MONO-QUATERNARY AMINE ALCOHOLS FOR USE OF CLAY AND SHALE INHIBITION AGENTS FOR THE DRILLING INDUSTRY
申请人:Dow Global Technologies LLC
公开号:US20150166868A1
公开(公告)日:2015-06-18
The hydration of clays and shale in drilling operations may be inhibited by employing an aqueous based drilling fluid comprising a shale hydration inhibition agent having the formula wherein R is an alkyl group having 1 to 6 carbons, R
1
is an alkyl group having 1 to 18 carbons, and X is an anion. The shale hydration inhibition agent should be present in the aqueous based drilling fluid in sufficient concentration to reduce the reactivity, such as swelling, of clays and shale when exposed to water-based drilling fluids.
在钻井作业中,通过使用含有一种页岩水合抑制剂的水基钻井液,可以抑制粘土和页岩的水合作用。该水合抑制剂的化学式为:其中R是具有1到6个碳的烷基,R1是具有1到18个碳的烷基,X是阴离子。水基钻井液中应该含有足够浓度的页岩水合抑制剂,以减少粘土和页岩在接触水基钻井液时的反应性,如膨胀。