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抗温180 ℃ 水包油钻井液研究及应用

断块油气田

2013年 20卷第02期

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Title

Study and application of anti-temperature 180 ℃ oil-in-water drilling fluid

作者

马文英刘彬卢国林王玉海李保慧

单位

中国石化集团中原石油勘探局钻井工程技术研究院，河南濮阳 457001 中联煤层气有限责任公司晋城分公司，山西晋城 048000 中国石化集团中原石油勘探局钻井一公司，河南濮阳 457331

Organization

Research Institute of Drilling Engineering Technology, Zhongyuan Petroleum Exploration Bureau, SINOPEC, Puyang 457001, China Jincheng Company, PetroChina Coalbed Methane Company Limited, Jincheng 048000, China No.1 Drilling Company, Zhongyuan Petroleum Exploration Bureau, SINOPEC, Puyang 457331, China

摘要

针对低压储层钻井保护油气层的要求，通过室内研究形成了油水比为7∶3~3∶7的水包油钻井液，密度在0.88~0.97 g/cm3可调，抗温达180 ℃，具有良好的乳化稳定性和流变性，防塌能力强。在城深7井和城深9井的现场应用结果显示，研究的水包油钻井液性能稳定，具有良好的抗高温、抗CO2污染能力，有利于安全快速钻井和发现、保护油气层，能够满足深井近平衡、欠平衡钻井的要求。

Abstract

Aimed at the requirement of low pressure reservoir protection, the oil-in-water drilling fluid with the oil-water ratio of 7 ∶ 3-3 ∶ 7 is formed through the laboratory study. The density of oil-in-water drilling fluid is 0.88-0.97 g/cm3 and the anti-temperature can reach 180 ℃ . The oil-in-water drilling fluid has good emulsion stability and rheological property. It has successfully been applied in Wells Chengshen 7 and 9. The results show the oil-in-water drilling fluid studied in this paper has good anti-high temperature ability and anti CO2 capacity, and the drilling fluid performance is stable, which is benefit to the safe and fast drilling, and can protect the reservoir. The anti-temperature oil-in-water drilling fluid can meet the requirements of the nearly balanced or underbalanced drilling of deep well.

关键词：

水包油钻井液; 低密度; 抗高温; 抑制性; 抗污染;

Keywords:

oil-in-water drilling fluid; low density; anti high-temperature; inhibitive ability; anti-pollution;

基金项目

DOI

10.6056/dkyqt201302024