Estimating lateral positioning uncertainty after anisotropic depth migration: A thrust belt case history

2008 ◽  
Author(s):  
Rob A. Holt ◽  
Doug Campbell
Keyword(s):  
Case History ◽  
Thrust Belt ◽  
Depth Migration ◽  
Lateral Positioning

The application of 3-D depth migration to the development of an Alaskan offshore oil field

Geophysics ◽  
1994 ◽  
Vol 59 (10) ◽  
pp. 1551-1560 ◽  
Author(s):  
David N. Whitcombe ◽  
Eugene H. Murray ◽  
Laurie A. St. Aubin ◽  
Randall J. Carroll
Keyword(s):  
Velocity Model ◽  
Oil Field ◽  
Northwestern Part ◽  
Positioning Error ◽  
Depth Migration ◽  
Velocity Models ◽  
Positioning Errors ◽  
Ray Trace ◽  
Offshore Oil ◽  
Lateral Positioning

Inconsistencies in fault positioning between overlapping 3-D seismic surveys over the northwestern part of the Endicott Field highlighted lateral positioning errors of the order of 1000 ft (330 m) in the seismic images. This large uncertainty in fault positioning placed a high and often unacceptable risk on the placement of wells. To quantify and correct for the seismic positioning error, 3-D velocity models were developed for ray‐trace modeling. The lateral positioning error maps produced revealed significant variation in the mispositioning within the Endicott Field that were mainly caused by lateral variations in permafrost thickness. These maps have been used to correct the positions of mapped features and have enabled several wells to be successfully placed close to major faults. Prior to this analysis, these wells were considered too risky to place optimally. The seismic data were 3-D poststack depth migrated with the final velocity model, producing a repositioned image that was consistent with the ray‐trace predictions. Additionally, a general enhancement of data imaging improved the interpretability and enabled the remapping and subsequent successful development of the peripheral Sag Delta North accumulation.

A multi‐survey 3D prestack depth migration case history from the UK Southern North Sea

1998 ◽  
Author(s):  
B. Henry ◽  
A. Strachan ◽  
I. F. Jones ◽  
M. Gainski ◽  
J. Kommedal
Keyword(s):  
North Sea ◽  
Case History ◽  
Prestack Depth Migration ◽  
Depth Migration ◽  
Southern North Sea ◽  
The Uk

Depth migration: The key to perfect solutions? A case history

1993 ◽  
Author(s):  
H. J. Zoch ◽  
Z. Sipos ◽  
L. Florchinger ◽  
R. Marshall
Keyword(s):  
Case History ◽  
Depth Migration

3‐D depth migration of the Mahogany survey: A case history

1995 ◽  
Author(s):  
Karl L. Schleicher ◽  
S. Jerry Kapoor ◽  
Uwe K. Albertin ◽  
Paul J. Fowler ◽  
Louis J. Ward
Keyword(s):  
Case History ◽  
Depth Migration

3-D Pre-Stack Depth Migration: Implementation and Case History

1992 ◽  
Vol 23 (1-2) ◽  
pp. 43-46
Author(s):  
J. Cabrera ◽  
W. Perkins ◽  
W. Lynn ◽  
D. Ratcliffe ◽  
W. French
Keyword(s):  
Case History ◽  
Depth Migration
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