耐温抗油泡沫钻井液技术及其在非常规水平井的应用  

High Temperature and High Oil Content Foam Drilling Fluid Technology and Application in Unconventional Horizontal Well

作　　者：明玉广 蓝强 张斌 杨景利 周守菊 

机构地区：[1]中石化胜利石油工程有限公司钻井工艺研究院

出　　处：《钻井液与完井液》2013年第5期9-12,95,共4页Drilling Fluid & Completion Fluid

基　　金：国家重大专项"低渗油气田高效开发钻井技术"课题四"低渗油气田储层保护技术"(2011ZX05022-004)

摘　　要：目前胜利油田的非常规低压、低渗油气藏较多,对欠平衡钻井技术要求越来越高,普通泡沫钻井液抗温性较差,且在含油井段不能使用。为扩展该项技术的适用性,研制出性能优良的AC-2发泡剂,并优选出泡沫钻井液的配方,该体系的抗温达180℃,抗油30%以上。该钻井液技术在盐227-1HF非常规水平井进行了首次应用,结果表明,该体系能够满足地层温度137℃和含油20%条件下的水平井施工要求,钻井过程顺利,泡沫性能稳定、地面消泡方法简单,全井无任何事故,平均钻速提高50%以上。In Shengli oilfield,there are more and more low pressure and permeability reservoirs,so the underbalanced drilling technology is used more widely,but common foam drilling fluid cannot be used in reservoir section.A new foaming agent AC-2 is developed,and a formulation of foam drilling fluid system is optimized,which can be used at conditions of 180℃ and oil content of 30%.The application in unconventional horizontal well Yan227-1HF shows that it can be successfully used at 137℃and oil content of 20%,and the average ROP is increased by more than 50%.

关 键 词：泡沫钻井液 耐高温 抗油 非常规水平井 储层钻进 

分 类 号：TE254.3[石油与天然气工程—油气井工程]