North Sea reservoir characterization using rock physics, seismic attributes, and neural networks; a case history

1999 ◽  
Author(s):  
Joel D. Walls ◽  
M. Turhan Taner ◽  
Tom Guidish ◽  
Gareth Taylor ◽  
David Dumas ◽  
...  
Keyword(s):  
Neural Networks ◽  
North Sea ◽  
Case History ◽  
Reservoir Characterization ◽  
Rock Physics ◽  
Seismic Attributes

Seismic reservoir characterization of a U.S. Midcontinent fluvial system using rock physics, poststack seismic attributes, and neural networks

2002 ◽  
Vol 21 (5) ◽  
pp. 428-436 ◽  
Author(s):  
Joel D. Walls ◽  
M. Turhan Taner ◽  
Gareth Taylor ◽  
Maggie Smith ◽  
Matthew Carr ◽  
...  
Keyword(s):  
Neural Networks ◽  
Reservoir Characterization ◽  
Rock Physics ◽  
Seismic Attributes ◽  
Fluvial System ◽  
Seismic Reservoir

The Brechin Field, Block 22/23a, UK North Sea

2020 ◽  
Vol 52 (1) ◽  
pp. 390-398 ◽  
Author(s):  
G. Goffey ◽  
S. Lunn ◽  
J. Seedhouse
Keyword(s):  
North Sea ◽  
Rock Physics ◽  
Seismic Attributes ◽  
Production Well ◽  
Constructive Interference ◽  
Water Contact ◽  
Cumulative Production ◽  
Single Production ◽  
Oil Water ◽  
Opposite Response

AbstractThe Brechin Field was discovered by Paladin Resources in 2004. The reservoir is the Paleocene Forties Sandstone Member, with oil trapped in a small dip closure. The prospect was identified as a bright anomaly on a fluid volume processed as part of a 4D survey. However, the anomaly was not consistent with rock physics modelling, and an earlier processed version of the baseline 3D survey showed the opposite response to the 4D datasets. It was established that the fluid anomaly on the 4D data resulted from constructive interference between reflections from the oil–water contact and from top reservoir. Thus, both versions of the data were responding to the presence of hydrocarbons.The discovery well, 22/23a-7, encountered 137 ft of gross oil-bearing reservoir. Without testing or further appraisal, the field was developed in 2005 with a single production well tieback to the Arbroath platform, via the production manifold at Arkwright Field. Brechin is now operated by Repsol Sinopec Resources and cumulative production to mid-2018 was 4.4 MMbbl. Seismic attributes and well-developed reservoir understanding from neighbouring analogue fields permitted the necessary de-risking of hydrocarbon presence, recovery and volumetric uncertainty, to permit the development of an otherwise economically marginal resource.

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