耐高温杂化凝胶微粒随钻防漏体系  

Leakage-control while drilling with novel hybrid gel particles system

作　　者：王波[1,2] 孙金声 白英睿 李伟[2] 吕开河 王金堂[1] 金家锋 张文哲[2] WANG Bo;SUN Jinsheng;BAI Yingrui;LI Wei;Lü Kaihe;WANG Jintang;JIN Jiafeng;ZHANG Wenzhe(School of Petroleum Engineering in China University of Petroleum (East China), Qingdao 266580, China;Research Institute of Yanchang Petroleum(Group)Company Limited,Xi’an 710075,China)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]陕西延长石油(集团)有限责任公司研究院,陕西西安710075

出　　处：《中国石油大学学报（自然科学版）》2022年第2期94-102,共9页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金重大项目(51991361);国家自然科学基金面上项目(52074327);国家科技重大专项(2017ZX05039-003);陕西延长石油(集团)科技专项(YJGCS19SKF0001)。

摘　　要：研发一种具有抗高温、高弹性、强韧性等特点的杂化凝胶新材料,通过高温老化、热重等方法优选出杂化凝胶体系为20%AM(丙烯酰胺)+0.8%锂皂土+3%MPTMS(r-甲基丙烯酰氧基丙基三甲氧基硅烷)+20%MAA(甲基丙烯酸)+0.15%APS(过硫酸铵),在此基础上引入交联剂BIS(N,N-亚甲基双丙烯酰胺)和BWL(大分子交联剂)以提高其杂化凝胶体系的强度,构建杂化凝胶微粒随钻防漏体系,并进行杂化凝胶微粒老化前后的砂床防漏试验。结果表明当BIS质量分数为0.3%或BWL质量分数为2.0%时,体系抗温性能最佳;当BIS交联杂化凝胶颗粒的质量分数高于4%或BWL交联杂化凝胶颗粒质量分数高于3%时,交联杂化凝胶防漏体系在140℃条件下均表现出良好的防漏性能。A new hybrid-gel with high-temperature tolerance,high elasticity,and excellent tenacity was developed.The optimal hybrid-gel was be obtained by high-temperature aging tests and thermogravimetry 20%AM+0.8%lithium bentonite+3%MPTMS+20%MAA+0.15%APS.Based on this,the crosslinkers BIS and BWL were introduced to improve the strength of the hybrid-gel system,and the hybrid gel particle drilling while leak prevention system was constructed.The sand bed leakage prevention test of hybrid gel particles before and after aging was carried out as well.The results show that the hybrid-gel particle system exhibits excellent temperature-resistance when adding 0.3%BIS or 2.0%BWL.When the mass fraction of BIS crosslinked hybrid gel particles is higher than 4%or BWL crosslinking hybrid gel particle mass fraction is higher than 3%,the crosslinking hybrid gel leak proof system has good leakage resistance at 140℃.

关 键 词：随钻防漏 杂化凝胶 耐高温 稳定性 

分 类 号：TE242[石油与天然气工程—油气井工程] TE39