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3D pre-stack time migration; Kiruhihoffuho ni yoru sanjigen jugo mae jikan migration shori

Abstract

This paper reports pre-stack migration in elastic wave exploration as to its algorithm and examples of processed data. The time migration processing hypothesizes that seismic waves propagate linearly. It calculates travel time by dividing the sum of the straight distance from a vibration transmitting point to an image point and the straight distance from the image point to a vibration receiving point with RMS velocity given as a parameter. To maintain the relative relation of amplitude sizes, the signal on an elliptic body is made smaller in inverse proportion to the size of that elliptic body. With regard to apparent interval of input trace as seen from the reflection surface, or with regard to density, the signal is made smaller by cos{theta} times. While this program deals with three-dimensional migration, its output turns out as an arbitrary two-dimensional plane. The program requires a huge amount of data processing, whereas a method is used, that the input trace is divided, each group is processed by using separate computers, and the results are summed up. 3 refs., 4 figs.
Authors:
Nakajima, Y; Matsuoka, T; [1]  Tsuru, T [2] 
  1. Japan Petroleum Exploration Corp., Tokyo (Japan)
  2. Japan National Oil Corp., Tokyo (Japan)
Publication Date:
May 27, 1997
Product Type:
Conference
Report Number:
CONF-9705167-
Reference Number:
SCA: 440700; 580000; 990301; PA: NEDO-97:912238; EDB-97:120346; SN: 97001846530
Resource Relation:
Conference: 96. SEGJ conference, Butsuri tansa gakkai dai 96 kai (1997 nendo shunki) gakujutsu koenkai, Tokyo (Japan), 27-29 May 1997; Other Information: PBD: 27 May 1997; Related Information: Is Part Of Proceeding of the 96th (spring, fiscal 1997) SEGJ Conference; PB: 502 p.; Butsuri tansa gakkai dai 96 kai (1997 nendo shunki) gakujutsu koenkai koen ronbunshu
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 58 GEOSCIENCES; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; SEISMIC SURVEYS; REFLECTION; DATA PROCESSING; ALGORITHMS; COMPUTER CODES; SEISMIC WAVES; SEISMIC SOURCES; SEISMIC DETECTORS; DISTANCE; VELOCITY
OSTI ID:
522639
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97770262; TRN: 97:912238
Availability:
Available from The Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, Japan; OSTI as DE97770262
Submitting Site:
NEDO
Size:
pp. 170-173
Announcement Date:

Citation Formats

Nakajima, Y, Matsuoka, T, and Tsuru, T. 3D pre-stack time migration; Kiruhihoffuho ni yoru sanjigen jugo mae jikan migration shori. Japan: N. p., 1997. Web.
Nakajima, Y, Matsuoka, T, & Tsuru, T. 3D pre-stack time migration; Kiruhihoffuho ni yoru sanjigen jugo mae jikan migration shori. Japan.
Nakajima, Y, Matsuoka, T, and Tsuru, T. 1997. "3D pre-stack time migration; Kiruhihoffuho ni yoru sanjigen jugo mae jikan migration shori." Japan.
@misc{etde_522639,
title = {3D pre-stack time migration; Kiruhihoffuho ni yoru sanjigen jugo mae jikan migration shori}
author = {Nakajima, Y, Matsuoka, T, and Tsuru, T}
abstractNote = {This paper reports pre-stack migration in elastic wave exploration as to its algorithm and examples of processed data. The time migration processing hypothesizes that seismic waves propagate linearly. It calculates travel time by dividing the sum of the straight distance from a vibration transmitting point to an image point and the straight distance from the image point to a vibration receiving point with RMS velocity given as a parameter. To maintain the relative relation of amplitude sizes, the signal on an elliptic body is made smaller in inverse proportion to the size of that elliptic body. With regard to apparent interval of input trace as seen from the reflection surface, or with regard to density, the signal is made smaller by cos{theta} times. While this program deals with three-dimensional migration, its output turns out as an arbitrary two-dimensional plane. The program requires a huge amount of data processing, whereas a method is used, that the input trace is divided, each group is processed by using separate computers, and the results are summed up. 3 refs., 4 figs.}
place = {Japan}
year = {1997}
month = {May}
}