Displacement of drilling fluids from boreholes

Details Displacement of drilling fluids from boreholes Displacement of drilling fluids from boreholes

E - Fixed Constructions

21

B

166/17

E21B 33/16 (2006.01) C09K 8/528 (2006.01) E21B 21/00 (2006.01)

Patent

CA 940445

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