New Progress and Development Prospect in Shale Gas Engineering Technologies of Sinopec
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摘要: 中国石化在持续完善中深层页岩气工程技术链的基础上，为满足深层页岩气及常压页岩气高效开发的需求，重点开展了基于甜点评价的地质工程一体化设计、随钻地层精细评价、优快钻井、新型油基钻井液、新型弹韧性水泥浆与泡沫水泥浆固井、体积压裂新工艺、新型分段压裂工具、高效压裂液、页岩气测试及产能评价和大型压裂机组研制等技术攻关，初步形成了深层和常压页岩气工程技术链，有力支撑了涪陵页岩气田产能建设和深层与常压页岩气的勘探开发。综述了中国石化页岩气工程技术最新进展，并结合我国页岩气勘探开发需求，提出了进一步完善中深层页岩气工程技术链、继续攻关完善形成深层页岩气工程技术链、发展形成常压页岩气工程技术链的页岩气工程技术发展思路。Abstract: Aiming at the effective development of deep shale gas reservoirs and those with normal pressure gradient,Sinopec has made breakthroughs in a series of techniques based on its continuous upgrading of engineering technology chain for middle-deep shale gas.Those techniques include geology and engineering integral design based on the sweet spot evaluation,detailed formation evaluation while drilling,optimum and fast drilling,novel oil-based drilling fluid,novel elastic and tough cement slurry and foam cement slurry,new techniques for stimulated reservoir volume,new staged fracturing tools,high-efficiency fracturing fluid system,shale gas testing and productivity evaluation and manufacturing of large-scale fracturing unit,which have primarily established the engineering technology chain in the development of deep shale reservoirs and those with normal pressure gradient and provided powerful support in the productivity construction of Fuling Shale Gas Field and the development of deep shale reservoirs and those with normal pressure gradient.This paper summarizes the latest progresses in shale gas engineering technologies of Sinopec,and in combination with the exploration and development tendency of shale gas reservoirs in China,puts forward the development path in improving the engineering technology chain for middle-deep shale gas reservoirs,setting up the engineering technology chain for deep shale gas reservoirs,and developing the engineering technology chain for shale gas reservoirs with normal pressure gradient.
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