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:
Aug. 01, 2006
Filed:
Aug. 25, 2003
Arvind D. Patel, Sugar Land, TX (US);
Emanuel Stamatakis, Houston, TX (US);
Eric Davis, Houston, TX (US);
Jim Friedheim, Spring, TX (US);
Arvind D. Patel, Sugar Land, TX (US);
Emanuel Stamatakis, Houston, TX (US);
Eric Davis, Houston, TX (US);
Jim Friedheim, Spring, TX (US);
M-I L.L.C., Houston, TX (US);
Abstract
A water-base fluid for use in drilling, cementing, workover, fracturing and abandonment of subterranean wells through a formation containing a shale which swells in the presence of water. In one illustrative embodiment, the drilling fluid includes, an aqueous based continuous phase, a weighting agent, and a shale hydration inhibition agent. The shale hydration inhibition agent should have the general formula: in which A is independently selected from H and CHCHCHNH; and in which B is independently selected from H, CHCHOH, CHCHOCHCHCHNHand CHCHCHNH. The shale hydration inhibition agent is present in sufficient concentration to substantially reduce the swelling of shale drilling cuttings upon contact with the drilling fluid. The drilling fluid may be formulated to include a wide variety of components of aqueous based drilling fluids, such as weighting agents, fluid loss control agents, suspending agents, viscosifying agents, rheology control agents, as well as other compounds and materials known to one of skill in the art. The fluids may also be used in the disposal by reinjection of drilling cutting into a selected subterranean disposal formation.