钻井液与完井液2017，Vol.34Issue(5)：50-53,4.DOI:10.3969/j.issn.1001-5620.2017.05.009
自由水钻井液体系在大斜度井段中的优化与应用
Optimization and Application of Drilling Fluid with Low Free Water in High Angle Well Section
郭海峰 1付顺龙 1陈波 1黄召 2张海山 2王磊 2廖江东2
作者信息
- 1. 中海油田服务股份有限公司油田化学事业部上海作业公司,上海 200335
- 2. 中海石油(中国)有限公司上海分公司,上海 200335
- 折叠
摘要
Abstract
Low free water drilling fluid was required to drill the φ311.15 mm hole section in a gas field in East China Sea. The drilling operation was successful, but the existence of interbedded mudstone and sandstone has resulted in high friction when RIH and excessive torque in the early stage of development. In later stage development of the oilfield, more and more highly deviated wells were drilled, borehole wall instability and borehole cleaning were becoming increasingly urgent because of high well angle and long open hole. In dealing with these problems, sodium chloride was introduced into the low free water drilling fluid to reduce the activity of water base and to enhance the inhibitive capacity of the drilling fluid. Other measures taken included reducing filtration rate to minimize shale swelling. Field operation showed that after the introduction of sodium chloride, the property of the low free water drilling fluid became more stable, and the stability of wellbore was improved, realizing smooth tripping of drill pipes. With these measures, problems in drilling high angle well section through thick shale formation have been resolved, drilling time saved, and the efficiency of drilling operation increased. The technology has provided good technological support for drilling wells with similar borehole profile through formations of the same rock type in East China Sea area.关键词
低自由水钻井液/大斜度井/活度/反渗透Key words
Low free water drilling fluid/High angle well/Activity/Reverse osmosis分类
能源科技引用本文复制引用
郭海峰,付顺龙,陈波,黄召,张海山,王磊,廖江东..自由水钻井液体系在大斜度井段中的优化与应用[J].钻井液与完井液,2017,34(5):50-53,4.
