Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage
Based on the differences in production mode and operation process between gas storage and gas reservoir, we established a phase balance test procedure and a theoretical simulation model of phase balance during multi-cycles of injection and production of underground gas storage (UGS) rebuilt from con...
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2021-04-01
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doaj-bba6ba4829e14fd19dac77d9f7d957a12021-04-22T13:37:59ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042021-04-01482395406Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storageYong TANG0Keji LONG1Jieming WANG2Hongcheng XU3Yong WANG4Youwei HE5Lei SHI6Huayin ZHU7State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaState Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China; Key Lab of Oil and Gas Underground Gas Storage Engineer of China National Petroleum Corporation, Langfang 065007, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China; Key Lab of Oil and Gas Underground Gas Storage Engineer of China National Petroleum Corporation, Langfang 065007, ChinaState Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China; Corresponding authorState Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China; Key Lab of Oil and Gas Underground Gas Storage Engineer of China National Petroleum Corporation, Langfang 065007, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China; Key Lab of Oil and Gas Underground Gas Storage Engineer of China National Petroleum Corporation, Langfang 065007, ChinaBased on the differences in production mode and operation process between gas storage and gas reservoir, we established a phase balance test procedure and a theoretical simulation model of phase balance during multi-cycles of injection and production of underground gas storage (UGS) rebuilt from condensate gas reservoir to study the phase characteristics of produced and remaining fluids during multi-cycles of injection and production. Take condensate reservoir gas storage as example, the composition of produced fluid and remaining fluid, phase state of remaining fluid, retrograde condensate saturation and condensate recovery degree in the process of multi-cycles of injection-production were studied through multi-cycle injection-production experiment and phase equilibrium theory simulation. The injected gas could greatly improve the recovery of condensate oil in the gas reservoir, and the condensate oil recovery increased by 42% after 5 cycles of injection and production; the injected gas had significant evaporative and extraction effects on the condensate, especially during the first two cycles; the condensate oil saturation of the formation decreased with the increase of injection-production cycles, and the condensate oil saturation after multi-cycles of injection-production was almost 0; the storage capacity increased by about 7.5% after multi-cycles of injection and production, and the cumulative gas injection volume in the 5th cycle increased by about 25% compared with that in the 1st cycle.http://www.sciencedirect.com/science/article/pii/S1876380421600319condensate gas reservoirgas storagephase characteristicsmulti-cycles of injection-productionEOR |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yong TANG Keji LONG Jieming WANG Hongcheng XU Yong WANG Youwei HE Lei SHI Huayin ZHU |
spellingShingle |
Yong TANG Keji LONG Jieming WANG Hongcheng XU Yong WANG Youwei HE Lei SHI Huayin ZHU Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage Petroleum Exploration and Development condensate gas reservoir gas storage phase characteristics multi-cycles of injection-production EOR |
author_facet |
Yong TANG Keji LONG Jieming WANG Hongcheng XU Yong WANG Youwei HE Lei SHI Huayin ZHU |
author_sort |
Yong TANG |
title |
Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage |
title_short |
Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage |
title_full |
Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage |
title_fullStr |
Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage |
title_full_unstemmed |
Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage |
title_sort |
change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage |
publisher |
KeAi Communications Co., Ltd. |
series |
Petroleum Exploration and Development |
issn |
1876-3804 |
publishDate |
2021-04-01 |
description |
Based on the differences in production mode and operation process between gas storage and gas reservoir, we established a phase balance test procedure and a theoretical simulation model of phase balance during multi-cycles of injection and production of underground gas storage (UGS) rebuilt from condensate gas reservoir to study the phase characteristics of produced and remaining fluids during multi-cycles of injection and production. Take condensate reservoir gas storage as example, the composition of produced fluid and remaining fluid, phase state of remaining fluid, retrograde condensate saturation and condensate recovery degree in the process of multi-cycles of injection-production were studied through multi-cycle injection-production experiment and phase equilibrium theory simulation. The injected gas could greatly improve the recovery of condensate oil in the gas reservoir, and the condensate oil recovery increased by 42% after 5 cycles of injection and production; the injected gas had significant evaporative and extraction effects on the condensate, especially during the first two cycles; the condensate oil saturation of the formation decreased with the increase of injection-production cycles, and the condensate oil saturation after multi-cycles of injection-production was almost 0; the storage capacity increased by about 7.5% after multi-cycles of injection and production, and the cumulative gas injection volume in the 5th cycle increased by about 25% compared with that in the 1st cycle. |
topic |
condensate gas reservoir gas storage phase characteristics multi-cycles of injection-production EOR |
url |
http://www.sciencedirect.com/science/article/pii/S1876380421600319 |
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