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Alternative Resources

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The technical program is now in place and registrations are being accepted for the second annual Unconventional Resources Technology (URTeC) Conference, which will be held Aug. 25-27 at the Colorado Convention Center in Denver.

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Explorer Article

Mystery of the deep: No one knows for sure what quantity of gas hydrates awaits discovery deep in the earth, but projections are auspicious.

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Explorer Article

To be an innovator in the never-ending search for new oil and gas resources, a good geologist needs to escape the stagnating perils of paradigm paralysis by being equal parts Captain Kirk and Mr. Spock.

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Explorer Historical Highlight

Great Britain in the late 18th and early 19th centuries was undergoing great change. The Industrial Revolution was in full flood and there was an insatiable desire for coal to turn the wheels of industry.

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Energy Policy Blog

Comment period is open for the EPA proposed rule that would require CCS, carbon capture and storage. The Environmental Protection Agency (EPA) proposed rule, "Standards of Performance for Greenhouse Gas Emissions for New Stationary Sources: Electric Utility Generating Units," is open for comment until March 10.

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Energy Policy Blog

Carbon capture and sequestration (CCS) is perhaps commercially viable but not proven at commercial scale, according to 100 clean-energy experts that recently released their recommendations to the White House: "Powering Forward: Presidential and Executive Agency Actions to Drive Clean Energy in America."

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Every six months, chairs of the Energy Minerals Division committees convene and report on developments in the areas they cover. In this column, we highlight important observations from these recent reports.

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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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Predicting the presence and connectivity of reservoir-quality facies in otherwise mud-prone fluvial overbank successions is important because such sand bodies can potentially provide connectivity between larger neighboring sand bodies. This article addresses minor channelized fluvial elements (crevasse-splay and distributary channels) and attempts to predict the connectivity between such sand bodies in two interseam packages of the Upper Permian Rangal Coal Measures of northeastern Australia. Channel-body percent as measured in well logs was 2% in the upper (Aries-Castor) interseam and 17% in the lower (Castor-Pollux) interseam. Well spacing were too great to allow accurate correlation of channel bodies. The Ob River, Siberia, was used as a modern analog to supply planform geometric measurements of splay and distributary channels so that stochastic modeling of channel bodies was possible. The resulting models demonstrated that (1) channel-body connectivity is more uniform between minor distributary channels than between crevasse-splay channels; (2) relatively good connectivity is seen in proximal positions in splays but decreases distally from the source as channel elements diverge; and (3) connectivity tends to be greater down the axis of splays, with more isolated channel bodies occurring at the margins.
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Energy Policy Blog

Not oil, not shale, but a huge resource! Industry interest in developing oil shale production technology rises and falls with oil prices and the availability of cheaper options. Shale oil in formations like the Bakken is currently more economically attractive and less risky. Chevron, Shell and Exxon-Mobil have ended their oil shale projects in the past year, but Red Leaf Resources is moving ahead.

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Learn to critically evaluate current issues that can impact growth and sustainability of oil and gas ventures.

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You may sign up for these 5 courses as a package at any time, and the courses will begin the first day of the upcoming month.

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20 August 2009

This e-symposium covers advances in geothermal energy, integration with petroleum operations, and lessons learned in recent cases.

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11 February 2010

Gas hydrates, ice-like substances composed of water and gas molecules (methane, ethane, propane, etc.), occur in permafrost areas and in deep water marine environments.

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Biomass Energy Basics is an online course that enables participants to review, analyze, and evaluate opportunities in the rapidly expanding market for biopower and biofuel.

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Renewable & Non-Renewable Resources is an online course that enables participants to review, analyze, and evaluate opportunities in the rapidly expanding market for renewable energy.

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Solar Energy Basics is an online course that enables participants to review, analyze, and evaluate opportunities in the rapidly expanding market for solar energy.

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Wind Energy Basics is an online course that enables participants to review, analyze, and evaluate opportunities in the rapidly expanding market for wind energy.

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Geothermal Energy Basics is an online course that enables participants to review, analyze, and evaluate opportunities in the rapidly expanding market for geothermal energy.

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The presenters will discuss effective management of wind farm operations and the challenges often encountered. 

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