Methods and compositions for carbon dioxide-foamed lost circulation materials

Patent metadata

Field	Value
Publication number	US-2024318063-A1
Application number	US-202318189899-A
Country	US
Kind code	A1
Filing date	Mar 24, 2023
Priority date	Mar 24, 2023
Publication date	Sep 26, 2024
Grant date	—

Abstract

Methods and compositions including introducing a lost circulation material to a zone of interest in a subterranean formation via a wellbore, the zone of interest comprising depleted zones, zones of low pressure, lost circulation zones, fractured zones, and any combination thereof; wherein the lost circulation material comprises an epoxidized linear α-olefin; a surfactant; a curing agent; and a carbon dioxide gas-generating compound comprising sodium bicarbonate; heating the lost circulation material; and allowing the epoxidized linear α-olefin to polymerize to a resin and the carbon dioxide gas-generating compound to produce a gas to form a foamed resin in the zone of interest, thereby mitigating a flow of fluids from the wellbore into the subterranean formation.

First claim

1 . A method comprising:
introducing a drilling fluid to a zone of interest in a subterranean formation via a wellbore;
wherein a lost circulation material is a component of the drilling fluid;
wherein the drilling fluid comprises a base fluid comprising an oleaginous fluid and wherein the drilling fluid does not comprise an organosiloxane;
the zone of interest comprising at least one of depleted zones, zones of relatively low pressure, lost circulation zones, and fractured zones;  wherein the lost circulation material comprises
an epoxidized linear α-olefin;
a surfactant;
a curing agent; and
a carbon dioxide gas-generating compound comprising sodium bicarbonate;
heating the lost circulation material; and allowing the epoxidized linear α-olefin to polymerize to a resin and the carbon dioxide gas-generating compound to produce a gas to form a foamed resin in the zone of interest, thereby mitigating a flow of fluids from the wellbore into the subterranean formation.

2 . (canceled)

3 . The method of claim 2 , wherein the lost circulation material is a component of a drilling pill.

4 . The method of claim 1 , wherein the epoxidized linear α-olefin has a carbon number from 10 to 30.

5 . The method of claim 1 , wherein the curing agent comprises at least one of a polymercaptan, a polyamide, an amidoamine, an aliphatic amine, a cycloaliphatic amine, an aromatic amine, and a phenalkamine.

6 . The method of claim 1 , wherein the epoxidized linear α-olefin is formed by at least one of a reaction of a linear α-olefin with hypochlorous acid, a reaction of a linear α-olefin with a peracid, and a reaction of a linear α-olefin with t-butylhydroperoxide and a molybdenum catalyst.

7 . The method of claim 1 , wherein the epoxidized linear α-olefin has a concentration of about 60 wt % to about 90 wt %, based on total mass of the lost circulation material.

8 . The method of claim 1 , wherein the surfactant has a concentration of about 1 wt % to about 10 wt %, based on total mass of the lost circulation material.

9 . The method of claim 1 , wherein the curing agent has a concentration of about 1 wt % to about 20 wt %, based on total mass of the lost circulation material.

10 . The method of claim 1 , wherein the carbon dioxide gas-generating compound has a concentration of about 1 wt % to about 20 wt %, based on total mass of the lost circulation material.

11 . The method of claim 1 , wherein the lost circulation material is heated in the zone of interest to a temperature of about 100° F. to about 200° F.

12 . A lost circulation material comprising:
an epoxidized linear α-olefin; a surfactant; a curing agent; and a carbon dioxide gas-generating compound comprising sodium bicarbonate.

13 . The lost circulation material of claim 12 , wherein the epoxidized linear α-olefin has a carbon number of 10 or higher.

14 . The lost circulation material of claim 12 , wherein the curing agent comprises a polymercaptan, a polyamide, an amidoamine, an aliphatic amine, a cycloaliphatic amine, an aromatic amine, a phenalkamine, and any combination thereof.

15 . The lost circulation material of claim 12 , wherein the epoxidized linear α-olefin is formed by a reaction of a linear α-olefin with hypochlorous acid, a reaction of a linear α-olefin with a peracid, a reaction of a linear α-olefin with t-butylhydroperoxide and a molybdenum catalyst, and any combination thereof.

16 . The lost circulation material of claim 12 , wherein the epoxidized linear α-olefin has a concentration of about 60 wt % to about 90 wt %, based on total mass of the lost circulation material.

17 . The lost circulation material of claim 12 , wherein the surfactant has a concentration of about 1 wt % to about 10 wt %, based on total mass of the lost circulation material.

18 . The lost circulation material of claim 12 , wherein the curing agent has a concentration of about 1 wt % to about 20 wt %, based on total mass of the lost circulation material.

19 . The lost circulation material of claim 12 , wherein the carbon dioxide gas-generating compound has a concentration of about 1 wt % to about 20 wt %, based on total mass of the lost circulation material.

20 . A method comprising:
combining an epoxidized linear α-olefin, a surfactant, a curing agent, and a carbon dioxide gas-generating compound to form a lost circulation material, the carbon dioxide gas-generating compound comprising sodium bicarbonate; and heating the lost circulation material; and allowing the epoxidized linear α-olefin to polymerize to a resin and the carbon dioxide gas-generating compound to produce a gas to form a foamed resin.

Assignees

• Saudi Arabian Oil Co

Inventors

• Wagle Vikrant
• Ramasamy Jothibasu
• Alsafran Ali
• Al-Awadh Abdulla
• Al-Yami Abdullah S

Classifications

• C09K8/5083

  obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C09K8/518 Primary

  Foams · CPC title

• C09K8/035

  Organic additives · CPC title

• E21B21/003 Primary

  Means for stopping loss of drilling fluid (plastering the borehole wall E21B33/138) · CPC title