Patrick J Shuler
Engineers at Briardale Ln, Yorba Linda, CA
License number
Colorado 26571
Issued Date
Nov 20, 1989
Renew Date
Dec 1, 2003
Expiration Date
Nov 30, 2005
Type
Professional Engineer
Address
Address
17400 Briardale Ln, Yorba Linda, CA 92886
Professional information
Method For Prolonging The Useful Life Of Polymeric Or Blended Scale Inhibitors Injected Within A Formation
US Patent:
5181567, Jan 26, 1993
Filed:
May 18, 1992
Appl. No.:
7/887569
Inventors:
Patrick J. Shuler - Yorba Linda CA
Assignee:
Chevron Research and Technology Company - San Francisco CA
International Classification:
E21B 4312
US Classification:
166279
Abstract:
A method is disclosed for prolonging the useful life of polymeric scale inhibitors or blends of non-polymeric and polymeric scale inhibitors injected within a formation. This method involves injecting an aqueous solution of polyquaternary amines into the formation. This solution of polyquaternary amines can be injected prior to, simultaneously with, or after the injection of the scale inhibitors. The scale inhibitors are preferably a blend of non-polymeric and polymeric scale inhibitors. Preferably, the polyquaternary amine is a poly-(dimethylamine-co-epichlorohydrin) or a poly-(diallyldimethylammonium chloride).
Method Of Preventing In-Depth Formation Damage During Injection Of Water Into A Formation
US Patent:
5251697, Oct 12, 1993
Filed:
Mar 25, 1992
Appl. No.:
7/857148
Inventors:
Patrick J. Shuler - Yorba Linda CA
Assignee:
Chevron Research and Technology Company - San Francisco CA
International Classification:
E21B 4302, E21B 4320
US Classification:
166268
Abstract:
In-depth formation damage is prevented during water injection by adding to the water non-compressible solids of sufficient size and concentration to form an external filter cake within the injection well. Preferably, the non-compressible solids are either diatomite, perlite, saw dust, or calcium carbonate, and the concentration of non-compressible solids is from 0. 001 to 5 wt%. When no longer needed, the external filter cake is removed from the injection well by using an acid wash or back-flowing the well.
Method For Reducing The Production Of Liquids From A Gas Well
US Patent:
5244043, Sep 14, 1993
Filed:
Nov 19, 1991
Appl. No.:
7/794538
Inventors:
Patrick J. Shuler - Yorba Linda CA
Assignee:
Chevron Research and Technology Company - San Francisco CA
International Classification:
E21B 33138, E21B 4312
US Classification:
166292
Abstract:
A method for reducing the amount of liquids produced from a selected geologic formation of a gas producing well is disclosed. A solution comprising controlled quantities of a scaling cation brine and scaling anion brine such that a scale will precipitate, and a controlled quantity of a scale inhibitor such that the scale precipitation will be delayed, is injected into the formation. The well is then shut-in long enough to allow the injected mixture to precipitate scale and to reduce the permeability of the formation such that a substantial portion of liquids that had been produced before, no longer are produced upon a resumption of gas production.
Method For Prolonging The Useful Life Of Scale Inhibitors Injected Within A Formation
US Patent:
5038861, Aug 13, 1991
Filed:
May 23, 1990
Appl. No.:
7/528636
Inventors:
Patrick J. Shuler - Yorba Linda CA
Assignee:
Chevron Research and Technology Company - San Francisco CA
International Classification:
E21B 4312
US Classification:
166279
Abstract:
A method is disclosed for prolonging the useful life of scale inhibitors injected within a formation. This method involves injecting aqueous solution of polyquaternary amines into the formation. This solution of polyquaternary amines can be injected either prior to or simultaneously with the injection of the scale inhibitors. The scale inhibitors are preferably non-polymeric scale inhibitors. Preferably, the polyquaternary amine is a poly(dimethylamine-co-epichlorohydrin) or a poly(diallyldimethylammonium chloride).