Comprehensive determination method for annual crude oil yield configuration of oil field

Abstract

The invention provides a comprehensive determination method for annual crude oil yield configuration of an oil field, which comprises the following steps: determining the crude oil yield of a first type of oil well which is a new oil well in a preset year; determining the crude oil yield of a second-type oil well, wherein the second-type oil well is an old oil well after the first-type oil well decreases progressively for a preset year; determining the crude oil yield of the third-class oil well; and determining the total yield of the annual crude oil configuration of the oil field according to the crude oil yield of the first-class oil well, the crude oil yield of the second-class oil well and the crude oil yield of the third-class oil well.

Description

Technical Field

[0001] The present invention relates to the field of annual crude oil production configuration, and in particular to a comprehensive determination method for annual crude oil production configuration of an oil field. Background Art

[0002] At present, all oil fields pay attention to scientific development and sustainable development, and carry out scientific production allocation from a global perspective to improve the scientificity and effectiveness of decision-making. The address types of oil fields are diverse, the development blocks are fragmented, and the underground mining situation is complex. How to scientifically plan the annual output of crude oil in each oil field to achieve sustainable development has become a technical problem that needs to be solved urgently.

[0003] There are many factors affecting oilfield production allocation, which are complex and involve a wide range of areas. This work directly affects the allocation of manpower, material and financial resources. The current annual output allocation of oilfields or oil and gas production is simply based on the output structure. It does not accurately predict crude oil production according to the law of oilfield development, and does not consider the natural decline of new oil wells that become old oil wells in the next year. As a result, the annual output planned by the oilfield and the actual annual output are quite different. Therefore, how to design a comprehensive determination method for the annual crude oil output allocation of oilfields that meets the current operation has become the key. Summary of the invention

[0004] The present invention provides a comprehensive determination method for annual crude oil production configuration of an oil field, which can scientifically and accurately configure the production of crude oil in the oil field.

[0005] In view of this, the present invention proposes a comprehensive determination method for the annual crude oil production configuration of an oil field, including: determining the crude oil production allocation of a first category of oil wells, the first category of oil wells being new oil wells between preset years; determining the crude oil production allocation of a second category of oil wells, the second category of oil wells being old oil wells after a preset year of decrease of the first category of oil wells; determining the crude oil production allocation of a third category of oil wells; and determining the total production of the annual crude oil configuration of the oil field based on the crude oil production allocation of the first category of oil wells, the crude oil production allocation of the second category of oil wells, and the crude oil production allocation of the third category of oil wells.

[0006] In some optional embodiments, the step of determining the crude oil production allocation of the first category of oil wells includes determining the number of years of preset years; determining the crude oil production allocation of the first category of oil wells in each year between the preset years; and calculating the crude oil production allocation of the first category of oil wells based on the number of years of preset years and the crude oil production allocation of the first category of oil wells in each year between the preset years.

[0007] In some optional embodiments, the step of calculating the crude oil production allocation of the first type of oil wells is:

[0008]

[0009] Q第一类油井 Assign the production of crude oil to the first type of oil well; Q i It is the allocated crude oil production of the first category oil wells in each year between the preset years, i is the number of the preset years, i is 1, 2, 3...n.

[0010] In some optional embodiments, Q i The calculation method is, Q 1＝ Newly built capacity* contribution rate in the target year; Q i+1 =Q i *The decline rate of the first category of oil wells in year i+1.

[0011] In some optional embodiments, the contribution rate is the ratio of the actual annual oil production of the first category of oil wells to the target production capacity in the target year.

[0012] In some optional embodiments, determining the crude oil production allocation of the second category oil wells includes determining the actual production of the second category oil wells in the target year; confirming the natural decay rate of the second category oil wells; and calculating the crude oil production allocation of the second category oil wells based on the actual production of the second category oil wells in the target year and the natural decay rate of the second category oil wells.

[0013] In some optional embodiments, the formula for calculating the crude oil production allocation of the second type of oil wells is:

[0014] Q 第二类油井原油配置产量 =Q 第二类油井实际产量 ×D 自然衰减率 .

[0015] In some optional embodiments, D 自然衰减率 The calculation method is the ratio of the annual oil production of the second category oil wells in the target year to the annual oil production in the year before the target year.

[0016] In some optional embodiments, the step of determining the crude oil production allocation of the third category oil wells includes determining the average annual oil increase of each third category oil well; determining the efficiency of the third category oil wells; determining the number of third category oil wells; and calculating the crude oil production allocation of the third category oil wells based on the annual oil increase of each third category oil well, the efficiency of the third category oil wells and the number of the third category oil wells.

[0017] In some optional embodiments, the formula for calculating the crude oil production allocation of the third type of oil well is:

[0018] Q 第三类油井 =q 平均 ×η×n;Q 第一类油井 The crude oil output of the third type of oil well, q 平均 The average annual oil production of a single well of the third category oil wells, η is the efficiency of the third category oil wells, and n is the number of the third category oil wells.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The present invention provides a comprehensive determination method for the annual crude oil production configuration of an oil field. The configuration scheme can accurately and scientifically configure the production of crude oil in the oil field and realize the sustainable development of the oil field. The method comprises determining the crude oil production allocation of a first category of oil wells, the first category of oil wells being new oil wells between preset years; determining the crude oil production allocation of a second category of oil wells, the second category of oil wells being old oil wells after the first category of oil wells have decreased by a preset year; determining the crude oil production allocation of a third category of oil wells; and determining the total production of the annual crude oil configuration of the oil field according to the crude oil production allocation of the first category of oil wells, the crude oil production allocation of the second category of oil wells and the crude oil production allocation of the third category of oil wells. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 A schematic flow chart of a comprehensive method for determining annual crude oil production configuration of an oil field provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a first type of oil well production decline analysis provided by an embodiment of the present invention;

[0024] Figure 3 An efficiency statistical diagram of the third type of oil wells provided by an embodiment of the present invention;

[0025] Figure 4 A statistical chart of annual oil production increase of the third type of oil wells provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0028] The present invention relates to the field of annual crude oil production configuration, and in particular to a comprehensive determination method for annual crude oil production configuration of an oil field.

[0029] At present, all oil fields pay attention to scientific development and sustainable development, and carry out scientific production allocation from a global perspective to improve the scientificity and effectiveness of decision-making. The address types of oil fields are diverse, the development blocks are fragmented, and the underground mining situation is complex. How to scientifically plan the annual output of crude oil in each oil field to achieve sustainable development has become a technical problem that needs to be solved urgently.

[0030] There are many factors affecting oilfield production allocation, which are complex and involve a wide range of areas. This work directly affects the allocation of manpower, material and financial resources. The current annual output allocation of oilfields or oil and gas production is simply based on the output structure. It does not accurately predict crude oil production according to the law of oilfield development, and does not consider the natural decline of new oil wells that become old oil wells in the next year. As a result, the annual output planned by the oilfield and the actual annual output are quite different. Therefore, how to design a comprehensive determination method for the annual crude oil output allocation of oilfields that meets the current operation has become the key.

[0031] The present invention provides a comprehensive determination method for annual crude oil production configuration of an oil field, which can scientifically and accurately configure the production of crude oil in the oil field and achieve sustainable development.

[0032] The present invention provides a comprehensive determination method for the annual crude oil production configuration of an oil field, comprising: determining the crude oil production allocation of a first category of oil wells, the first category of oil wells being new oil wells between preset years; determining the crude oil production allocation of a second category of oil wells, the second category of oil wells being old oil wells after the first category of oil wells have decreased by a preset year; determining the crude oil production allocation of a third category of oil wells; and determining the total production of the annual crude oil configuration of the oil field based on the crude oil production allocations of the first category of oil wells, the second category of oil wells and the third category of oil wells.

[0033] Specifically, the first type of oil wells are new oil wells that are operated between preset years, the second type of oil wells are old oil wells that are left after removing the new oil wells that are operated between preset years, and the third type of oil wells are measure oil wells. The comprehensive determination method for the annual crude oil production configuration of the oil field provided by the present invention comprehensively considers the law of oil field development, the law of natural decline of old oil well production, the gap between the large decline of new oil wells and the natural decline of old oil wells, scientifically configures the crude oil production of the oil field, makes overall arrangements, scientifically plans, and accurately evaluates to achieve sustainable development of the oil field.

[0034] In some optional embodiments, the step of determining the crude oil production allocation of the first category of oil wells includes determining the number of years of preset years; determining the crude oil production allocation of the first category of oil wells in each year between the preset years; and calculating the crude oil production allocation of the first category of oil wells based on the number of years of the preset years and the crude oil production allocation of the first category of oil wells in each year between the preset years.

[0035] In some optional embodiments, the steps of calculating the crude oil production allocation of the first type of oil wells are:

[0036]

[0037] Q first-class oil wells are the allocated crude oil production of first-class oil wells; Qi is the allocated crude oil production of first-class oil wells in each year between the preset years, i is the number of preset years, i is 1, 2, 3...n.

[0038] For example, an oil field will produce 5 million tons of oil in 2022, with new annual production capacity of 700,000 tons, new oil wells producing 359,200 tons, a contribution rate of 51.31%, and a measured production of 250,000 tons. In December 2022, the monthly production of new oil wells was 43,748 tons. The production of new oil wells in 2021 was 450,000 tons in 2022, the production of new oil wells in 2020 was 380,000 tons in 2022, and the production of new oil wells in 2019 was 340,000 tons in 2022. The natural decline is basically stable at 10% each year.

[0039] Furthermore, if Figure 1 As shown, Figure 1 The decline rate of new oil wells in the oil field is 40.97% in the first year, 23.62% in the second year, 15.74% in the third year, 12.57% in the fourth year, 10.85% in the fifth year, and 10.01% in the sixth year. Since the 10% decline in the sixth year is basically the same as that of old oil wells, we only need to consider the decline of new oil wells for five years (2019-2023), that is, i takes the value of 5.

[0040] Q 2023 =70×0.5131=359,200 (10,000 tons)

[0041] The annual decline rate in 2022 is 23.62%, which is equivalent to a monthly decline rate of 2.2208%. The output in December 2022 is 43,748 tons, which is equivalent to an annual output of 455,000 tons in 2022, namely:

[0042] Q 2022 =455,000 tons.

[0043] Q 2021 =45×(1-0.1574)=379,200 (10,000 tons)

[0044] Q 2020 =38×(1-0.1257)=332,200 (10,000 tons)

[0045] Q 2019 =34×(1-0.1085)=303,100 tons

[0046]

[0047] In some optional embodiments, Qi The calculation method is: Q1 = new capacity in the target year * contribution rate; Q i+1 =Qi*the decline rate of the first type of oil wells in the i+1th year.

[0048] For example, an oil field will produce 5 million tons of oil in 2022, with new annual production capacity of 700,000 tons, new oil wells producing 359,200 tons, a contribution rate of 51.31%, and a measured production of 250,000 tons. In December 2022, the monthly production of new oil wells was 43,748 tons. The production of new oil wells in 2021 was 450,000 tons in 2022, the production of new oil wells in 2020 was 380,000 tons in 2022, and the production of new oil wells in 2019 was 340,000 tons in 2022. The natural decline is basically stable at 10% each year.

[0049] Furthermore, if Figure 1 As shown, Figure 1 The decline rate of new oil wells in the oil field is 40.97% in the first year, 23.62% in the second year, 15.74% in the third year, 12.57% in the fourth year, 10.85% in the fifth year, and 10.01% in the sixth year. Since the 10% decline in the sixth year is basically the same as that of old oil wells, we only need to consider the decline of new oil wells for five years (2019-2023), that is, i takes the value of 5.

[0050] Q 2023 =70×0.5131=359,200 (10,000 tons)

[0051] The annual decline rate in 2022 is 23.62%, which is equivalent to a monthly decline rate of 2.2208%. The output in December 2022 is 43,748 tons, which is equivalent to an annual output of 455,000 tons in 2022, namely:

[0052] Q 2022 =455,000 tons.

[0053] Q 2021 =45×(1-0.1574)=379,200 (10,000 tons)

[0054] Q 2020 =38×(1-0.1257)=332,200 (10,000 tons)

[0055] Q 2019 =34×(1-0.1085)=303,100 tons

[0056]

[0057] In some optional embodiments, such as Figure 2 As shown in Figure 1, the contribution rate is the ratio of the actual annual oil production of the first category of oil wells in the target year to the target production capacity.

[0058] For example, an oil field will produce 5 million tons of oil in 2022, with new annual production capacity of 700,000 tons, new oil wells producing 359,200 tons, a contribution rate of 51.31%, and a measured production of 250,000 tons. In December 2022, the monthly production of new oil wells was 43,748 tons. The production of new oil wells in 2021 was 450,000 tons in 2022, the production of new oil wells in 2020 was 380,000 tons in 2022, and the production of new oil wells in 2019 was 340,000 tons in 2022. The natural decline is basically stable at 10% each year.

[0059] Furthermore, if Figure 3 As shown, Figure 3 The decline rate of new oil wells in the oil field is 40.97% in the first year, 23.62% in the second year, 15.74% in the third year, 12.57% in the fourth year, 10.85% in the fifth year, and 10.01% in the sixth year. Since the 10% decline in the sixth year is basically the same as that of old oil wells, we only need to consider the decline of new oil wells for five years (2019-2023), that is, i takes the value of 5.

[0060] Q 2023 =70×0.5131=359,200 (10,000 tons)

[0061] The annual decline rate in 2022 is 23.62%, which is equivalent to a monthly decline rate of 2.2208%. The output in December 2022 is 43,748 tons, which is equivalent to an annual output of 455,000 tons in 2022, namely:

[0062] Q 2022 =455,000 tons.

[0063] Q 2021 =45×(1-0.1574)=379,200 (10,000 tons)

[0064] Q 2020 =38×(1-0.1257)=332,200 (10,000 tons)

[0065] Q 2019 =34×(1-0.1085)=303,100 tons

[0066]

[0067] In some optional embodiments, determining the crude oil production allocation of the second category of oil wells includes determining the actual production of the second category of oil wells in the target year; confirming the natural decay rate of the second category of oil wells; and calculating the crude oil production allocation of the second category of oil wells based on the actual production of the second category of oil wells in the target year and the natural decay rate of the second category of oil wells.

[0068] In some optional embodiments, the formula for calculating the crude oil production allocation of the second type of oil well is: Q 第二类油井原油配置产量 =Q 第二类油井实际产量 ×D 自然衰减率 .

[0069] For example, wells before 2019 are Category II oil wells, and the annual oil production of Category II oil wells in 2022 is 3.25 million tons. 第二类油井原油配置产量 =Q 第二类油井实际产量 ×D 自然衰减率 =325×(1-10%)=2.925 million tons.

[0070] In some optional embodiments, D 自然衰减率 The calculation method is the ratio of the annual oil production of the second category oil wells in the target year to the annual oil production in the year before the target year.

[0071] In some optional embodiments, the step of determining the crude oil production allocation of the third category oil wells includes determining the average annual oil production increase of each third category oil well; determining the efficiency of the third category oil wells; determining the number of third category oil wells; and calculating the crude oil production allocation of the third category oil wells based on the annual oil production increase of each third category oil well, the efficiency of the third category oil wells and the number of third category oil wells.

[0072] In some optional embodiments, the formula for calculating the crude oil production allocation of the third type of oil well is: Q 第三类油井 =q 平均 ×η×n; Q is the crude oil output of the first category oil wells configured for the third category oil wells, q is the average annual oil production of the third category oil wells, η is the efficiency of the third category oil wells, and n is the number of third category oil wells.

[0073] Specifically, Figure 3 and Figure 4 As shown in the table, the average efficiency of the third type of oil wells from 2016 to 2022 is 0.91, and the average annual increase in oil production of the third type of oil wells is 330 tons / year. Figure 2-3 , the production allocation is 250,000 tons, and 830 wells need to be dried to basically complete the production allocation.

[0074] Q 第三类油井 =q 平均 ×η×n=330×0.91×83=249,200 tons

[0075] The production allocation for 2023 is 182.87+292.5+24.92=5.0028 million tons.

[0076] In the present invention, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0077] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0078] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A comprehensive determination method for annual crude oil production configuration of an oil field, characterized in that: include: Determine the crude oil production allocation for the first category of oil wells, which are new oil wells between the preset years; Determine the crude oil production allocation for the second category of oil wells, which are old oil wells after the first category of oil wells have declined by a preset year; Determine the crude oil production allocation for Category III oil wells; The total annual crude oil production of the oil field is determined based on the crude oil production allocated to the first category of oil wells, the crude oil production allocated to the second category of oil wells, and the crude oil production allocated to the third category of oil wells.

2. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 1, characterized in that: The step of determining the crude oil production allocation of the first type of oil wells comprises: Determine the number of years in the preset year; Determine the crude oil production allocation for the first category of oil wells in each year between the preset years; The crude oil allocation production of the first category oil wells is calculated based on the number of years in the preset years and the crude oil allocation production of the first category oil wells in each year between the preset years.

3. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 2, characterized in that: The steps of calculating the crude oil production allocation of the first type of oil wells are: Q 第一类油井 Allocate production of crude oil for the first category of wells; Q i It is the allocated crude oil production of the first category oil wells in each year between the preset years, i is the number of the preset years, i is 1, 2, 3...n.

4. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 3, characterized in that: Q i The calculation method is, Q1 = new capacity in the target year * contribution rate; Q i+1 =Q i *The decline rate of the first category of oil wells in year i+1.

5. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 4, characterized in that: The contribution rate is the ratio of the actual annual oil production of the first category of oil wells in the target year to the target production capacity.

6. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 1, characterized in that: Determining the crude oil production allocation of the second type of oil wells includes: Determine the actual production of Category II oil wells in the target year; Identify the natural decay rates of Category II wells; The crude oil allocation production of the second category oil wells is calculated based on the actual production of the second category oil wells in the target year and the natural attenuation rate of the second category oil wells.

7. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 6, characterized in that: The formula for calculating the crude oil production allocation of the second type of oil well is: Q 第二类油井原油配置产量 =Q 第二类油井实际产量 ×D 自然衰减率 。 8. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 7, characterized in that: D 自然衰减率 The calculation method is the ratio of the annual oil production of the second category oil wells in the target year to the annual oil production in the year before the target year.

9. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 8, characterized in that: The step of determining the crude oil production allocation of the third type of oil wells comprises: Determine the average annual oil production of each well for the third category of oil wells; Determine the effectiveness of Category III wells; Determine the number of Category III wells; The crude oil production allocation of the third category oil wells is calculated based on the annual oil production increase of each third category oil well, the efficiency of the third category oil wells and the number of third category oil wells.

10. The comprehensive determination method for annual crude oil production configuration of an oil field according to claim 9, characterized in that: The formula for calculating the crude oil production allocation of the third type of oil well is: Q 第三类油井 =q 平均 ×η×n; Q 第一类油井 The crude oil output of the third type of oil well, q 平均 The average annual oil production of a single well of the third category oil wells, η is the efficiency of the third category oil wells, and n is the number of the third category oil wells.

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