Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Reexamination Certificate
2005-12-21
2008-12-30
Hellner, Mark (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
C367S031000
Reexamination Certificate
active
07471591
ABSTRACT:
An acoustic logging system with a borehole tool comprising a transmitter assembly and an axially spaced receiver assembly. The transmitter and receiver assemblies are optionally rotatable with respect to each other, depending upon the embodiment of the logging system. The logging system is designed to measure, among other parameters, the velocity (or slowness) and amplitude of shear wave energy induced by the transmitter assembly within formation penetrated by the borehole. These parameters are extracted from full wave acoustic data responses of receiver elements comprising the receiver assembly, and are measured as a function of azimuth around the borehole. These parameters are subsequently used to determine anisotropic properties of the formation, such as the azimuthal direction of formation fracturing with respect to the well borehole. Optional rotation of the transmitter and receiver assemblies minimizes adverse effects of maintaining calibration and balance of multiple transmitters and receivers.
REFERENCES:
patent: 3583677 (1971-06-01), Phillips
patent: 4207961 (1980-06-01), Kitsunezaki
patent: 4383591 (1983-05-01), Ogura
patent: 4649525 (1987-03-01), Angona et al.
patent: 4709362 (1987-11-01), Cole
patent: 4713968 (1987-12-01), Yale
patent: 4832148 (1989-05-01), Becker et al.
patent: 4862990 (1989-09-01), Cole
patent: 4874061 (1989-10-01), Cole
patent: 4951267 (1990-08-01), Chang et al.
patent: 5036945 (1991-08-01), Hoyle et al.
patent: 5043952 (1991-08-01), Hoyle et al.
patent: 5080189 (1992-01-01), Cole
patent: 5135072 (1992-08-01), Meynier
patent: 5159578 (1992-10-01), Lenhardt et al.
patent: 5166909 (1992-11-01), Cole et al.
patent: 5168470 (1992-12-01), Dennis et al.
patent: 5266845 (1993-11-01), Sakaue
patent: 5357481 (1994-10-01), Lester et al.
patent: 5402392 (1995-03-01), Lu et al.
patent: 5477101 (1995-12-01), Ounadjeta
patent: 5712829 (1998-01-01), Tang et al.
patent: 5852262 (1998-12-01), Gill et al.
patent: 6102152 (2000-08-01), Masino et al.
patent: 6176344 (2001-01-01), Lester
patent: 6188961 (2001-02-01), Mandal
patent: 6464439 (2002-10-01), Janitzki
patent: 6567046 (2003-05-01), Taylor et al.
patent: 6772067 (2004-08-01), Blanch et al.
patent: 6791891 (2004-09-01), Peng et al.
patent: 6791899 (2004-09-01), Blanch et al.
patent: 6925031 (2005-08-01), Kriegshauser et al.
patent: 6930616 (2005-08-01), Tang et al.
patent: 2005/0226098 (2005-10-01), Engels et al.
patent: WO0017672 (2000-03-01), None
“Search Report udner Section 17” received in corresponding Application No. GB0619151.4 dated Jan. 15, 2007.
Sinha, Bikash K., Borehole Flexural Modes in Anisotropic Formations, Geophysics, vol. 59, No. 7 (Jul. 1994) p. 1037-1052.
Winbow, Graham A., Compressional and Shear Arrivals in a Multipole Sonic Log, Geophysics, vol. 50, No. 7 (Jul. 1985) p. 1119-1126).
Zemanek, J., Continuous Acoustic Shear Wave Logging, SPWLA 25th Annual Loggoing Symposium, Jun. 10-13, 1984, pp. 1-14.
Kimball, Christoppher V., Semblance Processing of Borehole Acoustic Array Data, Geophysics, vol. 49, No. 3 (Mar. 1984) p. 274-281.
Blankinship Thomas J.
Kozak Marek
Roberts Edwin K.
Tello Lucio N.
Hellner Mark
Precision Energy Services, Inc.
Wong Cabello Lutsch Rutherford & Brucculeri LLP
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