西南石油大学学报（自然科学版）2025，Vol.47Issue(4)：87-95,9.DOI:10.11885/j.issn.1674-5086.2023.06.17.01
致密砂岩气藏气体钻井高效建产的机理分析及展望
Mechanism Analysis and Prospect of Efficient Production of Gas Drilling in Tight Sandstone Gas Reservoirs
摘要
Abstract
Gas drilling for the development of tight sandstone gas reservoirs is of natural advantages in avoiding reservoir damage.However,the lack of clear understanding of its mechanisms introduces uncertainties regarding its ability to achieve efficient production.To address this issue,a systematic review was conducted on the experiences and lessons learned from gas drilling for the development of tight sandstone gas reservoirs.The gas drilling practices in the Dibei and western Sichuan regions were used as examples.Based on drilling monitoring data such as methane concentration and outlet humidity,and through the analysis of cuttings' X-ray diffraction and logging data,the mechanisms for efficient production were examined.The study revealed that productive gas points in high-yield wells corresponded to the height of the sandstone-shale lithological interface,confirming that the derived fracture network system serves as the primary gas storage space and gas production pathway,making it a crucial target for wellbore trajectory.Influenced by fault zones,water from the lower part of aquifers could migrate to the upper part of the fault drop zone.Therefore,well deployment should be based on high structural points and fault uplift zones,taking into account reservoir evolution and tectonic movement history for optimization.It is believed that further in-depth research in engineering geological mechanics is needed,focusing on the effectiveness of lithological interface fractures,the relationship between gas and water in aquifers,and their impacts.Additionally,the development of gas drilling and completion techniques and tools for complex environments should be pursued.关键词
致密砂岩气藏/气体钻井/岩性界面/井位部署/储层保护Key words
tight sandstone gas reservoir/gas drilling/lithological interface/wellbore deployment/reservoir protection分类
能源科技引用本文复制引用
李皋,张毅,李红涛,孟英峰,杨旭..致密砂岩气藏气体钻井高效建产的机理分析及展望[J].西南石油大学学报（自然科学版）,2025,47(4):87-95,9.基金项目
国家自然科学基金(61731016,51674217,51904264) （61731016,51674217,51904264）
四川省自然科学基金(2023NSFSC0929) （2023NSFSC0929）
