镶嵌屏蔽钻井液滤饼对固井二界面胶结质量的影响与提高措施  

Influence of Mosaic Shielding Drilling Fluid Filter Cake on the Cementing Quality of Second Interface and Improvement Method

作　　者：何瑀婷 赵殊勋 高启轩 李明泽 吕宝玉 左天鹏 郑怡杰 程小伟[1] HE Yuting;ZHAO Shuxun;GAO Qixuan;LI Mingze;LYU Baoyu;ZUO Tianpeng;ZHENG Yijie;CHENG Xiaowei(Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500;The Second Cementing Division of the Bohai Drilling and Exploration Company,Tianjin 300280;Exploration Division,Tuha Oilfield Company,PETROCHINA,Hami,Xinjiang 839009;Yao Bai Special Cement Technology Research and Development Company,Xi’an,Shaanxi 710100)

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [2]中国石油集团渤海钻探第二固井分公司,天津300280 [3]中国石油吐哈油田分公司勘探事业部,新疆哈密839009 [4]尧柏特种水泥技术研发有限公司,西安710100

出　　处：《钻井液与完井液》2022年第2期227-233,共7页Drilling Fluid & Completion Fluid

基　　金：四川省区域创新合作项目“页岩气水平井固井用原位增韧水泥研究与应用”(2021YFQ0045)。

摘　　要：固井质量的好坏是决定后期开采作业能否顺利进行的关键,钻井过程中形成的滤饼会影响固井二界面的胶结质量,因此通过固井二界面胶结强度的评价方法,分析镶嵌屏蔽钻井液滤饼对固井二界面胶结质量的影响,结合SEM和EDS进一步说明钻井液形成的虚滤饼因为其疏松的凝胶状态导致固井二界面质量降低。针对以上问题,选用脂肪醇聚氧乙烯醚(AEO)、脂肪酸山梨醇酐聚氧乙烯醚60(T60)、聚氧乙烯烷基酚醚(OP)3种渗透剂对镶嵌屏蔽钻井液滤饼进行冲洗,实验结果表明,AEO对镶嵌屏蔽钻井液滤饼的冲洗效果最好,滤饼通过AEO冲洗后,固井二界面胶结强度增大33.34%~166.67%,提高了固井二界面的胶结质量。The quality of cementing is the key to decide whether the later mining operation can proceed smoothly.The filter cake formed during drilling will affect the cementing quality of the second interface.Therefore,this paper analyzes the influence of embedded shielding drilling fluid filter cake on the cementing quality of the second interface through the evaluation method of the cementing strength of the second interface.Combined with SEM and EDS,it further shows that the virtual filter cake formed by drilling fluid will reduce the cementing quality of the second interface because of its loose gel state.Aiming at the above problems,this paper selects AEO,T60 and OP as penetrant to flush the filter cake of embedded shielding drilling fluid.The experimental results show that AEO has the best flushing effect on the filter cake of embedded shielding drilling fluid.After the filter cake is flushed by AEO,the cementing strength of the second interface of cementing is increased by 33.34%~166.67%,which greatly improves the cementing quality of the second interface of cementing.

关 键 词：镶嵌屏蔽钻井液 固井二界面 胶结强度 渗透剂 

分 类 号：TE256[石油与天然气工程—油气井工程]