A CHEMICAL ADDITIVE AND PROCESS FOR REMOVING SOLIDS FROM A WELL DRILLING SYSTEM - Patent 0765429

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EP 0 765 429 A1

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(43)	Date of publication:
	02.04.1997 Bulletin 1997/14

(21)	Application number: 95926132.0

(22)	Date of filing: 28.06.1995

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International Patent Classification (IPC):

C09K 8/ 035^{( . )}
C09K 8/ 524^{( . )}

C09K 8/ 06^{( . )}

(86)	International application number:
	PCT/US1995/008197

(87)	International publication number:
	WO 1996/001358 (18.01.1996 Gazette 1996/04)

(84)	Designated Contracting States:
	DE FR GB GR IT NL

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Priority:

01.07.1994 US 19940270006
07.06.1995 US 19950476608
07.06.1995 US 19950484821

(71)	Applicant: Well-Flow Technologies, Inc.
	Houston, TX 77084 (US)

(72)	Inventors:
	SALISBURY, Darrell, P. Sugar Land, TX 77478 (US) SLOAN, Robert, L. Katy, TX 77450 (US)

(74)	Representative: Frankland, Nigel Howard, et al
	FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 80801 München 80801 München (DE)

(54)	A CHEMICAL ADDITIVE AND PROCESS FOR REMOVING SOLIDS FROM A WELL DRILLING SYSTEM