期刊
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
卷 103, 期 -, 页码 36-40出版社
ELSEVIER
DOI: 10.1016/j.petrol.2013.02.008
关键词
Drilling fluid; Pore pressure transmission; Membrane efficiency; Shale stability
资金
- NSF of China [41072094]
A novel aluminum-based shale stabilizer used in drilling fluid composed of humic acid and aluminum (HA-Al) was synthesized. HA-Al is soluble under alkaline conditions, however, it can precipitate as microsphere pseudoboehmite and humic acid floc under neutral and acidic conditions or after the addition of Ca2+ and Mg2+ ions in solution. Due to these chemical features, HA-Al can dissolve in drilling fluid and precipitate in the shale pore throats when exposed to shale pore fluid to reduce pore pressure transmission, as is proven by SEM test. Comparing to other two samples of sodium silicate and poly alcohol, HA-Al is the best one to maintain wellbore stability due to its better properties of decreasing pore pressure transmission and increasing actual osmotic pressure of shale sample, as is indicated by pore pressure transmission and shale membrane efficiency tests. (C) 2013 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据