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US 2019/0055825 A1Published application
Unconventional reservoir enhanced or improved oil recovery
AssigneeLinde Aktiengesellschaft
InventorsJohn A. BABCOCK, Charles P. SIESS, III, Kevin G. WATTS, Roberta WATTS
Life of this patent
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Abstract
A method of enhanced oil recovery from an unconventional resource reservoir comprises injecting an enhanced recovery fluid into the unconventional resource reservoir via an injection well and producing hydrocarbons from the unconventional resource reservoir via the injection well or a production well offset from the injection well.
Claims64
A method for enhanced or improved hydrocarbon recovery, comprising:
- injecting an enhanced or improved recovery fluid through an injection well into an unconventional resource reservoir to mobilize and displace hydrocarbons, wherein the enhanced or improved recovery fluid comprises an unfractionated hydrocarbon mixture that is a byproduct of a condensed and de-methanized hydrocarbon stream that is miscible with hydrocarbons in the unconventional resource reservoir, wherein the unfractionated hydrocarbon mixture is condensed out of the hydrocarbon stream at a temperature at or below 0 degrees Fahrenheit, wherein the unfractionated hydrocarbon mixture comprises ethane, propane, and butane in an amount of at least 75% by volume, and wherein the unfractionated hydrocarbon mixture comprises pentane plus in an amount less than 25% by volume;
- and
- producing hydrocarbons from the unconventional resource reservoir via the injection well or a production well offset from the injection well.
A method for enhanced or improved hydrocarbon recovery, comprising:
- mixing an unfractionated hydrocarbon mixture with a gelling agent to form a gelled enhanced or improved recovery fluid, wherein the unfractionated hydrocarbon mixture is a byproduct of a condensed and de-methanized hydrocarbon stream that is miscible with hydrocarbons, wherein the unfractionated hydrocarbon mixture is condensed out of the hydrocarbon stream at a temperature at or below 0 degrees Fahrenheit, wherein the unfractionated hydrocarbon mixture comprises ethane, propane, and butane in an amount of at least 75% by volume, and wherein the unfractionated hydrocarbon mixture comprises pentane plus in an amount less than 25% by volume;
- injecting the gelled enhanced or improved recovery fluid through an injection well into an unconventional resource reservoir;
- and
- producing hydrocarbons from the unconventional resource reservoir via the injection well or a production well offset from the injection well.
1 more element
A method for enhanced or improved hydrocarbon recovery, comprising:
- injecting an unfractionated hydrocarbon mixture through an injection well into an unconventional resource reservoir, wherein the unfractionated hydrocarbon mixture is a byproduct of a condensed and de-methanized hydrocarbon stream that is miscible with hydrocarbons, wherein the unfractionated hydrocarbon mixture is condensed out of the hydrocarbon stream at a temperature at or below 0 degrees Fahrenheit, wherein the unfractionated hydrocarbon mixture comprises ethane, propane, and butane in an amount of at least 75% by volume, and wherein the unfractionated hydrocarbon mixture comprises pentane plus in an amount less than 25% by volume;
- and
- producing hydrocarbons from the unconventional resource reservoir via the injection well or a production well offset from the injection well.
Dependencies are inferred from the claim text.