The overmature Precambrian to Lower Paleozoic marine shales from China contain relatively simple organic matter (OM) composition, which is dominated by in-source solid bitumen (i.e., in the hydrocarbon source rocks). thermal evolution behavior of original OM and determination maturity Cambrian have been challenging for decades. vitrinite-like maceral (VLM) widely present these shales, its origi...

This work investigates bituminite (amorphous sedimentary organic matter) in Upper Jurassic Kimmeridge Clay source rock via confocal laser scanning microscopy (CLSM) and atomic force (AFM). These petrographic tools were used to provide better understanding of the nature bituminite, which has been historically difficult identify differentiate from similar matter types rocks. As part an Internatio...

Optical microscopy is a very unique tool to find out about the structural order of carbonaceous materials and coal by-products. It has two main utilization ways as an instrument to distinguish and quantify different phases in a polished surface and as a record of the reflectance of a given material. Using one or both capabilities there are significant contributions to different aspects of coal ...

The Bathonian Ore-Bearing Clay Formation, outcropping in the Gnaszyn open-pit mine at Częstochowa (Poland), includes several horizons of abundant iron carbonate concretions . cores concretionary bodies commonly contain organic matter (OM), dominated by fragments wood. These particles usually display well-preserved primary structures and occur rarely as more deformed and/or completely degraded f...

The Maikop Group and the Diatom Formation constitute two main source rocks in South Caspian Basin onshore Azerbaijan where large-scale oil production began more than 150 years ago. However, stratigraphic distribution of vertical variation source-rock parameters are still poorly understood. aim present paper is therefore to investigate high resolution Perekishkyul Islamdag outcrop sections, loca...

Unconventional oil and gas, represented by shale gas oil, have occupied an important position in global energy. The rapid growth of production shows great potential for the exploration development resources. Junggar basin, main oil-bearing basin China, is rich resources, so it practical significance to carry out systematic research on geological characteristics reservoirs this region. To end, p...

A detailed organic geochemical study; utilising petrography, biomarker hydrocarbon analysis and high temperature GC analysis of extractable wax hydrocarbon constituents was performed on four marginally oil window-mature source rocks from the Shahejie Formation (Eocene), Damintun depression in eastern China. The main maceral components in the source rocks were vitrinite, liptinite and exinite, w...

Sulphur in coil1 is il major environmental concern. The use of coal for combustion requires the control of sulphur dioxide emissions. To reduce these emissions, the total solphur content in c~ial product ~must he decreased. This can he accomplished by using low-sulphur coal. cleaning coal prior to combustion. retaining sulphw during wmhustion. or hy treatment of tlur gases after combustion. The...