石油钻采工艺Issue(4)：18-21,4.DOI:10.13639/j.odpt.2014.04.005
大尺寸井眼钻井工艺在渤海油田某探井中的应用和突破
Application and breakthrough of large-size hole drilling technology in some exploration well in Bohai Oilfield
叶周明 1刘小刚 2崔治军 2侯冠中 2徐鲲 1刘峰2
作者信息
- 1. 中海油能源发展工程技术分公司，天津 300452
- 2. 中海石油 中国 有限公司天津分公司，天津 300452
- 折叠
摘要
Abstract
3D pressure study and the data of drilled wells in vicinity prove that there is high temperature and high pressure in the middle and deep formations in some block of Bohai Oilfield. While drilling some exploration well in this block, the formation pressure coefficient was 1.3, max. 1.65, and bottom temperature was up to 178 ℃. The wellbore configuration was optimized based on formation pressure and geologic features. When the Ø444.5 mm large hole was drilled to the top of Guantao Formation with a vertical depth of 2 700 m, the risk in drilling of HTHP formation in the middle and deep formations could be mitigated. In Bohai area, it was the first time that Ø444.5 mm hole was drilled to 2 700 m. Through technologies like BHA optimization and trajectory control, drilling with seawater/bentonite fluid, optimized cement slurry system and fluid column structure, etc., breakthroughs were made in deviation control and fast drilling, drilling fluid technology and cementing technology while drilling this large size hole, which provides guarantee for drilling into the HTHP section and for conducting geologic assessment.关键词
大尺寸井眼/防斜打快/钻井液工艺/固井技术Key words
large size hole/deviation control and fast drilling/drilling fluid technology/cementing technology分类
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叶周明,刘小刚,崔治军,侯冠中,徐鲲,刘峰..大尺寸井眼钻井工艺在渤海油田某探井中的应用和突破[J].石油钻采工艺,2014,(4):18-21,4.
