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New data including measured reflectance (%Ro), programmed open-system pyrolysis data, and kerogen elemental analyses obtained on the Mississippian Barnett Shale in the Fort Worth Basin, Texas indicate that secondary gas generation starts at 1.5 %Ro and not at the previously prescribed 1.1 %Ro.
American Association of Petroleum Geologists (AAPG)
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Water salinity in the San Joaquin Valley is a function of depth, location and stratigraphy.  This paper presents a reconnaissance study of water salinity within Kern County, California using chemical analyses from oilfield produced water and water wells as well as geophysical logs.
American Association of Petroleum Geologists (AAPG)
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The Permian Khuff-C reservoir in Saudi Arabia is known for its lateral and vertical heterogeneity caused mainly by dolomitization. Detailed petrographic analysis of 600 thin sections, from six cored wells, revealed three main replacive dolomite fabrics: (1) fabric-preserving mimetic (FPM) dolomite, (2) fabric-preserving nonmimetic (FPNM) dolomite, and (3) fabric-destructive (FD) dolomite. Crystal sizes are mostly £ 20 mm for FPM dolomite, £ 50 mm for FPNM dolomite, and £ 100 mm for FD dolomite.
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Fresh cores from tight rock samples of subsurface hydrocarbon reservoirs retain mobile fluids. These fluids have complex chemical compositions and a large spectrum of molecules with different diameters and polarities.
American Association of Petroleum Geologists (AAPG)
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The Fort Worth basin in north-central Texas is a major shale-gas producer, yet its subsidence history and relationship to the Ouachita fold-and-thrust belt have not been well understood. We studied the depositional patterns of the basin during the late Paleozoic by correlating well logs and constructing structure and isopach maps.
American Association of Petroleum Geologists (AAPG)
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Longtime AAPG Foundation supporter and leader Frank Harrison Jr., a founder of the group’s highly successful Trustee Associates, is this year’s recipient of the AAPG Foundation Chairman’s Award.

American Association of Petroleum Geologists (AAPG)
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Despite the fact that we’re still a couple months out from the 100th Anniversary AAPG Annual Convention and Exhibition (ACE) in Houston, it’s never too early to start planning your meeting itinerary.

American Association of Petroleum Geologists (AAPG)
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Wildfires might be what come to mind when most people think of northeastern Alberta, owing to recent news coverage of the record evacuation of about 88,000 people from the Fort McMurray area. Current events notwithstanding, however, northeastern Alberta is historically best known for its huge bitumen resources.

American Association of Petroleum Geologists (AAPG)
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It was a hard-fought and divisive political season – one that has raised anxiety levels both in the United States and abroad. It is now up to the new president and the Republican-controlled 115th Congress to get to work.

American Association of Petroleum Geologists (AAPG)
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Seismic discontinuity attributes such as coherence and curvature are routinely applied to 3-D seismic data volumes to delineate faults or fractures, channel and reef edges, and other geological features.

American Association of Petroleum Geologists (AAPG)
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Recently Added Special Publications
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This volume covers the linkage between new transform margin research and increasing transform margin exploration. It offers a critical set of predictive tools via an understanding of the mechanisms involved in the development of play concept elements at transform margins.
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Originally published in 1991, this memoir offers a unique, detailed analysis on solving one of petroleum geology's most perplexing problems -- reservoir prediction.
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The 17 papers in this volume cover topics such as a method to estimate the amount of oil/gas accumulation using the concept of equivalent grain size in seal rock, and oil/gas migration to and spill-point geometry of petroleum traps; two case studies of fault seal assessment applied to normal faults in Tertiary clastic reservoirs in offshore Sarawak and offshore Gulf of Thailand; and physical analog studies of the development of extensional faults.

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This volume contains 10 chapters on coal-bearing strata of Carboniferous through Tertiary age and is based on a special session taht was held at an AAPG Annual Meeting in New Orleans. Contributors have employed a multitude of approaches ranging from basin analysis to plant taphonomy to support a variety of views on the sequence stratigraphy, paleoclimate, and tectonics of coal-bearing strata.
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AAPG Datapages and the AAPG GIS Publications Committee wish to thank Katharine Lee Avary, the Department of Energy’s Eastern Gas Shales Project (EGSP), the United States Geological Survey (USGS) and the AAPGF-OSU Geoscience GIS Consortium for allowing the Devonian Shales of the Appalachian Basin GIS Dataset to be posted on Datapages’ GIS Open Files page, thereby making it available to the public as a free download.

American Association of Petroleum Geologists (AAPG)
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Methane clathrate (CH4·5.75H2O) or (4CH4·23H2O), also called methane hydrate, hydromethane, methane ice, fire ice, natural gas hydrate, or gas hydrate, is a solid clathrate compound (more specifically, a clathrate hydrate) in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice. Originally thought to occur only in the outer regions of the Solar System, where temperatures are low and water ice is common, significant deposits of methane clathrate have been found under sediments on the ocean floors of the Earth.
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This zipped file contains geodatabase and xls (Excel) tables used by ExxonMobil in creating and editing geologic GIS feature classes and building attribute tables. AAPG Datapages, Inc. appreciates the efforts by the AAPG GIS Publication committee and ExxonMobil.
American Association of Petroleum Geologists (AAPG)
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These datasets depict the location and extent of oil and gas fields and pools across Pennsylvania, provide basic reservoir characterization data at the pool level (to the extent possible), and provide representative well-specific data to chronicle the evolution of the petroleum industry from the time of Drake’s well (Titusville, 1859) through the end of calendar year 2011.
American Association of Petroleum Geologists (AAPG)
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This is a regional study that stretches from Anderson County, Texas in the northeast to Fayette County, Texas in the southwest. The GIS data captures individual formations in the Wilcox Group, plus the Carrizo Sand unit: maximum sand thickness, net sand thickness, lignite thickness, resistivity of maximum sand thickness (to delineate ground water movement) and percent sand
American Association of Petroleum Geologists (AAPG)
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ACE is one of the world’s premier geoscience events that is completely created and hosted by geoscientists for geoscientists; therefore, your company’s support translates into a valuable return on investment for our shared industry success. We invite you to book your exhibit space today and share this milestone with us.

American Association of Petroleum Geologists (AAPG)
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Welcome to an interview with the Panton Data Science Team, who are working in drone-based projects where they are pushing the envelope with respect to applications and accuracy, thanks to a unique approach to data collection and analytics.

American Association of Petroleum Geologists (AAPG)
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APPEX Global returns to London in less than two weeks! Do you have your pass?

American Association of Petroleum Geologists (AAPG)
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Don't miss the chance to show your company's support for the petroleum geosciences community while aligning your brand with 100 years of scientific excellence. Secure your sponsorships today!

American Association of Petroleum Geologists (AAPG)
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We need your help! Tell us who you think deserves a top professorial honor for outstanding leadership and inspiring the future of geoscience.

American Association of Petroleum Geologists (AAPG)
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