Summary
Permeability is the cornerstone of any reservoir-flow modeling that leads to
field development and production management. Typical sources of permeability
include cores, logs, wireline formation tests [or minidrillstem tests
(mini-DSTs)], and conventional DSTs. However, integrating various sources of
permeability at different scales is problematic. Anchored in mini-DST-derived
permeability, this study endeavors to integrate various sources of
permeability, leading to reservoir description in a turbidite sandstone
reservoir in the Sabah basin, Malaysia.
Pressure-transient-test data recorded during a mini-DST operation differed
significantly from data gathered during a conventional DST. Even though test
quality was excellent, interpretation challenges were numerous in this well.
Consequently, multidisciplinary information was brought to bear for integration
of data derived from mini-DSTs. Other sources of information included sidewall
cores, spot pressure measurements, nuclear magnetic resonance (NMR), and
microelectrical imaging logs. This case study demonstrates that, in this
particular setting, the use of mini-DSTs was cost-effective and yielded the
subsurface information required to plan field-development options.
© 2012. Society of Petroleum Engineers
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History
- Original manuscript received:
22 June 2011
- Meeting paper published:
21 September 2011
- Revised manuscript received:
19 November 2011
- Manuscript approved:
14 February 2012
- Published online:
10 May 2012
- Version of record:
12 June 2012
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