The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 1985
Filed:
Jun. 13, 1983
Rodrigue V Lauzon, Taylor Lake Village, TX (US);
Venture Innovations, Inc., Lafayette, LA (US);
Abstract
Disclosed is a process of formulating an aqueous medium to minimize the swelling and dispersion of subterranean formations contacted by the aqueous medium, particularly the aqueous phase of a water base drilling fluid. The process comprises: measuring a filtration property of a series of aqueous slurries containing particles of the subterranean formation and various concentrations of a water soluble compound which inhibits the swelling or dispersion of shales to determine the concentration range of the compound which maximizes the filtration rate; measuring a filtration property or the zeta potential of a series of aqueous slurries having a varying pH in the range from about 8 to about 13 to determine the pH range which either maximizes the filtration rate or provides a zeta potential in the range of about -10 millivolts to about +20 millivolts, respectively; and utilizing the concentration range of the compound and the pH range to formulate the aqueous medium.