Fluid means for data transmission

Details Fluid means for data transmission Fluid means for data transmission

G - Physics

01

F

73/132, 138/52

G01F 1/34 (2006.01) E21B 47/18 (2006.01) F04B 9/111 (2006.01)

Patent

CA 1275181

FLUID MEANS FOR DATA TRANSMISSION ABSTRACT A means to transmit recorded data through a fluid medium is disclosed, the preferred embodiment incorporates a positive displacement fluid pump 10 having constant pressure pumping means 12 connected to pump fluid through a drill string 13 for drilling oil wells. A variable orifice means 27 is located down hole in the drill string 13 which changes orifice diameter responsive to recorded signals. The pumped fluid is displaced by a pumping piston 20 driven by a second piston 31 which is powered by constantly pressured hydraulic fluid. The pumped fluid is held at a constant pressure, therefore a change in orifice 27 diameter will change the volume of the flow through the orifice and thereby change the volume of flow of the hydraulic drive fluid. The flow rate of the hydraulic drive fluid is thus gauged to thereby record orifice diameter change and in turn receive signals transmitted by the change in orifice diameter.

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