Sinusoidal pressure pulse generator for measurement while drilli

Details Sinusoidal pressure pulse generator for measurement while drilli Sinusoidal pressure pulse generator for measurement while drilli

1987-09-22

1989-07-11

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through well fluids

G01V 140

Patent

active

048478156

ABSTRACT:
A pressure pulse generator which generates relatively sinusoidal pressure pulses in a fluid flowing in a borehole is disclosed. The pressure pulse generator for a MWD tool broadly comprises: a housing adapted to be connected in a tubing string so that fluid flowing in the string will at least partially flow through the housing; a stator mounted within the housing and having a plurality of lobes with intervening gaps; a rotor coaxial to the stator which rotates relative to the stator and which is mounted within the housing and has a plurality of lobes with intervening gaps between adjacent lobes, wherein the lobes of the rotor and stator are arranged such that as the rotor rotates relative to the stator, the area of the adjacent gaps between the lobes of the stator and rotor through which the fluid may flow in a direction parallel to the borehole varies approximately with the inverse of the square root of a linear function of a sine wave. Preferably, the geometrical arrangement of the stator and rotor are substantially identical with a plurality of lobes with intervening gaps around a central circular hub. A first side of each lobe is defined by a radial extension from the circular hub, and the second side of each lobe is substantially parallel to the first side.

REFERENCES:
patent: Re29734 (1978-08-01), Manning
patent: 3309656 (1967-03-01), Godbey
patent: 3764969 (1973-10-01), Cubberly, Jr.

Affiliated with

Also associated with

Rating

Sinusoidal pressure pulse generator for measurement while drilli does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sinusoidal pressure pulse generator for measurement while drilli, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sinusoidal pressure pulse generator for measurement while drilli will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-442265