Eccentric fluid displacement sleeve

Details Eccentric fluid displacement sleeve Eccentric fluid displacement sleeve

E - Fixed Constructions

21

B

E21B 47/00 (2006.01) E21B 17/10 (2006.01) E21B 47/01 (2006.01)

Patent

CA 2133036

ABSTRACT An eccentric fluid displacement sleeve is disclosed for use with a measurement-while-drilling instrument, to convert the instrument for use in different size boreholes. The sleeve is made eccentric by either increasing or decreasing the thicknesses of positioning blades on the periphery of the sleeve, while maintaining the thickness of the fluid displacement blade aligned with the detectors.

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