Darrell P Salisbury

US Patent:

56786310, Oct 21, 1997

Filed:

Jun 7, 1995

Appl. No.:

8/476608

Inventors:

Darrell P. Salisbury - Sugar Land TX
Robert L. Sloan - Katy TX

Assignee:

Well-Flow Technologies, Inc. - Houston TX

International Classification:

E21B 3700
E21B 3706

US Classification:

166304

Abstract:

A process for cleaning a well system and equipment has been developed using a chemical additive that includes an alkene alcohol, preferably a terpene, and either an ether amine or base fluid or combination of the two. The additive can be used in an aqueous or salt solution. The process includes circulating the chemical additive in the well system with spacer fluids.

US Patent:

56767633, Oct 14, 1997

Filed:

Jun 7, 1995

Appl. No.:

8/472415

Inventors:

Darrell P. Salisbury - Sugar Land TX
Robert L. Sloan - Katy TX

Assignee:

Well-Flow Technologies, Inc. - Houston TX

International Classification:

B08B 308

US Classification:

134 2212

Abstract:

An improved chemical composition and process for cleaning pipe dope from wellbores has been established. The chemical composition is of an aliphatic hydrocarbon and/or esters with a biodegradable water insoluble monoterpene preferably having a flash point (PMCC) greater than 140. degree. F. the mixture then used neat, or in a dispersion of seawater, being used to remove pipe dope from tubing, casing and the like.

US Patent:

55707424, Nov 5, 1996

Filed:

May 25, 1995

Appl. No.:

8/450391

Inventors:

J. Scott Reynolds - Aberdeen, GB6
Robert L. Sloan - Katy TX
Darrell P. Salisbury - Sugar Land TX

Assignee:

Well-Flow Technologies, Inc. - Houston TX

International Classification:

E21B 3702
E21B 3706

US Classification:

166173

Abstract:

A cleaning tool for tubular members has a pattern of scratching elements arranged on the outside of an elongate member such as a mandrel. The mandrel is coated with a rigid or resilient polymeric material or a combination of both. The scratching elements are affixed in the polymeric material in an arrangement to allow fluid flow around the mandrel.