公开(公告)号：US3850817A

公开(公告)日：1974-11-26

申请号：US25513072

申请日：1972-05-19

Applicant: VERWALTUNGS GMBH OIL BASE GERM

Inventor： BARTHEL H

IPC: C09K8/05 ,  C10M3/04

CPC classification number: C09K8/05

Abstract: An improved drilling fluid contains magnesium carbonate and an ammonium salt, preferably ammonium chloride. Calcium hydroxide may be added to adjust the pH-value of the drilling fluid to a pH between about 8.0 and about 12.0. The drilling fluid may also contain additional salts and protective colloids.

Abstract translation: 改进的钻井液含有碳酸镁和铵盐，优选氯化铵。 可以加入氢氧化钙以将钻井液的pH值调节至约8.0至约12.0之间的pH。 钻井液还可含有额外的盐和保护胶体。