Explorer Article
By Ken Milam
EIA's Petroleum Supply Monthly report shows oil production in the lower 48 states has increased over the last three years.
American Association of Petroleum Geologists (AAPG)
Added on 01 July, 2013
Explorer Emphasis Article
By Louise Durham
Rocky Mountain high? Operators throughout the Rocky Mountains region have reasons to be cautious – but just as many reasons to smile.
American Association of Petroleum Geologists (AAPG)
Added on 01 June, 2013
Bulletin Article
Characterization of oil shale kerogen and organic residues remaining in postpyrolysis spent shale is critical to the understanding of the oil generation process and approaches to dealing with issues related to spent shale. The chemical structure of organic matter in raw oil shale and spent shale samples was examined in this study using advanced solid-state 13C nuclear magnetic resonance (NMR) spectroscopy. Oil shale was collected from Mahogany zone outcrops in the Piceance Basin. Five samples were analyzed: (1) raw oil shale, (2) isolated kerogen, (3) oil shale extracted with chloroform, (4) oil shale retorted in an open system at 500C to mimic surface retorting, and (5) oil shale retorted in a closed system at 360C to simulate in-situ retorting. The NMR methods applied included quantitative direct polarization with magic-angle spinning at 13 kHz, cross polarization with total sideband suppression, dipolar dephasing, CHn selection, 13C chemical shift anisotropy filtering, and 1H-13C long-range recoupled dipolar dephasing. The NMR results showed that, relative to the raw oil shale, (1) bitumen extraction and kerogen isolation by demineralization removed some oxygen-containing and alkyl moieties; (2) unpyrolyzed samples had low aromatic condensation; (3) oil shale pyrolysis removed aliphatic moieties, leaving behind residues enriched in aromatic carbon; and (4) oil shale retorted in an open system at 500C contained larger aromatic clusters and more protonated aromatic moieties than oil shale retorted in a closed system at 360C, which contained more total aromatic carbon with a wide range of cluster sizes.
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American Association of Petroleum Geologists (AAPG)
Added on 28 February, 2013
Explorer Foundation Update
By Natalie Adams
The Foundation Trustees approved three major funding requests when the group met in late November.
American Association of Petroleum Geologists (AAPG)
Added on 01 January, 2013
Explorer Regions and Sections
By Carol McGowen
September will be a busy month for the AAPG Sections – two groups will be holding their annual meetings, both in locales that boast geologic industry history and plenty of entertainment opportunities.
American Association of Petroleum Geologists (AAPG)
Added on 01 September, 2012
Explorer Division Column DEG
By Tom Temples
As the new president of the Division of Environmental Geosciences I get to begin my tenure with my views and thoughts of an area that DEG, and AAPG in general, needs to address.
American Association of Petroleum Geologists (AAPG)
Added on 01 September, 2012
Explorer President’s Column
By Ted Beaumont
An average of four dry holes are drilled through a giant field before the discovery is recognized, according to AAPG Sidney Powers Medalist Robert M. Sneider.
American Association of Petroleum Geologists (AAPG)
Added on 01 September, 2012
Explorer Division Column EMD
By Jeremy Boak
For more than 100 years, shale oil has referred to the product of pyrolysis of oil shale, whereas oil shale refers to organic rich (kerogen) rock that has never reached the oil window.
American Association of Petroleum Geologists (AAPG)
Added on 01 August, 2012
Explorer Emphasis Article
By Louise Durham
What do the numbers indicate when measuring Niobrara tight oil success in Colorado?
American Association of Petroleum Geologists (AAPG)
Added on 01 August, 2012