东胜气田二级井身结构水平井钻完井关键技术  

Key techniques for drilling and completion of secondary casing program of horizontal wells in Dongsheng gas field

作　　者：张永清[1] ZHANG Yongqing(Petroleum Engineering Technology Research Institute of North China Oil and Gas Company,SINOPEC,Zhengzhou,Henan 450006,China)

机构地区：[1]中国石化华北油气分公司石油工程技术研究院,河南郑州450006

出　　处：《石油地质与工程》2020年第5期98-101,共4页Petroleum Geology and Engineering

基　　金：国家科技重大专项“低丰度致密低渗油气藏开发关键技术”(2016ZX05048)。

摘　　要：为进一步降本增效,在东胜气田开展了二级井身结构水平井及套管固井完井优化试验。基于施工难点,结合力学理论分析,开展室内实验,形成了理化复合防漏防塌、高效PDC钻头选型、长裸眼段固井、井深结构优化等关键技术。现场应用表明,6口井施工顺利,无复杂情况发生。与同期三级井身结构水平井相比,钻井周期缩短34.98d、机械钻速提高1.78 m/h,单井钻完井工程费用节约35.7万元以上。In order to further reduce costs and increase efficiency, the tests on secondary casing program of horizontal wells and the optimization of casing cementing and completion were carried out in Dongsheng gas field. Based on the construction difficulties, combined with the theoretical analysis of mechanics, and the key technologies such as physical-chemical compound leakproof and collapse prevention, PDC bit with high efficiency selection techniques, and long open hole cementing techniques were optimized formed by laboratory experiment and mechanics analysis. The field application shows that the construction of six wells is smooth and no complex situation occurs. Compared with the three-stage casing program of horizontal wells in the same period, the drilling cycle is shortened by 34.98 d, the mechanical drilling rate is increased by 1.78 m/h, and the cost of drilling and completion of a single well is saved by more than 357,000 yuan.

关 键 词：东胜气田 水平井 二级井身结构 井壁稳定 提速增效 

分 类 号：TE243[石油与天然气工程—油气井工程]