Larry Wayne Talley

US Patent:

7585816, Sep 8, 2009

Filed:

Jun 15, 2004

Appl. No.:

10/555227

Inventors:

Karla S. Colle - Houston TX, US
Larry D. Talley - Friendswood TX, US
John M. Longo - Houston TX, US

Assignee:

ExxonMobil Upstream Research Company - Houston TX

International Classification:

C09K 8/524
C09K 8/588

US Classification:

507 90, 137803, 137807, 210634, 210749, 422 4, 422 28, 507225, 507239, 507241

Abstract:

A method for inhibiting the formation of gas hydrates in a petroleum fluid having hydrate-forming constituents is claimed. More specifically, the method can be used to treat a petroleum fluid, such as natural gas conveyed in a pipe, to inhibit the formation of a hydrate flow restriction in the pipe. The preferred hydrate inhibitors used for practicing the method comprise substantially water soluble homopolymers and copolymers of isopropylmethacrylamide derivatives which have a bimodal molecular weight distribution.

US Patent:

8430169, Apr 30, 2013

Filed:

Aug 21, 2008

Appl. No.:

12/670994

Inventors:

Richard F. Stoisits - Kingwood TX, US
David C. Lucas - The Woodlands TX, US
Larry D. Talley - Friendswood TX, US
Donald P. Shatto - Houston TX, US
Jiyong Cai - Katy TX, US

Assignee:

ExxonMobil Upstream Research Company - Houston TX

International Classification:

E21B 43/01

US Classification:

166344, 166352, 166366, 166369, 166370, 137 7

Abstract:

A method for managing hydrates in a subsea production system is provided. The production system includes a host production facility, a control umbilical, at least one subsea production well, and a single production line. The method generally comprises producing hydrocarbon fluids from the at least one subsea production well and through the production line, and then shutting in the production line. In addition, the method includes the steps of depressurizing the production line to substantially reduce a solution gas concentration in the produced hydrocarbon fluids, and then repressurizing the production line to urge any remaining gas in the free gas phase within the production line back into solution. The method also includes displacing production fluids within the production line by moving displacement fluids from a service line within the umbilical line and into the production line. The displacement fluids preferably comprise a hydrocarbon-based fluid having a low dosage hydrate inhibitor (LDHI).

US Patent:

20110308625, Dec 22, 2011

Filed:

Jul 20, 2011

Appl. No.:

13/187226

Inventors:

Richard F. Stoisits - Kingwood TX, US
Jason W. Lachance - Pearland TX, US
Larry D. Talley - Friendswood TX, US
Douglas J. Turner - Humble TX, US

International Classification:

F15D 1/00

US Classification:

137 1, 137560

Abstract:

Methods and systems are provided for producing hydrocarbons from production fluids that have water as an external phase. A method for transporting a hydrocarbon through a pipeline includes injecting water into a production stream at a production center. The production stream includes a hydrocarbon, and the water injection forms a transportation stream that includes a water external phase. The transportation stream is flowed through a transportation line to a surface facility, wherein the transportation line comprises a plurality of static mixers spaced at intervals along the transportation line.

US Patent:

20130312980, Nov 28, 2013

Filed:

May 1, 2013

Appl. No.:

13/874938

Inventors:

Richard F. Stoisits - Kingwood TX, US
Larry D. Talley - Friendswood TX, US
Jason W. Lachance - Pearland TX, US
Douglas J. Turner - Humble TX, US

International Classification:

E21B 33/13

US Classification:

166357, 166335

Abstract:

A method and systems are provided for injecting a hydrate slurry into a reservoir. The method includes combining gas and water within a subsea simultaneous water and gas (SWAG) injection system. The method also includes forming a hydrate slurry from the gas and the water, and injecting the hydrate slurry into a reservoir.

US Patent:

60282339, Feb 22, 2000

Filed:

Mar 28, 1996

Appl. No.:

8/624277

Inventors:

Karla Schall Colle - Houston TX
Christine Ann Costello - Easton PA
Enock Berluche - Phillipsburg NJ
Russell Harlan Oelfke - Houston TX
Larry Dalton Talley - Friendswood TX

Assignee:

Exxon Production Research Company - Houston TX

International Classification:

C07C 720
F17D 105

US Classification:

585 15

Abstract:

A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is claimed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitors used for practicing the method comprise substantially water soluble polymers having N-vinyl amide or N-allyl amide units. Specific examples of such copolymers include, N-vinyl-N-methylacetamide (VIMA) copolymerized with acryloylpyrrolidine (APYD) or acryloylpiperidine (APID), and more preferably, VIMA copolymerized with N-substituted methacrylamides, such as N-isopropylmethacrylamide (iPMAM) and methacryloylpyrrolidine (MAPYD) to produce inhibitors for practicing the claimed method.

US Patent:

61075310, Aug 22, 2000

Filed:

Jan 6, 1998

Appl. No.:

8/973110

Inventors:

Karla S. Colle - Houston TX
Christine A. Costello - Easton PA
Larry D. Talley - Friendswood TX
Russell H. Oelfke - Houston TX
Enock Berluche - Phillipsburg NJ

Assignee:

ExxonMobil Upstream Research Company - Houston TX

International Classification:

C07C 720
F17D 105

US Classification:

585 15

Abstract:

A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents involves treating the fluid with an inhibitor comprising a substantially water soluble polymer having a polymer backbone. with a pendant C. sub. 1 --C. sub. 3 alkyl group; the polymer having an average molecular weight between about 1,000 and about 6,000,000. Preferably, the pendant alkyl group is a methyl group. The rate of nucleation, growth, and/or agglomeration of gas hydrate crystals in a petroleum fluid stream Is reduced using the alkylated polymer backbone inhibitor, thereby inhibiting the formation of a hydrate blockage in the pipe conveying the petroleum fluid stream. Test results are disclosed which unexpectedly show that alkylating the polymer backbone with a methyl group will produce a subcooling for the alkylated polymer that is at least about 2. degree. F. (about 1. 1. degree. C. ) greater than its nonalkylated counterpart.

US Patent:

56000448, Feb 4, 1997

Filed:

May 24, 1995

Appl. No.:

8/449151

Inventors:

Karla S. Colle - Houston TX
Christine A. Costello - Easton PA
Russell H. Oelfke - Houston TX
Larry D. Talley - Friendswood TX
John M. Longo - Houston TX
Enoch Berluche - Phillipsburg NJ

Assignee:

Exxon Production Research Company - Houston TX

International Classification:

C07C 720
F17D 105
F15D 100

US Classification:

585 15

Abstract:

A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitors used for practicing the method are substantially water soluble polymers formed from a N-substituted acrylamide having two nitrogen substituent groups, R. sub. 1 and R. sub. 2, where R. sub. 1 is a hydrocarbon group having from one to ten carbon atoms and zero to four heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and combinations thereof, and R. sub. 2 is a hydrogen atom or a hydrocarbon group having from one to ten carbon atoms selected from the group consisting of carbon, nitrogen, oxygen, and sulfur; alternatively, R. sub. 1 and R. sub. 2 may be linked to produce a cyclic ring having ten atoms comprising a combination of between three and ten carbon atoms and zero to four heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and combinations thereof.

US Patent:

H17493, Sep 1, 1998

Filed:

Sep 15, 1994

Appl. No.:

8/306568

Inventors:

Karla Schall Colle - Houston TX
Christine Ann Costello - Easton PA
Russell Harlan Oelfke - Houston TX
Dennis George Peiffer - Annandale NJ
Manese Rabeony - Piscataway NJ
Larry D. Talley - Friendswood TX
Pamela Jean Wright - Easton PA

Assignee:

Exxon Production Research Company - Houston TX

International Classification:

C07C 900

US Classification:

585 15

Abstract:

A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The method uses a mixture comprising a first additive and a second additive. The mixture produces a synergistic hydrate inhibition effect. The first additive is selected from the class of substantially water soluble polymers. The second additive is selected from the class of ionic or non-ionic organic compounds which have a polar part and nonpolar part with the nonpolar part having an alkyl, alkenyl, or alkynyl group with 12 or fewer carbon atoms.