钻井液与完井液2017，Vol.34Issue(2)：83-86,4.DOI:10.3969/j.issn.1001-5620.2017.02.015
空气钻井地层出水处理技术
Treatment of Formation Water Invasion in Air Drilling
张炜筠 1邓明毅 2向朝纲 3陈俊斌 3欧阳伟3
作者信息
- 1. 江汉石油工程有限公司钻井一公司,湖北潜江 433100
- 2. 西南石油大学·油气藏地质及开发工程国家重点实验室,成都 610500
- 3. 川庆钻探工程有限公司钻采工程技术研究院,四川广汉 618300
- 折叠
摘要
Abstract
A serious concern in air drilling is the invasion of formation water into the hole, viscosifying the dry cuttings into viscous lumps which are adhered at the surface of the drill string and borehole wall, resulting in pipe sticking. Based on the mechanism that fluid with low surface tension can penetrate fast into and break the lumps, 9 surfactants was selected for the evaluation of their osmosis, and dispersing performance using static measurement of surface tension, wetting angle measurement, timing-area method, area measurement in specific time span, round fabric method, hot rolling test method and particle size distribution measurement. The 9 surfactants tested all had wetting ability. Surfactants with smaller hydrophobic groups in their molecular structures had strong osmosis. The dispersity of anionic surfactants is governed by the electric double layer theory, while the dispersity of nonionic surfactants is governed by steric effect. High molecular weight polymers have better dispersity than common surfactants. Laboratory experimental results showed that diesel oil treated with CJY had strong osmosis and dispersity, making it a better chemical in disintegrating mud lumps than oil based pipe sticking agent JKZ. Diesel oil treated with CJY performed better at elevated temperatures. This study provides a method for the solution of formation water cut during air drilling.关键词
空气钻井/表面活性剂/渗透性/分散性/泥团碎解Key words
Air drilling/Surfactant/Osmosis/Dispersity/Mud lump disintegration分类
能源科技引用本文复制引用
张炜筠,邓明毅,向朝纲,陈俊斌,欧阳伟..空气钻井地层出水处理技术[J].钻井液与完井液,2017,34(2):83-86,4.
