Foamed fluid additive for underbalance drilling

Details Foamed fluid additive for underbalance drilling Foamed fluid additive for underbalance drilling

E - Fixed Constructions

21

B

E21B 21/14 (2006.01) C09K 8/38 (2006.01) E21B 21/06 (2006.01) E21B 43/40 (2006.01)

Patent

CA 2629177

A method of drilling or gas-lifting is disclosed where the methods including the use of a foaming agent and a gas, where the foaming agent is a keratin and the hydrostatic pressure of the fluid in the well is for a portion of the drilling or gas-lift operation less than an hyrdrostatic pressure of the formation being drilled or under production.

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