新型促页岩气解吸附体系研究  

Study on New System Used for Acceleration of Shale Gas Desorption

作　　者：蒋官澄[1,2] 范劲[1,2] 李颖颖[1,2] 吴雷泽[3] 张志行[1,2] 

机构地区：[1]油气资源与探测国家重点实验室中国石油大学,北京102249 [2]石油工程教育部重点实验室中国石油大学,北京102249 [3]中石化江汉油田分公司,湖北武汉430035

出　　处：《特种油气藏》2014年第3期116-119,156-157,共4页Special Oil & Gas Reservoirs

基　　金：国家自然科学创新研究群体项目"复杂油气井钻井液完井基础研究"(51221003);国家"863"项目"海上大位移井水平井钻井液关键技术研究"(2012AA091502);国家"863"项目"致密气藏高效钻井技术研究"(2013AA064803);国家自然科学基金面上项目"复杂地层条件下提高井壁稳定性新方法研究"(51074173);石油化工基金联合申报项目"页岩气钻探中的井壁稳定及高效钻完井基础研究"(U1262201)

摘　　要：页岩气的赋存方式以吸附态为主,若提高页岩气井的产量,则须使吸附态的页岩气从页岩内表面解吸附变为游离态。升高温度和注入CO2均可提高页岩气的解吸率,为尽可能提高页岩层内吸附气的采收率,首次将2种促解吸方法结合在一起,开发出自生热自生CO2体系,并对该体系进行了反应物加量优化、腐蚀性和促解吸效果的评价。结果表明,该体系能够产生大量的热和CO2气体,二者对于提高页岩气解吸率都有良好的效果。Shale gas occurs mainly in a mode of adsorption,so to increase the production of a shale gas well,it is required to desorb the shale gas in the state of adsorption into free state. Both temperature increase and CO2 injection can increase the desorption rate of shale gas. To maximize the recovery factor of the gas adsorbed in shale rock,the two desorption methods were combined for the first time and a self CO2 and heat generation system has been developed. Also,the reactant dosage has been optimized for the system,and the corrosion and the result of desorption acceleration of the system have been evaluated. It is indicated from the results that the system can generate both massive heat and CO2,which can increase desorption rate of shale gas.

关 键 词：页岩气 解吸附 温度 CO2 腐蚀性 

分 类 号：TE377[石油与天然气工程—油气田开发工程]