Title: Well-drilling liquid
Application Number: 85107367 Application Date: 1985.09.29
Publication Number: 1010404 Publication Date: 1987.04.15
Approval Pub. Date: Granted Pub. Date: 1992.04.08
International Classifi-cation: C09K7/02
Applicant(s) Name: Shell Internationale Research Maatschapppij B.V. Address:
Inventor(s) Name:
Attorney & Agent: SUN LINGHUA LI LUOYING
Abstract:
     This well-drilling liquid invented contains: a) At least one kind of polymerized viscosity increasing agent; b) at least one kind of polymerized decreased dehydrator; c) at least one kind of organic polycation precipitating agent with high molecular weight and/or flocculating agent. The purpose of this invention is to evaluate the possibility of appling the precipitating agent or the flocculating agent to improve the solid-phase cleansing effect of the well-drilling liquid.
Time: 7