Calculation method, calculation device and equipment of oil and gas split reserves and medium

Abstract

The invention provides an oil and gas split reserve calculation method and device, equipment and a medium, and the method comprises the steps: determining a target splitting unit in a target calculation unit when an oil-bearing area boundary intersects with a division boundary; based on a plurality of initial reserve parameter contour maps corresponding to the target calculation unit, determining a plurality of target reserve parameter contour maps in the target splitting unit; calculating a crude oil geological reserve volume corresponding to the target splitting unit based on an area between each reserve parameter contour line in each target reserve parameter contour map and a numerical value corresponding to each reserve parameter contour line; and based on the crude oil geological reserve volume corresponding to the target calculation unit and the crude oil geological reserve volume corresponding to the target splitting unit, determining recoverable reserves corresponding to the target splitting unit. Through the method and the device, the calculation accuracy and the working time of reserve splitting are greatly improved, and the reserve splitting result is more reliable.

Description

Technical Field

[0001] The present application relates to the technical field of oil and gas exploration, and particularly to a method, device, equipment and medium for calculating the split reserves of oil and gas. Background Art

[0002] Oil and gas reserves are the core assets of oil companies and important indicators of their potential for healthy development. Oil companies attach great importance to reserve calculation work and invest a large amount of manpower, material and financial resources in it every year. Oil and gas reserve splitting is an important task in oil and gas reserve assessment work, and it is necessary to split and calculate the reserves of the calculation unit according to mining rights, provincial boundaries, sea areas and restricted areas. Taking the provincial boundary splitting of the calculation unit as an example, it is calculated according to the oil-bearing area of the calculation unit and the provincial boundary to obtain the overlapping area, and then the reserves of the calculation unit are split according to the ratio of the overlapping area to the oil-bearing area of the calculation unit, which is the split reserve of the calculation unit for this province.

[0003] The above reserve splitting work mainly calculates reserves according to the area splitting method at present. Although the area splitting method is simple and practical, it has an important problem: the reserve splitting method based on area assumes that the distribution of reserves on the plane is homogeneous, and this assumption is far from the actual situation. In fact, the distribution of reserves in the calculation unit on the plane is inhomogeneous and is affected by the planar distribution of the reservoir, physical properties and oil-bearing properties. Therefore, how to improve the accuracy of split reserve calculation has become a technical problem that cannot be underestimated. Summary of the Invention

[0004] In view of this, the purpose of the present application is to provide a method, device, equipment and medium for calculating the split reserves of oil and gas. Through the reserve splitting based on the volume splitting method, the inhomogeneity of the reserve distribution on the plane is fully considered, and all the required basic data can be easily obtained in the actual reserve calculation, which greatly improves the calculation accuracy and working efficiency of reserve splitting, makes the reserve splitting results more reliable, and solves the problem that the inhomogeneity of the reserves of the calculation unit is not considered in the prior art at one stroke.

[0005] In the first aspect, an embodiment of the present application provides a method for calculating the split reserves of oil and gas, and the calculation method includes:

[0006] Obtain the oil-bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split;

[0007] When the oil-bearing area boundary intersects with the division boundary, perform an overlapping calculation on the oil-bearing area boundary and the division boundary to determine the target split unit within the target calculation unit;

[0008] Based on multiple initial reserve parameter isopach maps corresponding to the target calculation unit, determine multiple target reserve parameter isopach maps of the target calculation unit within the target splitting unit;

[0009] Based on the area between each reserve parameter isopach and the value corresponding to each reserve parameter isopach in each target reserve parameter isopach map, calculate the volume of the original oil geological reserve corresponding to the target splitting unit;

[0010] Based on the volume of the original oil geological reserve corresponding to the target calculation unit and the volume of the original oil geological reserve corresponding to the target splitting unit, determine the recoverable reserve corresponding to the target splitting unit.

[0011] Further, the multiple initial reserve parameter isopach maps include an initial effective thickness isopach map, an initial effective porosity isopach map, and an initial oil saturation isopach map; the determining multiple target reserve parameter isopach maps of the target calculation unit within the target splitting unit based on the multiple initial reserve parameter isopach maps corresponding to the target calculation unit includes:

[0012] Use the boundary corresponding to the target splitting unit to crop the initial effective thickness isopach map corresponding to the target calculation unit to determine the target effective thickness isopach map of the target calculation unit within the target splitting unit;

[0013] Use the boundary corresponding to the target splitting unit to crop the initial effective porosity isopach map corresponding to the target calculation unit to determine the target effective porosity isopach map of the target calculation unit within the target splitting unit;

[0014] Use the boundary corresponding to the target splitting unit to crop the initial oil saturation isopach map corresponding to the target calculation unit to determine the target oil saturation isopach map of the target calculation unit within the target splitting unit.

[0015] Further, the calculating the volume of the original oil geological reserve corresponding to the target splitting unit based on the area between each reserve parameter isopach and the value corresponding to each reserve parameter isopach in each target reserve parameter isopach map includes:

[0016] Based on the area between each effective thickness isopach in the target effective thickness isopach map and the value corresponding to each effective thickness isopach, calculate the average effective thickness corresponding to the target splitting unit;

[0017] Based on the area between each effective porosity isopach in the target effective porosity isopach map and the value corresponding to each effective porosity isopach, calculate the average effective porosity corresponding to the target splitting unit;

[0018] Based on the area between each oil saturation isoline in the target oil saturation isoline map and the value corresponding to each oil saturation isoline, the average oil saturation corresponding to the target splitting unit is calculated;

[0019] Based on the average effective thickness, the average effective porosity, the average oil saturation, the oil-bearing area corresponding to the target splitting unit, and the average formation oil volume factor corresponding to the target calculation unit, the geological reserve volume of crude oil corresponding to the target splitting unit is calculated.

[0020] Further, the recoverable reserves include technically recoverable reserves and economically recoverable reserves; determining the recoverable reserves corresponding to the target splitting unit based on the geological reserve volume of crude oil corresponding to the target calculation unit and the geological reserve volume of crude oil corresponding to the target splitting unit includes:

[0021] Taking the ratio between the geological reserve volume of crude oil corresponding to the target splitting unit and the geological reserve volume of crude oil corresponding to the target calculation unit as the oil and gas splitting coefficient;

[0022] Multiplying the technically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the technically recoverable reserves corresponding to the target splitting unit;

[0023] Multiplying the economically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the economically recoverable reserves corresponding to the target splitting unit.

[0024] In a second aspect, an embodiment of the present application further provides a calculation device for oil and gas split reserves, and the calculation device includes:

[0025] A boundary acquisition module, configured to acquire the oil-bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split;

[0026] A target splitting unit determination module, configured to perform an overlapping calculation on the oil-bearing area boundary and the division boundary when the oil-bearing area boundary intersects the division boundary, so as to determine a target splitting unit within the target calculation unit;

[0027] An isoline map determination module, configured to determine multiple target reserve parameter isoline maps within the target splitting unit of the target calculation unit based on multiple initial reserve parameter isoline maps corresponding to the target calculation unit;

[0028] The crude oil geological reserve volume calculation module is used to calculate the volume of the crude oil geological reserve corresponding to the target splitting unit based on the area between each reserve parameter contour line in each target reserve parameter contour map and the value corresponding to each reserve parameter contour line;

[0029] The recoverable reserve calculation module is used to determine the recoverable reserve corresponding to the target splitting unit based on the volume of the crude oil geological reserve corresponding to the target calculation unit and the volume of the crude oil geological reserve corresponding to the target splitting unit.

[0030] Furthermore, the multiple initial reserve parameter contour maps include an initial effective thickness contour map, an initial effective porosity contour map, and an initial oil saturation contour map; when the contour map determination module is used to determine multiple target reserve parameter contour maps of the target calculation unit within the target splitting unit based on the multiple initial reserve parameter contour maps corresponding to the target calculation unit, the contour map determination module is further used to:

[0031] Use the boundary corresponding to the target splitting unit to clip the initial effective thickness contour map corresponding to the target calculation unit to determine the target effective thickness contour map of the target calculation unit within the target splitting unit;

[0032] Use the boundary corresponding to the target splitting unit to clip the initial effective porosity contour map corresponding to the target calculation unit to determine the target effective porosity contour map of the target calculation unit within the target splitting unit;

[0033] Use the boundary corresponding to the target splitting unit to clip the initial oil saturation contour map corresponding to the target calculation unit to determine the target oil saturation contour map of the target calculation unit within the target splitting unit.

[0034] Furthermore, when the crude oil geological reserve volume calculation module is used to calculate the volume of the crude oil geological reserve corresponding to the target splitting unit based on the area between each reserve parameter contour line in each target reserve parameter contour map and the value corresponding to each reserve parameter contour line, the crude oil geological reserve volume calculation module is further used to:

[0035] Calculate the average effective thickness corresponding to the target splitting unit based on the area between each effective thickness contour line in the target effective thickness contour map and the value corresponding to each effective thickness contour line;

[0036] Calculate the average effective porosity corresponding to the target splitting unit based on the area between each effective porosity contour line in the target effective porosity contour map and the value corresponding to each effective porosity contour line;

[0037] Based on the area between each oil saturation isoline in the target oil saturation isoline map and the value corresponding to each oil saturation isoline, calculate the average oil saturation corresponding to the target splitting unit;

[0038] Based on the average effective thickness, the average effective porosity, the average oil saturation, the oil-bearing area corresponding to the target splitting unit, and the average formation oil volume factor corresponding to the target calculation unit, calculate the volume of the original oil in place corresponding to the target splitting unit.

[0039] Further, the recoverable reserves include technically recoverable reserves and economically recoverable reserves; when the recoverable reserves calculation module is used to determine the recoverable reserves corresponding to the target splitting unit based on the volume of the original oil in place corresponding to the target calculation unit and the volume of the original oil in place corresponding to the target splitting unit, the recoverable reserves calculation module is further used for:

[0040] Take the ratio between the volume of the original oil in place corresponding to the target splitting unit and the volume of the original oil in place corresponding to the target calculation unit as the oil and gas splitting coefficient;

[0041] Multiply the technically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the technically recoverable reserves corresponding to the target splitting unit;

[0042] Multiply the economically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the economically recoverable reserves corresponding to the target splitting unit.

[0043] In a third aspect, an embodiment of the present application further provides an electronic device, including: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device runs, the processor communicates with the memory through the bus. When the machine-readable instructions are executed by the processor, the steps of the above method for calculating oil and gas split reserves are executed.

[0044] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is run by a processor, the steps of the above method for calculating oil and gas split reserves are executed.

[0045] A calculation method, calculation device, equipment and medium for oil and gas split reserves provided by an embodiment of the present application. The method includes: First, obtain the oil-bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split; Then, when the oil-bearing area boundary intersects the division boundary, perform an overlapping calculation on the oil-bearing area boundary and the division boundary to determine the target split unit within the target calculation unit; Based on multiple initial reserve parameter isopach maps corresponding to the target calculation unit, determine multiple target reserve parameter isopach maps within the target split unit of the target calculation unit; Calculate the volume of the original oil geological reserve corresponding to the target split unit based on the area between each reserve parameter isopach line and the value corresponding to each reserve parameter isopach line in each target reserve parameter isopach map; Finally, determine the recoverable reserve corresponding to the target split unit based on the volume of the original oil geological reserve corresponding to the target calculation unit and the volume of the original oil geological reserve corresponding to the target split unit.

[0046] Through the reserve splitting based on the volume splitting method, the present application fully considers the heterogeneity of the reserve distribution on the plane, and all the required basic data can be easily obtained in the actual reserve calculation, greatly improving the calculation accuracy and working efficiency of the reserve splitting, making the reserve splitting result more reliable, and solving the problem that the heterogeneity of the reserve of the calculation unit is not considered in the prior art at one stroke.

[0047] To make the above objects, features and advantages of the present application more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] To more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0049] Figure 1 It is a flowchart of a calculation method for oil and gas split reserves provided by an embodiment of the present application;

[0050] FIG. 2(A) is a schematic diagram of a target calculation unit and a unit to be split provided by an embodiment of the present application;

[0051] FIG. 2(B) is a schematic diagram of a target split unit provided by an embodiment of the present application;

[0052] FIG. 2(C) is a schematic diagram of an isopach of the target effective thickness within the target split unit of the target calculation unit provided by an embodiment of the present application;

[0053] Figure 3 This is a schematic structural diagram of a calculation device for oil and gas split reserves provided by an embodiment of the present application;

[0054] Figure 4 This is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Specific embodiments

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, every other embodiment obtained by those skilled in the art without creative efforts belongs to the scope of protection of the present application.

[0056] First, the applicable application scenarios of the present application are introduced. The present application can be applied to the field of oil and gas exploration technology.

[0057] Oil and gas reserves are the core assets of oil companies and important indicator indicators of their potential for healthy development. Oil companies attach great importance to the work of reserve calculation and invest a large amount of manpower, material resources, and financial resources in it every year. Oil and gas reserve splitting is an important task in the evaluation of oil and gas reserves. It is necessary to split and calculate the reserves of the calculation unit according to mining rights, provincial boundaries, sea areas, and restricted areas. Taking the provincial boundary splitting of the calculation unit as an example, according to the oil-bearing area of the calculation unit and the provincial boundary, the overlapping area is calculated, and then the reserves of the calculation unit are split according to the proportion of the overlapping area in the oil-bearing area of the calculation unit, which is the split reserve of the calculation unit for the province.

[0058] The above reserve splitting work mainly calculates reserves according to the area splitting method at present. Although the area splitting method is simple and practical, it has an important problem: the reserve splitting method based on area assumes that the distribution of reserves on the plane is homogeneous, and this assumption is far from the actual situation. In fact, the distribution of reserves in the calculation unit on the plane is inhomogeneous and is affected by the plane distribution of the reservoir, physical properties, and oil-bearing properties. Therefore, how to improve the accuracy of split reserve calculation has become a technical problem that cannot be underestimated.

[0059] Based on this, the embodiments of the present application provide a method for calculating the split reserves of oil and gas, which greatly improves the calculation accuracy and working efficiency of reserve splitting, makes the reserve splitting results more reliable, and solves the problem that the heterogeneity of reserves in the calculation unit is not considered in the prior art at one stroke.

[0060] Please refer to Figure 1 , Figure 1 which is a flowchart of a method for calculating the split reserves of oil and gas provided by the embodiments of the present application. As Figure 1 shown in

[0061] S101, obtain the oil-bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split.

[0062] It should be noted that the target calculation unit refers to a certain oil and gas area that needs to be evaluated for oil and gas reserves. The reserves of the target calculation unit need to be split and calculated according to mining rights, provincial boundaries, sea areas, and restricted areas. Here, as an example, taking the split of the provincial boundary as an example, a certain province is used as the unit to be split. When the unit to be split is a certain province, the division boundary corresponding to the unit to be split is the provincial boundary of the province. The splitting methods for mining rights, sea areas, and restricted areas are the same and will not be elaborated here.

[0063] For the above step S101, in specific implementation, obtain the oil-bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split.

[0064] Please refer to Fig. 2(A), which is a schematic diagram of a target calculation unit and a unit to be split provided by the embodiments of the present application. As shown in Fig. 2(A), the area inside the solid line is the target calculation unit, the solid line is the oil-bearing area boundary corresponding to the target calculation unit, the area inside the dashed line is the unit to be split, and the dashed line is the division boundary corresponding to the unit to be split.

[0065] S102, when the oil-bearing area boundary intersects the division boundary, perform an overlapping calculation on the oil-bearing area boundary and the division boundary to determine the target split unit within the target calculation unit.

[0066] For the above step S102, in specific implementation, determine whether the oil-bearing area boundary intersects the division boundary. If the two do not intersect, ignore it and there is no need to perform reserve splitting. If the oil-bearing area boundary intersects the division boundary, it means that the unit to be split needs to split out the reserves of the calculation unit located within the unit to be split. For the sake of convenience of description, the target calculation unit located within the unit to be split is called the target split unit. Perform an overlapping calculation on the oil-bearing area boundary and the division boundary through traditional geometric algorithms, calculate the boundary of the target split unit, and determine the target split unit within the target calculation unit.

[0067] Please refer to FIG. 2(B). FIG. 2(B) is a schematic diagram of a target splitting unit provided by an embodiment of the present application. As shown in FIG. 2(B), since the oil-bearing area boundary of the target calculation unit intersects the division boundary of the unit to be split, it is necessary to perform an overlapping calculation on the oil-bearing area boundary and the division boundary at this time, and use the intersection area of the oil-bearing area boundary and the division boundary as the target splitting unit. The shaded area in FIG. 2(B) is the target splitting unit within the target calculation unit.

[0068] S103. Based on a variety of initial reserve parameter contour maps corresponding to the target calculation unit, determine a variety of target reserve parameter contour maps of the target calculation unit within the target splitting unit.

[0069] Here, the initial reserve parameter contour map refers to a contour map drawn based on the initial reserve contour lines within the target calculation unit.

[0070] For the above-mentioned step S103, in specific implementation, use a variety of initial reserve parameter contour maps corresponding to the target calculation unit to determine a variety of target reserve parameter contour maps of the target calculation unit within the target splitting unit.

[0071] Specifically, according to the embodiments provided by the present application, the reserve parameters include effective thickness, effective porosity, and oil saturation. The variety of initial reserve parameter contour maps include an initial effective thickness contour map, an initial effective porosity contour map, and an initial oil saturation contour map. These maps are all intermediate result maps used in the unit reserve calculation process. These contour lines integrate the knowledge of geologists and well describe the heterogeneity of effective thickness, effective porosity, and oil saturation in the plane.

[0072] Further, for the above-mentioned step S103, the determining a variety of target reserve parameter contour maps of the target calculation unit within the target splitting unit based on a variety of initial reserve parameter contour maps corresponding to the target calculation unit includes:

[0073] Step 1031. Use the boundary corresponding to the target splitting unit to crop the initial effective thickness contour map corresponding to the target calculation unit to determine the target effective thickness contour map of the target calculation unit within the target splitting unit.

[0074] For the above-mentioned step 1031, in specific implementation, input the initial effective thickness contour map corresponding to the target calculation unit, and use the boundary corresponding to the target splitting unit to crop the initial effective thickness contour map to determine the target effective thickness contour map of the target calculation unit within the target splitting unit.

[0075] Please refer to FIG. 2(C). FIG. 2(C) is a schematic diagram of the target effective thickness contour lines of a target calculation unit within a target splitting unit provided by an embodiment of the present application. As shown in FIG. 2(C), the initial effective thickness contour line diagram corresponding to the target calculation unit is the solid line area in FIG. 2(C), and the dashed line within the solid line area is the boundary corresponding to the target splitting unit. The initial effective thickness contour line diagram is cropped using the boundary corresponding to the target splitting unit, and the shaded area in FIG. 2(C) is the target effective thickness contour line diagram of the target calculation unit within the target splitting unit.

[0076] Step 1032: Crop the initial effective porosity contour line diagram corresponding to the target calculation unit using the boundary corresponding to the target splitting unit to determine the target effective porosity contour line diagram of the target calculation unit within the target splitting unit.

[0077] Regarding the above step 1032, in specific implementation, input the initial effective porosity contour line diagram corresponding to the target calculation unit, and crop the initial effective porosity contour line diagram using the boundary corresponding to the target splitting unit to determine the target effective porosity contour line diagram of the target calculation unit within the target splitting unit.

[0078] Step 1033: Crop the initial oil saturation contour line diagram corresponding to the target calculation unit using the boundary corresponding to the target splitting unit to determine the target oil saturation contour line diagram of the target calculation unit within the target splitting unit.

[0079] Regarding the above step 1033, in specific implementation, input the initial oil saturation contour line diagram corresponding to the target calculation unit, and crop the initial oil saturation contour line diagram using the boundary corresponding to the target splitting unit to determine the target oil saturation contour line diagram of the target calculation unit within the target splitting unit.

[0080] S104: Calculate the volume of the original oil geological reserves corresponding to the target splitting unit based on the area between each reserve parameter contour line and the value corresponding to each reserve parameter contour line in each target reserve parameter contour line diagram.

[0081] Regarding the above step S104, in specific implementation, obtain the area between each reserve parameter contour line and the value corresponding to each reserve parameter contour line in each target reserve parameter contour line diagram, and calculate the volume of the original oil geological reserves corresponding to the target splitting unit using the area between each reserve parameter contour line and the value corresponding to each reserve parameter contour line in each target reserve parameter contour line diagram.

[0082] As an alternative embodiment, for the above step S104, calculating the volume of the original geological reserves corresponding to the target splitting unit based on the area between each reserve parameter contour line in each target reserve parameter contour map and the value corresponding to each reserve parameter contour line includes:

[0083] Step 1041, calculating the average effective thickness corresponding to the target splitting unit based on the area between each effective thickness contour line in the target effective thickness contour map and the value corresponding to each effective thickness contour line.

[0084] For the above step 1041, in specific implementation, for the target effective thickness contour map, first obtain the area between each effective thickness contour line in the target effective thickness contour map and the value corresponding to each effective thickness contour line. Then, using the area between each effective thickness contour line and the value corresponding to each effective thickness contour line, the average effective thickness corresponding to the target splitting unit can be calculated. Specifically, the calculation method of the area between contour lines in the contour map is described in detail in the prior art and will not be elaborated here. Specifically, the average effective thickness corresponding to the target splitting unit is calculated using the following formula:

[0085]

[0086] where H represents the average effective thickness corresponding to the target splitting unit. Assume that there are n effective thickness contour lines in the target effective thickness contour map, and the values corresponding to each effective thickness contour line are V1, V2,..., V n , the area between the V1 and V2 contour lines is a1, the area between the V2 and V3 contour lines is a2, and so on.

[0087] Step 1042, calculating the average effective porosity corresponding to the target splitting unit based on the area between each effective porosity contour line in the target effective porosity contour map and the value corresponding to each effective porosity contour line.

[0088] For the above step 1042, in specific implementation, for the target effective porosity contour map, first obtain the area between each effective porosity contour line in the target effective porosity contour map and the value corresponding to each effective porosity contour line. Then, using the area between each effective porosity contour line and the value corresponding to each effective porosity contour line, the average effective porosity corresponding to the target splitting unit can be calculated. Specifically, the average effective porosity The calculation formula of can refer to the calculation formula of the average effective thickness H in the above embodiment and will not be elaborated here.

[0089] Step 1043: Calculate the average oil saturation corresponding to the target splitting unit based on the area between each oil saturation isoline in the target oil saturation isoline map and the value corresponding to each oil saturation isoline.

[0090] For the above Step 1043, in specific implementation, for the target oil saturation isoline map, first obtain the area between each oil saturation isoline in the target oil saturation isoline map and the value corresponding to each oil saturation isoline. Then, using the area between each oil saturation isoline and the value corresponding to each oil saturation isoline, the average oil saturation S corresponding to the target splitting unit can be calculated. oi . Specifically, the average oil saturation S oi The calculation formula can refer to the calculation formula of the average effective thickness H in the above embodiment and will not be elaborated here.

[0091] In this way, according to the above Steps 1041 - 1043, carry out the calculation of the corresponding reserve parameters of the splitting unit according to the calculation methods of the effective thickness, effective porosity and oil saturation of the calculation unit. In the reserve splitting stage, directly select the isoline area weighing method to calculate the reserve parameters, realizing the fully automated calculation of the reserve parameters based on the isoline area weighing method. Compared with the arithmetic mean and the well point area weighing method, its calculation result is more reliable, can better describe the planar change trend of the reserve parameters, and better reflect the planar heterogeneity of the reserve parameters.

[0092] Step 1044: Calculate the volume of the original oil in place corresponding to the target splitting unit based on the average effective thickness, the average effective porosity, the average oil saturation, the oil-bearing area corresponding to the target splitting unit, and the average formation volume factor of the original oil corresponding to the target calculation unit.

[0093] For the above Step 1044, in specific implementation, after calculating the average effective thickness, average effective porosity and average oil saturation corresponding to the target splitting unit, using the average effective thickness, average effective porosity, average oil saturation, the oil-bearing area corresponding to the target splitting unit, and the average formation volume factor of the original oil corresponding to the target calculation unit, the volume of the original oil in place corresponding to the target splitting unit can be calculated. Specifically, according to the volume method, the volume of the original oil in place corresponding to the target splitting unit is calculated through the following formula:

[0094]

[0095] Among them, N represents the volume of the original oil in place corresponding to the target splitting unit, with the unit of 10 4 m 3 ; A represents the oil-bearing area corresponding to the target splitting unit, with the unit of km2 ; the unit of the average effective thickness H is m; the average effective porosity is in %; the average oil saturation S oi is in %; B oi is the average formation oil volume factor corresponding to the target calculation unit. For B oi The volume factor of the oil has weak heterogeneity within a calculation unit and the relevant parameters of the calculation unit can be directly applied.

[0096] S105, determining the recoverable reserves corresponding to the target splitting unit based on the volume of the original oil geological reserves corresponding to the target calculation unit and the volume of the original oil geological reserves corresponding to the target splitting unit.

[0097] Regarding the above step S105, in specific implementation, after calculating the volume of the original oil geological reserves corresponding to the target splitting unit, the recoverable reserves corresponding to the target splitting unit are determined according to the volume of the original oil geological reserves corresponding to the target calculation unit and the volume of the original oil geological reserves corresponding to the target splitting unit. In this way, the method based on volume splitting in this application can fully consider the heterogeneity of the reserve distribution on the plane, greatly improving the calculation accuracy of reserve splitting and making the reserve splitting results more reliable.

[0098] Specifically, according to the embodiments provided in this application, the recoverable reserves include technically recoverable reserves and economically recoverable reserves.

[0099] Further, regarding the above step S105, the determining the recoverable reserves corresponding to the target splitting unit based on the volume of the original oil geological reserves corresponding to the target calculation unit and the volume of the original oil geological reserves corresponding to the target splitting unit includes:

[0100] Step 1051, taking the ratio between the volume of the original oil geological reserves corresponding to the target splitting unit and the volume of the original oil geological reserves corresponding to the target calculation unit as the oil and gas splitting coefficient.

[0101] Regarding the above step 1051, in specific implementation, the volume of the original oil geological reserves corresponding to the target splitting unit is divided by the volume of the original oil geological reserves corresponding to the target calculation unit to determine the oil and gas splitting coefficient.

[0102] Step 1052, multiplying the technically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the technically recoverable reserves corresponding to the target splitting unit.

[0103] Step 1053, multiplying the economically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the economically recoverable reserves corresponding to the target splitting unit.

[0104] For the above steps 1052 - 1053, in specific implementation, multiply the technically recoverable reserves corresponding to the target calculation unit by the oil - gas splitting coefficient obtained in step 1051 to determine the technically recoverable reserves corresponding to the target splitting unit. Multiply the economically recoverable reserves corresponding to the target calculation unit by the oil - gas splitting coefficient obtained in step 1051 to determine the economically recoverable reserves corresponding to the target splitting unit. In this way, for the splitting of technically recoverable reserves and economically recoverable reserves in this application, the proportion of geological reserves based on the above - mentioned volume splitting can be used as the splitting coefficient to directly calculate the technically recoverable reserves and economically recoverable reserves of the splitting unit, thus completing the splitting of the entire reserves based on the volume method.

[0105] The calculation method for splitting oil - gas reserves provided by the embodiment of this application is as follows: First, obtain the oil - bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split; then, when the oil - bearing area boundary intersects the division boundary, perform an overlapping calculation on the oil - bearing area boundary and the division boundary to determine the target splitting unit within the target calculation unit; based on various initial reserve parameter contour maps corresponding to the target calculation unit, determine various target reserve parameter contour maps of the target calculation unit within the target splitting unit; calculate the volume of the original oil geological reserves corresponding to the target splitting unit based on the area between each reserve parameter contour line and the value corresponding to each reserve parameter contour line in each target reserve parameter contour map; finally, determine the recoverable reserves corresponding to the target splitting unit based on the volume of the original oil geological reserves corresponding to the target calculation unit and the volume of the original oil geological reserves corresponding to the target splitting unit.

[0106] Through the reserve splitting based on the volume splitting method, this application fully considers the heterogeneity of the reserve distribution in the plane, and all the required basic data can be easily obtained in the actual reserve calculation, greatly improving the calculation accuracy and working efficiency of reserve splitting, making the reserve splitting results more reliable, and solving the problem that the heterogeneity of the reserve in the calculation unit is not considered in the prior art at one stroke.

[0107] Please refer to Figure 3 , Figure 3 which is the structural schematic diagram of a calculation device for splitting oil - gas reserves provided by the embodiment of this application. As Figure 3 shown in

[0108] The boundary acquisition module 301 is used to obtain the oil - bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split;

[0109] The target splitting unit determination module 302 is configured to, when the oil-bearing area boundary intersects with the division boundary, perform an overlapping calculation on the oil-bearing area boundary and the division boundary to determine the target splitting unit within the target calculation unit;

[0110] The isogram determination module 303 is configured to determine multiple target reserve parameter isograms within the target splitting unit of the target calculation unit based on multiple initial reserve parameter isograms corresponding to the target calculation unit;

[0111] The original oil in place volume calculation module 304 is configured to calculate the original oil in place volume corresponding to the target splitting unit based on the area between each reserve parameter isogram and the value corresponding to each reserve parameter isogram in each target reserve parameter isogram;

[0112] The recoverable reserve calculation module 305 is configured to determine the recoverable reserve corresponding to the target splitting unit based on the original oil in place volume corresponding to the target calculation unit and the original oil in place volume corresponding to the target splitting unit.

[0113] Further, the multiple initial reserve parameter isograms include an initial effective thickness isogram, an initial effective porosity isogram, and an initial oil saturation isogram; when the isogram determination module 303 is configured to determine multiple target reserve parameter isograms within the target splitting unit of the target calculation unit based on the multiple initial reserve parameter isograms corresponding to the target calculation unit, the isogram determination module 303 is further configured to:

[0114] Use the boundary corresponding to the target splitting unit to clip the initial effective thickness isogram corresponding to the target calculation unit to determine the target effective thickness isogram within the target splitting unit of the target calculation unit;

[0115] Use the boundary corresponding to the target splitting unit to clip the initial effective porosity isogram corresponding to the target calculation unit to determine the target effective porosity isogram within the target splitting unit of the target calculation unit;

[0116] Use the boundary corresponding to the target splitting unit to clip the initial oil saturation isogram corresponding to the target calculation unit to determine the target oil saturation isogram within the target splitting unit of the target calculation unit.

[0117] Further, when the crude oil geological reserve volume calculation module 304 is used to calculate the crude oil geological reserve volume corresponding to the target splitting unit based on the area between each reserve parameter contour line in each target reserve parameter contour map and the value corresponding to each reserve parameter contour line, the crude oil geological reserve volume calculation module 304 is further used for:

[0118] Calculating the average effective thickness corresponding to the target splitting unit based on the area between each effective thickness contour line in the target effective thickness contour map and the value corresponding to each effective thickness contour line;

[0119] Calculating the average effective porosity corresponding to the target splitting unit based on the area between each effective porosity contour line in the target effective porosity contour map and the value corresponding to each effective porosity contour line;

[0120] Calculating the average oil saturation corresponding to the target splitting unit based on the area between each oil saturation contour line in the target oil saturation contour map and the value corresponding to each oil saturation contour line;

[0121] Calculating the crude oil geological reserve volume corresponding to the target splitting unit based on the average effective thickness, the average effective porosity, the average oil saturation, the oil-bearing area corresponding to the target splitting unit, and the average formation crude oil volume factor corresponding to the target calculation unit.

[0122] Further, the recoverable reserves include technically recoverable reserves and economically recoverable reserves; when the recoverable reserve calculation module 305 is used to determine the recoverable reserves corresponding to the target splitting unit based on the crude oil geological reserve volume corresponding to the target calculation unit and the crude oil geological reserve volume corresponding to the target splitting unit, the recoverable reserve calculation module 305 is further used for:

[0123] Taking the ratio between the crude oil geological reserve volume corresponding to the target splitting unit and the crude oil geological reserve volume corresponding to the target calculation unit as the oil and gas splitting coefficient;

[0124] Multiplying the technically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the technically recoverable reserves corresponding to the target splitting unit;

[0125] Multiplying the economically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the economically recoverable reserves corresponding to the target splitting unit.

[0126] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As Figure 4As shown in the figure, the electronic device 400 includes a processor 410, a memory 420, and a bus 430.

[0127] The memory 420 stores machine-readable instructions executable by the processor 410. When the electronic device 400 runs, the processor 410 communicates with the memory 420 through the bus 430. When the machine-readable instructions are executed by the processor 410, the steps of the calculation method for the oil and gas split reserves in the method embodiment as described above can be executed. For the specific implementation manner, reference can be made to the method embodiment, which will not be elaborated here. Figure 1 As shown in the figure, the steps of the calculation method for the oil and gas split reserves in the method embodiment as described above can be executed. For the specific implementation manner, reference can be made to the method embodiment, which will not be elaborated here.

[0128] The embodiment of the present application also provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is run by a processor, the steps of the calculation method for the oil and gas split reserves in the method embodiment as described above can be executed. For the specific implementation manner, reference can be made to the method embodiment, which will not be elaborated here. Figure 1 As shown in the figure, the steps of the calculation method for the oil and gas split reserves in the method embodiment as described above can be executed. For the specific implementation manner, reference can be made to the method embodiment, which will not be elaborated here.

[0129] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be elaborated here.

[0130] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some communication interfaces. The indirect coupling or communication connection of the devices or units can be in an electrical, mechanical, or other form.

[0131] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0132] In addition, in each embodiment of the present application, the functional units can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0133] When the above-mentioned functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium executable by a processor. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The foregoing storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs.

[0134] Finally, it should be noted that the above-mentioned embodiments are only specific implementation manners of this application, used to illustrate the technical solutions of this application, rather than limiting them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed in this application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes, or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A calculation method for split oil and gas reserves, characterized in that, The calculation method includes: Obtaining the oil-bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split; When the oil-bearing area boundary intersects with the division boundary, overlapping calculation is performed on the oil-bearing area boundary and the division boundary to determine the target split unit within the target calculation unit; Based on multiple initial reserve parameter contour maps corresponding to the target calculation unit, determining multiple target reserve parameter contour maps of the target calculation unit within the target split unit; Calculating the volume of the original oil in place corresponding to the target split unit based on the area between each reserve parameter contour line and the value corresponding to each reserve parameter contour line in each target reserve parameter contour map; Determining the recoverable reserves corresponding to the target split unit based on the volume of the original oil in place corresponding to the target calculation unit and the volume of the original oil in place corresponding to the target split unit; 2. The calculation method according to claim 1, characterized in that, The multiple initial reserve parameter contour maps include an initial effective thickness contour map, an initial effective porosity contour map, and an initial oil saturation contour map; the determining multiple target reserve parameter contour maps of the target calculation unit within the target split unit based on the multiple initial reserve parameter contour maps corresponding to the target calculation unit includes: Using the boundary corresponding to the target split unit to clip the initial effective thickness contour map corresponding to the target calculation unit to determine the target effective thickness contour map of the target calculation unit within the target split unit; Using the boundary corresponding to the target split unit to clip the initial effective porosity contour map corresponding to the target calculation unit to determine the target effective porosity contour map of the target calculation unit within the target split unit; Using the boundary corresponding to the target split unit to clip the initial oil saturation contour map corresponding to the target calculation unit to determine the target oil saturation contour map of the target calculation unit within the target split unit.

3. The calculation method according to claim 2, characterized in that, The calculating the volume of the original oil in place corresponding to the target split unit based on the area between each reserve parameter contour line and the value corresponding to each reserve parameter contour line in each target reserve parameter contour map includes: Calculating the average effective thickness corresponding to the target split unit based on the area between each effective thickness contour line and the value corresponding to each effective thickness contour line in the target effective thickness contour map; Calculating the average effective porosity corresponding to the target split unit based on the area between each effective porosity contour line and the value corresponding to each effective porosity contour line in the target effective porosity contour map; Calculating the average oil saturation corresponding to the target split unit based on the area between each oil saturation contour line and the value corresponding to each oil saturation contour line in the target oil saturation contour map. Calculate the volume of the original oil in place corresponding to the target splitting unit based on the average effective thickness, the average effective porosity, the average oil saturation, the oil-bearing area corresponding to the target splitting unit, and the average formation volume factor of the original oil corresponding to the target calculation unit.

4. The calculation method according to claim 1, characterized in that, The recoverable reserves include technically recoverable reserves and economically recoverable reserves; determining the recoverable reserves corresponding to the target splitting unit based on the volume of the original oil in place corresponding to the target calculation unit and the volume of the original oil in place corresponding to the target splitting unit includes: Taking the ratio between the volume of the original oil in place corresponding to the target splitting unit and the volume of the original oil in place corresponding to the target calculation unit as the oil and gas splitting coefficient; Multiplying the technically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the technically recoverable reserves corresponding to the target splitting unit; Multiplying the economically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the economically recoverable reserves corresponding to the target splitting unit.

5. A calculation device for split oil and gas reserves, characterized in that, The calculation device includes: A boundary acquisition module, configured to acquire the oil-bearing area boundary corresponding to the target calculation unit and the division boundary corresponding to the unit to be split; A target splitting unit determination module, configured to perform an overlapping calculation on the oil-bearing area boundary and the division boundary when the oil-bearing area boundary intersects with the division boundary, so as to determine the target splitting unit within the target calculation unit; An isogram determination module, configured to determine multiple target reserve parameter isograms of the target calculation unit within the target splitting unit based on multiple initial reserve parameter isograms corresponding to the target calculation unit; An original oil in place volume calculation module, configured to calculate the volume of the original oil in place corresponding to the target splitting unit based on the area between each reserve parameter isogram and the value corresponding to each reserve parameter isogram in each target reserve parameter isogram; A recoverable reserves calculation module, configured to determine the recoverable reserves corresponding to the target splitting unit based on the volume of the original oil in place corresponding to the target calculation unit and the volume of the original oil in place corresponding to the target splitting unit.

6. The calculation device according to claim 5, characterized in that, The multiple initial reserve parameter isograms include an initial effective thickness isogram, an initial effective porosity isogram, and an initial oil saturation isogram; when the isogram determination module is configured to determine multiple target reserve parameter isograms of the target calculation unit within the target splitting unit based on the multiple initial reserve parameter isograms corresponding to the target calculation unit, the isogram determination module is further configured to: Use the boundary corresponding to the target splitting unit to clip the initial effective thickness isogram corresponding to the target calculation unit to determine the target effective thickness isogram of the target calculation unit within the target splitting unit; Use the boundary corresponding to the target splitting unit to clip the initial effective porosity isogram corresponding to the target calculation unit to determine the target effective porosity isogram of the target calculation unit within the target splitting unit; Use the boundary corresponding to the target splitting unit to clip the initial oil saturation contour map corresponding to the target calculation unit, so as to determine the target oil saturation contour map of the target calculation unit within the target splitting unit.

7. The calculation device according to claim 6, characterized in that, When the original oil geological reserve volume calculation module is used to calculate the original oil geological reserve volume corresponding to the target splitting unit based on the area between each reserve parameter contour line in each target reserve parameter contour map and the value corresponding to each reserve parameter contour line, the original oil geological reserve volume calculation module is further used for: Calculate the average effective thickness corresponding to the target splitting unit based on the area between each effective thickness contour line in the target effective thickness contour map and the value corresponding to each effective thickness contour line; Calculate the average effective porosity corresponding to the target splitting unit based on the area between each effective porosity contour line in the target effective porosity contour map and the value corresponding to each effective porosity contour line; Calculate the average oil saturation corresponding to the target splitting unit based on the area between each oil saturation contour line in the target oil saturation contour map and the value corresponding to each oil saturation contour line; Calculate the original oil geological reserve volume corresponding to the target splitting unit based on the average effective thickness, the average effective porosity, the average oil saturation, the oil-bearing area corresponding to the target splitting unit, and the average formation oil volume factor corresponding to the target calculation unit.

8. The computing device according to claim 5, wherein, The recoverable reserves include technically recoverable reserves and economically recoverable reserves; when the recoverable reserve calculation module is used to determine the recoverable reserves corresponding to the target splitting unit based on the original oil geological reserve volume corresponding to the target calculation unit and the original oil geological reserve volume corresponding to the target splitting unit, the recoverable reserve calculation module is further used for: Take the ratio between the original oil geological reserve volume corresponding to the target splitting unit and the original oil geological reserve volume corresponding to the target calculation unit as the oil and gas splitting coefficient; Multiply the technically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the technically recoverable reserves corresponding to the target splitting unit; Multiply the economically recoverable reserves corresponding to the target calculation unit by the oil and gas splitting coefficient to determine the economically recoverable reserves corresponding to the target splitting unit.

9. An electronic device, wherein, Including: A processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device runs, the processor communicates with the memory through the bus. When the machine-readable instructions are run by the processor, the steps of the calculation method for oil and gas splitting reserves as described in any one of claims 1 to 4 are executed.

10. A computer-readable storage medium, wherein, A computer program is stored on the computer-readable storage medium. When the computer program is run by the processor, the steps of the calculation method for oil and gas splitting reserves as described in any one of claims 1 to 4 are executed.

Images