天然气工业2025，Vol.45Issue(4)：70-84,15.DOI:10.3787/j.issn.1000-0976.2025.04.006
准噶尔盆地非常规储层水力压裂监测技术进展
Progress in monitoring technologies for unconventional reservoir hydraulic fracturing in the Junggar Basin
摘要
Abstract
The Junggar Basin is rich in unconventional oil and gas resources,which has significant exploration and development potential,however,in the process of hydraulic fracturing,there exist challenges such as limited stimulated reservoir volume,low degree of reserve recovery,and high development costs.Therefore,it is crucial to reveal the distribution pattern of hydraulic fractures in the underground reservoirs to address the difficulties in the design optimization of hydraulic fracturing.After systematically summarizing the key insights from the monitoring tests of unconventional reservoir hydraulic fracturing in North America,this paper focuses on the on-site monitoring of hydraulic fracturing in the tight conglomerate reservoirs in Mahu and the shale oil reservoirs in Jimusar,systematically reviews the results of downhole eagle-eye monitoring,DAS external fiber optic monitoring and highly deviated well coring tests,and reveals the stimulation mechanisms of unconventional reservoirs,so as to provide a basis for the fracturing design optimization and fracture monitoring interpretation of domestic unconventional oil and gas reservoirs.The following results are obtained.First,stronger reservoir heterogeneity can result in greater difference in erosion degree of different clusters of perforation within the horizontal section and more uneven propagation pattern of multiple fractures.Second,increasing the displacement can effectively promote the uniform stimulation of multiple fractures,but the differentiated perforation arrangement and the temporary plugging and fracturing within one stage cannot completely avoid the uneven propagation of multiple fractures.Third,the downhole conglomerate coring results in Mahu indicate that hydraulic fractures are unevenly distributed in space,with the number of hydraulic fractures significantly exceeding the number of perforation clusters.Fourth,the number of gravel penetrating fractures approximately double that of gravel bypassing fractures in the reservoir.Both types of fractures are primarily of high angle,with fracture strike accordant with the direction of maximum horizontal principal stress.Fifth,proppant is concentrated within 10-23 m horizontally and 20-25 m vertically from the wellbore.Sixth,larger gravel particles and a greater included angle between the gravel arrangement direction and the fracture propagation direction make it easier for hydraulic fractures to penetrate gravels.In conclusion,the contribution to liquid production after fracturing varies dynamically with stages and clusters,so it is necessary to further research the relationships between reservoir quality,fracturing stimulation degree,and post-fracturing productivity.What's more,the on-site scale monitoring results are of great significance to improving the optimized design of unconventional reservoir fracturing and promoting the advancement of hydraulic fracturing technologies,and it is still necessary to plan an overall technological system and promote the studies on the hydraulic fracturing test field.关键词
准噶尔盆地/玛湖砾岩油藏/吉木萨尔页岩油/水力压裂现场监测试验/井下鹰眼监测/分布式光纤监测/大斜度井取心试验Key words
Junggar Basin/Conglomerate oil reservoir in Mahu/Shale oil in Jimusar/On-site monitoring test of hydraulic fracturing/Downhole eagle-eye monitoring/Distributed fiber optic monitoring/Highly deviated well coring test分类
石油、天然气工程引用本文复制引用
张士诚,李建民,许江文,谢勃勃,王明星,吕振虎,李嘉成,杨鹏..准噶尔盆地非常规储层水力压裂监测技术进展[J].天然气工业,2025,45(4):70-84,15.基金项目
国家自然科学基金企业创新发展联合基金集成项目"陆相断陷湖盆页岩油富集机理与立体开发方法"(编号:U24B6002). （编号:U24B6002）
