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Bulletin Article
Life span of oil reservoirs: Examples from three old reef pools in Alberta, Canada
Declining history of oil production of oil pools in Alberta, Canada, can be divided into two phases: a short (4-11 yr) substantially declining phase and a long (25-35 yr) gradually declining phase. Both can be described by power regressions with high correlation coefficients of 0.95-0.99.
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 10.1306/08122019100 Life span of oil reservoirs: Examples from three old reef pools in Alberta, Canada
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Bulletin Article
Experimental determination of porosity and methane sorption capacity of organic-rich shales as a function of effective stress: Implications for gas storage capacity
The gas storage capacity of shales can be strongly reduced under the influence of effective stress due to the decrease of specific pore volume. Also, a strong reduction of the excess sorption capacity occurs upon loading the samples up to 40 MPa overburden pressure.
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 10.1306/07212019086 Experimental determination of porosity and methane sorption capacity of organic-rich shales as a function of effective stress: Implications for gas storage capacity
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Bulletin Article
Characterization of five unconventional diatomaceous (opal-A) reservoirs, Monterey Formation, San Joaquin Valley, California
The diatomaceous reservoirs of the San Joaquin Valley, California, have puzzling features. They are continuously oil-saturated with poorly defined oil–water contacts. The best producers have the best oil saturations. The five reservoirs in this study do not represent a single homogenous group and have clear differences.
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 10.1306/07142018253 Characterization of five unconventional diatomaceous (opal-A) reservoirs, Monterey Formation, San Joaquin Valley, California
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Bulletin Article
Origin and charging histories of diagenetic traps in the Junggar Basin
In the Junggar Basin, accumulations in the sandy conglomerate formed in distributary channels of the fan-delta front, and reservoir quality was controlled by differential diagenesis caused by detrital feldspar content, paleogeotemperature, and formation fluids. Few studies have investigated this type of trap.
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 10.1306/07202017327 Origin and charging histories of diagenetic traps in the Junggar Basin
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Bulletin Article
Induced seismicity risk management: The problem of disappearing faults
The risk of injection-induced earthquakes is managed through buffer zones around previously mapped faults.  However, decades-old fault identification using now obsolete methods could misidentify other features as faults.   Regulations should take vintage surveys into account.
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 10.1306/07202019242 Induced seismicity risk management: The problem of disappearing faults
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Bulletin Article
Multiple thrust detachments and their implications for hydrocarbon accumulation in the northeastern Sichuan Basin, southwestern China
The authors address the structural deformation and evolution of the detachment thrust system and its effects on hydrocarbon accumulation in the northeastern Sichuan Basin, China. The lower structural interval has high-quality source rock and a reservoir-trapping evolutionary history.
American Association of Petroleum Geologists (AAPG)
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Bulletin Article
Brittleness modeling selects optimum stimulation zone in shaly source rocks in the Whangai Formation, New Zealand
The primary goal of this study was to develop an integrated methodology to define the best stimulation intervals in the Whangai Formation of New Zealand’s East Coast Basin. Evaluating the brittleness of shale reservoirs will help to identify zones to focus on hydraulic fracturing.
American Association of Petroleum Geologists (AAPG)
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Bulletin Article
Fractal characteristics of pore networks and sealing capacity of Ordovician carbonate cap rocks: A case study based on outcrop analogues from the Tarim Basin, China
The purpose of this study is to analyze the pore structures of Yingshan Formation carbonate cap rocks, Tarim Basin, China, and their fractal dimensions in order to unravel the link between fractal variations and rock sealing capacity. Sealing capacity decreases with increasing quantity of macropores.
American Association of Petroleum Geologists (AAPG)
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Bulletin Article
Coupled stratigraphic and petroleum system modeling: Examples from the Ordos Basin, China
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)
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Bulletin Article
Timing and origin of multiple petroleum charges in the Solveig oil field, Norwegian North Sea: A rhenium-osmium isotopic study
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)
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Recently Added in Interpretation

Recently Added in Environmental Geosciences
 
Environmental Geosciences Article
Hydrogeochemical controls on brackish groundwater and its suitability for use in hydraulic fracturing: The Dockum Aquifer, Midland Basin, Texas
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
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Environmental Geosciences Article
Quantitative assessment of the runoff index in an urbanized watershed
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
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Environmental Geosciences Article
Facies associations and chemostratigraphy of the Lower Cretaceous Kurnub Group and their boundaries, King Talal Dam section, northwestern Jordan
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)
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Environmental Geosciences Article
Groundwater resources evaluation using geospatial technology
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)
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Environmental Geosciences Article
Strontium isotopes as a potential fingerprint of total dissolved solids associated with hydraulic-fracturing activities in the Barnett Shale, Texas
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
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Environmental Geosciences Article
High-resolution satellite imagery applied to monitoring revegetation of oil-sands-exploration well pads
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
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Environmental Geosciences Article
State of stress in the Illinois Basin and constraints on inducing failure
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
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Environmental Geosciences Article
Geothermal energy potential of the Western Canada Sedimentary Basin: Clues from coproduced and injected water
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
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Environmental Geosciences Article
Methods and challenges to locating legacy wells in western Pennsylvania: Case study at Hillman State Park
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
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Environmental Geosciences Article
Structural architecture of the Farnsworth oil unit: Implications for geologic storage of carbon dioxide
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)
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