The Controls of Pore-Throat Structure on Fluid Performance in Tight Clastic Rock Reservoir: A Case from the Upper Triassic of Chang 7 Member, Ordos Basin, China
The characteristics of porosity and permeability in tight clastic rock reservoir have significant difference from those in conventional reservoir. The increased exploitation of tight gas and oil requests further understanding of fluid performance in the nanoscale pore-throat network of the tight res...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2018/3403026 |
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| author | Yunlong Zhang Zhidong Bao Fei Yang Shuwei Mao Jian Song Li Jiang |
| author_facet | Yunlong Zhang Zhidong Bao Fei Yang Shuwei Mao Jian Song Li Jiang |
| author_sort | Yunlong Zhang |
| collection | DOAJ |
| description | The characteristics of porosity and permeability in tight clastic rock reservoir have significant difference from those in conventional reservoir. The increased exploitation of tight gas and oil requests further understanding of fluid performance in the nanoscale pore-throat network of the tight reservoir. Typical tight sandstone and siltstone samples from Ordos Basin were investigated, and rate-controlled mercury injection capillary pressure (RMICP) and nuclear magnetic resonance (NMR) were employed in this paper, combined with helium porosity and air permeability data, to analyze the impact of pore-throat structure on the storage and seepage capacity of these tight oil reservoirs, revealing the control factors of economic petroleum production. The researches indicate that, in the tight clastic rock reservoir, largest throat is the key control on the permeability and potentially dominates the movable water saturation in the reservoir. The storage capacity of the reservoir consists of effective throat and pore space. Although it has a relatively steady and significant proportion that resulted from the throats, its variation is still dominated by the effective pores. A combination parameter (ε) that was established to be as an integrated characteristic of pore-throat structure shows effectively prediction of physical capability for hydrocarbon resource of the tight clastic rock reservoir. |
| format | Article |
| id | doaj-art-40b531cbc92c48a796714ba5469cbc5f |
| institution | DOAJ |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-40b531cbc92c48a796714ba5469cbc5f2025-08-20T02:39:13ZengWileyGeofluids1468-81151468-81232018-01-01201810.1155/2018/34030263403026The Controls of Pore-Throat Structure on Fluid Performance in Tight Clastic Rock Reservoir: A Case from the Upper Triassic of Chang 7 Member, Ordos Basin, ChinaYunlong Zhang0Zhidong Bao1Fei Yang2Shuwei Mao3Jian Song4Li Jiang5Division of Geology and Mineral Resources, CNNC Beijing Research Institute of Uranium Geology, No. 10 Anwai Xiaoguandongli, Chaoyang, Beijing 100029, ChinaCollege of Geosciences, China University of Petroleum-Beijing, No. 18 Fuxue Road, Changping, Beijing 102249, ChinaCollege of Geosciences, China University of Petroleum-Beijing, No. 18 Fuxue Road, Changping, Beijing 102249, ChinaCollege of Geosciences, China University of Petroleum-Beijing, No. 18 Fuxue Road, Changping, Beijing 102249, ChinaCollege of Geosciences, China University of Petroleum-Beijing, No. 18 Fuxue Road, Changping, Beijing 102249, ChinaResearch Center for Strategy of Global Mineral Resources, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, ChinaThe characteristics of porosity and permeability in tight clastic rock reservoir have significant difference from those in conventional reservoir. The increased exploitation of tight gas and oil requests further understanding of fluid performance in the nanoscale pore-throat network of the tight reservoir. Typical tight sandstone and siltstone samples from Ordos Basin were investigated, and rate-controlled mercury injection capillary pressure (RMICP) and nuclear magnetic resonance (NMR) were employed in this paper, combined with helium porosity and air permeability data, to analyze the impact of pore-throat structure on the storage and seepage capacity of these tight oil reservoirs, revealing the control factors of economic petroleum production. The researches indicate that, in the tight clastic rock reservoir, largest throat is the key control on the permeability and potentially dominates the movable water saturation in the reservoir. The storage capacity of the reservoir consists of effective throat and pore space. Although it has a relatively steady and significant proportion that resulted from the throats, its variation is still dominated by the effective pores. A combination parameter (ε) that was established to be as an integrated characteristic of pore-throat structure shows effectively prediction of physical capability for hydrocarbon resource of the tight clastic rock reservoir.http://dx.doi.org/10.1155/2018/3403026 |
| spellingShingle | Yunlong Zhang Zhidong Bao Fei Yang Shuwei Mao Jian Song Li Jiang The Controls of Pore-Throat Structure on Fluid Performance in Tight Clastic Rock Reservoir: A Case from the Upper Triassic of Chang 7 Member, Ordos Basin, China Geofluids |
| title | The Controls of Pore-Throat Structure on Fluid Performance in Tight Clastic Rock Reservoir: A Case from the Upper Triassic of Chang 7 Member, Ordos Basin, China |
| title_full | The Controls of Pore-Throat Structure on Fluid Performance in Tight Clastic Rock Reservoir: A Case from the Upper Triassic of Chang 7 Member, Ordos Basin, China |
| title_fullStr | The Controls of Pore-Throat Structure on Fluid Performance in Tight Clastic Rock Reservoir: A Case from the Upper Triassic of Chang 7 Member, Ordos Basin, China |
| title_full_unstemmed | The Controls of Pore-Throat Structure on Fluid Performance in Tight Clastic Rock Reservoir: A Case from the Upper Triassic of Chang 7 Member, Ordos Basin, China |
| title_short | The Controls of Pore-Throat Structure on Fluid Performance in Tight Clastic Rock Reservoir: A Case from the Upper Triassic of Chang 7 Member, Ordos Basin, China |
| title_sort | controls of pore throat structure on fluid performance in tight clastic rock reservoir a case from the upper triassic of chang 7 member ordos basin china |
| url | http://dx.doi.org/10.1155/2018/3403026 |
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