摘要
随着油气勘探开发工作的逐步深入以及向深层、复杂地层、非常规储层、海洋等领域的拓展,油气井固井难度显著增加,对固井后水泥环长期密封性能要求越来越高,固井工作液体系的研发及应用面临新的挑战。从长封固段大温差水泥浆体系、韧性水泥浆体系、防腐蚀水泥浆体系、稠油热采井固井水泥浆体系、自修复(自愈合)水泥浆体系、深水固井水泥浆体系及功能性前置液体系,总结了近年来固井工作液体系的技术进展。根据复杂井固井作业面临的挑战,从固井新材料及功能性水泥浆体系两方面提出了今后的攻关方向。
As the petroleum exploration and development are proceeding and extending to deeper, complex formations, nonconventional reservoirs and offshore exploration and development, the well cementing is becoming more and more difficult. More and more rigorous requirements are imposed on the long time airtightness of cement sheath, and the development of new cementing fluids is facing new challenges. This paper discusses the progress made in recent years about the functional cementing fluids, such as cement slurries for long intervals with large temperatures differences, cementing slurries with good toughness, corrosion inhibitive cement slurries, cement slurries for heavy oil thermal recovery wells, self-healing cement slurries, cement slurries for wells in deep water area, and the functional pre pad fluids. Based on the challenges encountered in cementing wells with complex problems, the studies to be performed on new cementing materials and functional cementing fluids in the future are presented in the paper.
出处
《钻井液与完井液》
CAS
北大核心
2016年第4期1-7,共7页
Drilling Fluid & Completion Fluid
基金
国家科技重大专项项目21课题4"复杂地质条件下深井钻井液与高温高压固井技术研究"(2011ZX05021-004)
关键词
固井
水泥浆
前置液
水泥外加剂
固井材料
Well cementing
Cement slurry
Pre pad fluid
Cement additive
Cementing material
