Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2006-02-07
2006-02-07
Kreck, John (Department: 3673)
Wells
Processes
With indicating, testing, measuring or locating
C166S292000, C166S264000
Reexamination Certificate
active
06994164
ABSTRACT:
The current invention provides a method for enhancing the formation stability of water sensitive, reactive formations penetrated by a wellbore. The method of the current invention provides an accurate evaluation of the impact of cementing fluids on water sensitive, reactive formations and provides the ability to accurately formulate cementing fluids in order to enhance the stability of such formations. When necessary, the method of the current invention additionally provides for the application of an osmotic semi-permeable membrane to the face of the formation.
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SPE/IADC 79913 entitled “Understanding Formation (In) Stability During Cementing” by James Heathman et al., dated Feb. 2003.
IADC/SPE 77192 entitled “Novel High Membrane Efficiency Water-Based Drilling Fluids For Alleviating Problems in Troublesome Shale Formations” by Chee T. Tan et al., dated Sep. 2002.
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Heathman James F.
Ravi Krishna M.
Tare Uday A.
Halliburton Energy Service,s Inc.
Kreck John
McAfee & Taft P.C.
Roddy Craig W.
LandOfFree
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