Application of Differential Scanning Calorimetry to Study Solvent Swelling of Kukersite Oil Shale Macromolecular Organic Matter: A Comparison with the Fine-Grained Sample Volumetric Swelling Method

2014 ◽  
Vol 28 (2) ◽  
pp. 840-847 ◽  
Author(s):  
Jelena Hruljova ◽  
Oliver Järvik ◽  
Vahur Oja
Keyword(s):  
Differential Scanning Calorimetry ◽  
Organic Matter ◽  
Oil Shale ◽  
Scanning Calorimetry ◽  
Fine Grained ◽  
Solvent Swelling

ORGANIC MATTER IN OIL SHALES

1980 ◽  
Vol 20 (1) ◽  
pp. 44 ◽  
Author(s):  
A.C. Hutton ◽  
A.J. Kantsler ◽  
A.C. Cook ◽  
D.M. McKirdy
Keyword(s):  
Organic Matter ◽  
Oil Shale ◽  
Large Scale ◽  
Mineral Matter ◽  
Green River ◽  
Fine Grained ◽  
Recovery Cost ◽  
Oil Shales

The Tertiary oil-shale deposits at Rundle in Queensland and of the Green River Formation in the western USA, together with Mesozoic deposits such as those at Julia Creek in Queensland, offer prospects of competitive recovery cost through the use of large-scale mining methods or the use of in situ processing.A framework for the classification of oil shales is proposed, based on the origin and properties of the organic matter. The organic matter in most Palaeozoic oil shales is dominantly large, discretely occurring algal bodies, referred to as alginite A. However, Tertiary oil shales of northeastern Australia are chiefly composed of numerous very thin laminae of organic matter cryptically-interbedded with mineral matter. Because the present maceral nomenclature does not adequately encompass the morphological and optical properties of most organic matter in oil shales, it is proposed to use the term alginite B for finely lamellar alginite, and the term lamosites (laminated oil shales) for oil shales which contain alginite B as their dominant organic constituent. In the Julia Creek oil shale the organic matter is very fine-grained and contains some alginite B but has a higher content of alginite A and accordingly is assigned to a suite of oil shales of mixed origin.Petrological and chemical techniques are both useful in identifying the nature and diversity of organic matter in oil shales and in assessing the environments in which they were formed. Such an understanding is necessary to develop exploration concepts for oil shales.

scholarly journals SOLVENT SWELLING OF KUKERSITE OIL SHALE MACROMOLECULAR ORGANIC MATTER IN BINARY MIXTURES: IMPACT OF SPECIFICALLY INTERACTING SOLVENTS

Oil Shale ◽  
2014 ◽  
Vol 31 (4) ◽  
pp. 365 ◽  
Author(s):  
J HRULJOVA ◽  
N SAVEST ◽  
A YANCHILIN ◽  
V OJA ◽  
E M SUUBERG
Keyword(s):  
Organic Matter ◽  
Binary Mixtures ◽  
Oil Shale ◽  
Solvent Swelling

Prediction of nutritive value of hay from differential scanning calorimetry measurements on forage and feces

1998 ◽  
Vol 78 (3) ◽  
pp. 449-451
Author(s):  
G. W. Mathison ◽  
G. Sedgwick ◽  
T. F. Fenton ◽  
J. Walshaw
Keyword(s):  
Differential Scanning Calorimetry ◽  
Organic Matter ◽  
Key Words ◽  
Nutritive Value ◽  
Correlation Coefficients ◽  
Response Curves ◽  
Scanning Calorimetry ◽  
Cattle Feces ◽  
Low Correlation ◽  
Organic Matter Digestibility

Differential scanning calorimetry measurements were conducted with six alfalfa and nine grass hays and corresponding cattle feces. Feces and hays gave different responses. Relatively low correlation coefficients between hay minus fecal response curves and cattle intake and organic matter digestibility measurements indicated that such differences were of little practical value in predicting forage nutritive value. Key words: Differential scanning calorimetry, forage, cattle, feces, digestibility, intake

Controls on organic matter distributions in Eocene Lake Uinta, Utah and Colorado

2018 ◽  
Vol 55 (4) ◽  
pp. 177-216 ◽  
Author(s):  
Ronald Johnson ◽  
Justin Birdwell ◽  
Tracey Mercier
Keyword(s):  
Organic Matter ◽  
Oil Shale ◽  
Cyclonic Circulation ◽  
Green River Formation ◽  
Mineral Matter ◽  
Green River ◽  
Fine Grained ◽  
Sediment Gravity Flows ◽  
Gravity Flows ◽  
Douglas Creek Arch

The Green River Formation deposited in Eocene Lake Uinta in the Uinta and Piceance Basins, Utah and Colorado, contains the largest oil shale resource in the world with an estimated 1.53 trillion barrels of oil in place in the Piceance Basin and 1.32 trillion barrels in the Uinta Basin. The Douglas Creek arch, a slowly subsiding hinge-line between the two basins, created separate deep depocenters, one in each basin with shallow water conditions near the crest of the arch. Lake Uinta was a saline lake throughout its history with a lower saline to hypersaline layer (monimolimnion) and an upper less saline layer (mixolimnion). Most of the organic matter in the Green River Formation was derived primarily from algae that lived in the photic zone of the lake and is very hydrogen-rich and oil-prone. In many modern large and deep lakes, rates of organic matter production are highly variable due to differences in nutrient supply. However, cyclonic circulation often leads to winnowing out of organic and mineral matter in the mixolimnion leading to organic matter and fine-grained mineral matter being deposited in increasing amounts toward hydro-dynamically dead zones in the center of the circulation producing concentric bands of increasing organic matter content. Organic matter transport through the dense, hypersaline monimolimnion may have been facilitated by low density organic matter attaching to more dense clay mineral particles. Most of the oil shale intervals deposited in Lake Uinta display similar patterns in their organic matter distributions, increasing in very regular fashion toward the central areas of the lake’s two depocenters. This concentric feature is particularly prominent in the most laminated oil shale zones. Here, we propose that cyclonic circulation was present in Lake Uinta. Each basin appears to have had its own circulation currents, separated by shallow water conditions near the Douglas Creek arch, and one hydrodynamically dead zone in each basin. Sediment gravity flow processes were also very active in some strata of Lake Uinta, leading to the reworking and re-depositing of sediments. Two general types of sediment gravity flows are recognized: (1) organic-rich sediment gravity flows that reworked and may have concentrated organic-rich material closer to the two deep depocenters, and (2) sandstone- and siltstone-rich organic-poor mass movement deposits that originated on marginal shelves. Mass movements could have been triggered by various natural processes and/or possibly by the movement of dense brines that evolved on marginal shelves and moved along the bottom of the water column toward the deep part of the lake. The uppermost, poorly consolidated sediment layer was incorporated in sediment gravity flows as they moved, and in many cases sediment gravity flows scoured down significantly into the more consolidated underlying sediment producing large rip-up clasts of laminated sediments. Truncation of more than 100 ft occurs at the base of a sequence of sediment gravity flows in one well, indicating a significant incised channel. Coarser-grained sediment gravity flows terminated before reaching the lake’s deepest areas, forming thick concentric buildups of organically lean sediment near the base of the marginal slopes. Intervals dominated by organic-rich fine-grained sediment gravity flows have tightly concentric bands of increasing organic matter toward the deepest parts of the lake and can be organically richer than the richest laminated intervals. There is some evidence that the hydrodynamically quiet zones did not always correspond closely to the deepest areas of the lake, extending in some cases into some shallower areas.

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