钻井液与完井液2023，Vol.40Issue(5)：658-664,7.DOI:10.12358/j.issn.1001-5620.2023.05.016
星探1井韧性防窜水泥浆技术
Study and Application of a Tough Anti-Channeling Cement Slurry for Well Xingtan-1
摘要
Abstract
The well Xingtan-1 is a deep horizontal well drilled in the Shuangyang district of Changchun city by the Jilin Oilfield.This well has a total depth of 5,758 m and horizontal section of 2,015 m.Studies were conducted on two problems,which are mud losses and strict requirement for the impact resistance of the cement sheath to withstand the effects of large scale fracturing jobs.A toughness enhancing anti-channeling agent TA-1 is developed.TA-1 is a product with"core-shell"structure,and is used to formulate an anti-channeling cement slurry with good toughness.The molecules of TA-1 have elastic cores and flexible molecular chains,and are able to improve the toughness of the cement slurry and form films.Test results of the performance of the cement slurry show that the slurry has good stability,with thickening time adjustable between 150 min and 350 min.The SPN value of the cement slurry is 1.15,indicating the cement slurry has good anti-channeling capacity.TA-1 reduces the elastic modulus of the set cement by 29.5%and enhances the impact resistance of the set cement by 16.4%.A cement slurry treated with TA-1 has 24-hour strength of greater than 20 MPa.Well cementing with this anti-channeling cement slurry on the well Xingtan-1 is successful,helping solve the problems of gas channeling through the cement sheaths and cracking of set cement during fracturing operation.关键词
水泥浆/防窜/韧性/力学性能/固井/星探1井Key words
Cement slurry/Anti-channeling/Toughness/Mechanical property/Well cementing/Well Xingtan-1分类
能源科技引用本文复制引用
冯瑞阁,李玮,孟仁洲,王俊杰..星探1井韧性防窜水泥浆技术[J].钻井液与完井液,2023,40(5):658-664,7.基金项目
中国石油集团十四五前瞻性基础性重大科技项目"复杂超深井固井密封完整性技术研究"(2021DJ4105) （2021DJ4105）
中国石油集团科学研究与技术开发项目"超深井安全固井关键材料与工具研发"(CPET202307). （CPET202307）
