| Mechanistic investigation of gas injection treatment in a continental shale gas condensate reservoir | |
Li LL(李龙龙); Qin, Xing; Zhou, Chao; Liu YW(刘曰武) ; Pang, Wei; Wang LT(王陆亭); Ding JG(丁玖阁)
| |
| Corresponding Author | Li, Longlong([email protected]) ; Liu, Yuewu([email protected]) |
| Source Publication | ACTA MECHANICA SINICA
 |
| 2024-09-01 | |
| Volume | 40Issue:9Pages:13 |
| ISSN | 0567-7718 |
| Abstract | Low thermal evolution degree of gas and connected fracture network are key features in the continental shale gas reservoirs. When the pressure decreases lower than the dew point pressure, gas condensate diminishes the mobility of subsurface fluid forms in the near well region, which further reduces the productivity and final recovery factor in addition to the low connected fracture network. This work is motivated to investigate the application of gas injection, proven to be a feasible technique in conventional/marine-shale gas condensate reservoirs, in continental shale gas condensate reservoirs. We apply a compositional model to investigate the mechanism of gas injection treatment taking a continental shale gas condensate reservoir in the Fuxing area, Sichuan Basin, China as an example. The results demonstrate that for the removal of gas condensate during CO2 injection, re-vaporization plays the main mechanism through two processes including pressurization and development of miscibility, while the former is overwhelming. Considering the variation trend of the total volume of gas condensate, we divide the whole injection process into four and six stages in the single fracture model and fracture network model, respectively, and reason the trend with respect to phase behavior and flow pattern. A sensitive study on the injected gas type indicates that the sorting of the gas injection performance to remove gas condensate produced gas followed by CH4, and followed by CO2. Finally, we investigate the performance of cyclic produced-gas injection and optimize the injection scheme. This work provides technical and theoretical support for the development of continental shale gas reservoirs. |
| Keyword | Gas injection Gas condensate Continental shale reservoir Mechanism Numerical simulation |
| DOI | 10.1007/s10409-024-23524-x |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:001253361800005 |
| WOS Keyword | HUFF-N-PUFF ; ISOTHERMAL FLASH PROBLEM ; TRANSIENT ANALYSIS ; SIMULATION ; RECOVERY ; WELL |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Project | Sinopec Key Laboratory of Shale Oil and Gas Drilling, Completion and Fracturing[35800000-22-ZC0613-0023] ; Beijing Municipal Natural Science Foundation[2232073] ; Sinopec Science and Technology Department[P22005] ; Sinopec Science and Technology Department[P21078-8] |
| Funding Organization | Sinopec Key Laboratory of Shale Oil and Gas Drilling, Completion and Fracturing ; Beijing Municipal Natural Science Foundation ; Sinopec Science and Technology Department |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95806 |
| Collection | 流固耦合系统力学重点实验室 |
| Recommended Citation GB/T 7714 | Li LL,Qin, Xing,Zhou, Chao,et al. Mechanistic investigation of gas injection treatment in a continental shale gas condensate reservoir[J]. ACTA MECHANICA SINICA,2024,40,9,:13. |
| APA | 李龙龙.,Qin, Xing.,Zhou, Chao.,刘曰武.,Pang, Wei.,...&丁玖阁.(2024).Mechanistic investigation of gas injection treatment in a continental shale gas condensate reservoir.ACTA MECHANICA SINICA,40(9),13. |
| MLA | 李龙龙,et al."Mechanistic investigation of gas injection treatment in a continental shale gas condensate reservoir".ACTA MECHANICA SINICA 40.9(2024):13. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment