气体钻井地层出水仿生处理技术研究  

Research of Biomimetic Treatment Technology for Formation Water Producing During Gas Drilling

作　　者：舒小波 万里平[3] 陈晔希 SHU Xiaobo WAN Liping CHEN Yexi(Key Laboratory of Siehuan Province for Oil ＆ Gas Field Applied Chemistry, Guanghan 618300, Sichuan, China Research Institute of Drilling ＆ Production Engineering Technology, Chuanqing Drilling Engineering Co. , Ltd. of CNPC, Guanghan 618300, Sichuan, China State Key Laboratory of Oil ＆ Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, China Downhole Service Company, Chuanqing Drilling Engineering Co. , Ltd. of CNPC, Chengdu 610051, Sichuan, China)

机构地区：[1]油气田应用化学四川省重点实验室,四川广汉618300 [2]中国石油川庆钻探工程有限公司钻采工程技术研究院,四川广汉618300 [3]西南石油大学"油气藏地质及开发工程"国家重点实验室,四川成都610500 [4]中国石油川庆钻探工程有限公司井下作业公司,四川成都610051

出　　处：《西安石油大学学报（自然科学版）》2017年第5期73-77,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金重点项目"气体钻井技术基础研究"(51134004)

摘　　要：针对气体钻井钻遇地层出水以后泥页岩自吸水导致黏土水化引发的井壁失稳问题,提出了气体钻井泥页岩表面仿生处理工艺技术,研制了一种仿生泡沫处理液。室内综合性能评价表明,该仿生泡沫处理液具有良好的泡沫性能,其抗盐、抗油、抗温、抗岩屑污染能力强,同时展现出强效、持久的泥页岩抑制能力。采用该仿生泡沫处理液处理后的泥页岩岩样,可将泥页岩表面的润湿性能由亲水性向疏水性转变,从而起到阻止地层水液相侵入泥页岩地层内部的目的,大幅度提高泥页岩在清水中的强度,达到维持泥页岩地层井壁稳定的目的。After formation water production during gas drilling,the shale self-absorbing effect can cause clay hydration and finally result in wellbore instability. To solve this problem,a biomimetic treatment technology of shale surface was proposed,and a biomimetic foam treatment fluid was developed. The experiment results in laboratory show that the biomimetic foam treatment fluid has a good foaming property and strong resistance to salt,oil,high temperature and cuttings pollution,and it has also powerful and persistent shale inhibiting capacity. After treated by the biomimetic foam treatment fluid,the wettability of shale surface can change from hydrophilic to hydrophobic to prevent formation water from invading shale,significantly improve the strength of shale in fresh water and maintain the stability of wellbore.

关 键 词：泥页岩 井壁稳定 地层出水 仿生处理 

分 类 号：TE254[石油与天然气工程—油气井工程]