摘要
鄂尔多斯盆地低渗岩性气藏改建地下储气库的储层条件多样,封闭条件复杂,局部含硫化氢等,地质评价和建设运行难度大。从储气库选址评价、指标设计、运行优化3个方面对鄂尔多斯盆地低渗岩性气藏改建地下储气库开展研究攻关,总结了低渗岩性气藏型储气库建库设计与运行优化关键技术。通过研究:建立了低渗岩性气藏型储气库选址评价技术与库址筛选指标体系,筛选出建库有利区10块;形成低渗岩性储气库指标设计技术,提升气井注采能力,扩大了运行压力区间,优选注采井型和部署模式,有效支撑了4座储气库优化设计;形成储气库全生命周期运行优化技术,持续提升在役储气库调峰能力,优选硫化氢采气淘洗模式,地质—井筒—地面一体化进行完整性管理与评价,实现了低渗岩性储气库的长期安全运行。3项关键技术成功应用于鄂尔多斯盆地SH、YU、SD和LW储气库的选址、设计与运行,方案设计指标与实际动态评价基本吻合,建成调峰能力7.5×10^(8)m^(3),实现了8年以上的安全运行。
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 7.5×10^(8)m^(3).In-service gas storages in the research areas have realized more than eight years of safe operation.
作者
李进步
夏勇
王德龙
赵晨阳
张建国
王蕾蕾
何依林
安文宏
LI Jinbu;XIA Yong;WANG Delong;ZHAO Chenyang;ZHANG Jianguo;WANG Leilei;HE Yilin;AN Wenhong(National Engineering Laboratory for Low⁃permeability Petroleum Exploration and Development,Xi’an 710018,China;Research Institute of Petroleum Exploration and Development,Changqing Oilfield Company,CNPC,Xi’an 710018,China)
出处
《天然气地球科学》
CAS
CSCD
北大核心
2023年第8期1442-1451,共10页
Natural Gas Geoscience
基金
中国石油重大科技专项“地下储气库地质与气藏工程关键技术研究与应用”(编号:2015E-4002)资助.
关键词
鄂尔多斯盆地
低渗岩性气藏
储气库
库址筛选
指标设计
运行优化
Ordos Basin
Low permeability lithological gas reservoir
Gas storage
Site selection
Index design
Operation optimization
作者简介
李进步(1974-),陕西咸阳人,硕士,正高级工程师,主要从事低渗—致密气田开发、储气库评价等研究.E-mail:ljb2_cq@petrochina.com.cn;通信作者:夏勇(1983-),山东惠民人,硕士,高级工程师,主要从事低渗—致密气田开发、储气库评价等研究.E-mail:xiayong1_cq@petrochina.com.cn.
