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:
Apr. 18, 1989
Filed:
Feb. 29, 1988
James W Dobson, Jr, Houston, TX (US);
Alan T Mondshine, Houston, TX (US);
Thomas C Mondshine, Houston, TX (US);
Texas United Chemical Corporation, Houston, TX (US);
Abstract
Disclosed are well working and treating fluids comprising a saturated aqueous saline solution, a particulate water soluble salt which is insoluble in the saturated saline solution, xanthomonas gum, and an epichlorohydrin crosslinked hydroxypropyl starch derivative wherein the xanthomonas gum and the epichlorohydrin crosslinked hydroxypropyl starch derivative interact to synergistically enhance the suspension characteristics of the fluid and to decrease the fluid loss of the fluid. Also disclosed is an additive composition for enhancing the suspension characteristics and reducing the fluid loss of saturated brine based well treating fluids comprising specified proportions of xanthomonas gum and epichlorohydrin crosslinked hydroxypropyl starch.