The oil reservoir producing depth determination module is used to draw the original static temperature curve and the flow temperature curve at different times according to the actual oil reservoir exploitation data, and determine the oil reservoir producing depth according to the intersection between the original static temperature curve and the flow temperature curve, wherein the flow temperature curve is a curve drawn according to the temperature values ​​at different times of oil reservoir development when developing an oil reservoir of a preset depth, and the oil reservoir producing depth is the distance between the oil reservoir development position and the oil reservoir starting development point when the oil reservoir is in the development state; A production indicator curve determination module is used to determine the oil reservoir storage unit in the development state according to the oil reservoir producing depth, and determine the production indicator curve of the oil reservoir storage unit; A producing degree evaluation module is used to obtain the geological reserves of the oil reservoir storage unit from the production indicator curve, and calculate the producing degree value of the oil reservoir storage unit according to the oil reservoir reserve producing formula, wherein the geological reserves include dynamic geological reserves and static geological reserves, and the oil reservoir reserve producing formula is a percentage formula of the ratio of the dynamic geological reserves to the static geological reserves of the oil reservoir storage unit; The production potential quantification module is used to determine the single well oil pressure and cumulative liquid production curve based on the actual oil reservoir production data, and quantify the oil reservoir reserve production potential in combination with the geological reserves.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for evaluating the potential for production of oil reservoir reserves according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for evaluating the potential for production of oil reservoir reserves according to any one of claims 1 to 7 when executed.

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