Method and system for determining optimal drilling plan of oil exploitation

Abstract

The invention discloses a method and a system for determining an optimal drilling plan for oil exploitation, relates to the technical field of drilling for oil exploitation, and comprises a method for estimating initial productivity, optimizing drilling efficiency according to the productivity, analyzing comprehensive cost effectiveness and adjusting and determining the optimal drilling plan. The data exploration acquisition module is responsible for collecting and inputting geological exploration, cost and market oil price conditions related to a drilling plan, and the plan evaluation and analysis module is responsible for sequentially calculating and outputting an initial productivity estimated value CN, a drilling efficiency value XL and a cost-benefit analysis value ZXY. The adjusting and feedback module is responsible for optimizing and adjusting productivity and efficiency according to the current drilling plan, the planning implementation module is responsible for implementing according to the adjusted and determined drilling plan, and the system has the beneficial effects of quantitative analysis, scientific parameter adjustment and cyclic feedback and continuous optimization, so that an accurate data basis is provided, and the system is suitable for large-scale popularization and application. And comprehensive optimization and continuous improvement of drilling operation are promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling in oil extraction, and specifically to a method and system for determining an optimal drilling plan for oil extraction. Background Art

[0002] With the continuous growth of global energy demand, the oil extraction industry faces huge challenges and opportunities. In order to improve extraction efficiency and economic benefits, oil companies urgently need a method and system that can determine the optimal drilling plan.

[0003] In the field of oil extraction, determining the optimal drilling plan is a complex and crucial task. Existing technologies often rely on empirical judgment and qualitative analysis, lacking precise quantitative indicators to evaluate the economy, efficiency, and benefits of drilling plans. Moreover, due to the lack of support from mathematical models, it is often difficult to grasp the amplitude and direction of adjustment when adjusting drilling parameters in existing technologies, resulting in poor optimization effects. In addition, existing technologies lack an effective loop feedback mechanism and cannot continuously optimize and adjust the drilling plan based on the results of comprehensive cost-benefit analysis. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for determining an optimal drilling plan for oil extraction, which solves the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following method for determining an optimal drilling plan for oil extraction, including a method for estimating initial production capacity, optimizing drilling efficiency based on production capacity, analyzing comprehensive cost-benefit, and then adjusting and determining the optimal drilling plan;

[0006] It includes a data exploration and collection module, a plan evaluation and analysis module, an adjustment and feedback module, and an implementation plan module;

[0007] The specific determination method is as follows:

[0008] Data exploration and collection module: responsible for collecting and inputting the geological exploration, cost, and market oil price conditions related to the drilling plan;

[0009] Plan evaluation and analysis module: responsible for calculating and outputting the initial production capacity estimation value CN, drilling efficiency value XL, and cost-benefit analysis value ZXY in sequence;

[0010] Adjustment and feedback module: responsible for optimizing and adjusting the production capacity and efficiency based on the results of the cost-benefit analysis value ZXY for the current drilling plan;

[0011] Implementation plan module: responsible for implementing according to the adjusted and determined drilling plan;

[0012] Among them, the planned evaluation and analysis module includes an initial production capacity unit reflecting the drilling plan, an efficiency and effectiveness unit reflecting the drilling operation, and an economic and benefit unit comprehensively reflecting the drilling plan.

[0013] Optionally, the calculation formula of the initial production capacity unit reflecting the drilling plan is as follows:

[0014]

[0015] Wherein:

[0016] CN is the estimated value of the initial production capacity, in barrels per day;

[0017] SD is the drilling depth, in meters;

[0018] SH is the reservoir thickness, in meters, and SH reflects the thickness of the rock layer containing hydrocarbon resources;

[0019] CB is the drilling cost, in ten thousand yuan per day, and CB reflects all the expenses directly related to the drilling operation, specifically including the rental and purchase costs of drilling equipment, the cost of drilling fluid, and the wages of drilling personnel;

[0020] CF is the operating cost, in ten thousand yuan per day, and CF reflects the expenses incurred to maintain the normal production of the oil well after the drilling operation is completed, specifically including the daily maintenance cost of the oil well, personnel wages, electricity costs, and water treatment costs.

[0021] Optionally, the calculation formula of the efficiency and effectiveness unit reflecting the drilling operation is as follows:

[0022]

[0023] Wherein:

[0024] XL is the drilling efficiency value;

[0025] X is the drilling efficiency coefficient;

[0026] SL is the drilling rate, in meters per day;

[0027] CN max is the maximum production capacity, in barrels per day;

[0028] W is the reservoir stability coefficient.

[0029] Optionally, the calculation formula of the drilling efficiency coefficient X is as follows:

[0030]

[0031] XL i is the i-th drilling efficiency value, reflecting the efficiency of different drilling operations;

[0032] N is the total amount of drilling operations;

[0033] SN is the number of years in use;

[0034] ZN is the total expected service life;

[0035] The number of years in use SN and the total expected service life ZN respectively reflect the number of years in use and the expected remaining service life of the same drilling equipment after the i-th drilling efficiency value XL of the total amount of drilling operations N; i after that;

[0036] The calculation formula of the drilling rate SL is as follows:

[0037] SL = SD / T;

[0038] T is the drilling cycle;

[0039] The reservoir stability coefficient W is determined based on three known aspects of geological exploration data, logging data, and the physical properties of the reservoir. Specifically, the calculation formula is as follows:

[0040] W = A×a + B×b + C×c;

[0041] A, B, and C respectively reflect the evaluation values of geological exploration data, logging data, and the physical properties of the reservoir;

[0042] a, b, and c respectively reflect the weights of geological exploration data, logging data, and the physical properties of the reservoir.

[0043] Optionally, the calculation formula for comprehensively reflecting the economic and benefit unit of the drilling plan is as follows:

[0044]

[0045] Where:

[0046] ZXY is the cost-benefit analysis value, in ten thousand yuan per day;

[0047] YJ is the oil price, in ten thousand yuan per barrel;

[0048] ZCB is the total cost, including drilling cost CB, operating cost CF, equipment purchase cost, land lease cost, and environmental protection cost;

[0049] XL max is the maximum drilling efficiency.

[0050] Optionally, the optimization adjustment based on the cost-benefit analysis value ZXY is as follows:

[0051] First, a cost expected benefit ZXY0 is set before the plan for each drilling operation;

[0052] If the cost-benefit analysis value ZXY is higher than the cost expected benefit ZXY0, it indicates that the current drilling plan is economically feasible, and the drilling plan shall be determined and implemented based on the parameters in the current plan;

[0053] If the cost-benefit analysis value ZXY is lower than the cost expected benefit ZXY0, it indicates that there are deficiencies in the current drilling plan economically, and the production capacity and efficiency shall be optimized and adjusted as follows:

[0054] When the geological exploration data indicates that the reservoir is shallow and deep, the drilling depth SD shall be increased and decreased;

[0055] When the drilling efficiency value XL is lower than the drilling efficiency value XL of the previous drilling plan, the drilling parameters shall be optimized;

[0056] When the oil well operation data indicates high energy consumption and low oil production efficiency under the current operation mode, the operation mode shall be improved.

[0057] Optionally, the equipment used by the data exploration and collection module includes geological exploration equipment, data collection equipment, and storage equipment;

[0058] The equipment used by the plan evaluation and analysis module includes computing and analysis equipment, geological exploration equipment, and storage equipment;

[0059] The equipment used by the adjustment and feedback module includes data automation adjustment software;

[0060] The equipment used by the implementation plan module includes drilling equipment.

[0061] The present invention also provides an optimal drilling plan determination system for oil exploitation, including a data exploration and collection module, a plan evaluation and analysis module, an adjustment and feedback module, and an implementation plan module;

[0062] The data exploration and collection module is used to collect and input the geological exploration, cost, and market oil price conditions related to the drilling plan;

[0063] The plan evaluation and analysis module is used to calculate and output the initial production capacity estimation value CN, the drilling efficiency value XL, and the cost-benefit analysis value ZXY;

[0064] The adjustment and feedback module is used to optimize and adjust and determine the production capacity and efficiency of the current drilling plan;

[0065] The implementation plan module is used to implement the currently determined drilling plan

[0066] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0067] 1. The present invention realizes the quantitative analysis of the drilling plan through three interdependent algorithm formulas constructed by reflecting the initial production capacity unit of the drilling plan, reflecting the drilling operation efficiency and effect unit, and comprehensively reflecting the economy and benefit unit of the drilling plan. These formulas consider the drilling depth SD, reservoir thickness SH, drilling cost CB, operation cost CF, drilling efficiency coefficient X, drilling rate SL, maximum production capacity CN max , reservoir stability coefficient W, oil price YJ, total cost ZCB, and maximum drilling efficiency XL max and multiple factors, thereby improving the accuracy and precision of the analysis.

[0068] 2. Based on the mathematical model and quantitative indicators, the present invention can more scientifically adjust the drilling parameters, and by adjusting the parameter values in the formula, the optimization of the drilling plan can be achieved, improving the efficiency and benefit of oil extraction.

[0069] 3. The present invention constructs an effective cyclic feedback mechanism. Specifically, when the cost-benefit analysis value ZXY is lower than the expected cost benefit ZXY0, the production capacity and efficiency can be adjusted according to the feedback result, and recalculation and analysis can be carried out again. Through multiple iterations and optimizations, the optimal drilling plan can be gradually approached, and the optimal drilling plan can be quickly determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 is the method flow chart of the optimal drilling plan determination method and system for this oil extraction;

[0071] Figure 2 is the overall structure schematic diagram of the optimal drilling plan determination method and system for this oil extraction;

[0072] Figure 3 is the structure schematic diagram of the plan evaluation and analysis module of the present invention;

[0073] Figure 4 is the schematic diagram of the covered costs of the total cost ZCB in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0074] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0075] Regarding the method and system for determining the optimal drilling plan for oil extraction, it is different from the existing methods and systems for determining drilling plans. The existing methods and systems for determining drilling plans often rely on empirical judgment and qualitative analysis during formulation, lacking precise mathematical models and quantitative indicators to guide decision-making. This leads to difficulties in ensuring the economy, efficiency, and benefits of drilling plans, and there are often problems of resource waste and cost overruns. However, this algorithm unit has the beneficial effects of quantitative analysis, scientific parameter adjustment, and continuous optimization through cyclic feedback. This not only provides an accurate data basis but also promotes the overall optimization and continuous improvement of drilling operations.

[0076] Example 1. Please refer to Figures 1 to 4 , this example provides a method for determining the optimal drilling plan for oil extraction, including a method for estimating initial production capacity, optimizing drilling efficiency based on production capacity, and analyzing comprehensive cost-benefit to adjust and determine the optimal drilling plan;

[0077] It includes a data exploration and collection module, a plan evaluation and analysis module, an adjustment and feedback module, and an implementation plan module;

[0078] The specific determination method is as follows:

[0079] Data exploration and collection module: Responsible for collecting and inputting the geological exploration, cost, and market oil price conditions related to the drilling plan;

[0080] Plan evaluation and analysis module: Responsible for sequentially calculating and outputting the initial production capacity estimation value CN, drilling efficiency value XL, and cost-benefit analysis value ZXY;

[0081] Adjustment and feedback module: Responsible for optimizing the production capacity and efficiency of the current drilling plan based on the result of the cost-benefit analysis value ZXY;

[0082] Implementation plan module: Responsible for implementing according to the adjusted and determined drilling plan;

[0083] Among them, the plan evaluation and analysis module includes a unit reflecting the initial production capacity of the drilling plan, a unit reflecting the efficiency and effect of drilling operations, and a unit comprehensively reflecting the economy and benefits of the drilling plan;

[0084] The equipment used by the data exploration and collection module includes geological exploration equipment, data collection equipment, and storage equipment;

[0085] The equipment used by the plan evaluation and analysis module includes computing and analysis equipment, geological exploration equipment, and storage equipment;

[0086] The equipment used by the adjustment and feedback module includes data automation adjustment software;

[0087] The equipment used by the implementation plan module includes drilling equipment.

[0088] In this embodiment, a system for determining the optimal drilling plan for oil extraction is provided, including a data exploration and acquisition module, a plan evaluation and analysis module, an adjustment and feedback module, and an implementation plan module.

[0089] In this embodiment, the system forms the core of determining the optimal drilling plan through the mutual cooperation of three algorithm units, combining the calculation results of CN, XL, and ZXY. Specifically, CN is the initial production capacity estimation value. By estimating the initial production capacity based on the drilling depth SD and the reservoir thickness SH, and considering the influence of the drilling cost CB and the operating cost CF at the same time, it provides the basic data for the efficiency optimization of subsequent drilling and the analysis of cost-effectiveness. XL is the drilling efficiency value, which comprehensively reflects the efficiency and effect of the drilling operation. By optimizing the drilling efficiency, oil can be extracted more efficiently, thereby reducing the cost per unit of production and improving economic benefits. ZXY is the cost-benefit analysis value, which reflects the economy and profitability of the drilling plan. By comparing the cost-benefit analysis value ZXY with the expected cost-benefit ZXY0, it can be judged whether the current drilling plan is economically feasible. If the cost-benefit analysis value ZXY is higher than the expected value, it means that the drilling plan is economically feasible and can be further implemented. If the cost-benefit analysis value ZXY is lower than the expected value, the drilling parameters need to be adjusted and the drilling plan needs to be optimized to improve the comprehensive cost-benefit. Moreover, the calculation result of ZXY can also affect the calculation of CN and XL, making the three algorithms of this system have a high degree of relevance and entanglement. By adjusting the parameters in the formula, optimizing the drilling efficiency, and comprehensively considering the cost-benefit factors, a more scientific and reasonable drilling plan can be formulated and determined, improving the efficiency and benefits of oil extraction.

[0090] Please refer to Figures 1 to 4 , the calculation formula for reflecting the initial production capacity unit of the drilling plan is as follows:

[0091]

[0092] Among them:

[0093] CN is the initial production capacity estimation value, in barrels per day;

[0094] SD is the drilling depth, in meters;

[0095] SH is the reservoir thickness, in meters, and SH reflects the thickness of the rock layer containing hydrocarbon resources;

[0096] CB is the drilling cost, in ten thousand yuan per day, and CB reflects all the costs directly related to the drilling operation, specifically including the rental and purchase costs of drilling equipment, the cost of drilling fluid, and the wages of drilling personnel;

[0097] CF is the operating cost, in ten thousand yuan per day, and CF reflects the costs incurred to maintain the normal production of the oil well after the drilling operation is completed, specifically including the daily maintenance costs of the oil well, personnel salaries, electricity costs, and water treatment costs.

[0098] In this embodiment: First, in this algorithm unit The calculation part represents the square root of the product of the drilling depth SD and the reservoir thickness SH, aiming to measure the potential amount of exploitable resources in the reservoir. The deeper the drilling depth SD and the greater the reservoir thickness SH, usually the more oil resources can be exploited. In the unit reflecting the initial production capacity of the drilling plan, The calculation part appears as the first item and is the main component of the initial production capacity estimate CN. It reflects the potential production capacity of the reservoir and is one of the key factors in evaluating the economic benefits of the drilling operation;

[0099] The calculation part aims to measure the drilling cost CB under the unit operating cost CF. By dividing the drilling cost CB by the operating cost CF, an index representing cost efficiency can be obtained, and this index reflects the level of the drilling cost CB under the given operating cost CF, thus helping to evaluate the economy of the drilling operation. In the unit reflecting the initial production capacity of the drilling plan, The calculation part appears as a subtraction item, meaning a higher cost efficiency, that is, a smaller value will increase the initial production capacity estimate CN. This is because, under other unchanged conditions, a lower cost efficiency means that the drilling operation is more economically feasible and may thus bring higher production capacity;

[0100] The initial production capacity estimate CN calculated by this algorithm through the unit reflecting the initial production capacity of the drilling plan provides a solid data basis for subsequent optimization work. The accuracy of this benchmark data is directly related to the accuracy of the calculation formulas of the subsequent unit reflecting the drilling operation efficiency and effect and the unit comprehensively reflecting the economy and benefits of the drilling plan. Only when the initial production capacity estimate CN is accurate enough can the subsequent optimization work achieve the expected results;

[0101] While estimating the production capacity, the unit reflecting the initial production capacity of the drilling plan incorporates the considerations of the drilling cost CB and the operating cost CF, which reflects the comprehensiveness and forward-looking nature in formulating the drilling plan. Therefore, not only the maximization of production capacity should be pursued, but also cost control should be taken into account to achieve the maximization of economic benefits;

[0102] The drilling depth SD and the reservoir thickness SH in the unit reflecting the initial production capacity of the drilling plan are two key parameters. By adjusting these two parameters, the production capacity can be flexibly adjusted according to the actual situation and market demand. This flexibility can better respond to market changes and formulate a drilling plan that better meets market demand.

[0103] Please refer to Figures 1 to 4 , and the calculation formula for the unit reflecting the efficiency and effect of drilling operations is as follows:

[0104]

[0105] Where:

[0106] XL is the drilling efficiency value;

[0107] X is the drilling efficiency coefficient;

[0108] SL is the drilling rate, in meters per day;

[0109] CN max is the maximum production capacity, in barrels per day;

[0110] W is the reservoir stability coefficient;

[0111] The calculation formula for the drilling efficiency coefficient X is as follows:

[0112]

[0113] XL i is the drilling efficiency value of the i-th, reflecting the efficiency of different drilling operations;

[0114] N is the total amount of drilling operations;

[0115] SN is the number of years in use;

[0116] ZN is the total expected service life;

[0117] The number of years in use SN and the total expected service life ZN respectively reflect the number of years in use and the expected service life after the i-th drilling efficiency value XL of the same drilling equipment for the total amount of drilling operations N i ;

[0118] The calculation formula for the drilling rate SL is as follows:

[0119] SL = SD / T;

[0120] T is the drilling cycle;

[0121] The reservoir stability coefficient W is determined based on three known aspects of geological exploration data, logging data, and the physical properties of the reservoir. Specifically, the calculation formula is as follows:

[0122] W = A × a + B × b + C × c;

[0123] A, B, and C respectively reflect the evaluation values of geological exploration data, logging data, and the physical properties of the reservoir;

[0124] a, b, and c respectively reflect the weights of three aspects: geological exploration data, logging data, and the physical properties of the reservoir.

[0125] In this embodiment, first, the "CN + X × SL" calculation part adds the initial production capacity estimate CN to the product of the drilling efficiency coefficient X and the drilling rate SL, aiming to reflect the improvement effect of drilling efficiency on production capacity. The higher the drilling efficiency coefficient X and the faster the drilling rate SL, generally, it means the higher the efficiency of the drilling operation, thus bringing higher production capacity. In the unit reflecting the drilling operation efficiency and effect, the "CN + X × SL" calculation part appears as an additive term and is an important part of the optimized drilling efficiency value XL. It reflects the potential improvement space of production capacity after considering the drilling efficiency factor.

[0126] The calculation part aims to measure the cost of additional drilling due to the production capacity not reaching the maximum production capacity CN max by multiplying the drilling cost CB by and then an indicator representing the increased cost due to insufficient production capacity can be obtained. This indicator reflects the increase in the drilling cost CB under a given production capacity. And in the unit reflecting the drilling operation efficiency and effect, the calculation part appears as a subtractive term, meaning that a higher production capacity, approaching the maximum production capacity CN max will reduce the cost of additional drilling, thereby increasing the optimized drilling efficiency value XL;

[0127] The calculation part aims to measure the operating cost CF per unit of reservoir stability and thickness. By multiplying the operating cost CF by the quotient of the drilling depth SD divided by the sum of the reservoir thickness SH and the reservoir stability coefficient W, an indicator representing the relative magnitude of the operating cost CF after considering the reservoir stability and thickness factors can be obtained. This indicator reflects the change in the operating cost CF under given reservoir conditions. In the unit reflecting the drilling operation efficiency and effect, the calculation part appears as a subtractive term, meaning that higher reservoir stability and thickness will reduce the unit operating cost CF, thereby increasing the optimized drilling efficiency value XL;

[0128] This algorithm unit can more accurately grasp the progress of the drilling operation by optimizing the drilling efficiency value XL. This accuracy helps to promptly discover problems and take corresponding measures, thus improving the drilling efficiency. At the same time, the increase in the drilling efficiency value XL also means the reduction of the drilling cost CB and the increase in production capacity, thereby bringing greater economic benefits;

[0129] The reservoir stability coefficient W in the unit reflecting the efficiency and effect of drilling operations reflects the emphasis on reservoir protection. When formulating a drilling plan, it is necessary to fully consider the stability of the reservoir to avoid damaging the reservoir due to drilling operations. This awareness of protection not only helps ensure the smooth progress of subsequent exploitation work but also extends the service life of the reservoir and improves the long-term economic benefits of the enterprise;

[0130] Each parameter in the unit reflecting the efficiency and effect of drilling operations can be adjusted according to the actual situation. This flexibility enables the formulation of a more practical drilling plan based on different geological conditions and market demands. At the same time, by continuously adjusting and optimizing these parameters, it is possible to gradually approach the optimal drilling plan and maximize the exploitation efficiency and economic benefits.

[0131] Please refer to Figures 1 to 4 , the calculation formula for the unit comprehensively reflecting the economy and benefits of the drilling plan is as follows:

[0132]

[0133] Where:

[0134] ZXY is the cost-benefit analysis value, in ten thousand yuan per day;

[0135] YJ is the oil price, in ten thousand yuan per barrel;

[0136] ZCB is the total cost, including the drilling cost CB, operating cost CF, equipment purchase cost, land lease cost, and environmental protection cost;

[0137] XL max is the maximum value of drilling efficiency.

[0138] In this embodiment, the calculation part of "XL×YJ" in this algorithm unit is first designed to measure the revenue brought by the optimized drilling efficiency value XL. By multiplying the optimized drilling efficiency value XL by the oil price YJ, an indicator representing the increased revenue due to the improvement of drilling efficiency can be obtained. This indicator reflects the positive impact of the improvement of drilling efficiency on economic benefits under the given oil price YJ. In the unit reflecting the efficiency and effect of drilling operations, the calculation part of "XL×YJ" is an important part of the cost-benefit analysis value ZXY, which reflects the increased revenue obtained after considering the factor of the improvement of drilling efficiency;

[0139] The calculation part is designed to measure the additional cost caused by the drilling efficiency not reaching the maximum value of drilling efficiency XL max and by multiplying the total cost ZCB by An index representing the increased cost due to insufficient drilling efficiency can be obtained. This index reflects the increase in the total cost ZCB at a given drilling efficiency. In the unit reflecting the drilling operation efficiency and effect, The calculation part appears as a subtraction item, meaning that a higher drilling efficiency, i.e., when approaching the optimal drilling efficiency value, will reduce the total additional cost, thereby increasing the cost-benefit analysis value ZXY;

[0140] The calculation part may be intended to comprehensively consider the influence of the drilling depth SD, the optimized drilling efficiency value XL, the reservoir thickness CH, and the initial production capacity estimation value CN on the operating cost CF. This calculation part attempts to reflect the relative magnitude of the operating cost CF after considering the drilling depth SD, the drilling efficiency value XL, and the reservoir conditions. In the unit reflecting the drilling operation efficiency and effect, The calculation part appears as a subtraction item, and its specific influence depends on the relative magnitudes of various factors. The complexity and non-intuitiveness of this expression mean that it requires more in-depth analysis to understand its specific influence on the cost-benefit analysis value ZXY;

[0141] In this algorithm unit, by comparing the cost-benefit analysis value ZXY with the cost expected benefit ZXY0, it is possible to scientifically judge whether the current drilling plan is economically feasible. This judgment helps to avoid blind investment and ensure the economy and efficiency of the drilling plan. At the same time, when the cost-benefit analysis value ZXY is lower than the cost expected benefit ZXY0, problems can be discovered in a timely manner and corresponding measures can be taken for adjustment to ensure the smooth implementation of the drilling plan;

[0142] The result value of the unit reflecting the drilling operation efficiency and effect, the cost-benefit analysis value ZXY, can be used as a feedback signal, and by adjusting the drilling parameters, it can cyclically affect the unit reflecting the initial production capacity of the drilling plan and the unit reflecting the drilling operation efficiency and effect. This cyclic feedback mechanism can continuously optimize and adjust the drilling plan to approach the optimal drilling plan. This continuous optimization process not only helps to improve the mining efficiency and economic benefits but also enhances the market competitiveness, thereby achieving the maximization of economic benefits.

[0143] Example 2, please refer to Figures 1 to 4 , the optimization and adjustment based on the cost-benefit analysis value ZXY are as follows:

[0144] First, a cost expected benefit ZXY0 is set before each drilling operation plan;

[0145] If the cost-benefit analysis value ZXY is higher than the cost expected benefit ZXY0, it indicates that the current drilling plan is economically feasible, and the drilling plan is determined and implemented according to the parameters in the current plan;

[0146] If the cost-benefit analysis value ZXY is lower than the expected cost benefit ZXY0, it indicates that the current drilling plan is economically deficient. When optimizing the production capacity and efficiency, the specific methods are as follows:

[0147] When the geological exploration data shows that the reservoir is shallow and deep, the drilling depth SD needs to be increased and decreased;

[0148] When the drilling efficiency value XL is lower than the drilling efficiency value XL of the previous drilling plan, the drilling parameters need to be optimized;

[0149] When the oil well operation data shows that the energy consumption is high and the oil production efficiency is low under the current operation mode, the operation mode needs to be improved.

[0150] In this embodiment, when the cost-benefit analysis value ZXY is lower than the expected cost benefit ZXY0, it is necessary to adjust the production capacity and efficiency according to the feedback results. These adjustments often involve parameters such as the drilling depth SD and the reservoir thickness SH. By adjusting these parameters and substituting them back into the initial production capacity unit reflecting the drilling plan for calculation, a new initial production capacity estimate CN can be obtained, which provides basic data for subsequent optimization work. The cyclic influence of the unit reflecting the drilling operation efficiency and effect on the unit reflecting the initial production capacity of the drilling plan makes the whole system form a closed loop. In this closed loop, each formula depends on and influences each other, jointly promoting the continuous optimization of the drilling plan. This cyclic feedback mechanism helps to continuously approach the optimal drilling plan, improve the production efficiency and economic benefits. In addition, due to the cyclic influence of the unit reflecting the drilling operation efficiency and effect on the unit reflecting the initial production capacity of the drilling plan, the whole system can adjust the drilling plan more flexibly in the face of market changes and geological condition changes, and can adjust the parameters and recalculate the values of each formula in a timely manner according to the actual situation, so as to formulate a drilling plan that better meets the market demand;

[0151] Among them, for the beneficial effect of adjusting the drilling depth SD, by reasonably adjusting the drilling depth SD, it can match the reservoir distribution and reduce unnecessary drilling costs CB. When the reservoir is relatively shallow, reducing the drilling depth SD can directly reduce the cost of drilling operations. In the case of high oil price YJ and rich reservoir resources, appropriately increasing the drilling depth SD can obtain more oil resources, thus improving the overall income of the project. And by accurately controlling the drilling depth SD, it can effectively control the cost while ensuring the production capacity, thereby enhancing the economic benefits of drilling operations;

[0152] Regarding the beneficial effects of optimizing drilling parameters, by adjusting the drilling rate SL and the drilling efficiency coefficient X parameter, the efficiency of the drilling operation can be improved, the drilling cycle can be shortened, thereby saving time and cost. When the equipment performance is improved, by adjusting the drilling parameters, the performance advantages of the equipment can be fully utilized, and the overall efficiency of the drilling operation can be improved. Moreover, optimizing the drilling parameters can not only improve the drilling efficiency, but also indirectly increase the production capacity and improve the overall revenue of the project by reducing the downtime due to failures;

[0153] Regarding the beneficial effects of improving the operation mode, by adopting more advanced oil production technologies and optimizing the operation process measures, the energy consumption during the drilling operation can be reduced, thereby reducing the operating cost. Introducing the advanced technology of the automated control system can optimize the oil well operation and improve the oil production efficiency, thereby increasing the production capacity. Moreover, by improving the operation mode, not only can the energy consumption and cost be reduced, but also the oil production efficiency and production capacity can be improved, thus comprehensively enhancing the overall economic benefits of the drilling operation;

[0154] In summary, the initial production capacity unit reflecting the drilling plan, the unit reflecting the drilling operation efficiency and effect, and the unit comprehensively reflecting the economy and benefits of the drilling plan all play important roles in the method and system for determining the optimal drilling plan in oil exploitation, and they rely on and influence each other. By making full use of the beneficial effects of these formulas and the cycle feedback mechanism, the drilling plan can be continuously optimized, the exploitation efficiency and economic benefits can be improved. Moreover, the beneficial effects of adjusting the drilling depth SD, optimizing the drilling parameters, and improving the operation mode are mainly reflected in cost savings, resource maximization, efficiency improvement, equipment performance maximization, production capacity increase, and overall economic benefit improvement. These beneficial effects act together on the drilling plan to make it more economically feasible and profitable.

[0155] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it is understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for determining an optimal drilling plan for oil production, characterized in that: It includes estimating initial production capacity, optimizing drilling efficiency based on production capacity, analyzing comprehensive cost-effectiveness, and then adjusting and determining the optimal drilling plan; It includes data exploration and collection module, plan evaluation and analysis module, adjustment and feedback module and implementation plan module; The specific determination method is as follows: Data exploration and acquisition module: responsible for collecting and inputting geological exploration, cost, and market oil price information related to the drilling plan; Planning evaluation and analysis module: responsible for calculating and outputting the initial capacity estimation value CN, drilling efficiency value XL, and cost-benefit analysis value ZXY in sequence; Adjustment and feedback module: responsible for optimizing the production capacity and efficiency of the current drilling plan based on the result of the cost-benefit analysis value ZXY; Implementation plan module: responsible for implementation according to the adjusted and confirmed drilling plan; The plan evaluation and analysis module includes a unit reflecting the initial production capacity of the drilling plan, a unit reflecting the efficiency and effect of the drilling operation, and a unit comprehensively reflecting the economy and benefit of the drilling plan.

2. The method for determining an optimal drilling plan for oil production according to claim 1, characterized in that: The calculation formula reflecting the initial production capacity unit of the drilling plan is as follows: in: CN is the initial production capacity estimate in barrels per day; SD is the drilling depth in meters; SH is the reservoir thickness, in meters, and SH reflects the thickness of the rock layer containing hydrocarbon resources; CB is the drilling cost, in units of 10,000 yuan per day, and CB reflects all costs directly related to drilling operations, including the rental and purchase costs of drilling equipment, the cost of drilling fluid, and the wages of drilling personnel; CF is the operating cost, measured in RMB 10,000 per day, and reflects the costs incurred after the drilling operation is completed to maintain normal production of the oil well, specifically including daily maintenance costs of the oil well, employee salaries, electricity costs, and water treatment costs.

3. The method for determining an optimal drilling plan for oil production according to claim 2, characterized in that: The calculation formula reflecting the drilling operation efficiency and effect unit is as follows: in: XL is the drilling efficiency value; X is the drilling efficiency coefficient; SL is the drilling rate in meters per day; CN max is the maximum production capacity in barrels per day; W is the reservoir stability coefficient.

4. The method for determining an optimal drilling plan for oil production according to claim 3, characterized in that: The calculation formula of the drilling efficiency coefficient X is as follows: XL i is the i-th drilling efficiency value, reflecting the efficiency of different drilling operations; N is the total amount of drilling operations; SN is the number of years in use; ZN is the total estimated useful life; The service life SN and the estimated service life ZN respectively reflect the i-th drilling efficiency value XL of the same drilling equipment in the total drilling operation N. i the subsequent years of use and estimated useful life; The calculation formula of the drilling rate SL is as follows: SL = SD / T; T is the drilling cycle; The reservoir stability coefficient W is determined based on the known survey aspects of geological exploration data, well logging data and physical properties of the reservoir. The specific calculation formula is as follows: W = A × a + B × b + C × c; A, B, and C reflect the evaluation values ​​of geological exploration data, well logging data, and physical properties of the reservoir, respectively; a, b, and c reflect the weights of geological exploration data, well logging data, and physical properties of the reservoir, respectively.

5. The method for determining an optimal drilling plan for oil production according to claim 3, characterized in that: The calculation formula that fully reflects the economic and benefit units of the drilling plan is as follows: in: ZXY is the cost-benefit analysis value, in units of 10,000 yuan / day; YJ is the oil price, in ten thousand yuan per barrel; ZCB is the total cost, including drilling cost CB, operating cost CF, equipment purchase cost, land lease cost, and environmental protection cost; XL max The maximum drilling efficiency.

6. The method for determining an optimal drilling plan for oil production according to claim 5, characterized in that: The optimization adjustment based on the cost-benefit analysis value ZXY is as follows: First, each drilling operation has a cost-expected benefit ZXY0 set before planning; If the cost-benefit analysis value ZXY is higher than the expected cost benefit ZXY0, it reflects that the current drilling plan is economically feasible, and the drilling plan should be determined and implemented based on the parameters in the current plan; If the cost-benefit analysis value ZXY is lower than the expected cost benefit ZXY0, it means that the current drilling plan is economically deficient and the production capacity and efficiency should be optimized as follows: When geological exploration data show that the reservoir is shallow or deep, the drilling depth SD needs to be increased or decreased; When the drilling efficiency value XL is lower than the drilling efficiency value XL of the previous drilling plan, the drilling parameters need to be optimized; When the oil well operation data show that the current operation mode has high energy consumption and low oil production efficiency, the operation mode needs to be improved.

7. The method for determining an optimal drilling plan for oil production according to claim 1, characterized in that: The data exploration and acquisition module includes geological exploration equipment, data acquisition equipment, and storage equipment; The plan evaluation and analysis module includes computing and analysis equipment, geological exploration equipment, and storage equipment; The adjustment and feedback module includes data automatic adjustment software; The implementation plan module includes drilling equipment.

8. The optimal drilling plan determination system used in the method for determining the optimal drilling plan for oil production according to claim 1, characterized in that: It includes data exploration and collection module, plan evaluation and analysis module, adjustment and feedback module and implementation plan module; The data exploration and acquisition module is used to collect and input geological exploration, cost, and market oil price information related to the drilling plan; The plan evaluation and analysis module is used to calculate and output the initial production capacity estimation value CN, the drilling efficiency value XL, and the cost-benefit analysis value ZXY; The adjustment and feedback module is used to optimize and adjust the production capacity and efficiency of the current drilling plan; The plan implementation module is used to implement the currently determined drilling plan.

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