Larry W Eoff

US Patent:

20160369160, Dec 22, 2016

Filed:

Feb 2, 2015

Appl. No.:

14/896673

Inventors:

- Houston TX, US
Anindya Ghosh - Little Rock AR, US
Antonio Recio - Humble TX, US
Larry S. Eoff - Porter TX, US
Christopher A. Lewis - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

C09K 8/60
E21B 43/16
C09K 8/56
E21B 43/14
C09K 8/62
C09K 8/035

Abstract:

Methods including deactivation and activation of permeability modifiers for use in subterranean formation operations. A first treatment fluid may be introduced into a subterranean formation having a first treatment zone having a first aqueous permeability value, the first treatment fluid comprising a first aqueous base fluid and a deactivated permeability modifier. The deactivated permeability modifier may be adsorbed onto a surface of the first treatment zone. A second treatment may thereafter be introduced into the subterranean formation, the second treatment fluid comprising a second aqueous base fluid and a cyclodextrin compound. The second treatment fluid may contact the deactivated permeability modifier to activate the permeability modifier by complexing the deactivating surfactant with the cyclodextrin compound, thereby forming an activated permeability modifier adsorbed onto the surface of the first treatment zone and reducing the aqueous permeability of the first treatment zone.