Larry Eugene 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:

7958939, Jun 14, 2011

Filed:

Feb 13, 2007

Appl. No.:

12/162479

Inventors:

Larry D. Talley - Friendswood TX, US

Assignee:

ExxonMobil Upstream Research Co. - Houston TX

International Classification:

E21B 37/06
E21B 43/00
C09K 8/52

US Classification:

166369, 137 13, 1662441, 507 90, 585 15, 585950

Abstract:

Embodiments of the invention relate to a process for providing a pumpable hydrate slurry in a hydrocarbon pipeline fluid mixture having a water-cut greater than about 50 volume percent. In one or more embodiments the process comprises treating the fluid mixture with an anti-agglomerant and adding water to the fluid mixture in an amount sufficient to lower the gas-water ratio sufficiently to achieve a pumpable hydrate slurry. Also disclosed are methods for producing hydrocarbons utilizing a process for providing a pumpable hydrate slurry in a hydrocarbon pipeline fluid mixture having a water -cut greater than about 50 volume percent.

US Patent:

8436219, May 7, 2013

Filed:

Feb 22, 2007

Appl. No.:

12/162477

Inventors:

Larry D. Talley - Friendswood TX, US
Douglas J. Turner - Humble TX, US
Douglas K. Priedeman - Doha, QA

Assignee:

ExxonMobil Upstream Research Company - Houston TX

International Classification:

F17D 1/08

US Classification:

585 15, 208370, 585899, 137 2, 137 13, 137803, 166302

Abstract:

Method for reducing loss of flow due to hydrate solids deposits and wax deposition in a pipeline without the aid of chemicals and system for transporting a flow of wellstream hydrocarbons containing water, using a main pipeline and a cold-flow reactor connected to the main pipeline or within or forming a part of the pipeline, wherein at least a portion of the wellstream is fed to the cold-flow reactor. Also provided is a method for preventing hydrate nucleation and growth in a pipeline and preventing hydrate agglomeration as well as for preventing wax deposition. The provided method eliminates the use of energized equipment for melting, grinding or scraping hydrate solids from inside of pipelines or flowlines. Generating dry hydrates to be mixed with main flow of a wellstream is also described.

US Patent:

7994374, Aug 9, 2011

Filed:

Jan 17, 2006

Appl. No.:

11/883776

Inventors:

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

Assignee:

ExxonMobil Upstream Research Company - Houston TX

International Classification:

C07C 7/20

US Classification:

585 15, 95153, 95193

Abstract:

A method for treating a fluid having hydrate-forming constituents is provided. In one or more embodiments, the method includes including a mixture () comprising glycol and one or more kinetic inhibitors to a fluid () that includes one or more hydrate-forming constituents and water to provide a treated fluid comprising the glycol, one or more kinetic inhibitors, one or more hydrate-forming constituents and water. The treated fluid () is then separated at conditions sufficient to provide an oil phase stream and an aqueous phase stream, wherein the aqueous phase stream includes one or more kinetic inhibitors, glycol and water.

US Patent:

59005165, May 4, 1999

Filed:

Oct 10, 1997

Appl. No.:

8/948504

Inventors:

Larry Dalton Talley - Friendswood TX
Russell Harlan Oelfke - Houston 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 and/or agglomeration of clathrate hydrates in a petroleum fluid stream containing water is disclosed. The disclosed method uses predetermined inhibitors having a guest group, a polymer backbone, and an anchor group positioned between the guest group and the polymer backbone. The inhibitor predetermination method comprises selection of the polymer backbone, anchor group and guest group using several types of criteria. The polymer backbone should produce a substantially water soluble polymer in combination with the anchor group and the guest group. The anchor group should be a hydrophilic moiety with between one and four hydrogen bonding atoms. The guest group should be either a hydrophobic or amphiphilic moiety with a carbon atom to heteroatom ratio greater than or equal to about two to one and an average van der Waals diameter between about 3. 8 angstroms and about 8. 6 angstroms.

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.