塔河油田新三级结构井侧钻工艺技术探讨

Sidetracking technology of new three-stage well structure in Tahe Oilfield

于洋 郑江莉 刘晓民 李光乔 周伟

Yu Yang Zheng Jiangli Liu Xiaomin Li Guangqiao Zhou Wei

中国石油化工股份有限公司 西北油田分公司 工程技术研究院,乌鲁木齐 830011

Research Institute of Engineering Technology, SINOPEC Northwest Oilfield Company, Urumqi, Xinjiang 830011, China

塔河油田自2011年8月试验并推广新三级优化结构井，目前已完钻67口。考虑到该类井侧钻需求，该文提出了侧钻技术方案，即一开采用165.1 mm钻头钻穿泥岩，下入139.7 mm套管固井；二开采用118 mm钻头钻至设计井深；同时分析了139.7 mm套管固井可行性和侧钻二开小井眼定向钻井技术配套。通过分析论证，表明优选的侧钻技术方案可行，能够满足塔河油田新三级结构井侧钻需求。

67 wells have been drilled since a new three-stage well structure was tested and promoted in the Tahe Oilfield in August of 2011. Considering the sidetracking needs of these wells, a sidetracking technology program is presented in this paper. First, mudstone is drilled with 165. 1 mm bit and cemented with 139. 7 mm casing. Second, to reach design depth with 118 mm bit. Meanwhile, the feasibility of 139. 7 mm casing cementing and the directed drilling technique support of sidetracking slim hole are discussed. The optimized sidetracking technique program is proved feasible, and can meet the sidetracking requirements of new three-stage well structure in the Tahe Oilfield.

https://doi.org/10.11781/sysydz2013S1129