Methods of using drilling fluids containing biodegradable...

Details Methods of using drilling fluids containing biodegradable... Methods of using drilling fluids containing biodegradable...

2011-07-26

2011-07-26

Kugel, Timothy J. (Department: 1765)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C166S305100, C175S065000, C507S129000, C507S240000, C507S245000, C507S268000, C507S901000, C507S905000, C507S910000, C516S020000, C516S031000, C516S034000

Reexamination Certificate

active

07985717

ABSTRACT:
Methods of treating a wellbore comprise displacing a drilling fluid comprising an organophilic clay treated with a quaternary ammonium surfactant having an amide linkage into the wellbore. Methods of drilling a wellbore comprise: applying torque to a bit within the wellbore and concurrently applying force to urge the bit to extend through the wellbore; and circulating a drilling fluid past the bit to remove cuttings therefrom, the drilling fluid comprising an organophilic clay treated with a quaternary ammonium surfactant having an amide linkage. Methods of preparing a drilling fluid comprise: forming an organophilic clay treated with a quaternary ammonium surfactant having an amide linkage; and combining the organophilic clay with an oil-based fluid.

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