CN103790565A - Complicated fault block oil reservoir development well pattern optimizing design method - Google Patents
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Abstract
The invention provides a complicated fault block oil reservoir development well pattern optimizing design method which is based on complicated fault block target area fine geology research and reasonable development layer division. Firstly, structural forms are performed, individual layer blocks are finely classified, the classification is performed according to the oil-bearing area size, then main geologic features and main development characteristics of the similar oil reservoirs are abstracted, and characteristic models of classified and graded complicated fault block oil reservoirs are established. Reasonable well spacing density, injection-production well pattern and injection-production parameter design optimization is carried out through a mathematic and numerical simulation means. Reasonable injection-production well pattern and production parameters of a series of classified and graded complicated fault block oil reservoirs are obtained, and well pattern optimization design of the complicated fault blocks is finished. By adopting the complicated fault block oil reservoir development well pattern optimizing design method, reasonable injection-production well pattern of the complicated fault block oil reservoirs with respective different structural forms in different areas can be quickly confirmed, the reserve utilization and water flooding control degree of the complicated fault block oil reservoirs can be improved, and efficient development of the fault blocks can be achieved.
Description
Technical field
The present invention relates to oil reservoir development technical field, particularly relate to a kind of Complex Fault Block Oil Reservoir well pattern Optimization Design.
Background technology
Well pattern design is an important process of oilfield development program establishment, and for fault block oil reservoir, area is greater than 0.5km
2simple fault block, generally can dispose conventional pattern well network or periferal water flooding mode is developed, but be less than 0.5km for oil area
2, the various Complex Fault Block Oil Reservoir of structural configuration, adopt regular Pattern Well Networks mode to exist to be difficult to form and improve flooding pattern (group), the low shortcoming of position, corner reserves development degree, had a strong impact on waterflooding development effect.And in Fault-Block Oilfield Development process, on the one hand, for developing Fault Block, along with going deep in geological knowledge, fracture system reconfigures the rear newfound low little fault block of employing or not employing that exists, on the other hand, along with rolling prospecting target becomes increasingly complex, newfound fault block oil reservoir, take the Complex Fault Block Oil Reservoir of small size as main, is therefore badly in need of a kind of compliance for small complex fault block good, the method of strong operability is developed well pattern design, instructs such fault-block oilfield Efficient Development.We have invented a kind of new Complex Fault Block Oil Reservoir well pattern Optimization Design for this reason, have solved above technical problem.
Summary of the invention
The object of this invention is to provide a kind of by meticulous division Oil Reservoir Types and utilize Research Numerical Simulation Techique to carry out the Complex Fault Block Oil Reservoir well pattern Optimization Design of quick, the reasonable development to Complex Fault Block Oil Reservoir.
Object of the present invention can be achieved by the following technical measures: Complex Fault Block Oil Reservoir well pattern Optimization Design, and this Complex Fault Block Oil Reservoir well pattern Optimization Design comprises: step 1, complex fault block is classified and classification; Step 2, extracts the reservoir geology, the fluid flow parameter that affect complex fault block, sets up the characteristic model of classification oil reservoir; Step 3, utilizes the economical rationality well spacing density of reservoir engineering empirical formula preresearch estimates different stage oil area fault block, and the well pattern model under different injection-to-producing well ratios is disposed in design, and is loaded into characteristic of correspondence model, obtains reservoir numerical simulation model; Step 4, carries out the numerical simulation calculation under different well patterns, and comparative analysis obtains rational injection-to-producing well ratio and flooding pattern form; And step 5, according to the optimum results of step 4, complete flooding pattern by fault block and dispose.
Object of the present invention also can be achieved by the following technical measures:
This Complex Fault Block Oil Reservoir well pattern Optimization Design also comprises, before step 1, chooses complex fault block district to be analyzed, carry out early stage Reservoir Description and reasonable development series of strata divide.
In step 1, in plane, with the single natural fault blocks of fault sealing, longitudinally the upper single series of strata take division, as unit, are divided into triangle, quadrangle and fillet banding pattern three classes according to the geometric shape of fault block; Select area classification step-length, carry out classification according to the oil area size of natural fault blocks.
According to the natural fault blocks area distributions of different fault-block oilfields target area, the reserves abundance of straticulate exploration is selected this area classification step-length.
In step 2, affect after Complex Fault Block Oil Reservoir geology, fluid flow parameter in extraction, analyze pilot production or according to similar oil reservoir development feature, set up the characteristic model of classification oil reservoir,
This Complex Fault Block Oil Reservoir well pattern Optimization Design also comprises, in step 4, utilizes this numerical simulation calculation, further optimizes reasonable pressure maintenance level, injection-production ratio and note and adopts strength optimization; And according to the optimum results of step 4, complete reasonable flooding pattern deployment and note and adopt manufacturing parameter design by fault block.
Complex Fault Block Oil Reservoir well pattern Optimization Design in the present invention, the research of complex fault block target area fine geology and rational straticulate exploration are being divided on basis, according to structural configuration, independent series of strata piece is carried out to sophisticated category, carry out classification according to oil area size; The main Development characteristics of abstract Main Geologic Characteristics and similar oil reservoir, sets up the characteristic model of classification Complex Fault Block Oil Reservoir; Reasonable well pattern density, flooding pattern design optimization; Reasonable Injection is adopted parameter design optimization; Obtain reasonable flooding pattern and the manufacturing parameter of a series of classification Complex Fault Block Oil Reservoir, complete the well net optimization design of complex fault block., build by model library meanwhile, and then obtain the reasonable well pattern development mode of the classification complex fault block of system.The present invention can determine the reasonable flooding pattern of Complex Fault Block Oil Reservoir under different structural configurations, different area separately fast, improves the reserves of Complex Fault Block Oil Reservoir and employs and water drive control degree, realizes the Efficient Development of such fault block.
Accompanying drawing explanation
Fig. 1 is a specific embodiment flow chart of Complex Fault Block Oil Reservoir well pattern Optimization Design of the present invention;
Fig. 2 is that the present invention is rationally flooding pattern deployment schematic diagram under the classification of one embodiment of the invention intermediate cam shape complex fault block different area.
The specific embodiment
For above and other object of the present invention, feature and advantage can be become apparent, cited below particularly go out preferred embodiment, and coordinate appended graphicly, be described in detail below.
As shown in Figure 1, Fig. 1 is a specific embodiment flow chart of Complex Fault Block Oil Reservoir well pattern Optimization Design of the present invention.In step 101, choose complex fault block district to be analyzed, carry out the element task such as Reservoir Description and the division of reasonable development series of strata in earlier stage, flow process enters into step 103.
In step 103, in plane, with the single natural fault blocks of fault sealing, longitudinally the upper single series of strata take division, as unit, are divided into triangle, quadrangle and fillet banding pattern three classes according to the geometric shape of fault block; Select rational area classification step-length, carry out classification according to the oil area size of natural fault blocks.Choose different area step-lengths and have different classification results, need to be according to the natural fault blocks area distributions of different fault-block oilfields target area, the reserves abundance of straticulate exploration carrys out choose reasonable and divides step-length, and flow process enters into step 105.
In step 105, extract and affect Complex Fault Block Oil Reservoir geology, fluid flow parameter, analyze pilot production or similar oil reservoir development feature, set up the characteristic model of classification oil reservoir, flow process enters into step 107.
In step 107, utilize the economical rationality well spacing density of reservoir engineering empirical formula preresearch estimates different stage oil area fault block, the well pattern model under different injection-to-producing well ratios is disposed in design, and is loaded into characteristic of correspondence model, obtains reservoir numerical simulation model.Flow process enters into step 109.
In step 109, complete the numerical simulation calculation under different well patterns by computer, comparative analysis obtains rational injection-to-producing well ratio and flooding pattern form.Flow process enters into step 111.
In step 111, utilize this numerical simulation calculation, further to optimize reasonable pressure maintenance level, injection-production ratio and note and adopt strength optimization, flow process enters into step 113.
In step 113, according to optimum results, complete flooding pattern by fault block and dispose.
Fig. 2 is that the present invention is rationally flooding pattern deployment schematic diagram under the classification of one embodiment of the invention intermediate cam shape complex fault block different area.Characteristic model has mainly been considered the parameters such as oil area, geometric shape, stratigraphic dip, water energy and fluid properties.Optimum results shows, changes in embodiment, and under different area classification, reasonably injection-production well is counted difference, and reasonably flooding pattern mode also has difference, for 0.1-0.15km
2, reserves scale is in 10-15 × 10
4the triangle fault block of t, under 70 dollars/bbl of oil price condition, rationally injection-production well number is 3 mouthfuls, oil-water well is deployed in leg-of-mutton bight, the injection-production method optimum that 1 note 2 of bottom water injection is adopted; And for area at 0.25-0.3km
2, reserves scale is in 25-30 × 10
4the triangle fault block of t, under 70 dollars/bbl of oil price condition, rationally injection-production well number is 6 mouthfuls, oil-water well is deployed in leg-of-mutton bight and limit portion, the injection-production method optimum that 2 notes 4 of waist cutting water filling are adopted.
Claims (6)
1. Complex Fault Block Oil Reservoir well pattern Optimization Design, is characterized in that, this Complex Fault Block Oil Reservoir well pattern Optimization Design comprises:
Step 1, classifies complex fault block and classification;
Step 2, extracts the reservoir geology, the fluid flow parameter that affect complex fault block, sets up the characteristic model of classification oil reservoir;
Step 3, utilizes the economical rationality well spacing density of reservoir engineering empirical formula preresearch estimates different stage oil area fault block, and the well pattern model under different injection-to-producing well ratios is disposed in design, and is loaded into characteristic of correspondence model, obtains reservoir numerical simulation model;
Step 4, carries out the numerical simulation calculation under different well patterns, and comparative analysis obtains rational injection-to-producing well ratio and flooding pattern form; And
Step 5, according to the optimum results of step 4, completes flooding pattern by fault block and disposes.
2. Complex Fault Block Oil Reservoir well pattern Optimization Design according to claim 1, it is characterized in that, this Complex Fault Block Oil Reservoir well pattern Optimization Design also comprises, before step 1, choose complex fault block district to be analyzed, carry out early stage Reservoir Description and reasonable development series of strata divide.
3. Complex Fault Block Oil Reservoir well pattern Optimization Design according to claim 1, it is characterized in that, in step 1, in plane with the single natural fault blocks of fault sealing, longitudinally the upper single series of strata take division, as unit, are divided into triangle, quadrangle and fillet banding pattern three classes according to the geometric shape of fault block; Select area classification step-length, carry out classification according to the oil area size of natural fault blocks.
4. Complex Fault Block Oil Reservoir well pattern Optimization Design according to claim 3, is characterized in that, according to the natural fault blocks area distributions of different fault-block oilfields target area, the reserves abundance of straticulate exploration is selected this area classification step-length.
5. Complex Fault Block Oil Reservoir well pattern Optimization Design according to claim 1, it is characterized in that, in step 2, affect after Complex Fault Block Oil Reservoir geology, fluid flow parameter in extraction, analyze pilot production or according to similar oil reservoir development feature, set up the characteristic model of classification oil reservoir.
6. Complex Fault Block Oil Reservoir well pattern Optimization Design according to claim 1, it is characterized in that, this Complex Fault Block Oil Reservoir well pattern Optimization Design also comprises, in step 4, utilize this numerical simulation calculation, further optimize reasonable pressure maintenance level, injection-production ratio and note and adopt strength optimization; And according to the optimum results of step 4, complete reasonable flooding pattern deployment and note and adopt manufacturing parameter design by fault block.
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| CN104007483A (en) * | 2014-06-06 | 2014-08-27 | 马存飞 | Classification method of complex oil-gas blocked reservoirs |
| CN105275457A (en) * | 2014-06-26 | 2016-01-27 | 中国石油化工股份有限公司 | Deployment optimal mode research method for uncompartmentalized oilfield fluvial facies reservoir horizontal well |
| CN105625992A (en) * | 2014-11-07 | 2016-06-01 | 中国石油化工股份有限公司 | Reasonable liquid extracting method specific to roof ridge fault block oil reservoir |
| CN105804710A (en) * | 2014-12-31 | 2016-07-27 | 中国石油化工股份有限公司 | Method for improving gas injection driving effect of low-permeability fractured reservoir |
| CN106351624A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Method of increasing recovery through ultra-high water cut stage fault block oil reservoir zoning regulation and control |
| CN106437674A (en) * | 2015-08-06 | 2017-02-22 | 中国石油化工股份有限公司 | Imitation horizontal well waterflooding well pattern adapting method |
| CN106481315A (en) * | 2015-08-31 | 2017-03-08 | 中国石油化工股份有限公司 | Land sandstone oil reservoir individual well recoverable reserves quickly determines model and method for building up |
| CN106996287A (en) * | 2017-06-08 | 2017-08-01 | 成都北方石油勘探开发技术有限公司 | The flooding pattern arrangement method of sealene triangle oil reservoir |
| CN107829719A (en) * | 2017-02-21 | 2018-03-23 | 中国石油化工股份有限公司 | The Optimization Design of marine oil reservoir new district economic optimum well pattern |
| CN107939371A (en) * | 2017-10-19 | 2018-04-20 | 中国石油天然气股份有限公司 | A kind of method and device of definite well pattern thickening feasibility |
| CN108197366A (en) * | 2017-12-26 | 2018-06-22 | 中国石油大学(华东) | Consider that injection water quality adopts parameter optimization method to the note of reservoir damage |
| CN109519169A (en) * | 2018-10-25 | 2019-03-26 | 广东石油化工学院 | Complex Fault Block Oil Reservoir evaluation of classification method |
| CN110485988A (en) * | 2019-08-19 | 2019-11-22 | 中国石油天然气股份有限公司大港油田分公司 | A kind of low permeability reservoir simulation grid refinement method and device |
| CN113137212A (en) * | 2020-01-17 | 2021-07-20 | 中国石油天然气股份有限公司 | Multi-layer heterogeneous oil reservoir water injection method |
| CN114198072A (en) * | 2021-11-29 | 2022-03-18 | 中国海洋石油集团有限公司 | Optimized deployment method for water-drive development well pattern of multi-layer commingled production reservoir |
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Cited By (23)
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| CN104007483A (en) * | 2014-06-06 | 2014-08-27 | 马存飞 | Classification method of complex oil-gas blocked reservoirs |
| CN104007483B (en) * | 2014-06-06 | 2017-06-06 | 中国石油大学(华东) | A kind of sorting technique of Complicated Fault-Block Hydrocarbon Reservoir |
| CN105275457A (en) * | 2014-06-26 | 2016-01-27 | 中国石油化工股份有限公司 | Deployment optimal mode research method for uncompartmentalized oilfield fluvial facies reservoir horizontal well |
| CN105625992A (en) * | 2014-11-07 | 2016-06-01 | 中国石油化工股份有限公司 | Reasonable liquid extracting method specific to roof ridge fault block oil reservoir |
| CN105804710A (en) * | 2014-12-31 | 2016-07-27 | 中国石油化工股份有限公司 | Method for improving gas injection driving effect of low-permeability fractured reservoir |
| CN105804710B (en) * | 2014-12-31 | 2018-09-11 | 中国石油化工股份有限公司 | A method of improving low permeability fractured reservoir gas injection and drives effect |
| CN106351624A (en) * | 2015-07-16 | 2017-01-25 | 中国石油化工股份有限公司 | Method of increasing recovery through ultra-high water cut stage fault block oil reservoir zoning regulation and control |
| CN106351624B (en) * | 2015-07-16 | 2018-09-04 | 中国石油化工股份有限公司 | The regulation and control of ultra-high water cut stage fault block oil reservoir subregion improve recovery ratio method |
| CN106437674A (en) * | 2015-08-06 | 2017-02-22 | 中国石油化工股份有限公司 | Imitation horizontal well waterflooding well pattern adapting method |
| CN106437674B (en) * | 2015-08-06 | 2019-04-09 | 中国石油化工股份有限公司 | Imitative water injection of horizontal well well pattern adaptation method |
| CN106481315A (en) * | 2015-08-31 | 2017-03-08 | 中国石油化工股份有限公司 | Land sandstone oil reservoir individual well recoverable reserves quickly determines model and method for building up |
| CN106481315B (en) * | 2015-08-31 | 2019-02-01 | 中国石油化工股份有限公司 | Land sandstone oil reservoir individual well recoverable reserves quickly determines model and method for building up |
| CN107829719A (en) * | 2017-02-21 | 2018-03-23 | 中国石油化工股份有限公司 | The Optimization Design of marine oil reservoir new district economic optimum well pattern |
| CN106996287B (en) * | 2017-06-08 | 2020-03-27 | 成都北方石油勘探开发技术有限公司 | Injection-production well pattern arrangement method for irregular triangular oil reservoir |
| CN106996287A (en) * | 2017-06-08 | 2017-08-01 | 成都北方石油勘探开发技术有限公司 | The flooding pattern arrangement method of sealene triangle oil reservoir |
| CN107939371A (en) * | 2017-10-19 | 2018-04-20 | 中国石油天然气股份有限公司 | A kind of method and device of definite well pattern thickening feasibility |
| CN107939371B (en) * | 2017-10-19 | 2019-09-10 | 中国石油天然气股份有限公司 | A kind of method and device of determining well pattern thickening feasibility |
| CN108197366A (en) * | 2017-12-26 | 2018-06-22 | 中国石油大学(华东) | Consider that injection water quality adopts parameter optimization method to the note of reservoir damage |
| CN109519169A (en) * | 2018-10-25 | 2019-03-26 | 广东石油化工学院 | Complex Fault Block Oil Reservoir evaluation of classification method |
| CN110485988A (en) * | 2019-08-19 | 2019-11-22 | 中国石油天然气股份有限公司大港油田分公司 | A kind of low permeability reservoir simulation grid refinement method and device |
| CN113137212A (en) * | 2020-01-17 | 2021-07-20 | 中国石油天然气股份有限公司 | Multi-layer heterogeneous oil reservoir water injection method |
| CN114198072A (en) * | 2021-11-29 | 2022-03-18 | 中国海洋石油集团有限公司 | Optimized deployment method for water-drive development well pattern of multi-layer commingled production reservoir |
| CN114198072B (en) * | 2021-11-29 | 2023-10-17 | 中国海洋石油集团有限公司 | Optimal deployment method for water-flooding well pattern of multi-layer combined oil reservoir |
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