东胜气田致密气藏经济开发钻完井关键技术  

Key Technologies of Drilling and Completion for Economic Development of Tight Gas Reservoirs in Dongsheng Gas Field

作　　者：蒋新立 李明忠 张军义 董强伟 李德红 宋文宇 JIANG Xinli;LI Mingzhong;ZHANG Junyi;DONG Qiangwei;LI Dehong;SONG Wenyu(Technology Service Company,Sinopec Huabei Oilfield Service Corporation,Zhengzhou,Henan,450006,China)

机构地区：[1]中石化华北石油工程有限公司技术服务公司,河南郑州450006

出　　处：《石油钻探技术》2025年第1期10-16,共7页Petroleum Drilling Techniques

基　　金：中国石化科技攻关项目“致密气藏钻完井及压裂关键工程技术研究与应用”(编号:P20001)资助。

摘　　要：为了解决鄂尔多斯盆地东胜气田致密气藏钻完井过程中存在的漏塌频发、机械钻速低和固井完整性要求高等问题,在分析工程地质特征的基础上,开展了钻完井关键技术研究。优化了井身结构,开发了KCl-聚胺强封堵钻井液体系、KPD堵漏浆等,形成了漏塌高效预防与治理技术;优化设计了异形齿PDC钻头和钻井参数,优选了钻井工具,配套了井眼轨迹控制技术,形成了非均质地层钻井提速技术;开发了超低密度水泥浆、弹韧性防窜水泥浆,配套了全封固井、高效顶替和尾管悬挂及回接工艺,形成了低承压地层水平井固井技术。该钻完井关键技术在东胜气田94口水平井进行了集成应用,平均钻井周期缩短了34.4%、完井周期缩短了32.1%,固井质量优质率由26.7%提至84.3%。研究与应用结果表明,集成形成的东胜气田钻完井关键技术提速降本效果显著,为鄂尔多斯盆地北缘复杂构造致密气藏经济效益开发提供了工程技术保障。In order to solve the problems of complex leakage and collapse,low rate of penetration,and high requirements for cementing integrity during drilling and completion in Dongsheng Gas Field of Dongsheng Gas Field,key drilling and completion technologies were studied based on the analysis of engineering geological characteristics.Efficient prevention and treatment technologies for leakage and collapse were formed by optimizing the casing program and developing KCl−polyamine strong plugging drilling fluid system and KPD plugging slurry.Drilling speed enhancement technology for heterogeneous formation was developed by designing personalized PDC bits and drilling parameters,optimizing bottom hole assembly,and supporting wellbore trajectory control.Horizontal well cementing technology for low pressure-bearing formation was formed by developing ultra-low density cement slurry,elastic and ductile anti-channeling cement slurry,supporting technology of fully sealed cementing,and achieving efficient displacement,tail pipe suspension,and reconnection process.The above key technologies for drilling and completion have been integrated and applied in 94 horizontal wells in Dongsheng Gas Field,reducing the average drilling cycle by 34.4% and the completion cycle by 32.1%,increasing the cementing quality rate from 26.7% to 84.3%.The research and application results indicate that the key technologies for drilling and completion in Dongsheng Gas Field have a significant effect on speed improvement and cost reduction,providing engineering and technical support for the economic development of tight gas reservoirs in the northern edge of Ordos Basin.

关 键 词：致密气藏 防漏堵漏 钻井液 钻井提速 固井完整性 东胜气田 

分 类 号：TE242[石油与天然气工程—油气井工程] TE257