稳定盐膏层井眼的不饱和有机盐水钻井液新技术

›› 2005, Vol. 26 ›› Issue (11): 1829-1833.

稳定盐膏层井眼的不饱和有机盐水钻井液新技术

郑力会¹，陈勉¹，张民立²，王志军²，姚少全³

1. 中国石油大学石油天然气工程学院，北京 102249；2. 塔指第四勘探公司，新疆库尔勒 841000；3. 北京培康佳业技术发展有限公司，北京 100083

收稿日期:2004-05-27 出版日期:2005-11-10 发布日期:2014-01-03
作者简介:郑力会，男，1968年生，博士，高级工程师，从事井壁稳定方面的研究工作。
基金资助:
国家自然科学基金重点项目(No. 50234030)资助。

A new technology for controlling hole-stability in salt/gypsum stratum by unsaturated organic-salt liquor drilling fluid

ZHENG Li-hui¹, CHEN Mian¹, ZHANG Min-li², WANG Zhi-jun², YAO Shao-quan³

1. College of Petroleum Engineering, China Petroleum University, Beijing 102249, China; 2. The Fourth Exploration Company, Tarim Oil Exploration & Development Bureau, Xinjiang 841000, China; 3. Pecome Technology Co. Ltd, Beijing 100083, China

Received:2004-05-27 Online:2005-11-10 Published:2014-01-03

摘要/Abstract

摘要： 从力学和物理学角度分析，人们一般采用油基钻井液、饱和盐水钻井液或欠饱和盐水钻井液钻盐膏层，但油基钻井液因为自身缺陷无法大规模使用，而且井下经常出现事故或复杂情况。在成本可接受的情况下，采用适当密度的不饱和有机盐钻井液，可使钻井液在满足地层盐岩适当溶解的同时又具有较强的抑制性，从而达到盐膏层井眼稳定的目的。在室内进行了以密度为1.30 g/cm3和1.36 g/cm3有机盐水溶液为基液配制而成的两套钻井液常规性能、抗污染性能和盐溶量实验，认为两套钻井液都能够满足盐膏层的钻井需要，且在Y5-2井也进行了现场试验，表明与同构造上的其它完成井相比，无事故或复杂情况，综合成本低。

关键词: 控制, 盐膏层, 井眼稳定, 不饱和有机盐水, 钻井液, 研究, 应用

Abstract: Oil-based drilling fluids, saturated/under-saturated saltwater drilling fluids were generally introduced to salt/gypsum stratum according to mechanics and physics analysis. But oil-based drilling fluids cannot be applied cosmically because of itself limitation. And accidents and complex situations take place frequently by adopting saturated/under-saturated saltwater drilling fluids. Under acceptable drilling fluids cost condition, hole in salt/gypsum stratum can be stabilized that under-saturated organic salt liquor drilling fluids with proper density can satisfy the condition that formation salts are solved appropriately and keep better drilling fluids inhibition. Two drilling fluids are prepared by organic salt based solution density of 1.30 g/cm3 and 1.36 g/cm3 respectively; and their routine properties, resistance to fouling, and inhibition are evaluated in lab. The conclusion of experiment is that two drilling fluids can achieve the need of drilling salt/gypsum stratum; and the two drilling fluids were applied to Y5-2 well for a field experiment. Results show no fault and less drilling cost compared with other wells in the same structure.

Key words: controlling, salt/gypsum stratum, hole-stability, unsaturated organic-salt liquor, drilling fluid, research, application

中图分类号:

TU 443

郑力会，陈勉，张民立，王志军，姚少全,. 稳定盐膏层井眼的不饱和有机盐水钻井液新技术[J]. , 2005, 26(11): 1829-1833.

ZHENG Li-hui , CHEN Mian , ZHANG Min-li , WANG Zhi-jun , YAO Shao-quan,. A new technology for controlling hole-stability in salt/gypsum stratum by unsaturated organic-salt liquor drilling fluid[J]. , 2005, 26(11): 1829-1833.

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