Thermal insulation method

Details Thermal insulation method Thermal insulation method

E - Fixed Constructions

21

B

31/21, 166/26.1

E21B 36/00 (2006.01) C09K 8/502 (2006.01)

Patent

CA 1138770

Abstract of the Disclosure A method of insulating a well bore with a pumpable, oil base packer fluid which gels to a thick grease-like consistency at elevated temperatures, the packer fluid comprising a liquid oleaginous phase, an aqueous phase, an oleophilic polymer such as a copolymer of maleic anhydride and a long chain alpha-olefin, a water-in-oil emulsifier and lime.

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