Enhanced oil recovery harvesting for fractured reservoirs

Patent metadata

Field	Value
Publication number	US-11668170-B2
Application number	US-202117527743-A
Country	US
Kind code	B2
Filing date	Nov 16, 2021
Priority date	Nov 24, 2020
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

A method of producing natural resources from a wellbore penetrating a subterranean formation with a Huff and Puff process comprising: (a) placing a recovery enhancing fluid system into the wellbore during an injection (Huff) period of time wherein placing the recovery enhancing fluid system comprises injecting under pressure; (b) ceasing injection of the recovery enhancing fluid system and allowing the composition to soak in the subterranean formation for a soak period of time; (c) producing fluids from the subterranean formation during a production (Puff) period of time; and (d) optionally repeating steps (a) to (c) for a plurality of Huff, soak, and Puff periods of time, respectively.

First claim

We claim:

1. A method of producing natural resources from a wellbore penetrating a subterranean formation with a Huff and Puff process comprising:
(a) placing a recovery enhancing fluid system into the wellbore during an injection (Huff) period of time wherein placing the recovery enhancing fluid system comprises injecting under pressure;
(b) ceasing injection of the recovery enhancing fluid system and allowing the composition to soak in the subterranean formation for a soak period of time;
(c) producing fluids from the subterranean formation during a production (Puff) period of time; and
(d) optionally repeating steps (a) to (c) for a plurality of Huff, soak, and Puff periods of time, respectively;
wherein the recovery enhancing fluid system comprises (i) a recovery enhancing agent (REA) comprising a phosphonoalkyl moiety, (ii) a surfactant, (iii) a miscible fluid and (iv) a base fluid;
wherein the recovery enhancing agent comprising a phosphonoalkyl moiety has the general formula

where R 1 is selected from an alkyl having from 1 to 10 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonate, or a hydrogen atom;
R 2 is selected from an alkyl having from 1 to 6 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonate, a phosphonoalkyl/amine, or a hydrogen atom;
R 3 is selected from an alkyl having from 1 to 10 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonoalkyl/amine, or a hydrogen atom;
R 4 is selected from an alkyl having from 1 to 6 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonate, an ammonium cation, a lithium atom, a sodium atom, a potassium atom, a cesium atom, a beryllium atom, a magnesium atom, a calcium atom, a strontium atom, a barium atom, a chromium atom, an iron atom, a manganese atom, a cobalt atom, a nickel atom, a copper atom, a gallium atom, an indium atom, or a hydrogen atom;
R 5 is selected from an alkyl having from 1 to 6 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonate, an ammonium cation, a lithium atom, a sodium atom, a potassium atom, a cesium atom, a beryllium atom, a magnesium atom, a calcium atom, a strontium atom, a barium atom, a chromium atom, an iron atom, a manganese atom a cobalt atom, a nickel atom, a copper atom, a titanium atom, a gallium atom, a zirconium atom, an indium atom, or a hydrogen atom;
x is 1 to 6;
y is 0 to 6; and
z is 1-6; and
wherein the surfactant comprises:
(a) a sulfate-capped primary branched or secondary propoxylated alcohol, a polyethylene glycol-initiated polyol, an ethylene glycol derivative or a combination thereof; or
(b) diethanolamide of a tall oil fatty acid, a sorbitol-initiated polyol or a combination thereof.

2. The method of claim 1 wherein the wellbore comprises a single well and wherein the single well is not in fluid communication with another wellbore penetrating a subterranean formation.

3. The method of claim 1 wherein the wellbore is in fluid communication with a plurality of wellbores penetrating a subterranean formation.

4. The method of claim 1 wherein the REA is present in an amount of from about 0.1 wt. % to about 10 wt. %.

5. The method of claim 1 wherein the base fluid comprises an aqueous fluid.

6. The method of claim 1 wherein the surfactant is (a) a sulfate-capped primary branched or secondary propoxylated alcohol, a polyethylene glycol-initiated polyol, an ethylene glycol derivative or a combination thereof.

7. The method of claim 1 wherein the surfactant is (b) a diethanolamide of a tall oil fatty acid, a sorbitol-initiated polyol or a combination thereof.

8. The method of claim 1 wherein the surfactant is present in an amount of from about 0.01 wt. % to about 2.0 wt. %.

9. The method of claim 1 wherein the miscible fluid comprises methane, ethane, natural gas, carbon dioxide, propane, butane or a combination thereof.

10. The method of claim 1 wherein the miscible fluid is present in an amount of from about 10 wt. % to about 85 wt. %.

11. The method of claim 1 wherein the recovery enhancing agent (REA) comprises N-(phosphonomethyl) iminodiacetic acid or salts thereof.

12. The method of claim 6 wherein the recovery enhancing agent (REA) comprises N-(phosphonomethyl) iminodiacetic acid or salts thereof.

13. The method of claim 7 wherein the recovery enhancing agent (REA) comprises N-(phosphonomethyl) iminodiacetic acid or salts thereof.

14. A method of enhanced oil recovery comprising:
(a) injecting in subterranean formation during a Huff period of time a first recovery enhancing fluid system into a first plurality of wellbores and injecting a second recovery enhancing fluid system into a second plurality of wellbores wherein the first and second recovery enhancing fluid systems may be the same or different;
(b) ceasing injection of the recovery enhancing fluid system and allowing the composition to soak in the subterranean formation for a soak period of time;
(c) producing fluids from the subterranean formation during a Huff period of time; and
(d) optionally repeating steps (a) to (c) for a plurality of Huff, soak, and Puff periods of time, respectively;
wherein the recovery enhancing fluid system comprises (i) a recovery enhancing agent (REA) comprising a phosphonoalkyl moiety, (ii) a surfactant, (iii) a miscible fluid and (iv) a base fluid;
wherein the recovery enhancing agent comprising a phosphonoalkyl moiety has the general formula

where R 1 is selected from an alkyl having from 1 to 10 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonate, or a hydrogen atom;
R 2 is selected from an alkyl having from 1 to 6 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonate, a phosphonoalkyl/amine, or a hydrogen atom;
R 3 is selected from an alkyl having from 1 to 10 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonoalkyl/amine, or a hydrogen atom;
R 4 is selected from an alkyl having from 1 to 6 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonate, an ammonium cation, a lithium atom, a sodium atom, a potassium atom, a cesium atom, a beryllium atom, a magnesium atom, a calcium atom, a strontium atom, a barium atom, a chromium atom, an iron atom, a manganese atom, a cobalt atom, a nickel atom, a copper atom, a gallium atom, an indium atom, or a hydrogen atom;
R 5 is selected from an alkyl having from 1 to 6 carbon atoms, an alkenyl having from 1 to 10 carbon atoms, an alkynyl having from 1 to 10 carbon atoms, an acyl, an aryl, an acetate, a phosphonate, an ammonium cation, a lithium atom, a sodium atom, a potassium atom, a cesium atom, a beryllium ato

Assignees

• Halliburton Energy Services Inc

Inventors

• Dusterhoft Ronald Glen
• Larsen Travis Hope
• Benoit Denise Nicole
• Reyes Enrique Antonio
• Recio Iii Antonio
• Beuterbaugh Aaron Michael
• Khamatnurova Tatyana Vladimirov
• An Jun Su

Classifications

• E21B43/16 Primary

  Enhanced recovery methods for obtaining hydrocarbons · CPC title

• E21B43/26

  by forming crevices or fractures · CPC title

• C09K8/584

  characterised by the use of specific surfactants · CPC title

• C09K8/594

  Compositions used in combination with injected gas {, e.g. CO2 orcarbonated gas}(C09K8/592 takes precedence) · CPC title