水基钻井废泥浆破胶脱稳处理工艺研究  

Study on gel breaking destabilization treatment process of water-based drilling waste mud

作　　者：赵艳 张太亮[1] 范劲 ZHAO Yan;ZHANG Tai liang;FAN Jin(School of chemistry and chemical engineering,Southwest Petroleum University,Sichuan Chengdu 610500;Drilling fluid technical service company,CNPC Chuanqing Drilling Engineering CO.Ltd,Sichuan Chengdu 610051)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]中国石油集团川庆钻探工程有限公司钻井液技术服务公司,四川成都610051

出　　处：《内蒙古石油化工》2022年第5期5-10,共6页Inner Mongolia Petrochemical Industry

摘　　要：随着复杂油气藏的开采,要求钻井液性能越来越稳定,因此产生的水基钻井废弃泥浆稳定性更高,增加了废泥浆处理难度。在对水基钻井废泥浆进行物性分析的基础上,通过对破胶脱稳剂、破胶工艺参数、分离工艺等优化工艺研究,得到“破胶-固液分离”工艺处理水基钻井废泥浆。研究结果表明,优选CPC作为钾聚磺和聚合物体系废泥浆的破胶剂,CPC加量分别在2.4~2.8wt%、0.3~0.34wt%,其脱水率分别高达86.51%、52.17%,色度分别为50倍、120倍;同时采用扫描电镜对废泥浆破胶前后泥饼的微观形貌分析进行了破胶机理研究。With the exploitation of complex oil and gas reservoirs,the performance of drilling fluid is required to be more and more stable.Therefore,the stability of water-based drilling waste mud is higher,which increases the difficulty of waste mud treatment.Based on the analysis of physical properties of water-based drilling waste mud,through the optimization of gel breaking destabilizing agent,gel breaking process parameters and separation process,the“gel breaking and solid-liquid separation”process is obtained to treat water-based drilling waste mud.The results show that CPC is selected as the gel breaker of potassium polysulfonate and waste mud of polymer system,the dosage of CPC is 2.4~2.8wt%and 0.3~0.34wt%respectively,the dehydration rate is 86.51%and 52.17%respectively,and the chromaticity is 50 times and 120 times respectively.As the same time,the micro morphology of mud cake before and after gel breaking of waste mud was analyzed by scanning electron microscope,and the gel breaking mechanism was studied.

关 键 词：破胶剂 水基钻井废泥浆 固液分离 绿色油气勘探 

分 类 号：X741[环境科学与工程—环境工程]