- Reservoir consists of three sands as opposed to what was
originally considered to be a single layer reservoir.
- Petrophysical studies show that the fraction of the pore
volume occupied by water increases from sand #1 to sand #3. From
the limited data that is available, it appears that the cut-off
value of water saturation for water-free production is higher
in sand #3 as compared to the other two sands.
- Responses to water flooding have occurred in most wells.
- Injection water breakthroughs to the producing wells indicating
- Production response to water flooding indicates that sand
#2 and sand #3 are in communication around the injector #3-1.
- Primary recovery has been 29% of OOIP.
- Secondary recovery from water flood has been very poor, i.e.;
about 3% of reserves remaining at the onset of the flood, and
thus significant recoverable reserves remain.
- Identify the connectivity between the sands and also the
permeability distributions within the sands.
- Gather reservoir pressure and PVT data to carry out a material
balance study to cross check the reservoir volumetrics.
- Simulate the field performance under solution gas drive and
under the current water flood.
- Design an effective strategy to recover residual oil that
has been bypassed by the waterflood in place.
- Doveton, J.H., W.L. Guy, W.L. Watney, G.C. Bohling, S. Ullah,
and D. Adkins-Heljeson, 1996, Log Analysis of petrofacies and
flow-units with microcomputer spreadsheet software: 1995 American
Association of Petroleum Geologist Mid-Continent Meeting.
- Bhattacharya, S., W.L. Watney, J.H. Doveton, W.L. Guy, and
Geoff Bohling, 1999, From geomodels to engineering models - opportunities
for spreadsheet computing: 19th Annual B.F. Perkins Research
Conference, Gulf Coast Section Society of Economic Paleontologists
and Mineralogists Foundation, December 1999.
- Mathews, C.S., and D.G. Russell, 1967, Pressure buildup and
flow tests in wells: SPE Monograph Volume 1, Henry L. Doherty
- Reid, H.W., Modern concepts in drillstem testing: Hugh W.
Reid & Associates Ltd, Calgary, Canada.
- McCain, W.D., The properties of petroleum fluids: 2nd Edition,
PennWell Books, 1990, Tulsa, Oaklahoma.
- SPE Petroleum engineering handbook: 3rd printing, 1992, Richardson,
Texas (page 37-2)
- API Bulletin D14, Statistical analysis of crude oil recovery
and recovery efficiency: April 1994. (page 5)
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