Bulletin Article

 
Fluid migration along deep fault zones affected porosity in the Lower Saxony Basin.   Hydrothermal origin of ascending fluids rich in iron and CO2 increased porosity along fractures. Carbonate dissolution in the calcitic host rock increased porosity and permeability near the fracture walls.
American Association of Petroleum Geologists (AAPG)
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The influence of moisture, temperature, coal rank, and differential enthalpy on the methane (CH4) and carbon dioxide (CO2) sorption capacity of coals of different rank has been investigated by using high-pressure sorption isotherms at 303, 318, and 333 K (CH4) and 318, 333, and 348 K (CO2), respectively. The variation of sorption capacity was studied as a function of burial depth of coal seams using the corresponding Langmuir parameters in combination with a geothermal gradient of 0.03 K/m and a normal hydrostatic pressure gradient. Taking the gas content corresponding to 100% gas saturation at maximum burial depth as a reference value, the theoretical CH4 saturation after the uplift of the coal seam was computed as a function of depth. According to these calculations, the change in sorption capacity caused by changing pressure, temperature conditions during uplift will lead consistently to high saturation values. Therefore, the commonly observed undersaturation of coal seams is most likely related to dismigration (losses into adjacent formations and atmosphere). Finally, we attempt to identify sweet spots for CO2-enhanced coalbed methane (CO2-ECBM) production. The CO2-ECBM is expected to become less effective with increasing depth because the CO2-to-CH4 sorption capacity ratio decreases with increasing temperature and pressure. Furthermore, CO2-ECBM efficiency will decrease with increasing maturity because of the highest sorption capacity ratio and affinity difference between CO2 and CH4 for low mature coals.

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Events Blog

 

Be a part of history by presenting at the premier integrated geosciences event in 2017 at ICE in London incorporating AAPG’s 100th Anniversary. Your expert contribution and practical guidance will help promote and advance the exploration and production of global energy resources.

American Association of Petroleum Geologists (AAPG)
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Explorer Article

 

What’s next? Leaders of three AAPG Regions talk about anticipated activity and potential challenges their areas face in 2011. 

American Association of Petroleum Geologists (AAPG)
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Going global: Not all shale gas basins are created equal – but countries all over the world are intrigued by the possibilities.

American Association of Petroleum Geologists (AAPG)
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Explorer Division Column EMD

 

Over the past year or so we have observed strong evidence that nuclear power is into a new expansion period.

American Association of Petroleum Geologists (AAPG)
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Explorer Emphasis

 
While many are working to forecast when the price of oil might reach $80 a barrel again, renowned international strategist and geopolitical analyst Peter Zeihan, the author of “The Accidental Superpower,” predicts in stunning detail the rising and declining energy plays of 2025 and the countries that will ultimately triumph as the world’s leading producers.
American Association of Petroleum Geologists (AAPG)
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Construction continues for the new GE Global Research’s Oil & Gas Technology Center in Oklahoma City – part of the company’s three-year effort to triple R&D investment in the oil and gas industry. The $125 million facility “will be an incubator for new innovative technologies that will enable safe, efficient and reliable exploration, production, delivery and use of unconventional oil and gas.”

American Association of Petroleum Geologists (AAPG)
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Deeper targets, higher excitement: Industry enthusiasm for shale gas (and oil) plays just keeps escalating – and the interest is going global.

American Association of Petroleum Geologists (AAPG)
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When it comes to geothermal energy, Germany is feeling the heat – literally and figuratively – beneath its feet.

American Association of Petroleum Geologists (AAPG)
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Field Seminar

Houston Texas United States 02 April, 2017 02 April, 2017 36575
 
Houston, Texas, United States
2 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
This field trip explores Panther Creek, a natural laboratory to explore the morphology and sedimentological processes of a meandering creek system. Panther Creek is just a short drive north from Houston, tucked away just south of The Woodlands, Texas in the Montgomery County Preserve.

Miami Florida United States 26 March, 2017 01 April, 2017 36438
 
Miami, Florida, United States
26 March - 1 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
Carbonate rocks make up the majority of reservoirs being explored and exploited in unconventional resource plays. This trip will spend five days exploring a variety of modern, mud-dominated carbonate settings in South Florida, where the elements influencing the deposition of these unique strata will be observed first-hand and used as learning points for similar ancient deposits.

Short Course

Houston Texas United States 02 April, 2017 02 April, 2017 35013
 
Houston, Texas, United States
2 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
This course will provide an overview of concepts, tools, and methods commonly used for assessment of exploration risks associated with hydrocarbon charge, with emphasis on geochemical methods and applications.

Houston Texas United States 01 April, 2017 01 April, 2017 34922
 
Houston, Texas, United States
1 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
The course has multiple objectives: (1) understanding basic geochemical data and applying these data to shale resource plays, (2) advanced approaches to refine and identify sweet spots in existing plays.

Houston Texas United States 01 April, 2017 02 April, 2017 34991
 
Houston, Texas, United States
1-2 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
The course content will cover both the basics of biomarker interpretation and application and advanced geochemical technologies.

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