Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through drill string or casing
Patent
1988-04-29
1991-02-12
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Wellbore telemetering
Through drill string or casing
181106, G01V 140
Patent
active
049929976
ABSTRACT:
Downhole conditions in wellbores such as fluid pressure, temperature and flow conditions during drillstem testing or during wellbore stimulation or fracturing processes are transmitted through sensing and signal conversion circuits to axial or torsional wave vibrators secured to a drillstem or tubing string in the borehole for generating stress wave vibrations in the drillstem or tubing string for transmission to a point at or near the earth's surface. Accelerometers and/or strain gauges are mounted on the stem or tubing at a point near the earth's surface for sensing the torsional, axial or bending vibrations and converting the vibratory signals to signals for receipt and recording and correlated with the signals being transmitted from the borehole. The system includes an axial compression wave generator comprising a solenoid energized oscillator hammer member disposed on a sub which may be interposed in the drillstem. A torsional wave vibration generator may be utilized comprising a sub having motor driven eccentric rotors which are driven in timed relationship to each other to generate selected torsional and/or bending stress waves in the drillstem or tubing string.
REFERENCES:
patent: 3185250 (1965-05-01), Alazier
patent: 3244252 (1966-04-01), Burns
patent: 3790930 (1974-02-01), Lamel et al.
patent: 3930220 (1975-12-01), Shawhan
patent: 4001773 (1977-01-01), Lamel et al.
patent: 4071086 (1978-01-01), Bennett
patent: 4139836 (1979-02-01), Chaney et al.
patent: 4156229 (1979-05-01), Shawhan
patent: 4207961 (1980-06-01), Kitsunezaki
patent: 4222455 (1980-09-01), Lerwill
patent: 4314365 (1982-02-01), Petersen et al.
patent: 4327814 (1982-05-01), Erich
patent: 4562559 (1985-12-01), Sharp et al.
patent: 4597067 (1986-06-01), Bockhorst et al.
patent: 4709362 (1987-11-01), Cole
patent: 4715451 (1987-12-01), Bseisu et al.
Barnes, "Passbands for Acoustic Transmission . . . ", Jour. Acoust. Soc. Am., vol. 51, #5, Pt. 2, pp. 1606-1608, 1972.
Squire et al., "A New Approach to Drill-String . . . ", 9/26/79, 54th Annu. Fall Tech. Conf. of AIME, 8 pp.
Atlantic Richfield Company
Martin Michael E.
Moskowitz Nelson
LandOfFree
Stress wave telemetry system for drillstems and tubing strings does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stress wave telemetry system for drillstems and tubing strings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stress wave telemetry system for drillstems and tubing strings will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-25488