David M Seeger

US Patent:

20060043002, Mar 2, 2006

Filed:

Aug 19, 2005

Appl. No.:

11/207566

Inventors:

Bryan Petrinec - Cedar Park TX, US
David Seeger - Austin TX, US

International Classification:

C10G 45/00

US Classification:

20820800R

Abstract:

Sulfur sought to be removed from deposits formed at a subterranean gas producing well are dissolved in a high boiling point relatively pure and low cost non-aqueous solvent. The dissolved sulfur is then removed from the solvent by lowering the temperature of the solution to precipitate the sulfur which is then separated and recovered as a relatively pure product. After additional processing the regenerated solvent is injected back down the well hole to dissolve additional sulfur and reutilized in successive cycles of the process.

US Patent:

20090136414, May 28, 2009

Filed:

Dec 15, 2008

Appl. No.:

12/316668

Inventors:

Bryan J. Petrinec - Cedar Park TX, US
David M. Seeger - Austin TX, US

International Classification:

C01B 17/02
B01J 19/00

US Classification:

4235781, 422187

Abstract:

Sulfur sought to be removed from deposits formed at a subterranean gas producing well is dissolved in a high boiling point relatively pure and low cost non-aqueous solvent. The dissolved sulfur is then removed from the solvent by lowering the temperature of the solution to precipitate the sulfur which is then separated and recovered as a relatively pure product. After additional processing the regenerated solvent is injected back down the well hole to dissolve additional sulfur and reutilized in successive cycles of the process. An amine or solubilizing agent may be added to the non-aqueous solvent, and an oxidizing agent may be provided during the process to oxidize polysulfides to sulfur.

US Patent:

20100240135, Sep 23, 2010

Filed:

Mar 19, 2010

Appl. No.:

12/661583

Inventors:

David M. Seeger - Austin TX, US
Bonnie S. Davis - Austin TX, US
Eric C. Klasson - Austin TX, US
Bryan J. Petrinec - Cedar Park TX, US

International Classification:

G01N 33/24

US Classification:

436 25, 422 83

Abstract:

The invention provides a method of testing sour natural gas by a) removing HS from the gas stream, b) converting HS to elemental sulfur, and c) recovering elemental sulfur. The invention also provides a substantially mobile system for testing sour natural gas including vehicles allowing the equipment to be operated on surfaces such as the flat beds of trailers. The system features equipment that may be mounted within one or more support structures situated on a mobile vehicle, such as, for instance the flat bed of a trailer. The one or more support structures hold each piece of equipment substantially fixed in place on the vehicles. Each surface such as the flat bed of a trailer may carry one, two or more pieces of equipment. The equipment may include, for instance, an air or oxygen compressor, a knockout vessel, a gas heater, an air heater, a cooler, a molten sulfur separator and a thermal oxidizer.

US Patent:

20110262345, Oct 27, 2011

Filed:

Apr 12, 2011

Appl. No.:

13/066339

Inventors:

Bryan J. Petrinec - Cedar Park TX, US
David M. Seeger - Austin TX, US

International Classification:

C01B 17/027
B01D 9/00

US Classification:

423571, 4222451, 4235671

Abstract:

Sulfur sought to be removed from deposits formed at a subterranean gas producing well is dissolved in a high boiling point relatively pure and low cost non-aqueous solvent. The dissolved sulfur is then removed from the solvent by lowering the temperature of the solution to precipitate the sulfur which is then separated and recovered as a relatively pure product. After additional processing the regenerated solvent is injected back down the well hole to dissolve additional sulfur and reutilized in successive cycles of the process. An amine or solubilizing agent may be added to the non-aqueous solvent, and an oxidizing agent may be provided during the process to oxidize polysulfides to sulfur.

US Patent:

20190112774, Apr 18, 2019

Filed:

Nov 27, 2018

Appl. No.:

16/201379

Inventors:

- Austin TX, US
David Seeger - Austin TX, US
George Richard Bird - Wildwood MO, US

Assignee:

AECOM Technical Services, Inc. - Austin TX

International Classification:

E02B 11/02
C02F 11/121
F26B 5/12
B01D 43/00
B01D 36/00
B01D 29/11
B01D 29/52

Abstract:

The installation of one or more prefabricated drains beneath the surface of sediment in a sediment pond utilizing suction or a vacuum to withdraw water from the sediment material to lower the water level down to the level of the prefabricated drains below the pond surface. Dewatering may be coupled with imparting vibrations to the material to further promote both additional dewatering and compaction of the sediment material in the pond. A suitably graded bottom ash, fly ash, sand or large-diameter-solid particle or sediment layer may be added on top of the horizontal drains to enhance dewatering of finer sediment material.

US Patent:

20180030362, Feb 1, 2018

Filed:

Jul 18, 2017

Appl. No.:

15/652740

Inventors:

- Austin TX, US
David Seeger - Austin TX, US
George Richard Bird - Wildwood MO, US

Assignee:

AECOM Technical Services, Inc. - Austin TX

International Classification:

C10L 5/04
F26B 5/12

Abstract:

The installation of prefabricated drains in a horizontal, generally co-planar pattern below the surface of the CCR with suction or a vacuum to withdraw water from the CCR material to lower the water level down to the level of the prefabricated drains below the CCR surface. Dewatering may be coupled with imparting vibrations to the material to further promote both additional dewatering and compaction of the CCR material in the pond. A suitably graded bottom ash, fly ash, sand or large-diameter-solid particle layer may be added on top of the horizontal drains to enhance dewatering of finer CCR material.