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- Title
鄂尔多斯盆地低渗岩性气藏型储气库建库设计 与运行优化关键技术.
- Authors
李进步; 夏 勇; 王德龙; 赵晨阳; 张建国; 王蕾蕾; 何依林; 安文宏
- Abstract
The reconstruction of underground gas storage of low permeability lithology gas reservoir in Ordos Basin has various reservoir features, complex sealing conditions, and hydrogen sulfide in the Ordos Basin, which makes geological evaluation and construction operation difficult. The key technologies for designing and operating gas storage in low-permeability lithologic reservoirs are summarized from three aspects: site selection evaluation, index design, and operation optimization. This research establishes the site selection evaluation technology and site selection index system of gas storage in low-permeability lithologic gas reservoirs, and ten favorable construction areas are determined. Besides, the formation of gas storage in low permeability lithologic reservoirs index design technology effectively improves the injection-production performance of gas wells, expands the operating pressure range, optimizes the injection-production well type and location deployment mode, and supports the optimization design of four gas storages. Moreover, the paper forms the evaluation technology of the whole life cycle operation of gas storage. The relevant findings help petroleum engineers continuously improve the peak shaving capacity of the in-service gas storage. Meanwhile, we optimize the hydrogen sulfide production gas elutriation mode, and rearrange the geology, wellbore, and ground integrated management and evaluation methods, thus realizing the long-term safe operation of the gas storage in low-permeability lithologic reservoirs. Three key technologies have been successfully applied to the site selection, design, and operation of SH, YU, SD, and LW gas storage in the Ordos Basin. The scheme design indicators are basically consistent with the actual dynamic evaluation, and the peak shaving capacity is 7.5×108 m³. In-service gas storages in the research areas have realized more than eight years of safe operation.
- Subjects
GAS wells; GAS reservoirs; GAS storage; LIFE cycles (Biology); HYDROGEN sulfide; UNDERGROUND storage; PETROLEUM engineering
- Publication
Natural Gas Geoscience, 2023, Vol 34, Issue 8, p1442
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2023.03.005