石油钻采工艺Issue(5)：46-48,57,4.DOI:10.13639/j.odpt.2015.05.012
涠洲某油田A9井钻孔管柱下入技术
Technique for borehole string running in Well A9 of one oilifeld in Weizhou
曾春珉 1韦龙贵 1孙桂宝 2许发宾 1张崇1
作者信息
- 1. 中海石油 中国 有限公司湛江分公司，广东湛江 524057
- 2. 中海油能源发展股份有限公司工程技术湛江分公司，广东湛江 524057
- 折叠
摘要
Abstract
Well A9 in Weizhou is a highly deviated production well in the Beibu Gulf of Beihai, Guangxi province. It was completed by running Ø178 mm string in openhole. Well A9 was characterized by high pressure coefifcient of target zone, high drilling lfuid density, great viscosity and shearing force, large dogleg, large hole inclination angle, long horizontal section and the target zones being mostly large sections of mudstone and shale. Comprehensive analysis shows that the major dififculties in completion technique include great friction when borehole string is run, dififculty in well control and reservoir protection, high surging pressure and circulation pressure during tripping in which may cause the suspension packer to set midway. In view of the above dififculties, analysis was conducted to the dififculties in running borehole string, the string running friction was calculated and the pipe string conifguration was optimized. The drilling and completion lfuid systems which could protect the reservoir and the suspension packer assembly with special structure were used, hence the pipe string was run smoothly and satisfactory oil well production was obtained. This technique provides a reference for the running of borehole string and tripping jobs under similar complex downhole conditions.关键词
大斜度井/复杂井况/钻孔管柱/完井/储层保护/悬挂封隔器总成Key words
highly deviated well/complex well conditions/borehole string/completion/reservoir protection/suspension packer assembly分类
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曾春珉,韦龙贵,孙桂宝,许发宾,张崇..涠洲某油田A9井钻孔管柱下入技术[J].石油钻采工艺,2015,(5):46-48,57,4.
