Method of sequestering a target species using a proppant

Patent metadata

Field	Value
Publication number	US-10011765-B2
Application number	US-201715656149-A
Country	US
Kind code	B2
Filing date	Jul 21, 2017
Priority date	Feb 28, 2014
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A method of sequestering at least one target species, including exposing a proppant for use in subterranean hydrocarbon recovery via hydraulic fracturing which comprises a material adapted to sequester the at least one target species formed external to the subterranean formation and formed external to the proppant and the material, at least one of (a) prior to injecting a fluid comprising the proppant into a subterranean fracture or (b) subsequent to injecting the fluid comprising the proppant into the subterranean fracture; or exposing the material of the proppant to the at least one target species prior to completing formation of the proppant.

First claim

What is claimed is:

1. A method of sequestering at least one target species, comprising:
(i) exposing a proppant for use in subterranean hydrocarbon recovery via hydraulic fracturing which comprises a material adapted to sequester the at least one target species formed external to a subterranean formation and formed external to the proppant and the material, at least one of (a) subsequent to injecting the fluid comprising the proppant into the subterranean fracture;
whereby the at least one target species is sequestered within the subterranean formation via sequestration of the target species within the injected proppant.

2. The method of claim 1 wherein the at least one target species is carbon dioxide.

3. The method of claim 1 wherein the at least one target species is a material present in flow-back water.

4. The method of claim 2 wherein at least one of the proppant or the material is exposed to emissions from a combustion system including the at least one target species.

5. The method of claim 1 wherein the fluid comprising the proppant is injected and the at least one target species is pumped into the subterranean formation after injection of the fluid comprising the proppant to sequester the at least one target species within the subterranean formation.

6. The method of claim 1 wherein the material is selected from the group consisting of sodium bicarbonates, calcium bicarbonates, olivine, dunite, pyroxene, magnesium silicate, ankerite, dawsonite, serpentine, calcium oxides, magnesium oxides, magnesite, siderite, and dolomite.

7. The method of claim 2 wherein the material is selected from the group consisting of sodium bicarbonates, calcium bicarbonates, olivine, dunite, pyroxene, magnesium silicate, ankerite, dawsonite, serpentine, calcium oxides, magnesium oxides, magnesite, siderite, and dolomite.

8. The method of claim 1 wherein the material comprises at least 55% by weight of the proppant.

9. The method of claim 1 wherein the proppant comprises a bulk proppant core and a layer outside the bulk proppant core comprising the material adapted to sequester the at least one target species.

10. The method of claim 9 wherein the proppant further comprises a completions layer outside the layer comprising the material adapted to sequester the at least one target species, the completions layer providing protection to the layer comprising the material adapted to sequester the at least on target species during completions processes.

Assignees

• Univ Of Pittsburgh—Of The Commonwealth System Of Higher Education

Inventors

• Kropf Matthew M

Classifications

• E21B43/267

  reinforcing fractures by propping · CPC title

• C09K8/805 Primary

  Coated proppants · CPC title

• E21B41/0064

  Carbon dioxide sequestration (storing fluids in porous layers B65G5/005) · CPC title

• Y02C10/14

  Cross-Sectional Technologies · mapped topic

• Y02C20/40

  of CO2 · CPC title