新疆吉木萨尔县准页4井钻探施工技术

Drilling Technology for Zhunye Well-4 in Jimusaer County of Xinjiang

摘要:

以新疆吉木萨尔县准页4井钻探工程为背景，从钻井井身结构、钻具组合、泥浆工艺、取心技术措施、井斜控制等方面，简要介绍了页岩气参数井采用石油钻机施工工艺流程。针对施工过程中遇到的大砾径覆盖层钻进、超长裸眼段钻进及钻井漏失等问题，通过采取优化钻具结构、调整泥浆粘切润滑性能、使用桥浆堵漏等技术措施，工程得以顺利完工，各项技术指标满足设计要求。总结了实践经验，可为该区大口径钻井施工提供经验借鉴。

关键词:页岩气;调查井;钻井工艺;钻井液

Abstract:

Based on the drilling engineering of Zhunye well-4 in Jimusaer County of Xinjiang, this paper introduces drilling rig construction technological processes of shale gas parameter well in aspects of wellbore structure, drilling tool assembly, mud technology, coring technology and well deviation control. In view of the problems encountered in the construction process, such as the overburden layer of large-sized boulders, super-long open hole section drilling and lost circulation, through optimizing drilling tool structure, adjusting mud viscous shearing and lubrication performances, using bridge slurry plugging and other technical measures, the project was smoothly completed and the technical indicators meet the design requirements. The practice experience is summarized, which can provide reference for the large diameter drilling construction in this area.

Key words:shale gas; survey wells; drilling processes; drilling fluid