Turbo siren signal generator for measurement while drilling syst

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

367134, 367911, 175 40, G01V 140

Patent

active

057401268

ABSTRACT:
A self-propelled turbo siren modulator assembly is disclosed for use in an MWD system. The turbo siren includes a fixed turbine deflector located upstream from a rotor, which in turn is located upstream from a fixed stator. Drilling mud flowing through the turbine deflector causes the rotor to rotate independent of any external drive device. The rotor and stator preferably have a similar configuration, which includes at least one lobe and at least one port so that the rotor alternatively blocks or permits mud flow through the port(s) of the stator to create a cyclical acoustic wave signal, with a frequency that depends upon the number of lobes on the rotor and the velocity of the drilling mud. Encoded measurement data is modulated on the carrier frequency wave through the use of amplitude modulation, frequency modulation or phase shift modulation, or a combination thereof to maximize data rates. In addition, a plurality of modulator assemblies may be provided, each of which includes a different number of lobes so as to operate at different, distinct frequencies to create a plurality of transmission channels in the drilling mud medium. These plurality of modulator assemblies therefore provide a plurality of separate carrier frequency signals on which data may be modulated to increase the rate at which data is transmitted to the surface of the well.

REFERENCES:
patent: Re29734 (1978-08-01), Manning
patent: 3309656 (1967-03-01), Godbey
patent: 3792429 (1974-02-01), Patton et al.
patent: 3997876 (1976-12-01), Claycomb
patent: 4785300 (1988-11-01), Chin et al.
patent: 4825421 (1989-04-01), Jeter
patent: 4847815 (1989-07-01), Malone
patent: 4914637 (1990-04-01), Goodsman
patent: 4956823 (1990-09-01), Russell et al.
patent: 5119344 (1992-06-01), Innes
patent: 5182731 (1993-01-01), Hoelscher et al.
patent: 5189645 (1993-02-01), Innes
patent: 5249161 (1993-09-01), Jones et al.
patent: 5357483 (1994-10-01), Innes
patent: 5375098 (1994-12-01), Malone et al.
patent: 5375668 (1994-12-01), Hallundbaek
patent: 5517464 (1996-05-01), Lerner et al.
MWD Transmission Data Rates Can be Optimized; Desbrandes, Bourgoyne and Carter; Petroleum Engineering Department, Louisiana State University, Petroleum Engineer International, Jun. 1987; (5 p.).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Turbo siren signal generator for measurement while drilling syst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Turbo siren signal generator for measurement while drilling syst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbo siren signal generator for measurement while drilling syst will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-642984

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.