Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1993-02-19
1996-01-02
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 75, 364422, G01V 128, G01V 136
Patent
active
054815010
ABSTRACT:
A method for simulating crosswell seismic data between first and second spaced apart wells is disclosed. According to the invention, a surface seismic source is used to generate a seismic signal at a location on the surface of the earth substantially in line with, but not between, the wells and closer to the first well than to the second well. A plurality of downhole seismic receivers are located in the first well and at least one downhole seismic receiver is located in the second well. The actual arrival time of the seismic signal at each of the first well and second well seismic receivers is recorded. For each second well seismic receiver, the actual arrival time is then compared to an estimate of the seismic signal travel time calculated on the basis of an assumed interwell seismic velocity field. If the estimate of the seismic signal travel time is not equal to the actual arrival time for each second well seismic receiver, the assumed interwell seismic velocity field is modified and the calculation is repeated. In this manner, the actual interwell seismic velocity field can be determined.
REFERENCES:
patent: 2992694 (1961-07-01), Musgrave et al.
patent: 4214226 (1980-07-01), Narasimhan et al.
patent: 4751688 (1988-06-01), Paulsson
patent: 4856614 (1989-08-01), Arens et al.
patent: 4893694 (1990-01-01), Houck
patent: 5042611 (1991-08-01), Howlett
patent: 5062086 (1991-10-01), Harlan et al.
patent: 5142500 (1992-08-01), Yamamoto et al.
patent: 5144590 (1992-09-01), Chon
patent: 5339282 (1994-08-01), Kuhn et al.
Michelbra et al., 2nd Soc. Explor. Geophys. Japan et al. Geo. Int. Symp, v-2, pp. 77-96, Nov. 1992; Abst. herewith.
Guest et al., Soh Natur. Sci. Eng. Res. Counelan et al., May 17, 1992, Canad Jour. Exp. Phys., vol. 29, #1, pp. 78-92.
Blakeslee, S.; Leading Edge, vol. 13, #4, pp. 252-254, Apr. 1994; Abst. only herewith.
Blakeslee et al.; 63rd Ann. SEG Int. Mtg. Sep. 26, 1993, pp. 9-12; Abst. only herewith.
Squires et al., Geophysics, vol. 57, #2, Feb. 1992, pp. 353-362.
Deplante et al, 56th Annu. Soc. Explor. Geophys. Int Mtg., Nov. 2, 1986, Pap. S146; Geophysics, vol. 52, #3, pp. 433, Mar. 1987.
Sheriff, "Encyclopedic Dictionary of Exploration Geophysics", Second Edition, p. 89.
Bregman et al., "Crosshole Seismic Tomography", Geophysics, vol. 54, No. 2 (Feb. 1989); pp. 200-215.
Lines et al., "Integrated Interpretation of Borehole and Crosswell Data From a West Texas Field", The Leading Edge, Jan. 1993; pp. 13-16.
Cerveny, "Ray Tracing Algorithms in Three-Dimensional Laterally Varying Layered Structures", Chapter 5 of Seismic Tomography: With Applications in Global Seismology and Exploration Geophysics, edited by G. Nolet, D. Reidel Publishing Company, 1987.
Blakeslee Samuel N.
Chen Sen-Tsuen
Bell Keith A.
Exxon Production Research Company
Moskowitz Nelson
LandOfFree
Method for simulating crosswell seismic data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for simulating crosswell seismic data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for simulating crosswell seismic data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-241137