Mud by-pass regulator apparatus for measurement while...

Details Mud by-pass regulator apparatus for measurement while... Mud by-pass regulator apparatus for measurement while...

E - Fixed Constructions

21

B

255/1

E21B 43/12 (2006.01) E21B 4/02 (2006.01) E21B 41/00 (2006.01) E21B 44/00 (2006.01) E21B 47/18 (2006.01) F03B 13/02 (2006.01)

Patent

CA 1175413

MUD BY-PASS REGULATOR APPARATUS FOR MEASUREMENT WHILE DRILLING SYSTEM Abstract of the Disclosure A mud by-pass regulator apparatus is provided to regulate the flow of drilling fluid or mud through the down- hole portion of a power supply in a measurement while drilling system. The mud by-pass regulator apparatus includes a valve, valve actuator, and a valve actuator control operable to regulate the flow of drilling fluid through the power supply within predetermined limits. The apparatus automatically causes the drilling fluid to by-pass the power supply under certain conditions to maintain regulation of the drilling fluid through the power supply so that its operation is maintained within required limits of the downhole portion of the measurement while drilling apparatus. Motion of the valve is accomplished by the valve actuator and the valve actuator control which is responsive to the pressure drop across a motive power source in the downhole power supply.

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