Experiments on gas supply capability of commingled production in a fracture-cavity carbonate gas reservoir
Abstract: The CT scan, mercury intrusion test and commingled production physical simulation experiment of pore-, cavity-, and fracture–cavity-type cores were conducted to study the effects of interlayer heterogeneity, drawdown pressure, water saturation and water invasion on gas supply capacity. The...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2017-10-01
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| Series: | Petroleum Exploration and Development |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380417300939 |
| _version_ | 1830190688696795136 |
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| author | Lu WANG Shenglai YANG Yicheng LIU Wei XU Hui DENG Zhan MENG Wei HAN Kun QIAN |
| author_facet | Lu WANG Shenglai YANG Yicheng LIU Wei XU Hui DENG Zhan MENG Wei HAN Kun QIAN |
| author_sort | Lu WANG |
| collection | DOAJ |
| description | Abstract: The CT scan, mercury intrusion test and commingled production physical simulation experiment of pore-, cavity-, and fracture–cavity-type cores were conducted to study the effects of interlayer heterogeneity, drawdown pressure, water saturation and water invasion on gas supply capacity. The experimental results were verified by the radial numerical model of multilayer commingled production based on the Eclipse software. The experimental results show that: the fracture–cavity-type reservoir with strong seepage capability makes great contribution to gas production in the early stage, while the pore- and cavity-type reservoirs with weak seepage capability make more contribution to gas production in the middle and late stages; the absolute permeability of reservoir affects its contribution to productivity, while the relative permeability of reservoir affects the total recovery; the “dynamic supply balance” state among various reservoirs can be achieved under a reasonable drawdown pressure; although the gas production capacity of the fracture–cavity-type reservoir is less affected by edge and bottom water, water breakthrough will first occur in this type reservoir and block other reservoirs, significantly reducing the commingled gas supply capacity and recovery. Key words: fracture–cavity carbonates, micropore structure, high temperature and high pressure physical modeling, commingled production, gas supply capacity |
| first_indexed | 2024-12-17T23:25:52Z |
| format | Article |
| id | doaj.art-0e6f91ac846c408eaedcb56bc80d9eea |
| institution | Directory Open Access Journal |
| issn | 1876-3804 |
| language | English |
| last_indexed | 2024-12-17T23:25:52Z |
| publishDate | 2017-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Petroleum Exploration and Development |
| spelling | doaj.art-0e6f91ac846c408eaedcb56bc80d9eea2022-12-21T21:28:46ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042017-10-01445824833Experiments on gas supply capability of commingled production in a fracture-cavity carbonate gas reservoirLu WANG0Shenglai YANG1Yicheng LIU2Wei XU3Hui DENG4Zhan MENG5Wei HAN6Kun QIAN7State Key Laboratory of Petroleum Resource and Engineering, China University of Petroleum-Beijing, Beijing 102249, ChinaState Key Laboratory of Petroleum Resource and Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Corresponding authorExploration and Development Research Institute of PetroChina Southwest Oil & Gas Field Company, Chengdu 610041, ChinaExploration and Development Research Institute of PetroChina Southwest Oil & Gas Field Company, Chengdu 610041, ChinaExploration and Development Research Institute of PetroChina Southwest Oil & Gas Field Company, Chengdu 610041, ChinaState Key Laboratory of Petroleum Resource and Engineering, China University of Petroleum-Beijing, Beijing 102249, ChinaState Key Laboratory of Petroleum Resource and Engineering, China University of Petroleum-Beijing, Beijing 102249, ChinaState Key Laboratory of Petroleum Resource and Engineering, China University of Petroleum-Beijing, Beijing 102249, ChinaAbstract: The CT scan, mercury intrusion test and commingled production physical simulation experiment of pore-, cavity-, and fracture–cavity-type cores were conducted to study the effects of interlayer heterogeneity, drawdown pressure, water saturation and water invasion on gas supply capacity. The experimental results were verified by the radial numerical model of multilayer commingled production based on the Eclipse software. The experimental results show that: the fracture–cavity-type reservoir with strong seepage capability makes great contribution to gas production in the early stage, while the pore- and cavity-type reservoirs with weak seepage capability make more contribution to gas production in the middle and late stages; the absolute permeability of reservoir affects its contribution to productivity, while the relative permeability of reservoir affects the total recovery; the “dynamic supply balance” state among various reservoirs can be achieved under a reasonable drawdown pressure; although the gas production capacity of the fracture–cavity-type reservoir is less affected by edge and bottom water, water breakthrough will first occur in this type reservoir and block other reservoirs, significantly reducing the commingled gas supply capacity and recovery. Key words: fracture–cavity carbonates, micropore structure, high temperature and high pressure physical modeling, commingled production, gas supply capacityhttp://www.sciencedirect.com/science/article/pii/S1876380417300939 |
| spellingShingle | Lu WANG Shenglai YANG Yicheng LIU Wei XU Hui DENG Zhan MENG Wei HAN Kun QIAN Experiments on gas supply capability of commingled production in a fracture-cavity carbonate gas reservoir Petroleum Exploration and Development |
| title | Experiments on gas supply capability of commingled production in a fracture-cavity carbonate gas reservoir |
| title_full | Experiments on gas supply capability of commingled production in a fracture-cavity carbonate gas reservoir |
| title_fullStr | Experiments on gas supply capability of commingled production in a fracture-cavity carbonate gas reservoir |
| title_full_unstemmed | Experiments on gas supply capability of commingled production in a fracture-cavity carbonate gas reservoir |
| title_short | Experiments on gas supply capability of commingled production in a fracture-cavity carbonate gas reservoir |
| title_sort | experiments on gas supply capability of commingled production in a fracture cavity carbonate gas reservoir |
| url | http://www.sciencedirect.com/science/article/pii/S1876380417300939 |
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