Spacer for well control fluid

Details Spacer for well control fluid Spacer for well control fluid

E - Fixed Constructions

21

B

166/16

E21B 33/14 (2006.01) C09K 8/36 (2006.01) C09K 8/42 (2006.01)

Patent

CA 1205005

ABSTRACT OF THE DISCLOSURE A spacer comprising the water-in-oil emulsion portion of a shear-thickening well control fluid is used to separate drilling mud from the shear-thickening fluid in the drill pipe in the well bore to avoid premature thickening of the shear thickening fluid in the drill pipe. The shear-thickening well control fluid comprises a water-in-oil emulsion in which is dispersed granular particles of hydratable, water expandable clay.

428590

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