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Welcome to the new Datapages Archives

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The AAPG/Datapages Combined Publications Database

Showing 3,253 Results. Searched 200,619 documents.

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Vitrinite Reflectance of Coals from the Heath Formation, Central Montana: ABSTRACT

John A. Daniel, Gary A. Cole

AAPG Bulletin

.... Since vitrinite reflectance is a method of determining thermal maturation of organic material in sediments (in this case, a thin coal seam near the base...

1983

Origin of Coal Seam Structures, Sullivan County, Indiana: ABSTRACT

Scot C. Adams, Gunnar Kullerud

AAPG Bulletin

...Origin of Coal Seam Structures, Sullivan County, Indiana: ABSTRACT Scot C. Adams, Gunnar Kullerud 1983 1452 1452 67 9. (September) Structures...

1983

Petrologic and Chemical Characteristics of Deep-Subsurface Wilcox (Eocene) Lignites from East and East-Central Texas: ABSTRACT

C. M. Jones, S. J. Tewalt

AAPG Bulletin

... and trace element concentrations. Most seams are low in sulfur, except for a seam underlying a marine unit at the top of the Wilcox, in which the dry...

1984

Rank of British Coalfields in Relation to Geothermal History and Geologic Structure: ABSTRACT

D. G. Murchison, A. C. Raymond, A. H. V. Smith

AAPG Bulletin

... have been prepared from coalfield seam maps, originally constructed from coal chemical parameters, using what are now acceptable chemical parameter...

1984

Applied Depositional Modeling for Developing Western Coal Deposits: ABSTRACT

J. M. Mercier, R. D. Tifft, III, G. E. Vaninetti

AAPG Bulletin

... with reduced seam thicknesses. The immediate association of marine-deposited strata and coal commonly results in higher sulfur values at the contacts...

1984

Computerized Coal-Quality Prediction from Digital Geophysical Logs: ABSTRACT

D. L. Nations, D. E. Tabet, C. R. Gerould

AAPG Bulletin

... of the coal seam. Standard curve-fitting techniques were then employed to determine which log response parameter most accurately predicted the various...

1984

Petrographic Characterization of Coals in Kozlu and Kilic Formations (Westphalian A), Zonguldak, Turkey: ABSTRACT

Selami Toprak, Maurice Deul

AAPG Bulletin

... as well as virtinertite microlithotypes suggests a lacustrine depositional environment for the coals. Successive coal seams, or even a single coal seam...

1984

Fibrous Calcium Sulfate in Veins: ABSTRACT

Hans-G. Machel

AAPG Bulletin

... of the veins, vertical fibers, a parting separating a lower from an upper seam, incorporated wall-rock fragments), but several observations are new...

1985

Chemical and Petrographic Characterization of Drill Core from Beluga Coalfield: ABSTRACT

P. D. Rao, J. S. Youtcheff, J. E. Smith

AAPG Bulletin

... analyses showed less drastic variations within a seam. The wide variation in ash composition, particularly of iron and silica, among others...

1985

ABSTRACT: Methane of the Donbas: A Future of Ukraine's Energy Sector; #90007 (2002)

Boris Semenovich Panov, O. V. Chayka, O. A. Shevchenko

Search and Discovery.com

... closures of folds, seam bends (flexures), and zones of intense fracturing, etc. are the most promising for methane exploration. The most favorable...

Unknown

ABSTRACT: Petrographic Characterization of Coals of the Semirara Formation in Maniguin Wells, Sibay Basin, Central Philippines: A Preliminary Presentation of Results; #90007 (2002)

Monina Tesalona Forbes

Search and Discovery.com

... deposited in paleowet-forest mires with the exception of the uppermost seam. The average maximum reflectance value (Ro) of the ten samples from...

Unknown

ABSTRACT: Coalbed Methane Resource Potential in Canada; #90013 (2003)

J. D. Hughes

Search and Discovery.com

... surrounding resource estimates. First, coal seam thickness, depth, gas content and structural configuration for in situ volume estimation. Second, critical...

2003

ABSTRACT: Characterization of the Coalbed Methane Potential in the Western Canada Sedimentary Basin: Evidence from the Upper Cretaceous Horseshoe Canyon Formation of South-Central Alberta; #90013 (2003)

Dwayne F. Giggs, S. George Pemberton

Search and Discovery.com

... production potential of the coal seams and the effects of the inter-seam strata on this production. The research strategy uses an integrated approach...

2003

ABSTRACT: Geology and Production Characteristics of Nora CBM Field, Dickenson, Russell, Wise and Buchanan Counties, Virginia; #90019 (2003)

Craig A. Eckert, Michael J. Kovarik

Search and Discovery.com

... recently into multiple stage jobs where thick coals can be staged alone. Presently, mapping of net total seam thickness of the numerous coal seams...

2003

ABSTRACT: Coal-Bed Methane Activity in the Illinois Basin … An Update; #90019 (2003)

Steven A. Tedesco

Search and Discovery.com

... to moderate gas contents that vary across the basin. Completion practices have gone from historically single seam to multiple seams. The coal seams...

2003

ABSTRACT: Unconventional Drilling Methods for Unconventional Reservoirs; #90019 (2003)

Douglas R. Wight

Search and Discovery.com

...-Pinnate well drilled in a coal seam can deplete 1200 acres from a single small wellsite and typically recover 85 to 90 percent of the gas in place...

2003

ABSTRACT: Unconventional Drilling Methods for Unconventional Reservoirs; #90020 (2003)

Doug R. Wight

Search and Discovery.com

... method. A Z-Pinnate well drilled in a coal seam can deplete 1200 acres from a single small wellsite and typically recover 85 to 90 percent of the gas...

2003

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