Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas Reservoirs
Shale reservoirs have the characterizations of low porosity, low permeability, and hydrocarbon organic matter self-generation and self-storage, resulting in its complex flow mechanisms. Compared with fractured vertical wells, multiple-fractured horizontal wells are widely used due to their advantage...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/7364734 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832566361566478336 |
|---|---|
| author | Dianfa Du Genkai Zhang Yanwu Zhao Xiaofei Sun Bin Zhang |
| author_facet | Dianfa Du Genkai Zhang Yanwu Zhao Xiaofei Sun Bin Zhang |
| author_sort | Dianfa Du |
| collection | DOAJ |
| description | Shale reservoirs have the characterizations of low porosity, low permeability, and hydrocarbon organic matter self-generation and self-storage, resulting in its complex flow mechanisms. Compared with fractured vertical wells, multiple-fractured horizontal wells are widely used due to their advantages of effectively increasing the well control range and further expanding the drainage area. To further study the multiscale flow mechanisms of shale gas, a flow model was established that considered viscous flow in microfractures and inorganic pores, the diffusion of Knudsen in nanoscale porosity, the coexistence of slippage, adsorption-desorption effects under infinity, and closed outer boundary conditions; based on the continuous point source solution, a multiple-fractured horizontal well flow model was established and solved by MATLAB programming. Then, the effects of various factors were investigated. The results show that the Knudsen diffusion and slippage coefficients mainly affect the apparent permeability of the matrix pores. The more the Knudsen diffusion and slippage coefficients are, the earlier the turbulent flow occurs and the higher the gas production is. |
| format | Article |
| id | doaj-art-b2eb9be3385c4931b2e877d856e432db |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-b2eb9be3385c4931b2e877d856e432db2025-02-03T01:04:28ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/73647347364734Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas ReservoirsDianfa Du0Genkai Zhang1Yanwu Zhao2Xiaofei Sun3Bin Zhang4Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, ChinaKey Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, ChinaKey Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, ChinaKey Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, ChinaKey Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, ChinaShale reservoirs have the characterizations of low porosity, low permeability, and hydrocarbon organic matter self-generation and self-storage, resulting in its complex flow mechanisms. Compared with fractured vertical wells, multiple-fractured horizontal wells are widely used due to their advantages of effectively increasing the well control range and further expanding the drainage area. To further study the multiscale flow mechanisms of shale gas, a flow model was established that considered viscous flow in microfractures and inorganic pores, the diffusion of Knudsen in nanoscale porosity, the coexistence of slippage, adsorption-desorption effects under infinity, and closed outer boundary conditions; based on the continuous point source solution, a multiple-fractured horizontal well flow model was established and solved by MATLAB programming. Then, the effects of various factors were investigated. The results show that the Knudsen diffusion and slippage coefficients mainly affect the apparent permeability of the matrix pores. The more the Knudsen diffusion and slippage coefficients are, the earlier the turbulent flow occurs and the higher the gas production is.http://dx.doi.org/10.1155/2020/7364734 |
| spellingShingle | Dianfa Du Genkai Zhang Yanwu Zhao Xiaofei Sun Bin Zhang Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas Reservoirs Geofluids |
| title | Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas Reservoirs |
| title_full | Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas Reservoirs |
| title_fullStr | Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas Reservoirs |
| title_full_unstemmed | Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas Reservoirs |
| title_short | Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas Reservoirs |
| title_sort | transient flow theory of multiple fractured horizontal wells with complex mechanisms in shale gas reservoirs |
| url | http://dx.doi.org/10.1155/2020/7364734 |
| work_keys_str_mv | AT dianfadu transientflowtheoryofmultiplefracturedhorizontalwellswithcomplexmechanismsinshalegasreservoirs AT genkaizhang transientflowtheoryofmultiplefracturedhorizontalwellswithcomplexmechanismsinshalegasreservoirs AT yanwuzhao transientflowtheoryofmultiplefracturedhorizontalwellswithcomplexmechanismsinshalegasreservoirs AT xiaofeisun transientflowtheoryofmultiplefracturedhorizontalwellswithcomplexmechanismsinshalegasreservoirs AT binzhang transientflowtheoryofmultiplefracturedhorizontalwellswithcomplexmechanismsinshalegasreservoirs |