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Recently Added in Bulletin
 
Pore type and pore-throat size are the major controlling factors for reservoir oil saturation in tight sandstones in the Quantou Formation, Songliao Basin, China. Pore-throat size distributions had wider ranges in the oil rich layers than in the samples lacking oil emplacement.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/04082018141 Insight into pore-throat size distribution and the controls on oil saturation of tight sandstone reservoirs using nuclear magnetic resonance parameters: A case study of the Lower Cretaceous Quantou Formation in the southern Songliao Basin, China
 
Three phases of calcite vein formation and two fluid flow events controlled by strike-slip faults occurred in the Tazhong area of the Tarim Basin. The timing of fault opening, hydrocarbon migration, and paleowater flow can be constrained based on hydrocarbon-bearing fluid inclusions in calcites.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/04222018285 Calcite vein system and its importance in tracing paleowater flow and hydrocarbon migration in the Ordovician carbonates of the Tazhong area, Tarim Basin, China
 
Reservoir characteristics of the Yanchang Formation, Ordos Basin, northwestern China, are used to identify diagenetic trends and processes responsible for improving reservoir quality and to develop a model for identifying reservoir sweet spots in tight sandstone formations.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/07062017116 Comparison of diagenetic characteristics and pore evolution in outcrops and cores of tight sandstone reservoirs in the Triassic Yanchang Formation, the Ordos Basin, China
 
Hydrocarbon migration modeling tools are important to test and quantify the processes that impact hydrocarbon migration. A new method of analyzing migration in superimposed basins is presented where multiple stages of basin subsidence and inversion occurred.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/0422201618817104 Petroleum migration and accumulation: Modeling and applications
 
The complex diagenetic alteration history and its effects on the pore-throat network and reservoir quality of the tight gas sandstones are discussed in this paper. The most important diagenetic factors for porosity reduction were compaction and cementation. This study can predict the development of pore throat systems.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/08151919058 Diagenetic alteration, pore-throat network, and reservoir quality of tight gas sandstone reservoirs: A case study of the upper Paleozoic sequence in the northern Tianhuan depression in the Ordos Basin, China
 
Underpressure is encountered in both onshore Svalbard as well as in the offshore petroleum province in the Jurassic and Triassic. Glacial loading, unloading, and erosion, potentially with the aid of natural fractures, is the likely dominant underpressure generating mechanism.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/02272019146 Underpressure in the northern Barents shelf: Causes and implications for hydrocarbon exploration
 
Detrital zircon U-Pb-Hf results from the Jeanne d’Arc Formation, Newfoundland, provide new constraints on synrift sandstone deposition in the Jeanne d’Arc basin. These results are consistent with the existence of Jurassic and Cretaceous rift-related units in the southwestern Grand Banks.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/02232018241 Provenance of Upper Jurassic to Lower Cretaceous synrift strata in the Terra Nova oil field, Jeanne d’Arc basin, offshore Newfoundland: A new detrital zircon U-Pb-Hf reference frame for the Atlantic Canadian margin
 
Yin et al. question the assumption of Wang et al. (2018) that vertical well data represent the true frequency distribution without a verification using a statistical or scientific method. Debiasing well data should be done before constructing a model. Wang et al. respond that the extent that bias is removed is difficult to assess. In some extreme cases, these debiasing methods may add extra bias to the geological model.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/09241919081 Application of horizontal wells in three-dimensional shale reservoir modeling: A case study of Longmaxi–Wufeng shale in Fuling gas field, Sichuan Basin: Discussion
 
Yin et al. question the assumption of Wang et al. (2018) that vertical well data represent the true frequency distribution without a verification using a statistical or scientific method. Debiasing well data should be done before constructing a model. Wang et al. respond that the extent that bias is removed is difficult to assess. In some extreme cases, these debiasing methods may add extra bias to the geological model.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/06042019251 Application of horizontal wells in three-dimensional shale reservoir modeling: A case study of Longmaxi–Wufeng shale in Fuling gas field, Sichuan Basin: Reply
 
Strata from the Silurian Salina Group and the Devonian Marcellus Shale in the Appalachian Plateau region of Lycoming County, Pennsylvania shortened through a variety of macroscale mechanisms. Shortening through wedge faulting equals the amount of layer-parallel shortening in the overlying strata.
American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/PackFlashItemImages/WebReady/bltn19165f5-hero.jpg?width=100&h=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true 10.1306/04282017325 Documenting the geometry and magnitude of shortening at the Allegheny Front: Lycoming County, Pennsylvania, United States
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)
Desktop /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)
Desktop /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)
Desktop /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)
Desktop /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
 
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)
Desktop /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
 
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)
Desktop /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
 
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)
Desktop /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
 
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)
Desktop /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
 
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)
Desktop /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)
Desktop /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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