泡酸解卡技术在伊拉克某油田的实践与认识  

Practice and Understanding of the Technology of Acid Soaking in an Oil Field in Iraq

作　　者：那宇 汪文星 张磊 Na Yu;Wang Wenxing;Zhang Lei(CNOOC Energy Technology&Services Limited,Beijing,100027;China National Offshore Oil International Company Limited,Beijing,100027;Tianjin Branch of CNOOC(China)Co.,Ltd.,Tianjin,300459)

机构地区：[1]中海油能源发展股份有限公司,北京100027 [2]中国海洋石油国际有限公司,北京100027 [3]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《当代化工研究》2024年第5期122-124,共3页Modern Chemical Research

摘　　要：泡酸解卡是通过向卡钻位置注入一定量的酸液与地层中的碳酸盐充分接触反应,破碎带溶蚀卡钻处的地层岩屑等,从而达到钻具解卡的目的,是现场常用的卡钻处理技术之一。伊拉克某油田的A井五开钻进8-1/4"井眼通井作业过程中发生卡钻复杂情况,释放扭矩后活动钻具及震击器震击解卡均未成功解卡,考虑到地层岩性主要为石灰岩,尝试进行泡酸解卡并取得了成功。本文详细介绍了卡钻事故发生过程和泡酸解卡的作业程序,同时总结了泡酸解卡的作业经验与认识,为伊拉克油田乃至其他区块石灰岩地层钻井过程中出现的类似卡钻事故积累了宝贵经验。Stuck pipe releasing with acid soaking is to inject a certain amount of acid to fully react with the carbonate in the formation,breaking and dissolving the rock chips in the formation at the jammed drilling location,so as to release the drilling tools,which is one of the commonly used jammed drilling treatment techniques on the site.The A well in Iraq Oilfield,was drilled into an 8-1/4"borehole,and during the drilling operation,there was a complicated stuck accident.Torque release,moving the drilling tool and shocking with a vibrator did not succeed in releasing the stuck pipe.Considering that the lithology of the formation is mainly limestone,an attempt was made to acid soaking,which was successful.This paper describes in detail the occurrence of this stuck drilling accident,the operation procedure of acid soaking,and summarizes the experience of the operation of acid soaking,which accumulates valuable experience for the similar stuck drilling accidents occurring during the drilling process of the limestone formation in the Iraq Oilfield and other blocks.

关 键 词：破碎带 复杂情况 卡钻 石灰岩 泡酸解卡 

分 类 号：TE28[石油与天然气工程—油气井工程]