Membrane forming in-situ polymerization for water based...

Details Membrane forming in-situ polymerization for water based... Membrane forming in-situ polymerization for water based...

2007-10-09

2007-10-09

Gulakowski, Randy (Department: 1712)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C507S129000, C507S131000, C507S209000, C166S300000, C175S064000

Reexamination Certificate

active

11372439

ABSTRACT:
A method of increasing shale formation stability with a water based drilling fluid, the method including: delivering to the shale formation a drilling fluid formulated to include an aqueous fluid; a first reactant which is a soluble monomer, oligomer, or polymer with exposed ketone, aldehyde, or aldol groups or with groups which can be shifted to ketone or aldehyde functionality; and, a second reactant which is a primary amine, diamine, or polyamine which by condensation reaction forms a semi-soluble or precipitated filming product with the first reactant.

REFERENCES:
patent: 2352387 (1944-06-01), Heinrich et al.
patent: 4716966 (1988-01-01), Shu
patent: 64-031892 (1989-02-01), None
patent: WO99/31353 (1999-06-01), None

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