Offshore oil and gas exploration planning optimization method and device

Abstract

The invention relates to the field of oil-gas exploration strategy planning, and discloses an offshore oil-gas exploration planning optimization method and device. The method can divide a target research area into a plurality of sub-areas according to historical oil-gas exploration information, determine N trapped oil-gas potential volumes of each sub-area based on N preset trapped geological success rates, set a first deployment priority of each trapped oil-gas potential volume, and set a second deployment priority of each trapped oil-gas potential volume according to an oil-gas exploration planning index. Dividing the plurality of sub-regions into a first-class region group, a second-class region group and a third-class region group of which the second deployment priorities are sequentially reduced, and according to the second deployment priority of each region group and the first deployment priorities of different trapped oil and gas potential quantities in each region group, determining the trapped oil and gas potential quantities in each region group; and deploying each trapped oil-gas potential quantity to an oil-gas exploration plan of the target research area one by one until a preset planning target is met. According to the invention, the oil-gas exploration planning process is refined under the condition that the preset planning target is realized in a hierarchical classification mode.

Description

Technical Field

[0001] The present invention relates to the field of oil and gas exploration strategic planning, and in particular to a method and device for optimizing offshore oil and gas exploration planning. Background Art

[0002] Oil and gas exploration is an exploration of risks and a search for the unknown. Oil and gas exploration planning is a programmatic document guiding oil and gas exploration work, which is related to the benefits and success of exploration work.

[0003] The planning related to proved oil and gas reserves is the basis of oil and gas exploration planning, which determines the policy, workload and investment of oil and gas exploration. The planning related to proved oil and gas reserves in related technologies generally relies on software prediction or expert decision-making, and the degree of refinement is insufficient. Summary of the invention

[0004] The present invention provides an offshore oil and gas exploration planning optimization method and device, which are used to solve the defect that the planning related to proved oil and gas reserves in the related technology generally relies on software prediction or expert decision-making and is not refined enough. The oil and gas exploration planning process can be refined while achieving the preset planning goals.

[0005] In a first aspect, the present invention provides a method for optimizing offshore oil and gas exploration planning, comprising:

[0006] Dividing the target study area into a plurality of sub-areas according to historical oil and gas exploration information of the target study area;

[0007] Based on N preset trap geological success rates, determining N trapped oil and gas potentials of each of the sub-areas; wherein the N trapped oil and gas potentials of the sub-areas include the unproven oil and gas potential of the sub-areas at each of the preset trap geological success rates; wherein N is an integer greater than 1;

[0008] According to the preset trap geological success rate corresponding to each of the trapped oil and gas potentials, a first deployment priority of each of the trapped oil and gas potentials is set; wherein the greater the preset trap geological success rate corresponding to the trapped oil and gas potential, the higher the first deployment priority of the trapped oil and gas potential;

[0009] Based on the order of the first deployment priority from high to low, each of the trapped oil and gas potentials is deployed one by one into the oil and gas exploration plan of the target research area until the preset planning target is met.

[0010] Optionally, the step of deploying each of the trapped oil and gas potentials one by one into the oil and gas exploration plan of the target research area based on the first deployment priority from high to low order until a preset planning target is met includes:

[0011] Predicting the proven oil and gas reserves of the target study area and each of the sub-areas to obtain the overall proven oil and gas reserves of the target study area and the predicted proven oil and gas reserves of each of the sub-areas;

[0012] The preset planning target is set according to the overall proved oil and gas reserves, and the preset planning target is that the total value of the trapped oil and gas potential deployed in the oil and gas exploration plan is equal to the overall proved oil and gas reserves; and a constraint condition is set according to the predicted proved oil and gas reserves of each sub-region, and the constraint condition is that the planned proved oil and gas reserves of any of the sub-regions is not greater than the predicted proved oil and gas reserves of the corresponding sub-region, and the planned proved oil and gas reserves of the sub-region is the sum of the corresponding N trapped oil and gas potentials deployed in the oil and gas exploration plan;

[0013] Under the condition that the constraint condition is met, each of the trapped oil and gas potentials is deployed one by one into the oil and gas exploration plan based on the order of the first deployment priority from high to low until the preset planning target is met.

[0014] Optionally, the N trapped oil and gas potentials in each of the sub-areas include a first-level trapped oil and gas potential, a second-level trapped oil and gas potential, and a third-level trapped oil and gas potential in descending order of first deployment priority;

[0015] The step of deploying each of the trapped oil and gas potentials into the oil and gas exploration plan one by one based on the order of the first deployment priority from high to low when the constraint condition is satisfied, until the preset planning target is satisfied, includes:

[0016] Under the condition that the constraint conditions are met, the primary trapped oil and gas potential of each of the sub-areas is preferentially deployed one by one into the oil and gas exploration plan, and then the secondary trapped oil and gas potential of each of the sub-areas is deployed one by one into the oil and gas exploration plan, and finally the tertiary trapped oil and gas potential of each of the sub-areas is deployed one by one into the oil and gas exploration plan until the preset planning target is met.

[0017] Optionally, determining the oil and gas potential of N traps in the sub-area based on N preset trap geological success rates includes:

[0018] For any of the preset trap geological success rates, at least one target trap having a trap geological success rate equal to the preset trap geological success rate is determined among the multiple traps in the sub-area, the unproven oil and gas potential of the sub-area in each of the target traps is determined, the sum of the unproven oil and gas potential of the sub-area in each of the target traps is calculated, and the sum is determined as the oil and gas potential of the corresponding trap.

[0019] Optionally, the target research area is divided into a plurality of sub-areas according to the historical oil and gas exploration information of the target research area, including:

[0020] In the target research area, oil and gas reservoirs, prospective traps and related source rocks with a common history of oil and gas generation, migration and accumulation are integrally determined as one of the sub-areas until the multiple sub-areas are obtained.

[0021] Optionally, when the constraint condition is met, before the primary trapped oil and gas potential of each sub-area is preferentially deployed one by one into the oil and gas exploration plan, the method further includes:

[0022] Obtaining oil and gas exploration planning indicators for each of the sub-regions;

[0023] According to the oil and gas exploration planning index of each of the sub-regions and the preset multiple index intervals, the multiple sub-regions are divided into multiple regional groups corresponding to the multiple index intervals one by one; wherein each of the regional groups includes at least one of the sub-regions;

[0024] The second deployment priority of each of the regional groups is set according to the indicator interval corresponding to the regional group; wherein, the larger the indicator interval corresponding to the regional group is, the higher the second deployment priority of the regional group is.

[0025] Optionally, the multiple area groups include a first type of area group, a second type of area group, and a third type of area group, with the second deployment priorities decreasing in sequence;

[0026] In the case where the constraint conditions are met, the primary trapped oil and gas potential of each sub-area is preferentially deployed one by one into the oil and gas exploration plan, and then the secondary trapped oil and gas potential of each sub-area is deployed one by one into the oil and gas exploration plan, and finally the tertiary trapped oil and gas potential of each sub-area is deployed one by one into the oil and gas exploration plan until the preset planning target is met, including:

[0027] In the case where the constraint condition is met, each of the first-level trapped oil and gas potentials in the first-category regional grouping is preferentially deployed one by one into the oil and gas exploration plan, and then each of the first-level trapped oil and gas potentials in the second-category regional grouping is deployed one by one into the oil and gas exploration plan, and then each of the first-level trapped oil and gas potentials in the third-category regional grouping is deployed one by one into the oil and gas exploration plan, and then each of the second-level trapped oil and gas potentials in the first-category regional grouping is deployed one by one into the oil and gas exploration plan, and then each of the second-level trapped oil and gas potentials in the second-category regional grouping is deployed one by one into the oil and gas exploration plan, until the preset planning target is met.

[0028] Optionally, the oil and gas exploration planning indicators include at least one of the unproven oil and gas potential, exploration activity and exploration well effectiveness.

[0029] Optionally, after deploying each of the trapped oil and gas potentials one by one into the oil and gas exploration plan of the target research area in the order from high to low based on the first deployment priority until the preset planning target is met, the method further includes:

[0030] Determine the planned oil and gas reserves, exploration well results and single well cost of each sub-area;

[0031] For any of the sub-regions, the planned oil and gas reserves of the sub-region are divided by the exploration well performance of the sub-region to obtain the exploration well workload of the sub-region, and the exploration well workload of the sub-region is multiplied by the single well cost of the sub-region to obtain the exploration well investment of the sub-region;

[0032] Calculating the sum of the exploration well workload of each of the sub-areas and using it as the exploration well workload planning value of the target research area; and calculating the sum of the exploration well investment of each of the sub-areas and using it as the exploration well investment planning value of the target research area;

[0033] The exploration well workload, exploration well investment of each sub-area, the exploration well workload planning value and the exploration well investment planning value of the target research area are deployed into the oil and gas exploration plan.

[0034] In a second aspect, the present invention provides an offshore oil and gas exploration planning and optimization device, comprising:

[0035] A division unit, used for dividing the target study area into a plurality of sub-areas according to the historical oil and gas exploration information of the target study area;

[0036] A determination unit, configured to determine N trapped oil and gas potentials of each of the sub-regions based on N preset trap geological success rates; wherein the N trapped oil and gas potentials of the sub-regions include the unproven oil and gas potential of the sub-region under each of the preset trap geological success rates; wherein N is an integer greater than 1;

[0037] A first setting unit is used to set a first deployment priority of each of the trapped oil and gas potentials according to the preset trap geological success rate corresponding to each of the trapped oil and gas potentials; wherein, the greater the preset trap geological success rate corresponding to the trapped oil and gas potential, the higher the first deployment priority of the trapped oil and gas potential;

[0038] A first deployment unit is used to deploy each of the trapped oil and gas potentials one by one into the oil and gas exploration plan of the target research area based on the first deployment priority from high to low, until the preset planning target is met

[0039] The offshore oil and gas exploration planning optimization method and device provided by the present invention can divide the target study area into multiple sub-areas according to the historical oil and gas exploration information of the target study area, determine the N trapped oil and gas potentials of each sub-area based on the N preset trap geological success rates, set the first deployment priority of each trapped oil and gas potential according to the preset trap geological success rate corresponding to each trapped oil and gas potential, and deploy each trapped oil and gas potential one by one in the oil and gas exploration planning of the target study area based on the order of the first deployment priority from high to low until the preset planning target is met. The present invention can refine the oil and gas exploration planning process while achieving the preset planning target. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A flowchart of an offshore oil and gas exploration planning optimization method provided by an embodiment of the present invention;

[0042] Figure 2 An example table of trapped oil and gas potential under different deployment priorities of each sub-area provided in an embodiment of the present invention;

[0043] Figure 3 An example table of indicator intervals corresponding to each regional grouping provided in an embodiment of the present invention;

[0044] Figure 4 An annual oil and gas proven reserves planning table for oil and gas exploration planning provided by an embodiment of the present invention;

[0045] Figure 5 A schematic diagram of the structure of an offshore oil and gas exploration planning and optimization device provided by an embodiment of the present invention;

[0046] Figure 6 A schematic diagram of the structure of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In order to solve the problem that the planning related to proved oil and gas reserves in the related technology is generally based on software prediction or expert decision-making, and the degree of refinement is insufficient, the offshore oil and gas exploration planning preparation optimization method and device proposed in the present invention can divide the target study area into multiple sub-areas according to the historical oil and gas exploration information of the target study area, and determine the N trapped oil and gas potentials of each sub-area based on N preset closure geological success rates, and set the first deployment priority of each trapped oil and gas potential according to the preset closure geological success rate corresponding to each trapped oil and gas potential. Based on the order of the first deployment priority from high to low, each trapped oil and gas potential is deployed one by one in the oil and gas exploration planning of the target study area until the preset planning target is met. The present invention can refine the oil and gas exploration planning process while achieving the preset planning target.

[0049] Combine the following Figure 1-Figure 4 The present invention describes the offshore oil and gas exploration planning and optimization method.

[0050] like Figure 1 As shown, this embodiment proposes a first offshore oil and gas exploration planning optimization method, which may include the following steps:

[0051] S101. Divide the target study area into multiple sub-areas based on historical oil and gas exploration information of the target study area.

[0052] Among them, historical oil and gas exploration information can be the oil and gas exploration-related characteristic information obtained and recorded during the oil and gas exploration in the target study area during the historical period, such as information on oil and gas generation, migration and accumulation, and the proven reserves of oil and gas in each oil and gas reservoir, exploration activity and exploration well results.

[0053] Specifically, in this embodiment, some areas with the same characteristic information in the target study area can be combined as a sub-area according to the historical oil and gas exploration information of the target study area. It should be noted that the sub-area can be a continuous area in the target study area or a discontinuous area in the target study area.

[0054] Optionally, step S101 may include:

[0055] In the target study area, oil and gas reservoirs, prospective traps and related source rocks with a common history of oil and gas generation, migration and accumulation are identified as a sub-area as a whole until multiple sub-areas are obtained.

[0056] Specifically, a sub-region may include three major elements: source rocks, oil and gas migration pathways, and oil and gas reservoirs or traps. It should be noted that the sub-region in this embodiment may be referred to as an oil and gas convergence unit.

[0057] Optionally, this embodiment may also take a secondary structural unit of the oil and gas basin as a sub-region.

[0058] S102, based on N preset trap geological success rates, determining N trapped oil and gas potentials of each sub-region, wherein the N trapped oil and gas potentials of the sub-region include the unproven oil and gas potential of the sub-region under each preset trap geological success rate, wherein N is an integer greater than 1.

[0059] The preset trap geological success rate can be set by a technician according to actual conditions. The N preset trap geological success rates can be N different preset trap geological success rates.

[0060] Optionally, the preset closure geological success rate may be a closure geological success rate interval.

[0061] Optionally, the N preset trap geological success rates may be N non-overlapping trap geological success rate intervals. For example, the N preset trap geological success rates may be a trap geological success rate interval of 50% to 60%, a trap geological success rate interval of 60% to 80%, and a trap geological success rate interval greater than 80%.

[0062] Specifically, this embodiment can determine the undiscovered oil and gas potential of the sub-region at N preset trap geological success rates for any sub-region. It can be understood that the undiscovered oil and gas potential of the sub-region at each preset trap geological success rate is a trap oil and gas potential of the sub-region.

[0063] Optionally, based on N preset trap geological success rates, determining the oil and gas potential of N traps in the sub-area includes:

[0064] For any preset trap geological success rate, at least one target trap having a trap geological success rate equal to the preset trap geological success rate is determined among the multiple traps in the sub-region, the unproven oil and gas potential of the sub-region in each target trap is determined, the sum of the unproven oil and gas potential of the sub-region in each target trap is calculated, and the sum is determined as the oil and gas potential of a corresponding trap.

[0065] Specifically, each sub-region includes multiple traps. In this embodiment, when determining the oil and gas potential of N traps in a sub-region, for any preset trap geological success rate, all target traps with a trap geological success rate of the preset trap geological success rate can be determined from multiple traps in the sub-region, and then the oil and gas potential to be discovered of each target trap in the sub-region among all the target traps is determined, and the sum of the oil and gas potential to be discovered of each target trap is calculated, and the sum is determined as the oil and gas potential of the trap corresponding to the preset trap geological success rate.

[0066] S103. Setting a first deployment priority of each trapped oil and gas potential according to a preset trap geological success rate corresponding to each trapped oil and gas potential; wherein, the greater the preset trap geological success rate corresponding to the trapped oil and gas potential, the higher the first deployment priority of the trapped oil and gas potential.

[0067] Specifically, the first deployment priority of the trapped oil and gas potential may be a priority for deploying the trapped oil and gas potential into the oil and gas exploration plan.

[0068] Specifically, if the preset trap geological success rates corresponding to different trapped oil and gas potentials are the same, the first deployment priorities of the two trapped oil and gas potentials are the same. The greater the preset trap geological success rate corresponding to the trapped oil and gas potential, the greater the first deployment priority of the trapped oil and gas potential. The smaller the preset trap geological success rate corresponding to the trapped oil and gas potential, the smaller the first deployment priority of the trapped oil and gas potential.

[0069] Optionally, when the N preset closure geological success rates are N non-overlapping closure geological success rate intervals, the larger the closure geological success rate included in the closure geological success rate interval, the larger the closure geological success rate interval. For example, when the N preset closure geological success rates are respectively a closure geological success rate interval of 50% to 60%, a closure geological success rate interval of 60% to 80%, and a closure geological success rate interval greater than 80%, the closure geological success rate interval of 80% is greater than the closure geological success rate interval of 60% to 80%, and the closure geological success rate interval of 60% to 80% is greater than the closure geological success rate interval of 50% to 60%.

[0070] It can be understood that one preset trap geological success rate corresponds to one first deployment priority, N preset trap geological success rates correspond to N first deployment priorities, and the N trapped oil and gas potentials in each sub-area correspond to the above N preset trap geological success rates, so the N trapped oil and gas potentials in each sub-area include the N first deployment priorities. For example, when N is 3, and the N first deployment priorities are high priority, medium priority, and low priority, the N trapped oil and gas potentials in each sub-area include high priority, medium priority, and low priority trapped oil and gas potentials.

[0071] S104, deploying each trapped oil and gas potential one by one into the oil and gas exploration plan of the target study area based on the first deployment priority from high to low, until the preset planning target is met.

[0072] Optionally, the preset planning target may be that the total value of the deployed trapped oil and gas potential reaches a set target value, or may be that the number of deployed trapped oil and gas potential reaches a set number.

[0073] Specifically, this embodiment can deploy each trapped oil and gas potential to the oil and gas exploration plan of the target research area in the order of the first deployment priority of the trapped oil and gas potential from high to low, that is, the trapped oil and gas potential with a high first deployment priority is deployed to the oil and gas exploration plan first, and then the trapped oil and gas potential with a low first deployment priority is deployed to the oil and gas exploration plan. For example, when N is 3, and the N trapped oil and gas potentials in each sub-area include high-priority trapped oil and gas potentials, medium-priority trapped oil and gas potentials, and low-priority trapped oil and gas potentials, this embodiment first deploys all high-priority trapped oil and gas potentials one by one to the oil and gas exploration plan, then deploys all medium-priority trapped oil and gas potentials one by one to the oil and gas exploration plan, and finally deploys all low-priority trapped oil and gas potentials one by one to the oil and gas exploration plan until the preset planning target is met.

[0074] It should be noted that, for multiple trapped oil and gas potentials with the same first deployment priority, this embodiment does not limit the order in which the multiple trapped oil and gas potentials are deployed in the oil and gas exploration plan. For example, when deploying high-priority trapped oil and gas potentials in the oil and gas exploration plan, this embodiment does not limit the deployment order of the high-priority trapped oil and gas potentials in each sub-area.

[0075] It is understandable that in the process of deploying each trapped oil and gas potential one by one to the oil and gas exploration plan in this embodiment, if a preset planning target is met after a trapped oil and gas potential is deployed, the deployment of subsequent trapped oil and gas potentials can be stopped.

[0076] Optionally, step S104 may include:

[0077] Predict the proved oil and gas reserves of the target study area and each sub-area to obtain the overall proved oil and gas reserves of the target study area and the predicted proved oil and gas reserves of each sub-area;

[0078] A preset planning target is set according to the overall proved oil and gas reserves, and the preset planning target is that the total value of the trapped oil and gas potential deployed in the oil and gas exploration plan is equal to the overall proved oil and gas reserves; and a constraint condition is set according to the predicted proved oil and gas reserves of each sub-region, and the constraint condition is that the planned proved oil and gas reserves of any sub-region is not greater than the predicted proved oil and gas reserves of the corresponding sub-region, and the planned proved oil and gas reserves of the sub-region are the sum of the corresponding N trapped oil and gas potentials deployed in the oil and gas exploration plan;

[0079] Under the condition that the constraints are met, each trapped oil and gas potential is deployed one by one into the oil and gas exploration plan based on the first deployment priority from high to low until the preset planning target is met.

[0080] Specifically, this embodiment can use the life cycle method, random model method, proven rate method or reserve-production history fitting method to predict the proved oil and gas reserves of the sub-region and the overall proved oil and gas reserves of the target research area. The principle of selection is that for sub-regions with rich historical data on proven reserves, a method with a higher degree of fitting is preferred, and for sub-regions with less historical data, the proven rate method can be used.

[0081] The planned proved oil and gas reserves of the sub-region may be the sum of the N trapped oil and gas potentials in the sub-region that are deployed in the oil and gas exploration plan.

[0082] Specifically, in the constraint conditions of this embodiment, for any sub-region, the planned proved oil and gas reserves of the sub-region shall not be greater than the predicted proved oil and gas reserves of the sub-region.

[0083] It is understandable that in the process of deploying each trapped oil and gas potential one by one to the oil and gas exploration plan in this embodiment, if a preset planning target is met after a trapped oil and gas potential is deployed, the deployment of subsequent trapped oil and gas potentials can be stopped.

[0084] Optionally, the N trapped oil and gas potentials in each sub-area include a first-level trapped oil and gas potential, a second-level trapped oil and gas potential, and a third-level trapped oil and gas potential with first deployment priorities decreasing in sequence. In this case, the first deployment priority is level one, level two, or level three, and the priority levels of level one, level two, and level three decrease successively. In this case, under the condition that the constraints are met, each trapped oil and gas potential is deployed one by one in the oil and gas exploration plan based on the order of the first deployment priority from high to low until the preset planning objectives are met, including:

[0085] Under the condition of meeting the constraints, the first-level oil and gas potential of each sub-area is deployed into the oil and gas exploration plan one by one, and then the second-level oil and gas potential of each sub-area is deployed into the oil and gas exploration plan one by one, and finally the third-level oil and gas potential of each sub-area is deployed into the oil and gas exploration plan one by one until the preset planning goals are met.

[0086] In order to better illustrate the primary trap oil and gas potential, secondary trap oil and gas potential and tertiary trap oil and gas potential of the sub-area, this embodiment proposes Figure 2 , and combined with Figure 2 Provide explanation.

[0087] like Figure 2 As shown, the evaluation unit is a sub-region. This embodiment proposes the primary trap oil and gas potential, the secondary trap oil and gas potential and the tertiary trap oil and gas potential of the evaluation units 1 to 16, i.e., 16 sub-regions. The primary trap oil and gas potential, the secondary trap oil and gas potential and the tertiary trap oil and gas potential of each sub-region are the unproven oil and gas potentials calculated under the preset trap geological success rates of greater than 80%, 80% to 60%, and 50% to 60%, respectively.

[0088] Specifically, this embodiment can preferentially deploy all primary trapped oil and gas potentials into the oil and gas exploration plan one by one, then deploy all secondary trapped oil and gas potentials into the oil and gas exploration plan one by one, and finally deploy all tertiary trapped oil and gas potentials into the oil and gas exploration plan one by one.

[0089] The offshore oil and gas exploration planning optimization method proposed in this embodiment can divide the target study area into multiple sub-areas based on the historical oil and gas exploration information of the target study area, determine the N trapped oil and gas potentials of each sub-area based on the N preset trap geological success rates, set the first deployment priority of each trapped oil and gas potential based on the preset trap geological success rate corresponding to each trapped oil and gas potential, and deploy each trapped oil and gas potential one by one in the oil and gas exploration plan of the target study area based on the order of the first deployment priority from high to low until the preset planning target is met. This embodiment can refine the oil and gas exploration planning process, reduce the risk of oil and gas discovery, and enhance the scientific nature of the exploration plan while achieving the preset planning target.

[0090] based on Figure 1 This embodiment proposes a second offshore oil and gas exploration planning optimization method. Under the condition of satisfying the constraint conditions, the method may also include:

[0091] Obtain oil and gas exploration planning indicators for each sub-region;

[0092] According to the oil and gas exploration planning index of each sub-region and the preset multiple index intervals, the multiple sub-regions are divided into multiple regional groups corresponding to the multiple index intervals one by one; wherein each regional group includes at least one sub-region;

[0093] The second deployment priority of each regional group is set according to the indicator interval corresponding to the regional group; wherein, the larger the indicator interval corresponding to the regional group is, the higher the second deployment priority of the regional group is.

[0094] Optionally, the oil and gas exploration planning indicators include at least one of the unproven oil and gas potential, exploration activity and exploration well performance.

[0095] Among them, the undiscovered oil and gas potential = controlled reserves × reserve upgrade coefficient 1 + predicted reserves × reserve upgrade coefficient 2 + undrilled closed resources × resource upgrade coefficient.

[0096] Specifically, exploration activity = 0.5 × exploration well workload of each evaluation unit / total exploration well workload + 0.5 × number of oil and gas fields discovered in each evaluation unit / total number of oil and gas fields.

[0097] Specifically, exploration well effectiveness = proven oil and gas reserves / exploration well workload.

[0098] The second deployment priority may be a deployment priority of a regional group.

[0099] Optionally, the multiple area groups include a first type of area group, a second type of area group, and a third type of area group with the second deployment priorities decreasing in sequence.

[0100] Optionally, when the oil and gas exploration planning indicators include unproven oil and gas potential, exploration activity and exploration well effectiveness, this embodiment may divide the above-mentioned multiple sub-regions into three regional groups. Figure 3 As shown, the exploration planning parameters are oil and gas exploration planning indicators, and the first evaluation unit, the second evaluation unit and the third evaluation unit are the three regional groups divided in this embodiment. The first evaluation unit, the second evaluation unit and the third evaluation unit are the first regional group, the second regional group and the third regional group respectively. Among them, the unproven oil and gas potential of each sub-area in the first evaluation unit is greater than 150 million tons, the exploration activity is greater than 0.8, and the exploration well effect is between 2.4 and 5 million tons / well. The unproven oil and gas potential of each sub-area in the second evaluation unit is between 100 and 150 million tons, the exploration activity is between 0.6 and 0.8, and the exploration well effect is between 1.45 and 2.2 million tons / well. The unproven oil and gas potential of each sub-area in the third evaluation unit is less than 100 million tons, the exploration activity is less than 0.6, and the exploration well effect is between 1.2 and 2 million tons / well.

[0101] It is understandable that if Figure 3 As shown, the index intervals of the oil and gas exploration planning indicators in the first type of evaluation unit are all greater than those in the second type of evaluation unit, and the index intervals of the oil and gas exploration planning indicators in the second type of evaluation unit are all greater than those in the third type of evaluation unit. The deployment priority of the first type of evaluation unit can be higher than that of the second type of evaluation unit, and the deployment priority of the second type of evaluation unit can be higher than that of the third type of evaluation unit. Therefore, the second deployment priority of the first type of regional grouping, the second type of regional grouping, and the third type of regional grouping can be successively reduced.

[0102] Optionally, when the constraint conditions are met, the first-level trapped oil and gas potential of each sub-region is preferentially deployed one by one into the oil and gas exploration plan, and then the second-level trapped oil and gas potential of each sub-region is deployed one by one into the oil and gas exploration plan, and finally the third-level trapped oil and gas potential of each sub-region is deployed one by one into the oil and gas exploration plan, until the preset planning objectives are met, including:

[0103] Under the condition of satisfying the constraint conditions, each primary trap oil and gas potential in the first type of regional grouping is preferentially deployed one by one into the oil and gas exploration plan, and then each primary trap oil and gas potential in the second type of regional grouping is deployed one by one into the oil and gas exploration plan, and then each primary trap oil and gas potential in the third type of regional grouping is deployed one by one into the oil and gas exploration plan, and then each secondary trap oil and gas potential in the first type of regional grouping is deployed one by one into the oil and gas exploration plan, and then each secondary trap oil and gas potential in the second type of regional grouping is deployed one by one into the oil and gas exploration plan, until the preset planning objectives are met.

[0104] To better illustrate the execution process of the above steps, this embodiment Figure 2 and Figure 3 Based on Figure 4 Provide explanation.

[0105] like Figure 4 As shown, taking the 2025 oil and gas reserve planning in the oil and gas exploration planning as an example, in this embodiment, in the 2025 oil and gas reserve planning, a constraint condition can be set in advance, and the constraint condition is specifically that the sum of the trapped oil and gas potential of any sub-region deployed to the 2025 oil and gas reserve planning is not greater than the proved oil and gas reserves of the sub-region in 2025. Taking the evaluation unit 2 belonging to the first type of evaluation unit as an example, it has been predicted that the proved oil and gas reserves of the evaluation unit 2 in 2025 are 50.9 million tons. Therefore, the constraint condition related to the evaluation unit can be set as that the sum of the trapped oil and gas potential of the evaluation unit 2 deployed to the 2025 oil and gas reserve planning is not greater than 50.9 million tons.

[0106] In this embodiment, in the 2025 proved oil and gas reserves planning, the preset planning target is set to the total value of the trapped oil and gas potential deployed in the 2025 oil and gas reserves planning equal to the overall proved oil and gas reserves of the target study area in 2025. Figure 4 As shown, the overall proven oil and gas reserves in the target study area in 2025 are 259 million tons.

[0107] In this embodiment, each primary trapped oil and gas potential in the first evaluation unit, i.e., the first regional grouping, can be deployed one by one to the 2025 oil and gas reserve planning under the constraint conditions of each sub-region. For example, the primary trapped oil and gas potential of evaluation units 2, 3, 9, 14, and 16 belonging to the first evaluation unit can be deployed one by one to the 2025 oil and gas reserve planning. If the preset planning target is not met, the primary trapped oil and gas potential of evaluation unit 5 belonging to the second evaluation unit can be deployed to the 2025 oil and gas reserve planning to meet the preset planning target. At this time, the primary trapped oil and gas potentials deployed in evaluation units 2, 3, 9, 14, and 16 are 5090, 6430, 1880, 3600, and 5400, respectively, and the primary trapped oil and gas potential deployed in evaluation unit 5 is 3500.

[0108] For the oil and gas reserve planning in subsequent years, this embodiment may first set constraints and preset planning targets. For example, in 2026, the constraints of this embodiment may be set such that the sum of the trapped oil and gas potentials of any sub-region deployed to the oil and gas reserve planning in 2026 shall not be greater than the proved oil and gas reserves of the sub-region in 2026. The preset planning target may be set such that the total value of the trapped oil and gas potential deployed to the oil and gas reserve planning in 2026 is equal to the overall proved oil and gas reserves of the target study area in 2026. Afterwards, this embodiment may deploy the remaining first-level trapped oil and gas potential, second-level trapped oil and gas potential, and third-level trapped oil and gas potential in each evaluation unit to the oil and gas reserve planning in subsequent years in sequence according to the second deployment priority of the regional grouping and the first deployment priority of the trapped oil and gas potential. Figure 4 As shown, in this embodiment, the remaining primary trapped oil and gas potentials in the evaluation units 2, 3, 9, 14, and 16 belonging to the first type of evaluation units can be preferentially deployed one by one into the 2026 annual oil and gas reserve planning, and then the remaining primary trapped potentials in the evaluation unit 5 belonging to the second type of evaluation unit can be deployed into the 2026 annual oil and gas reserve planning.

[0109] For the oil and gas reserve planning in the subsequent years of 2027, 2028 and 2029, the present embodiment can still set the constraint conditions and preset planning targets in advance, and then the remaining primary trapped oil and gas potential, secondary trapped oil and gas potential and tertiary trapped oil and gas potential in each evaluation unit can still be deployed in sequence to the oil and gas reserve planning in the subsequent years according to the second deployment priority of the regional grouping and the first deployment priority of the trapped oil and gas potential.

[0110] It is understandable that if all primary trapped oil and gas potentials have been deployed, deployment can be started directly from the secondary trapped oil and gas potentials, and if all secondary trapped oil and gas potentials have been deployed, deployment can be started directly from the tertiary trapped oil and gas potentials.

[0111] Optionally, the planning period can be selected as 5 years, 10 years or longer according to the needs, such as Figure 4 The years 2025 to 2029 shown in the figure total 5 years.

[0112] It should be noted that this embodiment can divide the target study area into N evaluation units for oil and gas exploration planning, that is, N sub-areas. Predict the planning value of proved oil and gas reserves in the target study area during the planning period, classify the evaluation units of the target study area according to the established exploration planning parameter system, and classify the oil and gas potential to be proved; according to the planning target of proved oil and gas reserves in the target study area, combined with the predicted values ​​of proved oil and gas reserves of various evaluation units and the priority of proved oil and gas potential, optimize the combination of evaluation units to complete the planning of proved oil and gas reserves; according to the planning value of proved oil and gas reserves of the evaluation unit after optimization and the exploration planning indicators, complete the planning of exploration well workload and investment. This embodiment can refine and systematize the oil and gas exploration planning work process through hierarchical classification, improve the success rate of oil and gas discovery, and enhance the scientific nature of exploration planning.

[0113] The offshore oil and gas exploration planning optimization method proposed in this embodiment can establish a relevant parameter system, optimize the combination of evaluation units required for planning each year from the perspective of grading and classification, improve the success rate of oil and gas discovery, and enhance the scientific nature of exploration planning.

[0114] based on Figure 1 This embodiment proposes a third offshore oil and gas exploration planning optimization method, which, after deploying each trapped oil and gas potential one by one to the oil and gas exploration planning of the target research area in the order of high to low first deployment priority until the preset planning target is met, further includes:

[0115] Determine the planned oil and gas reserves, exploration well performance and single well cost for each sub-area;

[0116] For any sub-region, the planned oil and gas reserves of the sub-region are divided by the exploration well results of the sub-region to obtain the exploration well workload of the sub-region. The exploration well workload of the sub-region is multiplied by the single well cost of the sub-region to obtain the exploration well investment of the sub-region.

[0117] Calculate the sum of the exploration well workload in each sub-area and use it as the exploration well workload planning value in the target research area; and calculate the sum of the exploration well investment in each sub-area and use it as the exploration well investment planning value in the target research area;

[0118] The exploration well workload, exploration well investment in each sub-area, and the planned exploration well workload and investment in the target study area are deployed into the oil and gas exploration plan.

[0119] Among them, the cost of a single well = unit footage cost × footage / exploration well workload.

[0120] The offshore oil and gas exploration planning optimization method proposed in this embodiment can complete the planning of exploration well workload and investment in the target research area.

[0121] like Figure 5 As shown, this embodiment provides an offshore oil and gas exploration planning and optimization device, which may include:

[0122] A division unit is used to divide the target study area into multiple sub-areas based on the historical oil and gas exploration information of the target study area;

[0123] A determination unit is used to determine N trapped oil and gas potentials of each sub-region based on N preset trap geological success rates; wherein the N trapped oil and gas potentials of the sub-region include the unproven oil and gas potential of the sub-region under each preset trap geological success rate; wherein N is an integer greater than 1;

[0124] A first setting unit is used to set a first deployment priority of each trapped oil and gas potential according to a preset trap geological success rate corresponding to each trapped oil and gas potential; wherein the greater the preset trap geological success rate corresponding to the trapped oil and gas potential, the higher the first deployment priority of the trapped oil and gas potential;

[0125] The first deployment unit is used to deploy each trapped oil and gas potential one by one into the oil and gas exploration plan of the target research area based on the first deployment priority from high to low, until the preset planning target is met

[0126] It should be noted that the processing of the division unit, the determination unit, the first setting unit and the first deployment unit and the beneficial effects thereof can be respectively referred to in Figure 1 Steps S101 to S104 in the above are not described in detail.

[0127] Optionally, the first deployment unit is further used for:

[0128] Predict the proved oil and gas reserves of the target study area and each sub-area to obtain the overall proved oil and gas reserves of the target study area and the predicted proved oil and gas reserves of each sub-area;

[0129] A preset planning target is set according to the overall proved oil and gas reserves, and the preset planning target is that the total value of the trapped oil and gas potential deployed in the oil and gas exploration plan is equal to the overall proved oil and gas reserves; and a constraint condition is set according to the predicted proved oil and gas reserves of each sub-region, and the constraint condition is that the planned proved oil and gas reserves of any sub-region is not greater than the predicted proved oil and gas reserves of the corresponding sub-region, and the planned proved oil and gas reserves of the sub-region are the sum of the corresponding N trapped oil and gas potentials deployed in the oil and gas exploration plan;

[0130] Under the condition that the constraints are met, each trapped oil and gas potential is deployed one by one into the oil and gas exploration plan based on the first deployment priority from high to low until the preset planning target is met.

[0131] Optionally, the N trapped oil and gas potentials in each sub-area include a first-level trapped oil and gas potential, a second-level trapped oil and gas potential, and a third-level trapped oil and gas potential in descending order of first deployment priority;

[0132] The first deployment unit is further configured to:

[0133] Under the condition of meeting the constraints, the first-level oil and gas potential of each sub-area is deployed into the oil and gas exploration plan one by one, and then the second-level oil and gas potential of each sub-area is deployed into the oil and gas exploration plan one by one, and finally the third-level oil and gas potential of each sub-area is deployed into the oil and gas exploration plan one by one until the preset planning goals are met.

[0134] Optionally, determine the unit, also used to:

[0135] For any preset trap geological success rate, at least one target trap having a trap geological success rate equal to the preset trap geological success rate is determined among the multiple traps in the sub-region, the unproven oil and gas potential of the sub-region in each target trap is determined, the sum of the unproven oil and gas potential of the sub-region in each target trap is calculated, and the sum is determined as the oil and gas potential of a corresponding trap.

[0136] Optionally, the partition unit is also used to:

[0137] In the target study area, oil and gas reservoirs, prospective traps and related source rocks with a common history of oil and gas generation, migration and accumulation are identified as a sub-area as a whole until multiple sub-areas are obtained.

[0138] Optionally, the above device further includes: a second setting unit;

[0139] The second setting unit is used for:

[0140] Under the condition of satisfying the constraint conditions, the oil and gas potential of the primary traps in each sub-region is preferentially deployed one by one into the oil and gas exploration plan, and the oil and gas exploration planning indicators of each sub-region are obtained;

[0141] According to the oil and gas exploration planning index of each sub-region and the preset multiple index intervals, the multiple sub-regions are divided into multiple regional groups corresponding to the multiple index intervals one by one; wherein each regional group includes at least one sub-region;

[0142] The second deployment priority of each regional group is set according to the indicator interval corresponding to the regional group; wherein, the larger the indicator interval corresponding to the regional group is, the higher the second deployment priority of the regional group is.

[0143] Optionally, the multiple area groups include a first-category area group, a second-category area group, and a third-category area group, with the second deployment priorities decreasing in sequence;

[0144] The first deployment unit is further configured to:

[0145] Under the condition of satisfying the constraint conditions, each primary trap oil and gas potential in the first type of regional grouping is preferentially deployed one by one into the oil and gas exploration plan, and then each primary trap oil and gas potential in the second type of regional grouping is deployed one by one into the oil and gas exploration plan, and then each primary trap oil and gas potential in the third type of regional grouping is deployed one by one into the oil and gas exploration plan, and then each secondary trap oil and gas potential in the first type of regional grouping is deployed one by one into the oil and gas exploration plan, and then each secondary trap oil and gas potential in the second type of regional grouping is deployed one by one into the oil and gas exploration plan, until the preset planning objectives are met.

[0146] Optionally, the oil and gas exploration planning indicators include at least one of the unproven oil and gas potential, exploration activity and exploration well performance.

[0147] Optionally, the above device further includes: a second deployment unit;

[0148] The second deployment unit is used to:

[0149] Based on the order of the first deployment priority from high to low, each trapped oil and gas potential is deployed one by one into the oil and gas exploration plan of the target study area until the preset planning target is met, and then the planned oil and gas reserves, exploration well results and single well cost of each sub-area are determined;

[0150] For any sub-region, the planned oil and gas reserves of the sub-region are divided by the exploration well results of the sub-region to obtain the exploration well workload of the sub-region. The exploration well workload of the sub-region is multiplied by the single well cost of the sub-region to obtain the exploration well investment of the sub-region.

[0151] Calculate the sum of the exploration well workload in each sub-area and use it as the exploration well workload planning value in the target research area; and calculate the sum of the exploration well investment in each sub-area and use it as the exploration well investment planning value in the target research area;

[0152] The exploration well workload, exploration well investment in each sub-area, and the planned exploration well workload and investment in the target study area are deployed into the oil and gas exploration plan.

[0153] The offshore oil and gas exploration planning compilation optimization device proposed in this embodiment can divide the target study area into multiple sub-areas based on the historical oil and gas exploration information of the target study area, determine the N trapped oil and gas potentials of each sub-area based on the N preset trap geological success rates, set the first deployment priority of each trapped oil and gas potential based on the preset trap geological success rate corresponding to each trapped oil and gas potential, and deploy each trapped oil and gas potential one by one in the oil and gas exploration plan of the target study area based on the order of the first deployment priority from high to low until the preset planning target is met. This embodiment can refine the oil and gas exploration planning process, reduce the risk of oil and gas discovery, and enhance the scientific nature of the exploration plan while achieving the preset planning target.

[0154] The offshore oil and gas exploration planning and optimization device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above-mentioned functions.

[0155] The embodiment of the present invention also provides a computer device having the above Figure 5 The offshore oil and gas exploration planning and optimization device shown.

[0156] See also Figure 6, a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. The various components are connected to each other using different buses for communication, and can be installed on a common motherboard or installed in other ways as needed. The processor can process instructions executed in the computer device, including instructions stored in or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 6 A processor 10 is taken as an example.

[0157] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0158] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0159] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function. The data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage devices. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0160] The memory 20 may include a volatile memory, such as a random access memory. The memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive. The memory 20 may also include a combination of the above-mentioned types of memory.

[0161] The computer device further comprises a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0162] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0163] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for optimizing offshore oil and gas exploration planning, characterized in that: include: Dividing the target study area into a plurality of sub-areas according to historical oil and gas exploration information of the target study area; Based on N preset trap geological success rates, determining N trapped oil and gas potentials of each of the sub-areas; wherein the N trapped oil and gas potentials of the sub-areas include the unproven oil and gas potential of the sub-areas at each of the preset trap geological success rates; wherein N is an integer greater than 1; According to the preset trap geological success rate corresponding to each of the trapped oil and gas potentials, a first deployment priority of each of the trapped oil and gas potentials is set; wherein the greater the preset trap geological success rate corresponding to the trapped oil and gas potential, the higher the first deployment priority of the trapped oil and gas potential; Based on the order of the first deployment priority from high to low, each of the trapped oil and gas potentials is deployed one by one into the oil and gas exploration plan of the target research area until the preset planning target is met.

2. The method according to claim 1, characterized in that The step of deploying each of the trapped oil and gas potentials one by one into the oil and gas exploration plan of the target research area based on the first deployment priority from high to low, until the preset planning target is met, includes: Predicting the proven oil and gas reserves of the target study area and each of the sub-areas to obtain the overall proven oil and gas reserves of the target study area and the predicted proven oil and gas reserves of each of the sub-areas; The preset planning target is set according to the overall proved oil and gas reserves, and the preset planning target is that the total value of the trapped oil and gas potential deployed in the oil and gas exploration plan is equal to the overall proved oil and gas reserves; and a constraint condition is set according to the predicted proved oil and gas reserves of each sub-region, and the constraint condition is that the planned proved oil and gas reserves of any of the sub-regions is not greater than the predicted proved oil and gas reserves of the corresponding sub-region, and the planned proved oil and gas reserves of the sub-region is the sum of the corresponding N trapped oil and gas potentials deployed in the oil and gas exploration plan; Under the condition that the constraint condition is met, each of the trapped oil and gas potentials is deployed one by one into the oil and gas exploration plan based on the order of the first deployment priority from high to low until the preset planning target is met.

3. The method according to claim 2, characterized in that The N trapped oil and gas potentials in each of the sub-areas include a first-level trapped oil and gas potential, a second-level trapped oil and gas potential, and a third-level trapped oil and gas potential in descending order of first deployment priority; The step of deploying each of the trapped oil and gas potentials into the oil and gas exploration plan one by one based on the order of the first deployment priority from high to low when the constraint condition is satisfied, until the preset planning target is satisfied, includes: Under the condition that the constraint conditions are met, the primary trapped oil and gas potential of each of the sub-areas is preferentially deployed one by one into the oil and gas exploration plan, and then the secondary trapped oil and gas potential of each of the sub-areas is deployed one by one into the oil and gas exploration plan, and finally the tertiary trapped oil and gas potential of each of the sub-areas is deployed one by one into the oil and gas exploration plan until the preset planning target is met.

4. The method according to claim 1, characterized in that: Based on the N preset trap geological success rates, the oil and gas potential of the N traps in the sub-area is determined, including: For any of the preset trap geological success rates, at least one target trap having a trap geological success rate equal to the preset trap geological success rate is determined among the multiple traps in the sub-area, the unproven oil and gas potential of the sub-area in each of the target traps is determined, the sum of the unproven oil and gas potential of the sub-area in each of the target traps is calculated, and the sum is determined as the oil and gas potential of the corresponding trap.

5. The method according to claim 1, characterized in that According to the historical oil and gas exploration information of the target research area, the target research area is divided into multiple sub-areas, including: In the target research area, oil and gas reservoirs, prospective traps and related source rocks with a common history of oil and gas generation, migration and accumulation are integrally determined as one of the sub-areas until the multiple sub-areas are obtained.

6. The method according to claim 3, characterized in that Under the condition that the constraint condition is met, before the primary trapped oil and gas potential of each sub-area is preferentially deployed one by one into the oil and gas exploration plan, the method further includes: Obtaining oil and gas exploration planning indicators for each of the sub-regions; According to the oil and gas exploration planning index of each of the sub-regions and the preset multiple index intervals, the multiple sub-regions are divided into multiple regional groups corresponding to the multiple index intervals one by one; wherein each of the regional groups includes at least one of the sub-regions; The second deployment priority of each of the regional groups is set according to the indicator interval corresponding to the regional group; wherein, the larger the indicator interval corresponding to the regional group is, the higher the second deployment priority of the regional group is.

7. The method according to claim 6, characterized in that The multiple area groups include a first type area group, a second type area group, and a third type area group with decreasing second deployment priorities in sequence; In the case where the constraint conditions are met, the primary trapped oil and gas potential of each sub-area is preferentially deployed one by one into the oil and gas exploration plan, and then the secondary trapped oil and gas potential of each sub-area is deployed one by one into the oil and gas exploration plan, and finally the tertiary trapped oil and gas potential of each sub-area is deployed one by one into the oil and gas exploration plan until the preset planning target is met, including: In the case where the constraint condition is met, each of the first-level trapped oil and gas potentials in the first-category regional grouping is preferentially deployed one by one into the oil and gas exploration plan, and then each of the first-level trapped oil and gas potentials in the second-category regional grouping is deployed one by one into the oil and gas exploration plan, and then each of the first-level trapped oil and gas potentials in the third-category regional grouping is deployed one by one into the oil and gas exploration plan, and then each of the second-level trapped oil and gas potentials in the first-category regional grouping is deployed one by one into the oil and gas exploration plan, and then each of the second-level trapped oil and gas potentials in the second-category regional grouping is deployed one by one into the oil and gas exploration plan, until the preset planning target is met.

8. The method according to claim 1, characterized in that: The oil and gas exploration planning indicators include at least one of the unproven oil and gas potential, exploration activity and exploration well performance.

9. The method according to any one of claims 1 to 8, characterized in that After deploying each of the trapped oil and gas potentials one by one into the oil and gas exploration plan of the target research area in descending order based on the first deployment priority until the preset planning target is met, the method further includes: Determine the planned oil and gas reserves, exploration well results and single well cost of each sub-area; For any of the sub-regions, the planned oil and gas reserves of the sub-region are divided by the exploration well performance of the sub-region to obtain the exploration well workload of the sub-region, and the exploration well workload of the sub-region is multiplied by the single well cost of the sub-region to obtain the exploration well investment of the sub-region; Calculating the sum of the exploration well workload of each of the sub-areas and using it as the exploration well workload planning value of the target research area; and calculating the sum of the exploration well investment of each of the sub-areas and using it as the exploration well investment planning value of the target research area; The exploration well workload, exploration well investment of each sub-area, the exploration well workload planning value and the exploration well investment planning value of the target research area are deployed into the oil and gas exploration plan.

10. An offshore oil and gas exploration planning and optimization device, characterized in that: include: A division unit, used for dividing the target study area into a plurality of sub-areas according to the historical oil and gas exploration information of the target study area; A determination unit, configured to determine N trapped oil and gas potentials of each of the sub-regions based on N preset trap geological success rates; wherein the N trapped oil and gas potentials of the sub-regions include the unproven oil and gas potential of the sub-region under each of the preset trap geological success rates; wherein N is an integer greater than 1; A first setting unit is used to set a first deployment priority of each of the trapped oil and gas potentials according to the preset trap geological success rate corresponding to each of the trapped oil and gas potentials; wherein, the greater the preset trap geological success rate corresponding to the trapped oil and gas potential, the higher the first deployment priority of the trapped oil and gas potential; The first deployment unit is used to deploy each of the trapped oil and gas potentials one by one into the oil and gas exploration plan of the target research area based on the first deployment priority from high to low, until the preset planning target is met.

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