DEFINITION AND DESCRIPTION OF THE OIL AND GAS RESERVOIR CONNECTIVITY COEFFICIENT
The relevance of the research is caused by the need in quantitative evaluation of reservoir connectivity of models for classifying realizations in multivariant modelling and optimization of selection of methods and parameters for reservoir geomodelling. The main aim of the research is to define conn...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Russian |
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Tomsk Polytechnic University
2020-01-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/2460/2155 |
| _version_ | 1819068509656711168 |
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| author | Victor L. Popov Alexander V. Podnebesnykh Sergey V. Pylnik |
| author_facet | Victor L. Popov Alexander V. Podnebesnykh Sergey V. Pylnik |
| author_sort | Victor L. Popov |
| collection | DOAJ |
| description | The relevance of the research is caused by the need in quantitative evaluation of reservoir connectivity of models for classifying realizations in multivariant modelling and optimization of selection of methods and parameters for reservoir geomodelling. The main aim of the research is to define connectivity coefficient and estimate its representative validity for different size and geometry models; to evaluate impact of reservoir heterogeneity parameters on connectivity coefficient value. Objects of the research are geological and simulation models of oil and gas reservoirs. Methods of the research are geological modelling and reservoir simulation, statistical analysis of the results of geomodeling and reservoir simulation. Results. The paper briefly describes the existing methods for evaluating the connectivity of oil and gas reservoirs and new approach to connectivity estimation. New connectivity coefficient is defined as a ratio of model liquid rate to unit model liquid rate. Unit model means that net to gross ratio value for all cells is 1 and the model provides maximum possible liquid rate. The paper considers the impact of the model geometry and scale on the connectivity coefficient value. The authors have studied the relation of connectivity coefficient to net to gross ratio, variogram ranges and anisotropy, nugget effect. The connectivity coefficient was stated as a variable, which characterizes the ability of reservoir to pass fluid independent of absolute and relative permeability, porosity, transmissibility etc. The connectivity coefficient as opposed to percolation theory methods can provide continuous evaluation of fluid flow between model cells and does not require valid production history of reservoir. |
| first_indexed | 2024-12-21T16:35:17Z |
| format | Article |
| id | doaj.art-1883f9064562462d805eaef3d6d92056 |
| institution | Directory Open Access Journal |
| issn | 2500-1019 2413-1830 |
| language | Russian |
| last_indexed | 2024-12-21T16:35:17Z |
| publishDate | 2020-01-01 |
| publisher | Tomsk Polytechnic University |
| record_format | Article |
| series | Известия Томского политехнического университета: Инжиниринг георесурсов |
| spelling | doaj.art-1883f9064562462d805eaef3d6d920562022-12-21T18:57:15ZrusTomsk Polytechnic UniversityИзвестия Томского политехнического университета: Инжиниринг георесурсов2500-10192413-18302020-01-01331121122110.18799/24131830/2020/1/2460DEFINITION AND DESCRIPTION OF THE OIL AND GAS RESERVOIR CONNECTIVITY COEFFICIENTVictor L. Popov0Alexander V. Podnebesnykh1Sergey V. Pylnik2JSC «TomskNIPIneft»Ufa State Petroleum Technological UniversityJSC «TomskNIPIneft»The relevance of the research is caused by the need in quantitative evaluation of reservoir connectivity of models for classifying realizations in multivariant modelling and optimization of selection of methods and parameters for reservoir geomodelling. The main aim of the research is to define connectivity coefficient and estimate its representative validity for different size and geometry models; to evaluate impact of reservoir heterogeneity parameters on connectivity coefficient value. Objects of the research are geological and simulation models of oil and gas reservoirs. Methods of the research are geological modelling and reservoir simulation, statistical analysis of the results of geomodeling and reservoir simulation. Results. The paper briefly describes the existing methods for evaluating the connectivity of oil and gas reservoirs and new approach to connectivity estimation. New connectivity coefficient is defined as a ratio of model liquid rate to unit model liquid rate. Unit model means that net to gross ratio value for all cells is 1 and the model provides maximum possible liquid rate. The paper considers the impact of the model geometry and scale on the connectivity coefficient value. The authors have studied the relation of connectivity coefficient to net to gross ratio, variogram ranges and anisotropy, nugget effect. The connectivity coefficient was stated as a variable, which characterizes the ability of reservoir to pass fluid independent of absolute and relative permeability, porosity, transmissibility etc. The connectivity coefficient as opposed to percolation theory methods can provide continuous evaluation of fluid flow between model cells and does not require valid production history of reservoir.http://izvestiya.tpu.ru/archive/article/view/2460/2155geomodelreservoir connectivityconnectivity coefficientvariogramnugget effectsequential indicator simulationpercolationmultiwell productivity index |
| spellingShingle | Victor L. Popov Alexander V. Podnebesnykh Sergey V. Pylnik DEFINITION AND DESCRIPTION OF THE OIL AND GAS RESERVOIR CONNECTIVITY COEFFICIENT Известия Томского политехнического университета: Инжиниринг георесурсов geomodel reservoir connectivity connectivity coefficient variogram nugget effect sequential indicator simulation percolation multiwell productivity index |
| title | DEFINITION AND DESCRIPTION OF THE OIL AND GAS RESERVOIR CONNECTIVITY COEFFICIENT |
| title_full | DEFINITION AND DESCRIPTION OF THE OIL AND GAS RESERVOIR CONNECTIVITY COEFFICIENT |
| title_fullStr | DEFINITION AND DESCRIPTION OF THE OIL AND GAS RESERVOIR CONNECTIVITY COEFFICIENT |
| title_full_unstemmed | DEFINITION AND DESCRIPTION OF THE OIL AND GAS RESERVOIR CONNECTIVITY COEFFICIENT |
| title_short | DEFINITION AND DESCRIPTION OF THE OIL AND GAS RESERVOIR CONNECTIVITY COEFFICIENT |
| title_sort | definition and description of the oil and gas reservoir connectivity coefficient |
| topic | geomodel reservoir connectivity connectivity coefficient variogram nugget effect sequential indicator simulation percolation multiwell productivity index |
| url | http://izvestiya.tpu.ru/archive/article/view/2460/2155 |
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