SPE Reservoir Evaluation & Engineering
Volume 12,
Number 4,
August 2009,
pp. 528-541
Summary
Streamline-based assisted and automatic history matching techniques have
shown great potential in reconciling high resolution geologic models to
production data. However, a major drawback of these approaches has been
incompressibility or slight compressibility assumptions that have limited
applications to two-phase water/oil displacements only. Recent generalization
of streamline models to compressible flow has greatly expanded the scope and
applicability of streamline-based history matching, in particular for
three-phase flow. In our previous work, we calibrated geologic models to
production data by matching the water cut (WCT) and gas/oil ratio (GOR) using
the generalized travel-time inversion (GTTI) technique. For field applications,
however, the highly nonmonotonic profile of the GOR data often presents a
challenge to this technique. In this work we present a transformation of the
field production data that makes it more amenable to GTTI. Further, we
generalize the approach to incorporate bottomhole flowing pressure during
three-phase history matching. We examine the practical feasibility of the
method using a field-scale synthetic example (SPE-9 comparative study) and a
field application. The field case is a highly faulted, west-African reservoir
with an underlying aquifer. The reservoir is produced under depletion with
three producers, and over thirty years of production history. The simulation
model has several pressure/volume/temperature (PVT) and special core analysis
(SCAL) regions and more than 100,000 cells. The GTTI is shown to be robust
because of its quasilinear properties as demonstrated by the WCT and GOR match
for a period of 30 years of production history.
© 2009. Society of Petroleum Engineers
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History
- Original manuscript received:
10 August 2007
- Meeting paper published:
11 November 2007
- Revised manuscript received:
6 March 2009
- Manuscript approved:
30 March 2009
- Published online:
6 August 2009
- Version of record:
9 September 2009
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