Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tao Xiang0
Date of Patent
June 5, 2007
0Patent Application Number
108185940
Date Filed
April 6, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A circulation loss combination for water-based drilling fluid system(s) comprising: a first amount of alkali metal silicate; a second amount of water insoluble particulate; and, a quantity of water soluble activating agent effective to reduce the pH of the water-based drilling fluid system to a value sufficiently low to form an effective circulation loss structure at a desired period of time after addition to the water-based drilling fluid system.
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