Drilling fluid compositions and methods for use thereof in subterranean formations

Patent metadata

Field	Value
Publication number	US-9790416-B2
Application number	US-201213664042-A
Country	US
Kind code	B2
Filing date	Oct 30, 2012
Priority date	Oct 30, 2012
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A method comprising drilling a wellbore into a subterranean formation; providing a drilling fluid comprising an aqueous base fluid and a property control package, the property control package comprising: a stabilizing agent; a filtration control agent; and a suspension enhancer; introducing the drilling fluid into the wellbore in the subterranean formation; and continuously circulating the drilling fluid during the drilling of the wellbore.

First claim

The invention claimed is:

1. A method comprising:
drilling a wellbore into a subterranean formation;
providing a drilling fluid comprising an aqueous base fluid;
providing a property control package in a dry state, the property control package comprising:
a finely ground clay derivative present in an amount in a range from about 70% to about 95% by dry weight of the property control package, wherein the finely ground clay derivative comprises a montmorillonite clay and comprises less than 10% impurities by dry weight of the clay derivative;
a stabilizing agent, wherein the stabilizing agent is present in an amount in a range of from about 0.01% to 2% by dry weight of the property control package and the stabilizing agent comprises a partially hydrolyzed polyacrylamide;
a filtration control agent, wherein the filtration control agent comprises a cellulose derivative; and
a suspension enhancer, wherein the suspension enhancer does not interact with the finely ground clay derivative to hinder swelling of the finely ground clay derivative;
introducing the property control package into the drilling fluid;
introducing the drilling fluid comprising the property control package into the wellbore in the subterranean formation; and
continuously circulating the drilling fluid during the drilling of the wellbore.

2. The method of claim 1 , wherein the aqueous base fluid is selected from the group consisting of: fresh water, saltwater, brine, seawater, and any combination thereof.

3. A method comprising:
drilling a wellbore into a subterranean formation;
providing a drilling fluid comprising an aqueous base fluid;
providing a property control package in a dry state, the property control package consisting essentially of:
a finely ground clay derivative present in the range from about 70% to about 95% by dry weight of the property control package, wherein the finely ground clay derivative is a montmorillonite clay;
wherein the finely ground clay derivative comprises less than about 5% impurities by dry weight of the clay derivative;
a stabilizing agent, wherein the stabilizing agent includes a partially hydrolyzed polyacrylamide;
a filtration control agent, wherein the filtration control agent includes a cellulose derivative; and
a suspension enhancer, wherein the suspension enhancer does not interact with the finely ground clay derivative to hinder swelling of the finely ground clay derivative;
introducing the property control package into the drilling fluid;
introducing the drilling fluid comprising the property control package into the wellbore in the subterranean formation; and
continuously circulating the drilling fluid during the drilling of the wellbore.

4. The method of claim 3 , wherein the aqueous base fluid is selected from the group consisting of: fresh water, saltwater, brine, seawater, and any combination thereof.

Assignees

• Halliburton Energy Services Inc

Inventors

• Kuri Laura P
• Landis Charles
• Collins Ryan
• Donald David M

Classifications

• C09K8/50

  Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls (compositions for consolidating loose sand or the like around wells C09K8/56) · CPC title

• C09K8/57

  Compositions based on water or polar solvents (C09K8/565 takes precedence) · CPC title

• C09K8/62

  Compositions for forming crevices or fractures · CPC title

• C09K8/04 Primary

  Aqueous well-drilling compositions · CPC title