John P Connor

US Patent:

57283028, Mar 17, 1998

Filed:

May 20, 1996

Appl. No.:

8/655305

Inventors:

John A. Connor - Houston TX
Dennis A. Clifford - Houston TX
Philip T. King - Anchorage AK

Assignee:

Groundwater Services, Inc. - Houston TX

International Classification:

B01D 1504
C02F 142

US Classification:

210679

Abstract:

A method is provided for reducing the concentration of radioactive materials or other trace contaminants in fluids withdrawn from subterranean reservoirs and also fluids in reservoirs. The method involves deposition of sorbent solids including, but not limited to, fine ion exchange resins, within the reservoir matrix surrounding a production well to act as an in-situ filter for dissolved radionuclides or other contaminants present in reservoir pore waters. For this purpose, the sorbent solid is either a) precipitated within the reservoir matrix by the reaction of ions or molecules of two or more carrier solutions or b) directly introduced into the reservoir as a solid component of a solid-liquid slurry using high-pressure injection techniques. Thereafter, fluids in the reservoir that contact the sorbent solid and fluids produced by the well contain significantly lower concentrations of contaminants which are by the sorbent solids by means of ion exchange, adsorption, chelation, chemisorption, or coprecipitation.

US Patent:

51961245, Mar 23, 1993

Filed:

Apr 9, 1992

Appl. No.:

7/866341

Inventors:

John A. Connor - Houston TX
Dennis A. Clifford - Houston TX
Philip T. King - Anchorage AK

Assignee:

Groundwater Services, Inc. - Houston TX

International Classification:

C02F 128

US Classification:

210679

Abstract:

A method is provided for reducing the radioactive material content of fluids withdrawn from subterranean reservoirs. The method involves deposition of sorbent solids within the reservoir matrix surrounding a production well to act as an in-situ filter for dissolved radionuclides present in reservoir pore waters. For this purpose, the sorbent solid is either a) precipitated within the reservoir matrix by the reaction of two or more carrier solutions or b) directly introduced into the reservoir as a solid component of a solid-liquid slurry using high-pressure injection techniques. Thereafter, fluids produced by the well contain significantly lower concentrations of radionuclides (e. g. , principally radium and uranium ions), as radionuclides are removed from the inflowing reservoir fluids by means of ion exchange, adsorption, chelation, chemisorption, or coprecipitation with the in-situ filter medium.

US Patent:

20210214241, Jul 15, 2021

Filed:

Dec 4, 2020

Appl. No.:

17/111771

Inventors:

- Houston TX, US
David T. Adamson - Houston TX, US
Poonam R. Kulkarni - Houston TX, US
John A. Connor - Houston TX, US

International Classification:

C02F 1/24
C02F 3/32
C02F 1/28
C02F 1/40

Abstract:

A decontamination method for subsurface aquifers having per- and polyfluoroalkyl substances (PFAS) contaminants by injecting gas through a screened well or open tube through a porous media to form buoyant material where the PFAS contaminants accumulate on and/or in the buoyant material and rise to the water table or top of the aquifer with PFAS that desorbs from the buoyant material and concentrates in the shallow groundwater, and extracting or sequestering the groundwater near the water table or top of the confined aquifer and/or collecting the buoyant material for treatment. The method may include treatment of aquifer material consisting of gravel, sand, silt, clay, or fractured geologic media, or combination, and extraction through phytoremediation, groundwater extraction wells, wellpoint systems, or groundwater extraction trenches and include a seal and/or check valve near the water table in the trench to selectively permit water and buoyant material to flow upward.