A method, device, equipment and medium for evaluating well pattern economy

Abstract

The embodiment of the application discloses a kind of well pattern economy evaluation method, device, equipment and medium. Among them, the method comprises: based on Darcy formula, the oil phase seepage velocity of target grid is calculated;According to the oil phase seepage velocity threshold and the oil phase seepage velocity, the target flow speed interval to which the target grid belongs is determined;According to the target speed interval to which each grid belongs, the economic evaluation result of target well pattern is determined.The technical scheme determines the target flow speed interval to which the oil phase seepage velocity of target grid belongs by oil phase seepage velocity threshold, and then determines the economic evaluation result of target well pattern according to the target speed interval to which each grid belongs, the relationship between fluid flow in formation and economic benefit is established in the present scheme, the well pattern is evaluated from the economic point of view, that is, the well pattern control degree is reflected from the economic point of view.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil and gas development, and particularly relates to a well pattern economy evaluation method, device, equipment and medium. BACKGROUND

[0002] In the field of oil and gas field development, well pattern adjustment is an important means to improve the development effect of water drive reservoirs in the high water cut stage, and well pattern control degree evaluation is of great significance to well pattern adjustment decision. When the well pattern control degree is good, well pattern adjustment is not needed, and when the well pattern control degree is poor, well pattern adjustment is needed.

[0003] At present, the well pattern control degree evaluation method mainly judges the good and bad of the well pattern control degree according to the distribution of the remaining oil in the formation. This method only considers the remaining oil in the well pattern, so that the evaluation result is one-sided. SUMMARY

[0004] The present application provides a well pattern economy evaluation method, device, equipment and medium, which can establish the relationship between fluid flow in the formation and economic benefit, and evaluate the well pattern from the economic point of view.

[0005] According to one aspect of the present application, a well pattern economy evaluation method is provided, which comprises:

[0006] calculating the oil phase seepage velocity of the target grid based on the Darcy formula;

[0007] determining the target flow rate interval to which the target grid belongs according to the oil phase seepage velocity threshold and the oil phase seepage velocity;

[0008] determining the economic evaluation result of the target well pattern according to the target velocity interval of each grid.

[0009] According to another aspect of the present application, a well pattern economy evaluation device is provided, which comprises:

[0010] an oil phase seepage velocity calculation module configured to calculate the oil phase seepage velocity of the target grid based on the Darcy formula;

[0011] a target flow rate interval determination module configured to determine the target flow rate interval to which the target grid belongs according to the oil phase seepage velocity threshold and the oil phase seepage velocity;

[0012] an economic evaluation result determination module configured to determine the economic evaluation result of the target well pattern according to the target velocity interval of each grid.

[0013] According to another aspect of the present application, an electronic device is provided, which comprises:

[0014] at least one processor; and

[0015] a memory in communication with the at least one processor; wherein,

[0016] 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 to enable the at least one processor to perform the method for evaluating the economic efficiency of the well pattern according to any one of the embodiments of the present application.

[0017] According to another aspect of the present application, a computer readable storage medium is provided, which stores computer instructions for enabling a processor to implement the method for evaluating the economic efficiency of the well pattern according to any one of the embodiments of the present application when executed by the processor.

[0018] The technical solution of the embodiments of the present application comprises: calculating the oil phase seepage velocity of a target grid based on the Darcy formula; determining the target velocity interval to which the target grid belongs according to the oil phase seepage velocity threshold and the oil phase seepage velocity; and determining the economic efficiency evaluation result of the target well pattern according to the target velocity interval to which each grid belongs. The technical solution determines the target velocity interval to which the oil phase seepage velocity of the target grid belongs through the oil phase seepage velocity threshold, and then determines the economic efficiency evaluation result of the target well pattern according to the target velocity interval to which each grid belongs. The solution establishes the relationship between the fluid flow in the formation and the economic benefits, and evaluates the well pattern from the economic point of view, that is, reflects the good or bad of the well pattern control degree from the economic point of view.

[0019] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a flow chart of a method for evaluating the economic efficiency of a well pattern according to the first embodiment of the present application;

[0022] Figure 2 is a grid schematic diagram according to the first embodiment of the present application;

[0023] Figure 3 is a flow chart of a method for evaluating the economic efficiency of a well pattern according to the second embodiment of the present application;

[0024] Figure 4 is a structural schematic diagram of an evaluation device for well pattern economy according to Embodiment Three of the present application;

[0025] Figure 5 is a structural schematic diagram of an electronic device for implementing an evaluation method for well pattern economy. DETAILED DESCRIPTION

[0026] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", "target" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] Embodiment One

[0029] Figure 1 A flowchart of an evaluation method for well pattern economy is provided for Embodiment One of the present application. The present application can be applicable to the case of evaluating the economy of a well pattern. The method can be executed by an evaluation device for well pattern economy, which can be realized in the form of hardware and / or software, and can be configured in an electronic device with data processing capability. As shown in the figure, the method comprises: Figure 1

[0030] S110, calculating the oil phase seepage velocity of the target grid based on the Darcy formula.

[0031] ​In the embodiments of the present application, the target grid refers to a grid in the target well pattern, and the target well pattern can be a well pattern pre-divided in the target reservoir. It should be noted that in actual applications, the scheme of the present application can need to calculate the oil phase seepage velocity for each grid respectively, and in this case, the target grid is taken as an example for introduction, and the calculation manner of the remaining grids can be the same.

[0032] Specifically, parameters required for calculating the oil phase seepage velocity of the target grid are acquired, such as grid pressure, oil phase effective permeability, crude oil viscosity, grid length, etc., and then the oil phase seepage velocity of the target grid in the x direction is calculated based on the Darcy formula, and similarly, the oil phase seepage velocity of the target grid in the y direction is calculated based on the Darcy formula, and the oil phase seepage velocity of the target grid is calculated according to the oil phase seepage velocity in the x direction and the oil phase seepage velocity in the y direction.

[0033] In the embodiments of the present application, the oil phase seepage velocity of the target grid is calculated based on the Darcy formula, which includes: the oil phase seepage velocity of the target grid in the x direction is calculated by using the following formula:

[0034]

[0035] Wherein, v x is the oil phase seepage velocity of the target grid in the x direction, K0 is the oil phase effective permeability, μ0 is the crude oil viscosity, Δx is the grid step length, and ΔP is the difference of the grid pressure. It should be noted that when calculating the oil phase seepage velocity of the target grid in the x direction, Δx can be the grid step length along the x direction, and ΔP can be the difference of the pressure of adjacent grids along the x direction.

[0036] The oil phase seepage velocity of the target grid in the y direction is calculated by using the following formula:

[0037]

[0038] Wherein, v y is the oil phase seepage velocity of the target grid in the y direction, K0 is the oil phase effective permeability, μ0 is the crude oil viscosity, Δy is the grid step length, and ΔP is the difference of the grid pressure. It should be noted that when calculating the oil phase seepage velocity of the target grid in the y direction, Δy can be the grid step length along the y direction, and ΔP can be the difference of the pressure of adjacent grids along the y direction.

[0039] The oil phase seepage velocity of the target grid is calculated by using the following formula:

[0040]

[0041] Wherein, v t is the oil phase seepage velocity of the target grid.

[0042] Further, the well pattern, a schematic diagram of the grid is as shown in Figure 2 , Figure 2 Further, the well pattern, a schematic diagram of the grid is as shown in Figure 2 , Figure 2 Further, the well pattern, a schematic diagram of the grid is as shown in ,

[0043] Step A1, the oil phase seepage velocity of the target grid (i.e. the grid with the subscript (n, n)) in the x direction is calculated by the following formula:

[0044]

[0045] Wherein, P (n , n) is the grid pressure of the (n, n) grid, P (n , n+1) is the grid pressure of the (n, n+1) grid, x (n , n) is the grid length of the (n, n) grid in the x direction, x (n , n+1) is the grid length of the (n, n+1) grid in the x direction.

[0046] Step A2, the oil phase seepage velocity of the target grid (i.e. the grid with the subscript (n, n)) in the y direction is calculated by the following formula:

[0047]

[0048] Wherein, y (n , n) is the grid length of the (n, n) grid in the y direction, y (n+1 , n) is the grid length of the (n+1, n) grid in the y direction.

[0049] Step A3, the oil phase seepage velocity of the target grid is calculated by the following formula:

[0050]

[0051] S120, according to the oil phase seepage velocity threshold and the oil phase seepage velocity, determine the target flow velocity interval to which the target grid belongs.

[0052] The oil phase seepage velocity threshold value can reflect the corresponding oil phase seepage velocity under different economic benefits. For example, if the oil phase seepage velocity of a certain grid reaches a certain oil phase seepage velocity threshold value, it means that the oil and gas exploitation work of the grid is break-even, that is, the oil and gas exploitation in the grid does not lose money. Obviously, the economic benefit is not only the break-even situation, but also the situations of break-even, 10% profit, 20% profit and the like within a preset time period, that is, the number of oil phase seepage velocity threshold values can be multiple, and each threshold value can reflect different break-even situations.

[0053] Specifically, the calculation process of the oil phase seepage velocity threshold value can be as follows: the oil production of the wellbore is calculated according to the oil production cost, crude oil price, tax, and exploitation fixed cost, and then the oil production of the wellbore is converted into the oil phase seepage velocity threshold value of a grid.

[0054] Further, the size relationship between the oil phase seepage velocity and the oil phase seepage velocity threshold value can be compared to obtain the target flow velocity interval to which the target grid belongs. For example, the oil phase seepage velocity threshold value is 2, and the flow velocity interval is 3. After obtaining the oil phase seepage velocity of the target grid, the target flow velocity interval to which the target grid belongs can be determined.

[0055] S130, according to the target velocity interval to which each grid belongs, the economic evaluation result of the target well pattern is determined.

[0056] In the embodiments of the present application, after obtaining the target flow velocity interval to which the target grid belongs, the target flow velocity intervals to which other grids belong are calculated in the same way, and the target velocity intervals to which each grid belongs are obtained. Obviously, the economy of different intervals is different (that is, the economic benefits of different intervals are different), and then the economic evaluation result of the target well pattern can be determined according to the target velocity interval to which each grid belongs.

[0057] For example, there are three flow velocity intervals, and the economic benefits reflected by the three intervals are different. If the target well pattern grid belongs to the velocity interval with better economic benefit, the more the velocity intervals with better economic benefit in the target well pattern grid belong to, the better the economic evaluation result of the target well pattern is, otherwise, the worse the economic evaluation result of the target well pattern is.

[0058] The technical scheme of the embodiment of the application comprises: calculating the oil phase seepage velocity of a target grid based on the Darcy formula; determining the target flow velocity interval to which the target grid belongs according to an oil phase seepage velocity threshold value and the oil phase seepage velocity; and determining the economic evaluation result of the target well pattern according to the target velocity intervals to which the grids belong. The technical scheme determines the target flow velocity interval to which the oil phase seepage velocity of the target grid belongs through the oil phase seepage velocity threshold value, and then determines the economic evaluation result of the target well pattern according to the target velocity intervals to which the grids belong. The scheme establishes the relationship between the fluid flow in the formation and the economic benefits, and evaluates the well pattern from the economic point of view, that is, reflects the good or bad of the well pattern control degree from the economic point of view.

[0059] Embodiment two

[0060] Figure 3 The flow chart of the well pattern economic evaluation method provided in the embodiment two of the application is optimized based on the above-mentioned embodiment.

[0061] As Figure 3 shown, the method of the embodiment of the application specifically comprises the following steps:

[0062] S210, calculating the oil phase seepage velocity of a target grid based on the Darcy formula.

[0063] S220, determining the target flow velocity interval to which the target grid belongs according to an oil phase seepage velocity threshold value and the oil phase seepage velocity.

[0064] In the embodiment of the application, optionally, the oil phase seepage velocity threshold value comprises a high seepage velocity threshold value and a low seepage velocity threshold value; and correspondingly, determining the target flow velocity interval to which the target grid belongs according to the oil phase seepage velocity threshold value and the oil phase seepage velocity comprises: if the oil phase seepage velocity is less than or equal to the low seepage velocity threshold value, the target grid is located in a low flow velocity zone; if the oil phase seepage velocity is greater than the low seepage velocity threshold value and less than or equal to the high seepage velocity threshold value, the target grid is located in a medium flow velocity zone; and if the oil phase seepage velocity is greater than the high seepage velocity threshold value, the target grid is located in a high flow velocity zone.

[0065] In the embodiment of the application, the flow velocity intervals are a low flow velocity zone, a medium flow velocity zone and a high flow velocity zone, the low flow velocity zone corresponds to a lower economic benefit, and the high flow velocity zone corresponds to a higher economic benefit.

[0066] In the embodiment of the application, optionally, the determination process of the high seepage velocity threshold value and the low seepage velocity threshold value comprises steps B1-B3:

[0067] Step B1, calculating the single-well oil production per unit time of a target area in a preset time period, which reflects the oil production of a wellbore under the condition of break-even.

[0068] The single-well oil production is calculated by the following formula:

[0069]

[0070] Q = Q0(1 + nD0t) lim , where Q is the single-well oil production, in m / d, p is the oil density, in t / m3, C is the variable cost per ton of oil, in yuan / t, C is the annual single-well fixed cost, in ten thousand yuan, P is the oil price, in yuan / t, and R is the tax per ton of oil, in yuan / t. 3 o 3 V G

[0071] Step B2, the single-well oil production is substituted into the expression of the hyperbolic decline law to obtain the new-well initial oil production corresponding to the single-well oil production at the initial oil production period of the wellbore.

[0072] In the embodiments of the present application, the expression of the hyperbolic decline law is as follows:

[0073]

[0074] Q = Q0(1 + nD0t) lim , where Q0 is the new-well initial oil production, Q is the single-well oil production, n is the decline index, D0 is the production decline rate, and t is the production time.

[0075] For example, the new-well initial oil production Q0 is calculated by the following formula:

[0076] Q0 = Q(1 + nD0t) lim 1 / n .

[0077] It should be noted that the oil production is high at the initial stage of wellbore production and will gradually decrease, and the decreasing process can be represented by the hyperbolic decline law.

[0078] Step B3, the low-permeability flow velocity threshold is calculated according to the single-well oil production, and the high-permeability flow velocity threshold is calculated according to the new-well initial oil production.

[0079] Specifically, the single-well oil production reflects the average daily oil production of a wellbore in a year under the condition of break-even, and the new-well initial oil production reflects the initial daily oil production of a new well under the condition of break-even, so the low-permeability flow velocity threshold corresponding to a grid can be calculated according to the single-well oil production, and the high-permeability flow velocity threshold corresponding to a grid can be calculated according to the new-well initial oil production.

[0080] ​​​​​​Optionally, according to the single-well oil production, the low seepage velocity threshold is calculated, and according to the initial oil production of the new well, the high seepage velocity threshold is calculated, including: the product of a preset constant, well spacing between wellbores, and reservoir thickness is determined as a target coefficient; the ratio of the single-well oil production to the target coefficient is determined as the low seepage velocity threshold; the ratio of the initial oil production of the new well to the target coefficient is determined as the high seepage velocity threshold.

[0081] For example, the preset constant can be 86400.

[0082] The target coefficient can be expressed as:

[0083] 86400*W*H;

[0084] Wherein, 86400 is a preset constant, W is well spacing between wellbores, and H is reservoir thickness.

[0085] For example, the low seepage velocity threshold is calculated by the following formula:

[0086]

[0087] Wherein, v tc1 is the low seepage velocity threshold.

[0088] Further, the high seepage velocity threshold is calculated by the following formula:

[0089]

[0090] Wherein, v tc2 is the high seepage velocity threshold.

[0091] S230, the area proportions of the grids corresponding to the high-flow-rate zone, the medium-flow-rate zone and the low-flow-rate zone in the target well pattern are calculated.

[0092] After determining the flow-rate intervals corresponding to each grid, the area of each grid is obtained; then the grid areas corresponding to the high-flow-rate zone, the medium-flow-rate zone and the low-flow-rate zone are calculated, and the total area is calculated, the grid area corresponding to the low-flow-rate zone is divided by the total area to obtain the area proportion of the grid corresponding to the low-flow-rate zone in the target well pattern; the grid area corresponding to the medium-flow-rate zone is divided by the total area to obtain the area proportion of the grid corresponding to the medium-flow-rate zone in the target well pattern; the grid area corresponding to the high-flow-rate zone is divided by the total area to obtain the area proportion of the grid corresponding to the high-flow-rate zone in the target well pattern.

[0093] S240, according to the area proportions of the high-flow-rate zone, the medium-flow-rate zone and the low-flow-rate zone, the economic evaluation result of the target well pattern is determined.

[0094] Obviously, the higher the area proportion of the high flow rate zone, the better the economic evaluation result of the target well pattern, i.e., the target well pattern can bring better economic benefits; the higher the area proportion of the low flow rate zone, the worse the economic evaluation result of the target well pattern, i.e., the economic benefits of the target well pattern are worse.

[0095] The technical scheme of the embodiment of the application calculates the average daily oil production of one wellbore in a year under the condition of break-even as the single-well oil production, and calculates the initial oil production of a new well according to the single-well oil production, the initial oil production of the new well reflecting the initial daily oil production of a new well under the condition of break-even, and then calculates the low-permeability flow rate threshold corresponding to a grid according to the single-well oil production, calculates the high-permeability flow rate threshold corresponding to a grid according to the initial oil production of the new well, determines the flow rate interval to which each grid belongs according to the low-permeability flow rate threshold and the high-permeability flow rate threshold and the oil phase permeability flow rate of the grid, and then determines the economic evaluation result of the target well pattern according to the area proportions of each flow rate interval in the target well pattern. The technical scheme considers the economic benefits of fluid flow in the reservoir, and determines the permeability flow rate partition boundary and proportion, thereby quantitatively evaluating the well pattern control degree (i.e., the economic evaluation result of the well pattern), and providing a basis for well pattern adjustment decision-making in the high water cut stage.

[0096] For example, in a specific embodiment, the single-well oil production is calculated according to the following parameters: the annual single-well fixed cost is 1,479,900 yuan, the crude oil density is 0.85 t / m 3 , the crude oil price is 3,000 yuan / t, the tax per ton of oil is 600 yuan / t, and the variable cost per ton of oil is 1,800 yuan / t. The single-well oil production is calculated to be 7.95 m 3 / d.

[0097] Further, the initial oil production of the new well is calculated according to the following parameters: the single-well oil production is 7.95 m 3 / d; the time for the production decline of the reservoir to reach the economic limit production is 30 years, the production decline index is 0.9, and the production decline rate is 0.2133. The initial oil production of the new well is calculated to be 53.74 m 3 / d.

[0098] The well spacing is set to be 235.9 m, and the oil layer thickness is set to be 10 m. The low-permeability flow rate threshold v tc1 is calculated to be 3.9 x 10 -6 m / s, and the high-permeability flow rate threshold v tc2 is calculated to be 2.6 x 10 -5 m / s.

[0099] Further, according to the oil phase seepage velocity of the target grid, a flow velocity interval to which the target grid belongs is determined, and the well pattern control degree is evaluated (the well pattern control degree is the economic evaluation result of the well pattern, and the better the well pattern control degree, the better the economic benefit).

[0100] Table 1: Flow velocity interval division table

[0101]

[0102] The area occupied by different velocity intervals is counted, as shown in Table 2. It can be seen that the well pattern control degree of the Y2 layer is higher, and the well pattern control degree of the Y1 layer is poorer.

[0103] Table 2: Area ratio of each flow velocity interval

[0104] Layer number Y1 Y2 High flow rate area ratio / % 40.4 64.9 Medium flow rate area ratio / % 39.6 33 Low flow rate area ratio / % 20.0 2.1

[0105] Example Three

[0106] Figure 4 A structural schematic diagram of an evaluation device for the economic efficiency of a well pattern provided in Example Three of the present application is shown in FIG. 3. The device can execute the evaluation method for the economic efficiency of a well pattern provided in any embodiment of the present application, and has the corresponding function modules and beneficial effects of the execution method. As shown in FIG. 3, the device includes: Figure 4 An oil phase seepage velocity calculation module 310 is configured to calculate the oil phase seepage velocity of a target grid based on the Darcy formula;

[0107] A target flow velocity interval determination module 320 is configured to determine a target flow velocity interval to which a target grid belongs according to an oil phase seepage velocity threshold and the oil phase seepage velocity;

[0108] An economic evaluation result determination module 330 is configured to determine the economic evaluation result of a target well pattern according to the target velocity interval to which each grid belongs.

[0109]

[0110] ​The technical scheme of the embodiment of the application comprises: an oil phase seepage velocity calculation module 310, configured to calculate the oil phase seepage velocity of a target grid based on the Darcy formula; a target flow velocity interval determination module 320, configured to determine the target flow velocity interval to which the target grid belongs according to an oil phase seepage velocity threshold value and the oil phase seepage velocity; and an economic evaluation result determination module 330, configured to determine the economic evaluation result of the target well pattern according to the target velocity interval to which each grid belongs. The technical scheme determines the target flow velocity interval to which the oil phase seepage velocity of the target grid belongs through the oil phase seepage velocity threshold value, and then determines the economic evaluation result of the target well pattern according to the target velocity interval to which each grid belongs. The scheme establishes the relationship between the fluid flow in the formation and the economic benefits, and evaluates the well pattern from the economic point of view, that is, reflects the good or bad of the well pattern control degree from the economic point of view.

[0111] Optionally, the oil phase seepage velocity threshold value comprises a high seepage velocity threshold value and a low seepage velocity threshold value.

[0112] The target flow velocity interval determination module 320 comprises:

[0113] The low flow velocity zone determination unit is configured to determine that the target grid is located in the low flow velocity zone if the oil phase seepage velocity is less than or equal to the low seepage velocity threshold value.

[0114] The medium flow velocity zone determination unit is configured to determine that the target grid is located in the medium flow velocity zone if the oil phase seepage velocity is greater than the low seepage velocity threshold value and less than or equal to the high seepage velocity threshold value.

[0115] The high flow velocity zone determination unit is configured to determine that the target grid is located in the high flow velocity zone if the oil phase seepage velocity is greater than the high seepage velocity threshold value.

[0116] Optionally, the device further comprises a threshold value determination module, specifically comprising:

[0117] The single-well oil production calculation unit is configured to calculate the single-well oil production per unit time of the target area in a preset time period, and the single-well oil production reflects the oil production of the wellbore under the condition of break-even;

[0118] The new well initial oil production calculation unit is configured to substitute the single-well oil production into the expression of the hyperbolic decline law to obtain the new well initial oil production corresponding to the single-well oil production in the initial oil production period of the wellbore.

[0119] The threshold value determination unit is configured to calculate the low seepage velocity threshold value according to the single-well oil production, and calculate the high seepage velocity threshold value according to the new well initial oil production.

[0120] Optionally, the expression of the hyperbolic decline law is as follows:

[0121]

[0122] wherein Q0 is the initial oil production of the new well, Q lim is the single well oil production, n is the decline index; D0 is the production decline rate, and t is the production time.

[0123] Optionally, the threshold determination unit comprises:

[0124] The target coefficient determination unit is configured to determine a product of a preset constant, a well spacing between wellbores, and a reservoir thickness as a target coefficient.

[0125] The low flow velocity threshold determination unit is configured to determine a ratio of the single well oil production to the target coefficient as a low flow velocity threshold.

[0126] The high flow velocity threshold determination unit is configured to determine a ratio of the initial oil production of the new well to the target coefficient as a high flow velocity threshold.

[0127] Optionally, the economic evaluation result determination module 330 comprises:

[0128] The area ratio calculation unit is configured to calculate an area ratio of the grid corresponding to the high flow velocity zone, the medium flow velocity zone, and the low flow velocity zone in the target well pattern.

[0129] The economic evaluation result determination unit is configured to determine an economic evaluation result of the target well pattern according to the area ratios of the high flow velocity zone, the medium flow velocity zone, and the low flow velocity zone.

[0130] Optionally, the oil phase flow velocity calculation module 310 comprises:

[0131] The first oil phase flow velocity calculation unit is configured to calculate an oil phase flow velocity of the target grid in the x direction by using the following formula:

[0132]

[0133] wherein v x is the oil phase flow velocity of the target grid in the x direction, K0 is the oil phase effective permeability, μ0 is the crude oil viscosity, Δx is the grid step length, and ΔP is the grid pressure difference.

[0134] The second oil phase flow velocity calculation unit is configured to calculate an oil phase flow velocity of the target grid in the y direction by using the following formula:

[0135]

[0136] wherein v y is the oil phase flow velocity of the target grid in the y direction, K0 is the oil phase effective permeability, μ0 is the crude oil viscosity, Δy is the grid step length, and ΔP is the grid pressure difference.

[0137] An oil phase seepage velocity calculation unit is configured to calculate the oil phase seepage velocity of the target grid using the following formula:

[0138]

[0139] where v t is the oil phase seepage velocity of the target grid.

[0140] The well pattern economic evaluation device provided by the embodiments of the present application can execute the well pattern economic evaluation method provided by any of the embodiments of the present application, and has the corresponding function modules and beneficial effects of the execution method.

[0141] Embodiment Four

[0142] Figure 5 A structural schematic diagram of an electronic device 10 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular telephones, smart phones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the present application described and / or claimed in this document.

[0143] As Figure 5 shown, the electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., connected to the at least one processor 11 in communication, where the memory stores computer programs executable by the at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer programs stored in the read-only memory (ROM) 12 or loaded into the random access memory (RAM) 13 from the storage unit 18. 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.

[0144] A plurality 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 magnetic 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.

[0145] The processor 11 can be various general and / or special-purpose 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-purpose 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 performs various methods and processes described above, such as the method of evaluating well pattern economics.

[0146] In some embodiments, the method of evaluating well pattern economics can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded onto the RAM 13 and executed by the processor 11, one or more steps of the method of evaluating well pattern economics described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the method of evaluating well pattern economics by any other appropriate means, such as by means of firmware.

[0147] Various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a complex programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0148] Computer programs for implementing the methods of the present application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer program, when executed, can cause instructions defined in the flow charts and / or block diagrams to be implemented. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package, and partially on a remote machine or entirely on a remote machine or server.

[0149] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer-readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium will include one or more lines of a program of instructions in a transitory signal, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0150] To provide for interaction with a user, the systems and techniques described here can 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 a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0151] The systems and techniques described herein can be implemented in a computing system that includes a back end component, e.g., as a data server, or that includes a middleware component, e.g., an application server, or that includes a front end component, e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described herein, or any combination of such back end, middleware, or front end components. The components of the system can 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.

[0152] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can 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 large management difficulty and weak business scalability in traditional physical host and VPS service.

[0153] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the scope of the present disclosure. For example, the steps recited in the present disclosure can be executed in parallel, executed in series, or executed in different orders, as long as the desired results of the technical solutions of the present disclosure are achieved, and the present disclosure is not limited herein.

[0154] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for evaluating the economic efficiency of a well pattern, characterized by, The method comprises the following steps: calculating the oil phase seepage velocity of the target grid based on the Darcy formula; determining the target flow rate interval to which the target grid belongs according to the oil phase seepage velocity threshold and the oil phase seepage velocity; determining the economic evaluation result of the target well pattern according to the target velocity interval to which each grid belongs; wherein the oil phase seepage velocity threshold comprises a high seepage velocity threshold and a low seepage velocity threshold; determining the target flow rate interval to which the target grid belongs according to the oil phase seepage velocity threshold and the oil phase seepage velocity, comprising: if the oil phase seepage velocity is less than or equal to the low seepage velocity threshold, the target grid is located in the low flow rate zone; if the oil phase seepage velocity is greater than the low seepage velocity threshold and less than or equal to the high seepage velocity threshold, the target grid is located in the medium flow rate zone; if the oil phase seepage velocity is greater than the high seepage velocity threshold, the target grid is located in the high flow rate zone; wherein the determination process of the high seepage velocity threshold and the low seepage velocity threshold comprises: calculating the single-well oil production per unit time of the target area within a preset time period, which reflects the oil production of the wellbore under the condition of break-even; substituting the single-well oil production into the expression of the production hyperbolic decline law to obtain the new well initial oil production corresponding to the single-well oil production in the initial oil production period of the wellbore; calculating the low seepage velocity threshold according to the single-well oil production, and calculating the high seepage velocity threshold according to the new well initial oil production; wherein determining the economic evaluation result of the target well pattern according to the target velocity interval to which each grid belongs comprises: calculating the area proportion of the grids corresponding to the high flow rate zone, the medium flow rate zone and the low flow rate zone in the target well pattern; determining the economic evaluation result of the target well pattern according to the area proportion of the high flow rate zone, the medium flow rate zone and the low flow rate zone.

2. The method of claim 1, wherein, The expression of the hyperbolic decline law is as follows: calculating the low seepage velocity threshold according to the single-well oil production, and calculating the high seepage velocity threshold according to the new well initial oil production, comprising: ； Where Q0 is the initial oil production of a new well, Q lim is the single well oil production, n is the decline index; D0 is the production decline rate, and t is the production time.

3. The method of claim 1, wherein, determining the product of a preset constant, well spacing between wellbores and reservoir thickness as a target coefficient; determining the ratio of the single-well oil production to the target coefficient as the low seepage velocity threshold; determining the ratio of the new well initial oil production to the target coefficient as the high seepage velocity threshold. calculating the oil phase seepage velocity of the target grid based on the Darcy formula, comprising:

4. The method of claim 1, wherein, calculating the oil phase seepage velocity of the target grid in the x direction by using the following formula: calculating the oil phase seepage velocity of the target grid in the y direction by using the following formula: ； wherein, is the oil phase flow velocity in the x direction for the target grid, is the effective permeability of the oil phase, is the viscosity of the crude oil, is the grid step size, is the difference in grid pressure; calculating the oil phase seepage velocity of the target grid by using the following formula: ； wherein, is the oil phase flow velocity in the y direction for the target grid, is the effective permeability of the oil phase, is the viscosity of the crude oil, is the grid step size, is the difference in grid pressure; The method comprises the following steps: ； wherein, Vog is the oil phase flow velocity of the target grid.

5. A device for evaluating the economic efficiency of well networks, characterized in that, The oil phase seepage velocity calculation module is configured to calculate the oil phase seepage velocity of the target grid based on the Darcy formula; The target flow rate interval determination module is configured to determine the target flow rate interval to which the target grid belongs according to the oil phase seepage velocity threshold and the oil phase seepage velocity; The economic evaluation result determination module is configured to determine the economic evaluation result of the target well pattern according to the target velocity interval to which each grid belongs; wherein the oil phase seepage velocity threshold comprises a high seepage velocity threshold and a low seepage velocity threshold; The target flow rate interval determination module comprises: ​ The low flow rate area determination unit is configured to determine that the target well pattern is located in a low flow rate area if the oil phase seepage velocity is less than or equal to a low seepage velocity threshold value; The medium flow rate area determination unit is configured to determine that the target well pattern is located in a medium flow rate area if the oil phase seepage velocity is greater than the low seepage velocity threshold value and less than or equal to a high seepage velocity threshold value; The high flow rate area determination unit is configured to determine that the target well pattern is located in a high flow rate area if the oil phase seepage velocity is greater than the high seepage velocity threshold value; The device further comprises a threshold value determination module, specifically comprising: The single-well oil production calculation unit is configured to calculate a single-well oil production of a target area per unit time within a preset time period, the single-well oil production reflecting an oil production of a wellbore under a break-even condition; The new-well initial oil production calculation unit is configured to substitute the single-well oil production into an expression of a production hyperbolic decline law to obtain a new-well initial oil production corresponding to the single-well oil production in an initial oil production period of the wellbore; The threshold value determination unit is configured to calculate a low seepage velocity threshold value according to the single-well oil production, and calculate a high seepage velocity threshold value according to the new-well initial oil production; The economic evaluation result determination module comprises: The area proportion calculation unit is configured to calculate area proportions of the high flow rate area, the medium flow rate area and the low flow rate area in the target well pattern; The economic evaluation result determination unit is configured to determine an economic evaluation result of the target well pattern according to the area proportions of the high flow rate area, the medium flow rate area and the low flow rate area.

6. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected with the at least one processor in communication; 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 to enable the at least one processor to execute the well pattern economic evaluation method in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions, and the computer instructions are used to enable the processor to implement the well pattern economic evaluation method in any one of claims 1-4 when executed.

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