seismic balancing to improve interpretation results – a case study from the joseph bonaparte gulf...
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![Page 1: Seismic Balancing to Improve Interpretation Results – A Case Study from the Joseph Bonaparte Gulf Keith Woollard - GeoCom Services Australia Pty Ltd Audrey](https://reader035.vdocument.in/reader035/viewer/2022062421/56649d215503460f949f711d/html5/thumbnails/1.jpg)
Seismic Balancing to Improve Interpretation Results – A Case Study from the Joseph Bonaparte Gulf
Keith Woollard - GeoCom Services Australia Pty Ltd
Audrey Leonard - Woodside Energy Limited
Amanda Panting - Woodside Energy Limited
In Alliance with
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What Are We Going To See?
Nothing new Nothing high tech Nothing expensive Not even any 3d
Cost effective methodology to improve interpretability of multi-vintage 2d
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Introduction
The Woodside Energy Limited and Shell Alliance was awarded 3 blocks Offshore Southern Bonaparte Basin
6500km 2d seismic recorded and processed Existing 8 bit loaded seismic grid
20000km44 “vintages” ranging from 1967 to 1997670 seismic linesGood data qualitySome loading problems
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Location
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Seismic CoverageWA279P&WA280P STUDY AREA
127°30'00"E 128°00'00"E 128°30'00"E 129°00'00"E 129°30'00"E
15°30'00"S
15°00'00"S
14°30'00"S
14°00'00"S
13°30'00"S
300 000M E 400 000M E 500 000M E 600 000M E
8 300 000M N
8 400 000M N
8 500 000M N
127°00'00"E 130°00'00"E16°00'00"S
13°00'00"S
Woodside Offshore Petroleum
Author :
Date : 18-AUG-1999 08:32:03
Drafted By : wopt5h
Mapsheet : TSH_WA279P&WA280P
Zone : 52Scale : 1:500000
Enc losure :
0 10 20 30 40 501:500000
KILOMETRES
0 4 8 12 16 20
MILES
UNI VERSAL TRANSVERSE MERCATOR PROJECTI ON
AUSTRALI AN NATI ONAL SPHEROI D
CENTRAL MERI DI AN 129°00'00"E
EP 66
EP(A) 74
EP(A) 75
NT/P 46
NT/P 57
RL 1
EP 386
WA-128-P
WA-18-P
WA-279-P
WA-280-P
Barnett-1Barnett-2Barnett-3
Berkley-1
Billawock-1
Bonaparte-1
Bonaparte-2
Bougainville-1
Bullo River-1
Cambridge-1
Cape Ford-1
Frigate-1
Garimala-1Keep River-1
Kingfisher-1
Kinmore-1
Kulshill-1Kulshill-2
Lacrosse-1
Legune Water Bore-1
Legune Water Bore-4Legune Water Bore-6
Lesueur-1
Matilda-1
Moyle-1
Ningbing-1Ningbing-2
Pelican Island-1
Penguin-1
Pincombe-1
Sandpiper-1
Skull-1
Spirit Hill-1
Sunbird-1
Tern-1
Tern-2
Tern-3
Tern-4Tern-5
Turtle-1Turtle-2
Vienta-1
Waggon Creek-1Waggon Creek-1aWeaber-1Weaber-2Weaber-2aWeaber-3Weaber-4Weaber-5
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Example Traverse
89BO CB94 89RX 99W CB80
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Computing the Misties
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Why use Statistics?
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Balanced Traverse
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Comparison Traverse
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FastTrack Setup
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FastTrack OutputRaw Balanced
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FastTrack OutputRaw Balanced
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Non-normalised AmplitudeRaw Balanced
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Normalised Amplitude
ms
ms
amplitudes
mplitudeFastTrackANormalised
150
150
)(751
Raw Balanced
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Effect of Phase on AmplitudeRaw Balanced
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FastTrack Setup
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FastTrack RunRaw Balanced
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Normalised FastTrack AmplitudeRaw Balanced
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Mispicked SeismicRaw Balanced
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Mispicked SeismicRaw Balanced
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Summary
Used only standard tools, SeismicBalance and UNIX
Significantly increased the quality of regional 2d dataset
Allowed better use of Autotrackers Mapping is faster and more reliable
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Acknowledgments
Woodside Energy Limited Shell Development Australia