Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2005-06-28
2005-06-28
Kreck, John (Department: 3673)
Wells
Processes
With indicating, testing, measuring or locating
C166S292000, C166S293000, C073S152070
Reexamination Certificate
active
06910535
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 77192 paper entitled “Novel High Membrane Efficiency Water-Based Drilling Fluids for Alleviating Problems in Troublesome Shale Formations,” by Chee P. Tan et al., dated Sep. 2002.
SPE/ISRM 78159 paper entitled “Development and Laboratory Verification of High Membrane Efficiency Water-Based Drilling Fluids with Oil-Based Drilling Fluid-Like Performance in Shale Stabilization,” by C.P. Tan et al., dated Oct. 2002.
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U. A. Tare, F. K. Mody, and C. P. Tan, “Mitigating Wellbore Stability Problems while Drilling with Water-Based Muds in Deepwater Environments,” Offshore Technology Conference, Houston, Tx., paper OTC 14267, pp. 1-8 (© 2002).
Fersheed K. Mody, Uday A. Tare, Chee P. Tan, and Bailin Wu, “Development of Novel Membrane Efficient Water-Based Drilling Fluids Through Fundamental Understanding of Osmotic Membrane Generation in Shales,” Society of Petroleum Engineers, Inc., paper SPE 77447, pp. 1-16 (© 2002).
Heathman James F.
Ravi Krishna M.
Tare Uday A.
Halliburton Energy Service,s Inc.
Kreck John
McAfee & Taft
Roddy Craig W.
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