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E and P Notes |
1 Petroleum Consultant, 1511 18th Avenue East, Seattle, Washington 98112; scott.montgomery{at}prodigy.net
2 Kansas Geological Survey, 1930 Constant Ave., Lawrence, Kansas 66047-3726
3 Kansas Geological Survey, 1930 Constant Ave., Lawrence, Kansas 66047-3726
4 Kansas Geological Survey, 1930 Constant Ave., Lawrence, Kansas 66047-3726
5 Kansas Geological Survey, 1930 Constant Ave., Lawrence, Kansas 66047-3726
6 Kansas Geological Survey, 1930 Constant Ave., Lawrence, Kansas 66047-3726
7 Kansas Geological Survey, 1930 Constant Ave., Lawrence, Kansas 66047-3726
Scott L. Montgomery is a petroleum consultant and author residing in Seattle, Washington. He received his B.A. degree in English from Knox College in 1973 and his M.S. degree in geological sciences from Cornell University in 1978. He is widely published in the geosciences, and since 1996 he has been principal author of the E&P Notes series in the AAPG Bulletin. His other publications include seven books on topics in petro-leum geology, science education, and the history of sci-ence, plus articles and monographs related to frontierplays, new technologies, field studies, and reservoir characterization.Evan K. Franseen received his B.S. and M.S. degrees and Ph.D. in geology from the University of Wisconsin-Madison. Since 1989 he has worked at the Kansas Geological Survey, University of Kansas, where currently he is an associate scientist within the petroleum research section. His research interests are in carbonate sedimentology, diagenesis, and sequence stratigraphy and integration of seismic, ground-penetrating radar, and geochemical and modeling techniques to understand controls on sedimentary systems and reservoir character.
Saibal Bhattacharya is a reservoir engineer working at the Kansas Geological Survey in Lawrence, Kansas. He received his bachelor's degree in petroleum engineering from the Indian School of Mines, Dhanbad, India, in 1987. He worked as a reservoir engineer for the Oil and Natural Gas Commission (ONGC), India, until 1991. He completed his M.S. degree in petroleum engineering in December 1995 and his M.S. degree in environmental engineering in December 1996 from the University of Kansas, Lawrence, Kansas. Since then, he has worked at the Kansas Geological Survey on reservoir characterization and simulation projects and has developed cost-effective applications software to link petrophysical analysis with reservoir simulation. He is a member of the Society of Petroleum Engineers and AAPG.
Paul Gerlach is currently employed as a research scientist at the Kansas Geological Survey. His current research projects include Internet and Global Information System applications in petroleum geology, visualization of spatial geologic data, petroleum resource assessment and modeling, and reservoir characterization and simulation. Gerlach started his career in 1976 as an exploration geologist in the oil and gas industry. He has extensive experience in oil and gas exploration and production throughout the mid-continent and Rocky Mountains.
Alan Byrnes received his B.S. degree in geology from the University of Illinois at Chicago and his M.S. degree in geophysical sciences from the University of Chicago. He has been a research geologist at the Institute of Gas Technology, Marathon Oil Company Research Center, Core Laboratories, Tetra Tech, and owned and operated GeoCore, a special core analysis laboratory, prior to joining the Kansas Geological Survey in 1997. He presently performs applied research in lithologic controls on petrophysical properties with emphasis on CO2-enhanced oil recovery, formation evaluation, reservoir characterization, and modeling.
Willard "Bill" Guy is a research geologist with the Kansas Geological Survey in Lawrence, Kansas. He received a B.A. degree (geology) in 1955 from the University of Colorado. He spent 25 years with Pure-Union Oil Company of California, six years with an independent oil company, and five years as a consultant-retired. He joined the Kansas Geological Survey in 1991. His areas of interest are in the evaluation of petroleum reservoirs using petrophysical tools such as wireline logs, special core analyses, and drill-stem tests.
Tim Carr received his B.S. degree in economics and a Ph.D. in geology from the University of Wisconsin, along with an M.S. degree from Texas Tech University. He worked for 13 years at ARCO as a research and exploration geologist, moving in 1991 to the Kansas Geological Survey as chief of the petroleum research section. Currently, he is also co-director of the University of Kansas Energy Research Center and courtesy professor of geology. His present research interests are in the areas of petroleum geology and geophysics, environmental geology, and developing petroleum information systems.
Schaben field (Kansas), located along the northeastern shelf of the Hugoton embayment, produces from Mississippian carbonates in erosional highs immediately beneath a regional unconformity. Production comes from depths of around 4400 ft (1342 m) in partially dolomitized shelf deposits. A detailed reservoir characterization/simulation study, recently performed as part of a Department of Energy Reservoir Class Oil Field Demonstration Project, has led to important revision in explanations for observed patterns of production. Cores recovered from three new data wells identify three main facies: spicule-rich wackestone-packstone, echinoderm wackestone/packstone/grainstone, and dolomitic mudstone-wackestone. Reservoir quality is highest in spicule-rich wackestone/packstones but is subject to a very high degree of vertical heterogeneity due to facies interbedding, silicification, and variable natural fracturing. The oil reservoir is underlain by an active aquifer, which helps maintain reservoir pressure but supports significant water production. Reservoir simulation, using public-domain, PC-based software, suggests that infill drilling is an efficient approach to enhanced recovery. Recent drilling directed by simulation results has shown considerable success in improving field production rates. Results from the Schaben field demonstration project are likely to have wide application for independent oil and exploration companies in western Kansas.
This article has been cited by other articles:
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  S. Bhattacharya, J. H. Doveton, T. R. Carr, W. R. Guy, and P. M. Gerlach Integrated core-log petrofacies analysis in the construction of a reservoir geomodel: A case study of a mature Mississippian carbonate reservoir using limited data AAPG Bulletin, October 1, 2005; 89(10): 1257 - 1274. [Abstract] [Full Text] [PDF]
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