大庆石油地质与开发2024，Vol.43Issue(4)：191-203,13.DOI:10.19597/J.ISSN.1000-3754.202405065
四川盆地页岩气地质工程一体化高效开发关键技术与装备
Key techniques and equipment for efficient integrated geoscience-engineering development of shale gas in Sichuan Basin
摘要
Abstract
The complex characteristics of shale gas in Sichuan Basin including complex reservoir structure,deep burial,thin sweet spot reservoirs,much-developed fractures/faults,large in-situ stress difference,high fracturing pressure and rapid production decline are rare in the world.This makes existing North American shale gas develop-ment techniques difficult to meet the special requirements of Sichuan Basin,and independent research is urgently needed for efficient shale gas development techniques suitable for complex geological conditions of Sichuan Basin.Aiming at challenges of key techniques and equipment for scientific evaluation of geological sweet spots and engi-neering sweet spots in shale gas reservoirs,efficient drilling of long horizontal section wells,staged volume fractur-ing and pressure-controlled efficient development in complex geological conditions in Sichuan Basin,based on re-search idea of integrated geoscience-engineering and taking geological modeling as foundation,new methods are in-vented for evaluating"geology-engineering"dual sweet spots in complex shale gas reservoirs,efficient pressurizing and accelerating and dynamic multi-factors individualized bit design for hard-to-drill strata and parameter optimiza-tion for integrated geoscience-engineering staged volume fracturing based on dual sweet spots.High-performance key tools and equipment are independently developed including a series of individualized efficient composite bits,radio-controlled toe fracturing sliding sleeves,fully-soldering bridge plugs and specialized compressors,forming key techniques and supporting equipment with independent intellectual property rights for efficient integrated geo-science-engineering development of shale gas in Sichuan Basin.The research achievements has been applied to 834 well times in large scale in Changning,Weiyuan and Fuling shale gas fields in Sichuan Basin and support the prog-ress of key techniques and equipment for efficient development of shale gas in China by extending bit life,reducing drilling cycles,improving fracturing efficiency and increasing single-well testing production.关键词
四川盆地/页岩气/地质工程一体化/双甜点评价/个性化钻头/分段体积压裂/专用压缩机Key words
Sichuan Basin/shale gas/integrated geoscience-engineering/dual sweet spots evaluation/individual-ized bit/staged volume fracturing/specialized compressor分类
能源科技引用本文复制引用
刘清友,朱海燕,唐煊赫,佘朝毅,欧成华,刘勇..四川盆地页岩气地质工程一体化高效开发关键技术与装备[J].大庆石油地质与开发,2024,43(4):191-203,13.基金项目
国家自然科学基金重大仪器项目"井下机器人智能钻完井模拟实验系统研制"(52327803) （52327803）
国家自然科学基金重大项目课题"开采过程多场时空演变规律与流动调控方法"(52192622) （52192622）
国家自然科学基金面上项目"页岩气立体加密井组压裂复杂裂缝扩展与井间干扰机理研究"(52374004) （52374004）
国家重点研发计划"大型油气藏CO2压裂埋存全流程关键技术指标体系及标准化"(2023YFF0614102) （2023YFF0614102）
国家重点研发计划"CO2地质封存协同枯竭页岩储层增渗开采技术"(2023YFE0110900). （2023YFE0110900）
