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Recently Added in Bulletin
 
The oils of the northern Tarim Basin are high in saturated hydrocarbons with significant volatilization of lighter hydrocarbons. The reservoir has undergone multistage accumulations with oils occurring in an early stage of intense oil-to-gas cracking.  Most of the gasses are wet.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/07072019015 Geochemistry of high-maturity crude oil and gas from deep reservoirs and their geological significance: A case study on Shuntuoguole low uplift, Tarim Basin, western China
 
This study evaluates the suitability of well log response to predict occurrence and organic richness of Cline shale depositional facies, an unconventional reservoir in the Permian Basin. Successful horizontal drilling correlates well with the most organically enriched petrofacies.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/07272020010 The prediction of organic-rich reservoir facies within the Late Pennsylvanian Cline shale (also known as Wolfcamp D), Midland Basin, Texas
 
Timing of petroleum generation is key to a better understanding of petroleum systems. The Re-Os geochronometer directly dates petroleum although low and uniform ratios of Re-Os as well as 187Os/188Os indicate that isotopic overprint is likely during water-oil interaction.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/02272019219 Timing and origin of multiple petroleum charges in the Solveig oil field, Norwegian North Sea: A rhenium-osmium isotopic study
 
The objective of this study in the southern Junggar Basin, China, was to understand coalbed methane genesis, investigate abnormal CO2 accumulation, study the development of microbial communities, and identify the source of coalbed water as well as the timing of methanogenesis.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/02282018273 A study of the gas–water characteristics and their implications for the coalbed methane accumulation modes in the Southern Junggar Basin, China
 
Fluid-filled water table caves remain open up to 10,000 m in depth while unfilled caves experience collapse around 1,000 m. Thus, caves can develop at near-surface conditions and remain open and intact at depth. Their presence can alter in place pore volume calculations.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/07072019196 The preservation of water-table caves at depth: Observations from subsurface data and numerical modeling
 
Analysis of 50 oil samples indicate the presence of 5 genetic groups in the Permian Basin of Texas and New Mexico. The results of the study have established a fundamental basis for developing play combinations, which embrace genetically similar oils.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/07072018176 Geochemical characterization and classification of crude oils of the Permian Basin, west Texas and southeastern New Mexico
 
Existing definitions for active and passive salt diapirism are ambiguous and overlapping. The authors propose that active diapirism be reserved for uploading and folding of a thick roof during diapir rejuvenation, while the absence of a thin roof should not be the key defining factor for passive diapirism.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/05212020001 Passive versus active salt diapirism
 
Comparative modeling of the tight oil and tight gas systems in the Ordos Basin has shown that integrating sedimentary heterogeneities into basin models can lead to significantly different and more realistic model results. The authors proposed coupled stratigraphic–basin modeling offers an alternative for future basin and petroleum system modeling.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/0727201612317147 Coupled stratigraphic and petroleum system modeling: Examples from the Ordos Basin, China
 
A basement weakness zone, Northwest Shelf of Australia, was subjected to extension in the latest Triassic to late Middle Jurassic, resulting in systematic segmentation of the Rosemary fault system. The style of basin boundary fault reactivation depends largely on pre-existing structures and temporal stress changes.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/03022019160 Multiphase activation of the boundary fault system of the eastern Dampier subbasin, Northwest Shelf of Australia
 
The Bakken and Three Forks are an important thight-oil resource play and a giant continuous accumulation. Many of the reservoirs in the Bakken petroleum system have low porosity and permeability. Reservoir facies with matrix permeability are key ingredients to sweet spot areas.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/09092020086 The Bakken–Three Forks super giant play, Williston Basin
Recently Added in Interpretation

Recently Added in Environmental Geosciences
 
To better understand controls on the origin and evolution of brackish groundwater, the hydrogeochemistry of brackish groundwaters was studied within the Triassic Dockum Group across the Midland Basin in Texas. The suitability of Dockum Aquifer water for use in hydraulic fracturing fluid was examined because the area overlies the largest and most productive tight oil province in the United States.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.01241817017 Hydrogeochemical controls on brackish groundwater and its suitability for use in hydraulic fracturing: The Dockum Aquifer, Midland Basin, Texas
 
Urbanization modifies the natural water cycle. In this study, a weighted-rating multicriteria analysis was adopted to quantify the runoff index and to assess the impact of urbanization on the water cycle.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.01241817015 Quantitative assessment of the runoff index in an urbanized watershed
 
Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of lithologic formations. The advent of remote sensing and geographic information systems (GIS) has opened up new vistas in groundwater prospect evaluation, exploration, and management.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.01241817010 Groundwater resources evaluation using geospatial technology
 
Integrated petrographic and chemostratigraphic studies have enabled the identification of sequence boundaries, sequence stratigraphy, and their system tracts for the Lower Cretaceous strata of the Kurnub Group (Jordan); the latter is underlain by the Jurassic (Callovian) strata and overlain by the Cretaceous (Cenomanian).
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.01241817012 Facies associations and chemostratigraphy of the Lower Cretaceous Kurnub Group and their boundaries, King Talal Dam section, northwestern Jordan
 
To achieve reclamation certification, oil-and-gas operations in Alberta, Canada are required to monitor the revegetation of idle well pads that no longer support operations. Currently, monitoring is completed by oblique, helicopter-collected photography and on-the-ground field surveys.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.07071717001 High-resolution satellite imagery applied to monitoring revegetation of oil-sands-exploration well pads
 
A dramatic increase in unconventional drilling that utilizes hydraulic fracturing to extract oil/gas over the past decade has led to concern over handling and management of produced/flowback water (PFW; hydraulic-fracturing wastewater) because the potential exists for its accidental release into the environment.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.06191716501 Strontium isotopes as a potential fingerprint of total dissolved solids associated with hydraulic-fracturing activities in the Barnett Shale, Texas
 
The stress regime in the Illinois Basin was investigated to assess how the rock column might respond to the injection of fluids, including coproduced formation brines and supercritical CO2.This response is a concern because injection practices could increase pore fluid pressure and potentially induce seismicity.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.0206171600817004 State of stress in the Illinois Basin and constraints on inducing failure
 
Development of geothermal energy in sedimentary basins is an attractive option given the availability of data from the oil and gas industry. Previous geothermal studies in sedimentary basins have focused on temperatures and petrophysical properties.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.0206171600917003 Geothermal energy potential of the Western Canada Sedimentary Basin: Clues from coproduced and injected water
 
This study demonstrates the application of aeromagnetic surveys for locating late 1800s-era oil and gas wells in Hillman State Park. The study area in southwestern Pennsylvania offered several unique challenges to locating legacy wells.
American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.1221161600417009 Methods and challenges to locating legacy wells in western Pennsylvania: Case study at Hillman State Park
 
Surface and airborne gas monitoring programs are becoming an important part of environmental protection in areas favorable for subsurface storage of carbon dioxide. Understanding structural architecture and its effects on the flux of fluids, specifically CO2 and CH4, in the shallow subsurface and atmosphere is helping with designing and implementing next-generation monitoring technologies, including unmanned aerial vehicles (UAVs).
Show more American Association of Petroleum Geologists (AAPG)
Mobile /Portals/0/images/_meta/meta_DEG_200x200.png?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true&format=jpg 10.1306/eg.1221161600317002 Structural architecture of the Farnsworth oil unit: Implications for geologic storage of carbon dioxide

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