Mining platform optimization method and system based on tight oil horizontal well yield

Abstract

The invention provides an exploitation platform optimization method and system based on tight oil horizontal well yield, and relates to the technical field of oil exploitation. The method comprises the steps that the number of oil wells contained in all platforms of a tight oil exploitation platform, the total oil production of all the oil wells and cost data of all the oil wells are obtained; the total oil production of the platform group and the total cost of the platform group are generated; calculating the platform average benefit of the platform group and determining a first optimal platform group and a first optimal oil well number according to the platform average benefit; calculating a full-cycle production-input ratio of the platform group and determining a second optimal platform group and a second optimal oil well number; the first optimal oil well number and the second optimal oil well number are compared, and the optimal oil well number is determined; in combination with the annual increased oil production of tight oil, the annual oil production of a new oil well, the number of optimal oil wells and the number of platforms needing to be increased in a generation year, the method achieves the optimization of exploitation platforms needing yield increase, and has the advantages of being small in calculation amount, simple, practical and convenient to popularize.

Description

Technical Field

[0001] The present invention relates to the technical field of oil exploitation, and particularly to an optimization method and system for an exploitation platform based on the production of horizontal wells in tight oil fields. Background Art

[0002] A tight oil field exploitation platform refers to a set of facilities and equipment systems established for the effective exploitation of tight oil resources. The exploitation platform provides functions such as drilling, fracturing, production, monitoring, environmental protection, and safety to support the development and production of tight oil fields. Platform optimization plays an important role in adjusting the deployment and improving the efficiency of measure operations. It determines the scale of oil field production investment and the decision-making direction. For example, when production increase is needed, issues such as how many exploitation platforms to add and how many oil wells for oil production on the exploitation platform are all problems that need to be considered in platform optimization. The essence of platform optimization is a non-linear optimization problem with multiple factors and multiple constraints. If all influencing factors are considered, there are problems such as difficult modeling and excessive computation. Therefore, a simple and practical exploitation platform optimization method is particularly important. Summary of the Invention

[0003] The purpose of the present invention is to provide an optimization method and system for an exploitation platform based on the production of horizontal wells in tight oil fields to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] An optimization method for an exploitation platform based on the production of horizontal wells in tight oil fields, comprising the following steps:

[0006] S1, obtaining the number of oil wells contained in each platform of the tight oil exploitation platform, the total oil production of each oil well, and the cost data of each oil well;

[0007] S2, generating the total investment cost of the oil wells according to the cost data of the oil wells;

[0008] S3, classifying the platforms with the same number of oil wells into the same platform group, and generating the total oil production of each platform group and the total cost of the platform group according to the total oil production of the oil wells and the total investment cost of the oil wells;

[0009] S4, calculating the average platform benefit of the platform group according to the total oil production of the platform group, the total cost of the platform group, and the oil price, and determining the first optimal platform group and the first optimal number of oil wells based on the average platform benefit;

[0010] S5, calculating the full-cycle production-investment ratio of the platform group according to the total oil production of the platform group and the total cost of the platform group, and determining the second optimal platform group and the second optimal number of oil wells based on the full-cycle production-investment ratio;

[0011] S6. Compare the first optimal number of oil wells with the second optimal number of oil wells. When the first optimal number of oil wells is the same as the second optimal number of oil wells, use the first optimal number of oil wells or the second optimal number of oil wells as the optimal number of oil wells.

[0012] S7. Generate the annual required number of additional platforms based on the annual required increased oil production of tight oil, the annual oil production of new oil wells, and the optimal number of oil wells.

[0013] Furthermore, the cost data of the oil wells includes horizontal section drilling investment, logging and measurement investment, total investment in fluid volume injected into the well, well testing project investment, fracturing project investment, cluster number investment, sand addition investment, vertical well section + build-up section drilling investment, vertical well section + build-up section casing investment, platform construction sharing investment, platform surface supporting investment, and oil production cost.

[0014] Furthermore, calibrate the total oil production of the i-th oil well on the j-th platform as Q i j , and calibrate the horizontal section drilling investment of the i-th oil well on the j-th platform as T i j (1), calibrate the logging and measurement investment of the i-th oil well on the j-th platform as T i j (2), calibrate the total investment in fluid volume injected into the well of the i-th oil well on the j-th platform as T i j (3), calibrate the well testing project investment of the i-th oil well on the j-th platform as T i j (4), calibrate the fracturing project investment of the i-th oil well on the j-th platform as T i j (5), calibrate the cluster number investment of the i-th oil well on the j-th platform as T i j (6), calibrate the sand addition investment of the i-th oil well on the j-th platform as T i j (7), calibrate the vertical well section + build-up section drilling investment of the i-th oil well on the j-th platform as T i j (8), calibrate the vertical well section + build-up section casing investment of the i-th oil well on the j-th platform as T i j (9), calibrate the platform construction sharing investment of the i-th oil well on the j-th platform as T i j (10), calibrate the platform surface supporting investment of the i-th oil well on the j-th platform as T i j (11), calibrate the oil production cost of the i-th oil well on the j-th platform as T i j(12), j represents the number of different platforms, and j = 1, 2, 3, ……, n, and n represents the total number of platforms, and n ∈ N + , i represents the number of different oil wells in the same platform, and i = 1, 2, 3, ……, m j , and m j represents the total number of oil wells in the j-th platform, and m j ∈ N + ;

[0015] Calibrate the total investment cost of the i-th oil well in the j-th platform as T i j , calibrate the total oil production of the j-th platform as SQ j , calibrate the total cost of the j-th platform as ST j , calibrate the total oil production of the k-th platform group with the same number of oil wells as SQ(k), and calibrate the total cost of the k-th platform group with the same number of oil wells as ST(k), and calibrate the average benefit of the k-th platform group with the same number of oil wells as Calibrate the full-cycle production-investment ratio of the k-th platform group as R k , k represents the number of different platform groups, and k = 1, 2, 3, ……, y, and y represents the total number of different platform groups, and y ∈ N + .

[0016] Furthermore, according to the cost data of the oil wells, the specific logic for generating the total investment cost of the oil wells is as follows:

[0017] The total investment cost T of the oil well i j The calculation formula is as follows:

[0018]

[0019] Among them, represents the total drilling investment of the i-th oil well in the j-th platform, represents the ground construction sharing cost of the i-th oil well in the j-th platform, τ is a preset proportionality coefficient, and the value range of τ is 0.1 - 0.2.

[0020] Furthermore, group the platforms with the same number of oil wells into the same platform group. According to the total oil production of the oil wells and the total investment cost of the oil wells, the specific logic for generating the total oil production of each platform group and the total cost of the platform group is as follows:

[0021] S31. According to the total oil production of the oil wells and the total investment cost of the oil wells, generate the total oil production of the platform and the total cost of the platform, as follows:

[0022] Among them, the total oil production of the platform SQ jThe calculation formula is as follows:

[0023]

[0024] Among them, the total platform cost ST j The calculation formula is as follows:

[0025]

[0026] S32. Count the number of oil wells on each platform, group the platforms with the same number of oil wells into the same platform group, and generate the total oil production and total cost of each platform group based on the total oil production and total cost of the platform. Specifically as follows:

[0027] Among them, the calculation formulas for the total platform oil production SQ(k) and the total platform cost ST(k) are as follows;

[0028]

[0029] Among them, x represents the number of different platforms in the same platform group, and x = 1, 2, 3,..., n k , and n k represents the total number of platforms in the k-th platform group, and n k ∈N + , SQ(k,x) represents the total oil production of the x-th platform in the k-th platform group, and ST(k,x) represents the total cost of the x-th platform in the k-th platform group.

[0030] Furthermore, based on the total oil production, total cost, and oil price of the platform group, calculate the average benefit of the platform group, and determine the specific logic of the first optimal platform group and the first optimal number of oil wells based on the average benefit of the platform as follows:

[0031] S41. Generate the average benefit of the platform group based on the total oil production, total cost, and oil price of the platform group. Specifically as follows:

[0032] Among them, the average benefit of the platform The calculation formula is;

[0033]

[0034] Among them, p represents the oil price;

[0035] S42. After removing the platform groups with 1 and 3 platforms and the platform groups with more than 8 oil wells on a single platform, take the platform group with the maximum average benefit of the platform as the first optimal platform group, and take the number of oil wells on a single platform in the first optimal platform group as the first optimal number of oil wells.

[0036] Further, the specific logic for calculating the full-cycle production-investment ratio of the platform group based on the total oil production of the platform group and the total cost of the platform group, and determining the second-optimal platform group and the number of second-optimal oil wells is as follows:

[0037] S51. Divide the total oil production of the platform group by the total cost of the platform group to generate the full-cycle production-investment ratio of the platform group, as follows:

[0038] Among them, the full-cycle production-investment ratio R k The calculation formula is as follows:

[0039]

[0040] S52. After removing the platform groups with 1 and 3 platforms, and the platform groups with more than 8 oil wells in a single platform, take the platform group where the full-cycle production-investment ratio is the maximum as the second-optimal platform group, and take the number of oil wells in a single platform in the second-optimal platform group as the number of second-optimal oil wells.

[0041] Further, when the number of first-optimal oil wells is different from the number of second-optimal oil wells, generate the first profit-investment ratio comprehensive coefficient based on the total oil production and total cost of the platforms in the first-optimal platform group, and generate the second profit-investment ratio comprehensive coefficient based on the total oil production and total cost of the platforms in the second-optimal platform group. Compare the first profit-investment ratio comprehensive coefficient and the second profit-investment ratio comprehensive coefficient. When the first profit-investment ratio evaluation comprehensive coefficient is greater than the second profit-investment ratio comprehensive coefficient, take the number of first-optimal oil wells as the optimal number of oil wells, and when the first profit-investment ratio comprehensive coefficient is not greater than the second profit-investment ratio comprehensive coefficient, take the number of second-optimal oil wells as the optimal number of oil wells;

[0042] Among them, label the first profit-investment ratio comprehensive coefficient as LTB1, and the calculation formula of the first profit-investment ratio comprehensive coefficient LTB1 is as follows:

[0043]

[0044] Among them, label the first-optimal platform group as the k1-th platform group, and k1 ∈ (1, 2, …, y), It represents the average platform cost of the first optimal platform group. SQ(k1,max) represents the maximum total oil production of the platforms in the first optimal platform group. ST(k1,max) represents the maximum total platform cost of the platforms in the first optimal platform group. SQ(k1,min) represents the minimum total oil production of the platforms in the first optimal platform group. ST(k1,min) represents the minimum total platform cost of the platforms in the first optimal platform group. SQ(k1,zws) represents the median value of the total oil production of the platforms in the first optimal platform group. ST(k1,zws) represents the median value of the total platform cost of the platforms in the first optimal platform group. LTB11 represents the average coefficient of the first profit-investment ratio. LTB12 represents the maximum coefficient of the first profit-investment ratio. LTB13 represents the minimum coefficient of the first profit-investment ratio. LTB14 represents the median coefficient of the first profit-investment ratio;

[0045] Among them, the second comprehensive coefficient of the profit-investment ratio is calibrated as LTB2, and the calculation formula of the second comprehensive coefficient of the profit-investment ratio LTB2 is as follows:

[0046]

[0047] Among them, the second optimal platform group is calibrated as the k2-th platform group, and k2 ∈ (11, 2, …, y), It represents the average platform cost of the second optimal platform group. SQ(k2,max) represents the maximum total oil production of the platforms in the second optimal platform group. ST(k2,max) represents the maximum total platform cost of the platforms in the second optimal platform group. SQ(k2,min) represents the minimum total oil production of the platforms in the second optimal platform group. ST(k2,min) represents the minimum total platform cost of the platforms in the second optimal platform group. SQ(k2,zws) represents the median value of the total oil production of the platforms in the second optimal platform group. ST(k2,zws) represents the median value of the total platform cost of the platforms in the second optimal platform group. LTB21 represents the average coefficient of the second profit-investment ratio. LTB22 represents the maximum coefficient of the second profit-investment ratio. LTB23 represents the minimum coefficient of the second profit-investment ratio. LTB24 represents the median coefficient of the second profit-investment ratio;

[0048] Among them, σ1, σ2, σ3, and σ4 are all preset proportionality coefficients and σ1 + σ2 + σ3 + σ4 = 1, and 0 < σ3 ≤ σ2 < σ4 < σ1 < 1.

[0049] Furthermore, according to the annual required increased oil production of tight oil, the annual oil production of new oil wells, and the optimal number of oil wells, the specific logic for generating the annual required increased number of platforms is:

[0050]

[0051] Among them, a1 represents the number of platforms to be added annually, a2 represents the annual increase in oil production, a3 represents the annual oil production of new oil wells, and a4 represents the optimal number of oil wells.

[0052] An optimization system for an exploitation platform based on the production of tight oil horizontal wells, which is used for the above-mentioned optimization method of an exploitation platform based on the production of tight oil horizontal wells, includes:

[0053] A data acquisition unit, which is used to acquire the number of oil wells contained in each platform of the tight oil exploitation platform, the total oil production of each oil well, and the cost data of each oil well;

[0054] An oil well cost calculation unit, which is used to generate the total investment cost of oil wells according to the cost data of oil wells;

[0055] A platform group data calculation unit, which is used to classify platforms with the same number of oil wells into the same platform group, and generate the total oil production of each platform group and the total cost of the platform group according to the total oil production of oil wells and the total investment cost of oil wells;

[0056] A first optimal number of oil wells calculation unit, which is used to calculate the average platform benefit of the platform group according to the total oil production of the platform group, the total cost of the platform group, and the oil price, and determine the first optimal platform group and the first optimal number of oil wells based on the average platform benefit;

[0057] A second optimal number of oil wells calculation unit, which is used to calculate the full-cycle production-investment ratio of the platform group according to the total oil production of the platform group and the total cost of the platform group, and determine the second optimal platform group and the second optimal number of oil wells based on the full-cycle production-investment ratio;

[0058] An optimal number of oil wells judgment unit, which is used to compare the first optimal number of oil wells and the second optimal number of oil wells. When the first optimal number of oil wells is the same as the second optimal number of oil wells, the first optimal number of oil wells or the second optimal number of oil wells is used as the optimal number of oil wells;

[0059] An annual number of platforms to be added calculation unit, which is used to generate the annual number of platforms to be added according to the annual increase in oil production of tight oil, the annual oil production of new oil wells, and the optimal number of oil wells.

[0060] Compared with the prior art, the beneficial effects of the present invention are:

[0061] The optimization method and system for an exploitation platform based on the production of tight oil horizontal wells in the present invention divide platforms into several platform groups according to the number of oil wells contained, and calculate the average platform benefit and the full-cycle production-investment ratio of the platform group through the total oil production and total investment cost of the oil wells, so as to determine the first optimal number of oil wells and the second optimal number of oil wells, and then determine the optimal number of oil wells and the number of platforms to be added annually in combination with the first optimal number of oil wells and the second optimal number of oil wells, thereby achieving the optimization of the platforms that need to increase production. It has the advantages of small calculation amount, simplicity, practicality and easy promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a schematic flow chart of the optimization method for an exploitation platform based on the production of tight oil horizontal wells in the present invention;

[0063] Figure 2 It is a module unit diagram of the optimization system for an exploitation platform based on the production of tight oil horizontal wells in the present invention;

[0064] Figure 3 It is a relationship diagram between the number of platform wells and the average platform benefit when the oil price is $50 per barrel in the present invention;

[0065] Figure 4 It is a relationship diagram between the number of platform wells and the average platform benefit when the oil price is $60 per barrel in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0066] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with specific embodiments.

[0067] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0068] Example 1:

[0069] Please refer to Figure 1 、 3, 4. The present invention provides an optimization method for an exploitation platform based on the production of tight oil horizontal wells, including the following steps:

[0070] S1. Obtain the number of oil wells contained in each platform of the tight oil exploitation platform, the total oil production of each oil well, and the cost data of each oil well;

[0071] As an implementation manner, the cost data of the oil well includes: 1) Horizontal section drilling investment; 2) Logging, well testing and surveying investment; 3) Total fluid injection investment; 4) Well testing project investment; 5) Fracturing project investment; 6) Cluster number investment; 7) Sand addition investment; 8) Vertical well section + build-up section drilling investment; 9) Vertical well section + build-up section casing investment; 10) Platform construction sharing investment; 11) Platform surface supporting investment; 12) Oil production cost;

[0072] Among them, the total oil production of the i-th oil well in the j-th platform is designated as Q i j , and the horizontal section drilling investment of the i-th oil well in the j-th platform is designated as T i j (1), the logging, well testing and surveying investment of the i-th oil well in the j-th platform is designated as T i j (2), the total fluid injection investment of the i-th oil well in the j-th platform is designated as T i j (3), the well testing project investment of the i-th oil well in the j-th platform is designated as T i j (4), the fracturing project investment of the i-th oil well in the j-th platform is designated as T i j (5), the cluster number investment of the i-th oil well in the j-th platform is designated as T i j (6), the sand addition investment of the i-th oil well in the j-th platform is designated as T i j (7), the vertical well section + build-up section drilling investment of the i-th oil well in the j-th platform is designated as T i j (8), the vertical well section + build-up section casing investment of the i-th oil well in the j-th platform is designated as T i j (9), the platform construction sharing investment of the i-th oil well in the j-th platform is designated as T i j (10), the platform surface supporting investment of the i-th oil well in the j-th platform is designated as T i j (11), the oil production cost of the i-th oil well in the j-th platform is designated as T i j(12), j represents the number of different platforms, and j = 1, 2, 3, ……, n, and n represents the total number of platforms, and n ∈ N + , i represents the number of different oil wells in the same platform, and i = 1, 2, 3, ……, m j , and m j represents the total number of oil wells in the j-th platform, and m j ∈ N + ;

[0073] It should be noted that the total oil production of the oil well can be calculated by first estimating the oil production of the oil well in the future period based on the oil production in the known operation period of the oil well, and then adding the two. The method of estimating the oil production of the oil well in the future period based on the oil production in the known operation period of the oil well can adopt existing mature prediction methods, which will not be elaborated here. The horizontal section drilling investment, logging and measurement investment, total liquid volume investment into the well, well testing project investment, fracturing project investment, cluster number investment, sand addition amount investment, vertical well section + build-up section drilling investment, vertical well section + build-up section casing investment, platform construction sharing investment, platform surface supporting investment, and oil production cost of the oil well can be obtained through the oil well construction and operation investment cost table.

[0074] S2. Generate the total investment cost of the oil well according to the cost data of the oil well, specifically as follows:

[0075] Calibrate the total investment cost of the i-th oil well in the j-th platform as T i j , the total investment cost T of the oil well i j The calculation formula is:

[0076]

[0077] It should be noted that represents the total drilling investment of the i-th oil well in the j-th platform, which consists of the horizontal section drilling investment T i j (1), logging and measurement investment T i j (2), total liquid volume investment into the well T i j (3), well testing project investment T i j (4), fracturing project investment T i j (5), cluster number investment T i j (6), sand addition amount investment T i j (7), vertical well section + build-up section drilling investment T i j(8), Investment T for the casing in the vertical well section + deviated well section i j (9), Investment T allocated for platform construction i j (10), And investment T for the surface facilities supporting the platform i j (11) Obtained by accumulation;

[0078] It should be noted that represents the surface construction cost allocated for the i-th oil well on the j-th platform, which is in direct proportion to the total drilling investment of the oil well So, the product of the total drilling investment TI of the oil well i j and the preset proportionality coefficient τ is taken as the surface construction cost allocated The specific value of the preset proportionality coefficient τ is generally determined by those skilled in the art according to the actual situation. For example, the value range of τ is 0.1 - 0.2, and specifically, it can be taken as 0.15;

[0079] It should be noted that the total investment cost T of the oil well i j is composed of the manufacturing cost and the operating cost, that is, the total investment cost T of the oil well i j is obtained by accumulating the total drilling investment of the oil well the surface construction cost allocated and the oil production cost T i j (12) Obtained by accumulation.

[0080] S3. Group the platforms with the same number of oil wells into the same platform group. According to the total oil production of the oil wells and the total investment cost of the oil wells, generate the total oil production of each platform group and the total cost of the platform group, including the following steps:

[0081] S31. According to the total oil production of the oil wells and the total investment cost of the oil wells, generate the total oil production of the platform and the total cost of the platform, specifically as follows:

[0082] Calibrate the total oil production of the j-th platform as SQ j , and the calculation formula for the total oil production SQ of the platform j is as follows:

[0083]

[0084] It should be noted that the total oil production SQ of the j-th platform j is obtained by accumulating the total oil production of the m j oil wells in the j-th platform;

[0085] Calibrate the total cost of the j-th platform as STj , the total platform cost ST j is calculated as follows:

[0086]

[0087] It should be noted that the total platform cost ST of the j-th platform j is obtained by accumulating the total investment costs of the m j oil wells in the j-th platform;

[0088] S32. Count the number of oil wells in each platform, group the platforms with the same number of oil wells into the same platform group, and generate the total oil production and total cost of each platform group based on the total oil production and total cost of the platforms, as follows:

[0089] The total oil production of the k-th platform group with the same number of oil wells is designated as SQ(k), and the total cost of the k-th platform group with the same number of oil wells is designated as ST(k). k represents the number of different platform groups, and k = 1, 2, 3,..., y, where y represents the total number of different platform groups, and y ∈ N + ;

[0090]

[0091] It should be noted that x represents the number of different platforms in the same platform group, and x = 1, 2, 3,..., n k , and n k represents the total number of platforms in the k-th platform group, and n k ∈ N + , SQ(k, x) represents the total oil production of the x-th platform in the k-th platform group, and SQ(k, x) ∈ (SQ1, SQ2,..., SQ j ,..., SQ n ), ST(k, x) represents the total cost of the x-th platform in the k-th platform group, and ST(k, x) ∈ (ST1, ST2,..., ST j ,..., ST n ).

[0092] S4. Calculate the average platform benefit of the platform group based on the total oil production, total cost, and oil price of the platform group, and determine the first optimal platform group and the first optimal number of oil wells based on the average platform benefit, including the following steps:

[0093] S41. Generate the average platform benefit of the platform group based on the total oil production, total cost, and oil price of the platform group, as follows:

[0094] Designate the average platform benefit of the k-th platform group with the same number of oil wells as Average platform benefit The calculation formula is as follows;

[0095]

[0096] It should be noted that p represents the oil price, and the oil price p can be directly obtained through international real-time oil price data;

[0097] It should be noted that first calculate the total platform income of the kth platform group by p*SQ(k), then subtract the total platform cost of the platform group to obtain the total platform benefit of the kth platform group, and finally divide the total platform benefit of the kth platform group by n k to obtain the average platform benefit of the kth platform group

[0098] S42. After removing the platform groups with 1 and 3 platforms, and the platform groups with more than 8 oil wells in a single platform, take the platform group where the maximum average platform benefit is located as the first optimal platform group, and take the number of oil wells in a single platform in the first optimal platform group as the first optimal number of oil wells;

[0099] It should be noted that for the platform group with 1 platform, it cannot reflect the internal relationship between the number of oil wells contained in the platform and the benefit. Therefore, the platform group with 1 platform is removed. For the platform group with more than 8 oil wells in a single platform, there are insurmountable difficulties in geology, reservoir, and engineering. Therefore, the platform group with more than 8 oil wells in a single platform is removed. For the platform group with 3 platforms, due to the influence of special factors such as geology and reservoir, it is easy to be a singular point during processing and calculation. Therefore, the platform group with 3 platforms is removed;

[0100] It should be noted that the greater the average platform benefit of the platform group, the better the platform benefit in the platform group, the more conducive to production application, and the more scientific and reasonable the arrangement of the number of oil wells in a single platform in the platform group. Therefore, after removing the platform groups with 1 and 3 platforms, and the platform groups with more than 8 oil wells in a single platform, take the platform group where the maximum average platform benefit is located as the first optimal platform group, and take the number of oil wells in a single platform in the first optimal platform group as the first optimal number of oil wells;

[0101] As an implementation method, taking 47 platforms that have been put into production in a certain oilfield, with a total of 322 tight oil horizontal wells as an example, the data of the total platform oil production and the total platform cost are shown in Table 1 below:

[0102] Table 1

[0103]

[0104]

[0105] Classify the platforms according to the number of oil wells to form platform groups, and calculate the average platform benefit of each platform group. The calculation results are shown in Table 2 below:

[0106] Table 2

[0107]

[0108]

[0109] Draw a relationship graph between the number of platform wells and the average platform benefit according to Table 2, as shown in Figure 3 and Figure 4 It can be seen from this that when the oil price is $50 per barrel, the number of wells in the platform with the best benefit should be 4, that is, the first optimal number of oil wells is 4. When the oil price is $60 per barrel, the number of wells in the platform with the best benefit should be 5, that is, the first optimal number of oil wells is 5.

[0110] S5. Calculate the full-cycle production-investment ratio of the platform group based on the total oil production of the platform group and the total cost of the platform group, and determine the second-optimal platform group and the second-optimal number of oil wells according to the full-cycle production-investment ratio, including the following steps:

[0111] S51. Divide the total oil production of the platform group by the total cost of the platform group to generate the full-cycle production-investment ratio of the platform group, specifically as follows:

[0112] Mark the full-cycle production-investment ratio of the kth platform group as R k , and the calculation formula of the full-cycle production-investment ratio R k is as follows:

[0113]

[0114] It should be noted that the larger the ratio of the total oil production of the kth platform group to the total cost of the platform group, the higher the investment return of the platform group, and the larger the full-cycle production-investment ratio R k will be;

[0115] S52. After removing the platform groups with 1 and 3 platforms, and the platform groups with more than 8 oil wells in a single platform, take the platform group where the maximum value of the full-cycle production-investment ratio is located as the second-optimal platform group, and take the number of oil wells in a single platform in the second-optimal platform group as the second-optimal number of oil wells;

[0116] It should be noted that the larger the full-cycle production-investment ratio, the better the platform benefit in the platform group, the more conducive to production application, and the more scientific and reasonable the arrangement of the number of oil wells in a single platform in the platform group. Therefore, take the platform group where the maximum value of the full-cycle production-investment ratio is located as the second-optimal platform group, and take the number of oil wells in a single platform in the second-optimal platform group as the second-optimal number of oil wells.

[0117] S6. Compare the first optimal number of oil wells and the second optimal number of oil wells. When the first optimal number of oil wells is the same as the second optimal number of oil wells, take the first optimal number of oil wells or the second optimal number of oil wells as the optimal number of oil wells.

[0118] Furthermore, when the first optimal number of oil wells is different from the second optimal number of oil wells, generate the first profit - investment ratio comprehensive coefficient based on the total platform oil production and the total platform cost of the platforms in the first optimal platform group, and generate the second profit - investment ratio comprehensive coefficient based on the total platform oil production and the total platform cost of the platforms in the second optimal platform group. Compare the first profit - investment ratio comprehensive coefficient and the second profit - investment ratio comprehensive coefficient. When the first profit - investment ratio evaluation sum is greater than the second profit - investment ratio comprehensive coefficient, take the first optimal number of oil wells as the optimal number of oil wells, and when the first profit - investment ratio comprehensive coefficient is not greater than the second profit - investment ratio comprehensive coefficient, take the second optimal number of oil wells as the optimal number of oil wells.

[0119] Among them, calibrate the first profit - investment ratio comprehensive coefficient as LTB1, and the calculation formula of the first profit - investment ratio comprehensive coefficient LTB1 is as follows:

[0120]

[0121] It should be noted that calibrate the first optimal platform group as the k1 - th platform group, and k1 ∈ (1, 2, …, y). represents the average platform cost of the first optimal platform group, which is obtained by adding up the total platform costs of each platform in the first optimal platform group and then dividing by the total number of platforms in the first optimal platform group. SQ(k1, max) represents the maximum total platform oil production in the first optimal platform group, ST(k1, max) represents the maximum total platform cost in the first optimal platform group, SQ(k1, min) represents the minimum total platform oil production in the first optimal platform group, ST(k1, min) represents the minimum total platform cost in the first optimal platform group, SQ(k1, zws) represents the median value of the total platform oil production in the first optimal platform group, ST(k1, zws) represents the median value of the total platform cost in the first optimal platform group. SQ(k1, max), ST(k1, max), SQ(k1, min), ST(k1, min), SQ(k1, zws), and ST(k1, zws) can all be obtained through existing data - processing software.

[0122] It should be noted that LTB11 represents the first average profit - investment ratio coefficient, which is obtained by dividing the average platform benefit of the first optimal platform group by the average platform cost.

[0123] It should be noted that LTB12 represents the maximum coefficient of the first profit - investment ratio, which is calculated based on the maximum value of the total oil production of the platforms and the maximum value of the total platform costs in the first optimal platform group;

[0124] It should be noted that LTB13 represents the minimum coefficient of the first profit - investment ratio, which is calculated based on the minimum value of the total oil production of the platforms and the minimum value of the total platform costs in the first optimal platform group;

[0125] It should be noted that LTB14 represents the median coefficient of the first profit - investment ratio, which is calculated based on the median value of the total oil production of the platforms and the median value of the total platform costs in the first optimal platform group;

[0126] It should be noted that σ1, σ2, σ3, and σ4 are all preset proportionality coefficients. σ1 represents the weight of LTB11 in the calculation of the first profit - investment ratio comprehensive coefficient LTB1, σ2 represents the weight of LTB12 in the calculation of the first profit - investment ratio comprehensive coefficient LTB1, σ3 represents the weight of LTB13 in the calculation of the first profit - investment ratio comprehensive coefficient LTB1, σ4 represents the weight of LTB14 in the calculation of the first profit - investment ratio comprehensive coefficient LTB1, and σ1 + σ2 + σ3 + σ4 = 1, and 0 < σ3 ≤ σ2 < σ4 < σ1 < 1. The specific values of σ1, σ2, σ3, and σ4 are generally determined by those skilled in the art according to the actual usage environment of the hard disk;

[0127] As an implementation, the value range of σ1 is 0.4 - 0.6, the value range of σ2 is 0.2 - 0.3, the value range of σ3 is 0.05 - 0.2, and the value range of σ4 is 0.05 - 0.2;

[0128] It should be noted that by assigning different weights to the first profit - investment ratio average coefficient LTB11, the first profit - investment ratio maximum coefficient LTB12, the first profit - investment ratio minimum coefficient LTB13, and the first profit - investment ratio median coefficient LTB14, and then performing accumulation to obtain the first profit - investment ratio comprehensive coefficient LTB1, the influence factors of data dispersion are comprehensively considered when calculating the first profit - investment ratio comprehensive coefficient LTB1, thereby improving the comprehensiveness and accuracy of the first profit - investment ratio comprehensive coefficient LTB1 in reflecting the situation of the first optimal platform group;

[0129] Among them, the second profit - investment ratio comprehensive coefficient is designated as LTB2, and the calculation formula of the second profit - investment ratio comprehensive coefficient LTB2 is as follows:

[0130]

[0131] It should be noted that the second optimal platform group is designated as the k2 - th platform group, and k2 ∈ (1, 2, …, y); It represents the average platform cost of the second optimal platform group, which is obtained by summing up the total platform costs of each platform in the second optimal platform group and then dividing by the total number of platforms in the second optimal platform group. SQ(k2,max) represents the maximum total oil production of the platforms in the second optimal platform group, ST(k2,max) represents the maximum total platform cost of the platforms in the second optimal platform group, SQ(k2,min) represents the minimum total oil production of the platforms in the second optimal platform group, ST(k2,min) represents the minimum total platform cost of the platforms in the second optimal platform group, SQ(k2,zws) represents the median value of the total oil production of the platforms in the second optimal platform group, and ST(k2,zws) represents the median value of the total platform cost of the platforms in the second optimal platform group. SQ(k2,max), ST(k2,max), SQ(k2,min), ST(k2,min), SQ(k2,zws), and ST(k2,zws) can all be obtained through existing data processing software;

[0132] It should be noted that LTB21 represents the average coefficient of the second profit-investment ratio, which is obtained by dividing the average platform benefit of the second optimal platform group by the average platform cost;

[0133] It should be noted that LTB22 represents the maximum coefficient of the second profit-investment ratio, which is calculated based on the maximum total oil production of the platforms and the maximum total platform cost in the second optimal platform group;

[0134] It should be noted that LTB23 represents the minimum coefficient of the second profit-investment ratio, which is calculated based on the minimum total oil production of the platforms and the minimum total platform cost in the second optimal platform group;

[0135] It should be noted that LTB24 represents the median coefficient of the second profit-investment ratio, which is calculated based on the median value of the total oil production of the platforms and the median value of the total platform cost in the second optimal platform group;

[0136] It should be noted that by assigning different weights to the average coefficient of the second profit-investment ratio LTB21, the maximum coefficient of the second profit-investment ratio LTB22, the minimum coefficient of the second profit-investment ratio LTB23, and the median coefficient of the second profit-investment ratio LTB24, and then performing accumulation to obtain the comprehensive coefficient of the second profit-investment ratio LTB2, the influence factors of data dispersion are comprehensively considered when calculating the comprehensive coefficient of the second profit-investment ratio LTB2, so as to improve the comprehensiveness and accuracy of the comprehensive coefficient of the second profit-investment ratio LTB2 in reflecting the situation of the second optimal platform group.

[0137] S7. Based on the annual required increased oil production of tight oil, the annual oil production of new oil wells, and the optimal number of oil wells, generate the annual required increased number of platforms. The calculation formula is as follows:

[0138]

[0139] It should be noted that, a1 represents the number of platforms to be added annually, a2 represents the annual oil production to be increased. The annual oil production to be increased a2 is determined by the annual production increase plan of the oilfield company. a3 represents the annual oil production of a new oil well. The annual oil production of a new oil well a3 selects the first-year oil production of a new oil well when the oilfield company previously exploited oil wells. a4 represents the optimal number of oil wells. The optimal number of oil wells a4 is determined by the above-mentioned step S6;

[0140] It should be noted that, first, calculate the number of oil wells to be added annually, and then divide the number of oil wells to be added annually by the optimal number of oil wells to calculate the number of platforms to be added annually when selecting platforms with the optimal number of oil wells. When the number of platforms to be added annually a1 has a decimal, round up.

[0141] Embodiment 2:

[0142] Please refer to Figure 2 , the present invention provides an optimization system for an exploitation platform based on the production of tight oil horizontal wells for the above-mentioned optimization method of an exploitation platform based on the production of tight oil horizontal wells, including:

[0143] A data acquisition unit, configured to acquire the number of oil wells contained in each platform of the tight oil exploitation platform, the total oil production of each oil well, and the cost data of each oil well;

[0144] An oil well cost calculation unit, configured to generate the total investment cost of the oil well according to the cost data of the oil well;

[0145] A platform group data calculation unit, configured to group platforms with the same number of oil wells into the same platform group, and generate the total oil production of each platform group and the total cost of the platform group according to the total oil production of the oil well and the total investment cost of the oil well;

[0146] A first optimal number of oil wells calculation unit, configured to calculate the average platform benefit of the platform group according to the total oil production of the platform group, the total cost of the platform group, and the oil price, and determine the first optimal platform group and the first optimal number of oil wells based on the average platform benefit;

[0147] A second optimal number of oil wells calculation unit, configured to calculate the full-cycle production-investment ratio of the platform group according to the total oil production of the platform group and the total cost of the platform group, and determine the second optimal platform group and the second optimal number of oil wells based on the full-cycle production-investment ratio;

[0148] An optimal number of oil wells judgment unit, configured to compare the first optimal number of oil wells and the second optimal number of oil wells. When the first optimal number of oil wells and the second optimal number of oil wells are the same, use the first optimal number of oil wells or the second optimal number of oil wells as the optimal number of oil wells;

[0149] The annual required number of platforms calculation unit is needed, which is used to generate the annual required number of platforms according to the annual required increased oil production of tight oil, the annual oil production of new oil wells, and the optimal number of oil wells.

[0150] The above formulas are all calculated by taking the numerical values after dimensionless. The formula is a formula obtained by collecting a large amount of data for software simulation to get the closest real situation. The preset parameters in the formula are set by those skilled in the art according to the actual situation.

[0151] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in this article can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software methods depends on the specific application and design constraints of the technical solution.

[0152] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units. They can be located in one place or 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.

[0153] As described above, it is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application, and all of them should be covered within the protection scope of this application.

Claims

1. An optimization method for an exploitation platform based on the production of horizontal wells in tight oil, characterized in that It includes the following steps: S1. Obtain the number of oil wells in each platform of the tight oil production platform, the total oil production of each oil well, and the cost data of each oil well; S2. Generate the total investment cost of the oil wells according to the cost data of the oil wells; S3. Group the platforms with the same number of oil wells into the same platform group, and generate the total oil production of each platform group and the total cost of the platform group according to the total oil production of the oil wells and the total investment cost of the oil wells; S4. Calculate the average platform benefit of the platform group according to the total oil production of the platform group, the total cost of the platform group, and the oil price, and determine the first optimal platform group and the first optimal number of oil wells based on the average platform benefit; S5. Calculate the full-cycle production-investment ratio of the platform group according to the total oil production of the platform group and the total cost of the platform group, and determine the second optimal platform group and the second optimal number of oil wells based on the full-cycle production-investment ratio; S6. Compare the first optimal number of oil wells and the second optimal number of oil wells. When the first optimal number of oil wells is the same as the second optimal number of oil wells, use the first optimal number of oil wells or the second optimal number of oil wells as the optimal number of oil wells; S7. Generate the number of platforms to be added annually according to the annual required increase in oil production of tight oil, the annual oil production of new oil wells, and the optimal number of oil wells.

2. The optimization method of the exploitation platform based on the production of horizontal wells in tight oil, as claimed in claim 1, wherein: The cost data of the oil wells includes horizontal section drilling investment, logging and measurement investment, total fluid volume investment in the well, well testing project investment, fracturing project investment, cluster number investment, sand addition amount investment, vertical well section + build-up section drilling investment, vertical well section + build-up section casing investment, platform construction share investment, platform surface supporting investment, and oil production cost.

3. The optimization method of the exploitation platform based on the production of horizontal wells in tight oil according to claim 2, wherein: Calibrate the total oil production of the \(i\)-th oil well on the \(j\)-th platform as \(Q\). i j Calibrate the horizontal section drilling investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (1) Calibrate the logging and survey investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (2) Calibrate the total fluid injection investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (3) Calibrate the well testing project investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (4) Calibrate the fracturing project investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (5) Calibrate the cluster number investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (6) Calibrate the sand addition investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (7) Calibrate the vertical section + build-up section drilling investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (8) Calibrate the vertical section + build-up section casing investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (9) Calibrate the platform construction sharing investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (10) Calibrate the platform surface supporting investment of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (11) Calibrate the oil production cost of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j (12) \(j\) represents the number of different platforms, and \(j = 1, 2, 3, \cdots, n\), and \(n\) represents the total number of platforms, and \(n\in N\). + \(i\) represents the number of different oil wells in the same platform, and \(i = 1, 2, 3, \cdots, m\). j And \(m\). j Represents the total number of oil wells in the \(j\)-th platform, and \(m\). j \(\in N\). + ; Define the total investment cost of the \(i\)-th oil well on the \(j\)-th platform as \(T\). i j Define the total oil production of the \(j\)-th platform as \(SQ\). j Define the total cost of the \(j\)-th platform as \(ST\). j Define the total oil production of the \(k\)-th platform group with the same number of oil wells as \(SQ(k)\), and define the total cost of the \(k\)-th platform group with the same number of oil wells as \(ST(k)\). Define the average benefit of the \(k\)-th platform group with the same number of oil wells as Define the full-cycle production-investment ratio of the \(k\)-th platform group as \(R\). k where \(k\) represents the number of different platform groups, \(k = 1, 2, 3, \cdots, y\), \(y\) represents the total number of different platform groups, and \(y\in N\). + .

4. The optimization method of the exploitation platform based on the production of tight oil horizontal wells according to claim 3, characterized in that: The specific logic for generating the total investment cost of the oil wells according to the cost data of the oil wells is as follows: The total investment cost T of the oil well i j is calculated as follows: Among them, represents the total drilling investment of the i-th oil well on the j-th platform, represents the allocated cost of surface construction for the i-th oil well on the j-th platform, τ is a preset proportionality coefficient, and the value range of τ is 0.1 - 0.

2.

5. The optimization method of the exploitation platform based on the production of tight oil horizontal wells according to claim 3, wherein: The specific logic for grouping the platforms with the same number of oil wells into the same platform group and generating the total oil production of each platform group and the total cost of the platform group according to the total oil production of the oil wells and the total investment cost of the oil wells is as follows: S31. Generate the total oil production of the platform and the total cost of the platform according to the total oil production of the oil wells and the total investment cost of the oil wells, as follows: Among them, the total platform oil production SQ j is calculated as follows: Among them, the total platform cost ST j has the following calculation formula: S32. Count the number of oil wells in each platform, group the platforms with the same number of oil wells into the same platform group, and generate the total oil production of each platform group and the total cost of the platform group according to the total oil production of the platform and the total cost of the platform, as follows: Among them, the calculation formulas for the total oil production SQ(k) of the platform and the total cost ST(k) of the platform are as follows; Among them, x represents the numbers of different platforms in the same platform group, and x = 1, 2, 3, ……, n k , and n k represents the total number of platforms in the k-th platform group, and n k ∈N + , SQ(k, x) represents the total oil production of the x-th platform in the k-th platform group, and ST(k, x) represents the total cost of the x-th platform in the k-th platform group.

6. The optimization method of the production platform based on the production of tight oil horizontal wells according to claim 3, characterized in that: The specific logic for calculating the average platform benefit of the platform group according to the total oil production of the platform group, the total cost of the platform group, and the oil price, and determining the first optimal platform group and the first optimal number of oil wells based on the average platform benefit is as follows: S41. Generate the average platform benefit of the platform group according to the total oil production of the platform group, the total cost of the platform group, and the oil price, as follows: Among them, the average platform benefit is calculated as follows; Among them, p represents the oil price; S42. After removing the platform groups with 1 and 3 platforms and the platform groups with more than 8 oil wells in a single platform, use the platform group with the maximum average platform benefit as the first optimal platform group, and use the number of oil wells in a single platform in the first optimal platform group as the first optimal number of oil wells.

7. The optimization method of the production platform based on the production of horizontal wells in tight oil reservoirs according to claim 3, characterized in that: According to the total oil production of the platform group and the total cost of the platform group, calculate the full-cycle production-investment ratio of the platform group, and based on the full-cycle production-investment ratio, determine the specific logic of the second-optimal platform group and the number of second-optimal oil wells as follows: S51. Divide the total oil production of the platform group by the total cost of the platform group to generate the full-cycle production-investment ratio of the platform group, as follows: Among them, the full-cycle production-investment ratio R k has the following calculation formula: S52. After removing the platform groups with 1 and 3 platforms, and the platform groups with more than 8 oil wells in a single platform, take the platform group where the full-cycle production-investment ratio is the maximum as the second-optimal platform group, and take the number of oil wells in a single platform in the second-optimal platform group as the number of second-optimal oil wells.

8. The optimization method of the exploitation platform based on the production of horizontal wells in tight oil according to claim 3, wherein: When the number of first-optimal oil wells is different from the number of second-optimal oil wells, generate the first profit-investment ratio comprehensive coefficient according to the total oil production and total cost of the platforms in the first-optimal platform group, and generate the second profit-investment ratio comprehensive coefficient according to the total oil production and total cost of the platforms in the second-optimal platform group. Compare the first profit-investment ratio comprehensive coefficient and the second profit-investment ratio comprehensive coefficient. When the first profit-investment ratio evaluation comprehensive coefficient is greater than the second profit-investment ratio comprehensive coefficient, take the number of first-optimal oil wells as the optimal number of oil wells; when the first profit-investment ratio comprehensive coefficient is not greater than the second profit-investment ratio comprehensive coefficient, take the number of second-optimal oil wells as the optimal number of oil wells. Among them, the first profit-investment ratio comprehensive coefficient is denoted as LTB1, and the calculation formula of the first profit-investment ratio comprehensive coefficient LTB1 is as follows: Among them, the first optimal platform group is designated as the k1-th platform group, and k1 ∈ (1, 2, …, y). represents the average platform cost of the first optimal platform group, SQ(k1, max) represents the maximum total oil production of the platforms in the first optimal platform group, ST(k1, max) represents the maximum total platform cost of the platforms in the first optimal platform group, SQ(k1, min) represents the minimum total oil production of the platforms in the first optimal platform group, ST(k1, min) represents the minimum total platform cost of the platforms in the first optimal platform group, SQ(k1, zws) represents the median value of the total oil production of the platforms in the first optimal platform group, ST(k1, zws) represents the median value of the total platform cost of the platforms in the first optimal platform group, LTB11 represents the first average coefficient of the profit-to-investment ratio, LTB12 represents the first maximum coefficient of the profit-to-investment ratio, LTB13 represents the first minimum coefficient of the profit-to-investment ratio, and LTB14 represents the first median coefficient of the profit-to-investment ratio; Among them, the second profit-investment ratio comprehensive coefficient is denoted as LTB2, and the calculation formula of the second profit-investment ratio comprehensive coefficient LTB2 is as follows: Among them, the second-optimal platform group is designated as the k2-th platform group, and k2 ∈ (11, 2, …, y). represents the average platform cost of the second-optimal platform group, SQ(k2, max) represents the maximum total oil production of the platforms in the second-optimal platform group, ST(k2, max) represents the maximum total platform cost in the second-optimal platform group, SQ(k2, min) represents the minimum total oil production of the platforms in the second-optimal platform group, ST(k2, min) represents the minimum total platform cost in the second-optimal platform group, SQ(k2, zws) represents the median value of the total oil production of the platforms in the second-optimal platform group, ST(k2, zws) represents the median value of the total platform cost in the second-optimal platform group, LTB21 represents the average coefficient of the second profit-to-investment ratio, LTB22 represents the maximum coefficient of the second profit-to-investment ratio, LTB23 represents the minimum coefficient of the second profit-to-investment ratio, and LTB24 represents the median coefficient of the second profit-to-investment ratio; Among them, σ1, σ2, σ3, and σ4 are all preset proportional coefficients and σ1 + σ2 + σ3 + σ4 = 1, and 0 < σ3 ≤ σ2 < σ4 < σ1 < 1.

9. The optimization method of the exploitation platform based on the production of horizontal wells in tight oil reservoirs according to claim 3, characterized in that: According to the annual required increased oil production of tight oil, the annual oil production of new oil wells, and the optimal number of oil wells, generate the specific logic of the annual required increased number of platforms as follows: Among them, a1 represents the annual required increased number of platforms, a2 represents the annual required increased oil production, a3 represents the annual oil production of new oil wells, and a4 represents the optimal number of oil wells.

10. An optimization system for an exploitation platform based on the production of tight oil horizontal wells, which is used for the optimization method of the exploitation platform based on the production of tight oil horizontal wells according to any one of claims 1-9 above, characterized in that, Including: A data acquisition unit for acquiring the number of oil wells contained in each platform of the tight oil production platform, the total oil production of each oil well, and the cost data of each oil well; An oil well cost calculation unit for generating the total investment cost of oil wells according to the cost data of the oil wells; A platform group data calculation unit for classifying the platforms with the same number of oil wells into the same platform group, and generating the total oil production of each platform group and the total cost of the platform group according to the total oil production of the oil wells and the total investment cost of the oil wells; A first-optimal number of oil wells calculation unit for calculating the average platform benefit of the platform group according to the total oil production of the platform group, the total cost of the platform group, and the oil price, and determining the first-optimal platform group and the first-optimal number of oil wells based on the average platform benefit; A second-optimal number of oil wells calculation unit for calculating the full-cycle production-investment ratio of the platform group according to the total oil production of the platform group and the total cost of the platform group, and determining the second-optimal platform group and the second-optimal number of oil wells based on the full-cycle production-investment ratio. The optimal number of oil wells determination unit is used to compare the first optimal number of oil wells and the second optimal number of oil wells. When the first optimal number of oil wells is the same as the second optimal number of oil wells, the first optimal number of oil wells or the second optimal number of oil wells is used as the optimal number of oil wells. The annual required number of platforms calculation unit is used to generate the annual required number of platforms according to the annual required increased oil production of tight oil, the annual oil production of new oil wells, and the optimal number of oil wells.

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