of Petroleum Engineers paper 102964, Annual Technical
Conference and Exhibition, San Antonio, Tex., Sept. 24-27,
2006.
5. G.J., Koperna, V.A., Kuuskraa, and Melzer, L.S., “
Recovery of Oil Resources from the Residual and Transitional
Oil Zones of the Permian Basin”, Society of Professional
Engineers, Annual Technical Conference and Exhibition, San
Antonio, TX, Sept 24-27, 2006.
dres formation to Wyoming and the southern Williston basin where ROZs have also been identified. 3-4
The author expects ROZs will be found in most basins
worldwide. Research has so far focused on carbonate reservoirs. But clastic reservoirs also can also contain ROZs. More
work needs to be done to better characterize clastic reservoirs and their wettability attributes, which play a vital role
in both reservoir depressuring and EOR project success.
References
1. Melzer, L.S., “Stranded Oil in the Residual Zone,” US
Department of Energy report, February 2006.
2. Trentham, R.C., Melzer, L.S., and Vance, D., “
Commercial Exploitation and the Origin of Residual Oil Zones: Developing a Case History in the Permian Basin of New Mexico
and West Texas,” Research Partnership to Secure Energy for
America report, June 2012.
3. Trentham, R.C., Melzer, L.S., Vance, D., Kuuskraa, V.A.,
and Petrusak, R., “Identifying and Developing Technology for
Enabling Small Producers to Pursue the Residual Oil Zone
(ROZ) Fairways in the Permian Basin San Andres Formation,”
RPSEA Final Report, Dec. 21, 2015.
4. Melzer, L.S., Koperna, G.J., and Kuuskraa, V.A., “The
Origin and Resource Potential of Residual Oil Zones,” Society
The author
L. Stephen Melzer ( melzerls@aol.com), an ROZ
and EOR consultant, has conducted regional
studies in the Permian basin on residual oil
zones from both scientific and commercial
perspectives, identifying reservoir depressuring
and EOR prospects in basins worldwide. Melzer
holds a BS in geological engineering from Texas
A&M University and an MSE in civil engineering and rock mechanics from Purdue University. He is a registered professional
engineer in Texas and a member of the American Association
of Petroleum Geologists, Society of Petroleum Engineers, and
Society of Independent Professional Earth Scientists.
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