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:
Jun. 28, 2016
Filed:
Jul. 20, 2011
Vikrant Wagle, Mahrashtra, IN;
Shadaab Maghrabi, Maharashtra, IN;
Vikrant Wagle, Mahrashtra, IN;
Shadaab Maghrabi, Maharashtra, IN;
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
According to an embodiment, an invert emulsion drilling fluid comprises: an external phase, wherein the external phase of the drilling fluid comprises a hydrocarbon liquid; an internal phase, wherein the internal phase of the drilling fluid comprises a hygroscopic liquid; and a suspending agent, wherein the suspending agent is a polymer comprising urea linkages or urea and urethane linkages. According to certain embodiments, the hygroscopic liquid comprises a salt and a suitable solvent. According to other embodiments, the hygroscopic liquid comprises an alcohol. In certain embodiments, the drilling fluid does not contain an organophilic clay or organophilic lignite. According to another embodiment, a method of using the invert emulsion drilling fluid comprises: introducing the drilling fluid into at least a portion of a subterranean formation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile