48 research outputs found
Source rock/dispersed organic matter characterization-TSOP research subcommitee results
Because sedimentary organic matter consists of a diverse mixture of organic components with
different properties, a combination of chemical and petrographic results offers the most complete
assessment of source rock properties. The primary purpose of this Society for Organic Petrology (TSOP)
subcommittee is to contribute to the standardization of kerogen characterization methods. Specific
objectives include: (1) evaluation of the applications of different organic matter (petrographic) classifications
and terminology, and (2) integration of petrographic and geochemical results. These objectives
were met by completing questionnaires, and petrographic, geochemical and photomicrograph round-robin
exercises. Samples that were selected for this study represent different petrographic and geochemical
properties, and geologic settings to help identify issues related to the utilization of different classifications
and techniques. Petrographic analysis of the organic matter was completed using both a prescribed
classification and the individual classification normally used by each participant. Total organic carbon
(TOC), Rock-Eval pyrolysis and elemental analysis were also completed for each sample. Significant
differences exist in the petrographic results from both the prescribed and individual classifications.
Although there is general agreement about the oil- vs gas-prone nature of the samples, comparison of
results from individual classifications is difficult due to the variety of nomenclature and methods used to
describe an organic matter assemblage. Results from the photomicrograph exercise document that
different terminology is being used to describe the same component. Although variation in TOC and
Rock-Eval data exists, geochemical results define kerogen type and generative potential. Recommendations
from this study include:
(1) A uniform organic matter classification must be employed, which eliminates complex terminology
and is capable of direct correlation with geochemical parameters.
(2) A standardized definition and nomenclature must be used for the unstructured (amorphous)
organic matter category. Subdivisions of this generalized amorphous category are needed to
define its chemical and environmental properties.
(3) Standardized techniques including multimode illumination, types of sample preparations and
data reporting will help eliminate variability in the type and amount of organic components
reported
Source rock/dispersed organic matter characterization-TSOP research subcommitee results
Because sedimentary organic matter consists of a diverse mixture of organic components with
different properties, a combination of chemical and petrographic results offers the most complete
assessment of source rock properties. The primary purpose of this Society for Organic Petrology (TSOP)
subcommittee is to contribute to the standardization of kerogen characterization methods. Specific
objectives include: (1) evaluation of the applications of different organic matter (petrographic) classifications
and terminology, and (2) integration of petrographic and geochemical results. These objectives
were met by completing questionnaires, and petrographic, geochemical and photomicrograph round-robin
exercises. Samples that were selected for this study represent different petrographic and geochemical
properties, and geologic settings to help identify issues related to the utilization of different classifications
and techniques. Petrographic analysis of the organic matter was completed using both a prescribed
classification and the individual classification normally used by each participant. Total organic carbon
(TOC), Rock-Eval pyrolysis and elemental analysis were also completed for each sample. Significant
differences exist in the petrographic results from both the prescribed and individual classifications.
Although there is general agreement about the oil- vs gas-prone nature of the samples, comparison of
results from individual classifications is difficult due to the variety of nomenclature and methods used to
describe an organic matter assemblage. Results from the photomicrograph exercise document that
different terminology is being used to describe the same component. Although variation in TOC and
Rock-Eval data exists, geochemical results define kerogen type and generative potential. Recommendations
from this study include:
(1) A uniform organic matter classification must be employed, which eliminates complex terminology
and is capable of direct correlation with geochemical parameters.
(2) A standardized definition and nomenclature must be used for the unstructured (amorphous)
organic matter category. Subdivisions of this generalized amorphous category are needed to
define its chemical and environmental properties.
(3) Standardized techniques including multimode illumination, types of sample preparations and
data reporting will help eliminate variability in the type and amount of organic components
reported
Economic impact analysis of natural gas development and the policy implications
In the US, the shale gas revolution ensured that the development costs of unconventional natural gas plummeted to the levels of 13/Mcf, which is well over the existing market price
Invisible Author/Visible Predator
(Statement of Responsibility) by Jessica Cardott(Thesis) Thesis (B.A.) -- New College of Florida, 2008(Electronic Access) RESTRICTED TO NCF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE(Bibliography) Includes bibliographical references.(Source of Description) This bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.(Local) Faculty Sponsor: Reid, Am
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Evaluation of geologic controls on geothermal anomalies in the Arkoma Basin, Oklahoma
Vitrinite-reflectance techniques were used to determine if there is a relationship between present geothermal gradient and coal rank in the Arkoma Basin. Three coal seams from high geothermal-gradient areas were compared with the same coal seams, respectively, from low geothermal-gradient areas. Samples were obtained from three core holes that were drilled in the high geothermal-gradient areas in Pittsburg and Haskell Counties, and three core holes that were drilled in the low geothermal-gradient areas in Latimer and Muskogee Counties. Nine additional coal samples were collected from active coal mines and one from an outcrop to supplement the core samples. The vitrinite-reflectance data indicates the present geothermal gradient did not produce the coal rank in the Arkoma Basin of Oklahoma. The coal rank is believed to have developed during the late Paleozoic, possibly in connection with the Ouachita orogeny. The coal isocarb maps suggest that the present geothermal-gradient pattern reflects the paleogeothermal gradient that produced the coal rank. Perhaps the intense folding and faulting associated with the Ouachita orogeny combined to transmit heat from the basement along an east-west thermal-anomaly zone through Haskell and Pittsburg Counties, Oklahoma. 60 refs., 16 figs., 3 tabs
Classification of liptinite – ICCP System 1994
The liptinite maceral group has been revised by ICCP in accordance with the ICCP System 1994. After the revision of the classifications of vitrinite (ICCP, 1998), inertinite, (ICCP, 2001) and huminite (Sykorova et al., 2005) this liptinite classification completes the revised ICCP maceral group classifications. These classifications are collectively referred to as the “ICCP System 1994”. In contrast to the previous ICCP Stopes Heerlen (ICCP, 1963, 1971, 1975, 1993) this new classification system is applicable to coal of all ranks and dispersed organic matter. The classification as presented here was accepted in the ICCP Plenary Session on September 11, 2015 at the ICCP Meeting in Potsdam. The decision to publish this classification in the recent form was accepted at the ICCP Plenary Session on September 23, 2016 in Houston