Publications
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Assessment of tight-oil and tight-gas resources in the Junggar and Santanghu Basins of Northwestern China, 2018
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 241 million barrels of tight oil and 10.1 trillion cubic feet of tight gas in the Junggar and Santanghu Basins of northwestern China.
Authors
Christopher J. Potter, Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Thomas M. Finn, Cheryl A. Woodall, Heidi M. Leathers-Miller, Kristen R. Marra, Phuong A. Le, Ronald M. Drake, Michael E. Brownfield, Janet K. Pitman
Viable long-term gas hydrate testing site confirmed on the Alaska north slope
In December 2018, data acquired in a Stratigraphic Test Well drilled from the 7-11-12 pad in the western part of the Prudhoe Bay Unit, Alaska North Slope confirmed the occurrence of two high-quality reservoirs fully saturated with gas hydrate. The drilling was the initial phase of a planned, three-well program designed to conduct an extended duration test of the response to gas hydrate reservoirs
Authors
Ray Boswell, Scott Marsteller, Nori Okinaka, Motoi Wakatsuki, Timothy S. Collett, Robert Hunter, Tom Walsh, David Itter, Stephen Crumley
Variability of estimated ultimate recovery in shale oil and shale gas accumulations in the U.S.
Variability of mean EURs within and between unconventional reservoirs is becoming more apparent as thousands of wells are drilled and oil and gas is produced from unconventional low-permeability reservoirs. Production from many of these reservoirs shows that there is spatial heterogeneity of EURs, which is mainly related to geologic characteristics. The more refined view of spatial heterogeneity r
Authors
Christopher J. Schenk, Heidi M. Leathers-Miller
An ANCOVA model for porosity and its uncertainty for oil reservoirs based on TORIS dataset
Porosity is one of the most important parameters to assess in-place oil or gas in reservoirs, and to evaluate recovery from enhanced production operations. Since it is relatively well-established to determine porosity using different laboratory and field methods, its value is usually determined at many locations across a reservoir as part of the common practice to capture reservoir heterogeneity a
Authors
C. Özgen Karacan
Trends in biodiversity and habitat quantification tools used for market‐based conservation in the United States
Market-based conservation mechanisms are designed to facilitate conservation and mitigation actions for habitat and biodiversity. Their potential is partly hindered, however, by issues surrounding the quantification tools used to assess habitat quality and functionality. Specifically, a lack of transparency and standardization in tool development and gaps in tool availability are cited concerns.
Authors
Scott J. Chiavacci, Emily J. Pindilli
Application of electron microscopy TEM and SEM for analysis of coals, organic-rich shales and carbonaceous matter
This paper provides a brief summary of the history, development and variety of applications of electron microscopy
techniques to analyze coals, organic-rich shales, and carbonaceous materials. General construction and principles of
operation of transmitted (TEM) and scanning electron microscope (SEM) are outlined, along with guidance on
specimen preparation, and a brief overview of published TEM a
Authors
B. Kwiecińska, Brett J. Valentine, S. Pusz
Assessment of Paleozoic Shale-Oil and Shale-Gas Resources in the Tarim Basin of China, 2018
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.4 billion barrels of shale oil and 26.9 trillion cubic feet of shale gas in Paleozoic formations in the Tarim Basin of China.
Authors
Christopher J. Potter, Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Thomas M. Finn, Cheryl A. Woodall, Heidi M. Leathers-Miller, Kristen R. Marra, Phuong A. Le, Ronald M. Drake, Michael E. Brownfield, Janet K. Pitman
Assessment of Undiscovered Oil and Gas Resources of the Reggane Basin Province, Algeria, 2018
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.3 billion barrels of oil and 63 trillion cubic feet of gas in the Reggane Basin Province of Algeria.
Authors
Christopher J. Schenk, Michael E. Brownfield, Tracey J. Mercier, Cheryl A. Woodall, Phuong A. Le, Marilyn E. Tennyson, Thomas M. Finn, Kristen R. Marra, Stephanie B. Gaswirth, Heidi M. Leathers-Miller, Janet K. Pitman, Ronald M. Drake
Assessment of coal mine methane (CMM) and abandoned mine methane (AMM) resource potential of longwall mine panels: example from Northern Appalachian Basin, USA
"Coal mine methane (CMM) and abandoned mine methane (AMM), are by-products of underground coal mining. The quantity and the emission rate of CMM and AMM may vary depending on the type of mine, gas content of the mined coal seam, and gas sourced from strata and coal beds in overlying and underlying formations affected by mining. Therefore, if a mine has the potential of accumulating gas after being
Authors
C. Özgen Karacan, Peter D. Warwick
Insights from Rock-Eval analysis on the influence of sample weight on hydrocarbon generation from Lower Permian organic-matter rich rocks, West Bokaro basin, India
Among the different Rock-Eval parameters, the hydrocarbons released under S2 peak of Rock-Eval is of significance as it indicates the residual hydrocarbon content of the rock. Further, through its relationship with TOC content, it helps in calculating hydrogen indices (HI) which helps in understanding the type of organic-matter present in a rock [HI= (S2/TOC)*100]. The present study documents the
Authors
B Hazra, C. Özgen Karacan, Mani T Devleena, Pradeep K. Singh, Ashok K. Singh
Geology and assessment of undiscovered oil and gas resources of the Northwest Canada Interior Basins Province, Arctic Canada
The Northwest Canada Interior Basins Province is bounded by the Mackenzie and Richardson Mountains on the southwest and west, by the Eskimo Lakes Arch on the northwest, and by the erosional limit of Paleozoic strata on the east. It lies within the far northwest part of the Paleozoic continent of Laurentia. During early Paleozoic time, it was part of a passive margin formed when the Neoproterozoic
Authors
Marilyn E. Tennyson, Janet K. Pitman
Assessment experimental semivariogram uncertainty in the presence of a polynomial drift
The semivariogram, which measures the spatial variability between experimental data, is generally used as a structural input in all two-point geostatistical procedures. However, in most geoscience applications, experimental semivariograms are usually computed from a limited number of sparsely spaced measurements, which results in uncertainty associated with the semivariance values estimated for a
Authors
Erten Oktay, Eulogio Pardo-Igúzquiza, Ricardo A. Olea