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7th Middle East Geosciences Conference and Exhibition
Manama, Bahrain
March 27-29, 2006
Model
of Fractures Within the Reservoir Property
Model
:
Humma Field, PNZ, Kuwait and Saudi Arabia
1 Midland Valley Exploration Ltd, 14 Park Circus, Glasgow, G3 6AX, United Kingdom, phone: 44
141 332 2681, fax: 44 141 332 2681, [email protected]
2 Chevron Energy Technology Company, 1500 Louisiana, Houston, 77002
3 Chevron International Exploration and Production Company
Fractured reservoir models can be built from static properties or from properties derived from a restoration of the interpreted
structural history of the reservoir. Strain-based fracture models ideally require some knowledge of the rock properties at the
time of deformation in order to predict fracture orientations and intensity. In order to evaluate the importance of the geologic
history relative to measured and known reservoir attributes related to fractures, a Discrete Feature Network (DFN) fracture
model
was generated from properties defined within the reservoir geocellular
model
. Fracture orientation properties
obtained from selected wells were distributed through the reservoir away from well data locations using an interpolation
algorithm. Key wells were withheld from the distribution calculation to test the validity of the distribution of the final DFN.
Other properties in the geocellular
model
, porosity, density, and seismic coherency, were
used
to constrain fracture
intensity and were combined with the fracture orientation properties to generate fractures throughout the reservoir
model
.
Properties calculated from the DFN are output directly into the reservoir property
model
as properties in addition to existing
matrix properties to create a fracture permeability property
model
ready for input to a flow simulator. Because the
calculation is fast, and can be done within the property
model
, it allows adjustments to be made where needed by using the
well production data to constrain the fracture length and aperture values. A fracture
model
was developed that honors well
data that can be
used
to further develop a field or plan enhanced recovery methods.