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Bulletin Article

5776
 

The origin of thermogenic natural gas in the shallow stratigraphy of northeastern Pennsylvania is associated, in part, with interbedded coal identified in numerous outcrops of the Upper Devonian Catskill and Lock Haven Formations. Historically documented and newly identified locations of Upper Devonian coal stringers are shown to be widespread, both laterally across the region and vertically throughout the stratigraphic section of the Catskill and Lock Haven Formations. Coal samples exhibited considerable gas source potential with total organic carbon as high as 44.40% by weight, with a mean of 13.66% for 23 sample locations analyzed. Upper Devonian coal is thermogenically mature; calculated vitrinite reflectances range from 1.25% to 2.89%, with most samples falling within the dry-gas window. Source potential is further supported by gas shows observed while drilling through shallow, identifiable coal horizons, which are at times located within fresh groundwater aquifers. Thermogenic gas detected in area water wells during predrill baseline sampling is determined not only to be naturally occurring, but also common in the region.

DL Abstract

3102
 

Challenges for global gas shale production include infrastructural and geological with the Marcellus providing an analogue for both. (Infrastructural) The production from the Marcellus gas shale presents unique challenges that include issues associated with leasing, geology, landowners, virtually no deep disposal wells, state governments without a severance tax, several river basin commissions, an infrastructure designed for shallow gas production, an emotional group of environmentalists, and one state that has yet to permit horizontal well stimulation.

3082
 

Using examples from shale reservoirs worldwide, I demonstrate the diversity of shale-hosted fracture systems and present evidence for how and why various fractures systems form. Core and outcrop observations, strength tests on shale and on fractures in core, and geomechanical models allow prediction of fracture patterns and attributes that can be taken into account in well placement and hydraulic fracture treatment design. Both open and sealed fractures can interact with and modify hydraulic fracture size and shape. Open fractures can enhance reservoir permeability but may conduct treatment fluids great distances, in some instances possibly aseismically.

Explorer Article

8490
 

If you want to know about the Eagle Ford play in Texas, AAPG member Art Donovan is a man you want to be talking to.

8486
 

Robert G. Loucks, a senior research scientist at the Bureau of Economic Geology, University of Texas at Austin, is one of this year’s Robert R. Berg Outstanding Research Award winners. 

8473
 

Shale formations can confound even the savviest geoscientist when it comes to determining the inner workings of the rock. After expert evaluation, even the most attractive prospecting deal can be a tough sell. And there’s almost always a new piece to each of these puzzles that requires some sophisticated high-tech explaining.

8045
 

Oklahoma! As-yet unlocked SCOOP and STACK plays have plen’y of room for maturation and development.

Explorer Division Column EMD

3800
 

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.

Explorer Emphasis

3169
 

New geosteering tools are helping to drive eye-raising crude oil production levels in the Bakken shale play.

Explorer Policy Watch

3186
 

The recent National Academies’ Institute of Medicine (IOM) report on its late-April 2012 workshop, “Health Impact Assessment of Shale Gas Extraction,” describes many potential health impacts of shale gas development and identifies the data gaps.

Short Course

Golden Colorado United States 28 July, 2014 01 August, 2014 1507
 
Golden, Colorado, United States
28 July - 1 August 2014

This course assumes no logging knowledge and seeks to establish an understanding of basic petrophysical measurements and interpretation techniques which can be applied to routine tasks, and upon which more complex and advanced information and interpretive techniques can be built. It strives to provide a strong and coherent foundation for the understanding of other, specialized interpretation techniques involving well log data.


Austin Texas United States 28 April, 2014 02 May, 2014 1512
 
Austin, Texas, United States
28 April - 2 May 2014

This course assumes no logging knowledge and seeks to establish an understanding of basic petrophysical measurements and interpretation techniques which can be applied to routine tasks, and upon which more complex and advanced information and interpretive techniques can be built. It strives to provide a strong and coherent foundation for the understanding of other, specialized interpretation techniques involving well log data.

Workshop

Dubai United Arab Emirates 21 September, 2014 24 September, 2014 8548
 
Dubai, United Arab Emirates
21-24 September 2014

Leveraging from global analogues, the workshop aims to apply lessons worldwide to the Middle East Shale Gas setting. Additionally, the workshop will explore several distinct features in the region. We anticipate rich discussions to further understand these new potential reservoirs. 

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