The Mesozoic Chang 8 Section in the Zhenjing area is a typical low permeability-tight sand reservoir and regarded as most important set of paybeds study area. Guided by principles basic geological theory, diagenetic evolution process hydrocarbon accumulation periods were determined through various techniques. More specifically, core observation, scanning electron microscopy (SEM), X-ray diffrac...

This paper focuses on determining total organic carbon (TOC) from boreholes in the Kalahari Basin, Botswana, using Passey's method. The Karoo basin is one of several basins southern Africa filled with Late Carboniferous to Jurassic sedimentary strata that host Permian age coal seams. Nine exploration (wells) drilled central are used determine Total Organic Carbon potential. Vitrinite reflectanc...

This study performs a comprehensive comparison of three key marine shale reservoirs in the southeastern margin of the Sichuan Basin, and explains why commercial gas production was only achieved in the Lower Silurian Longmaxi (LSL) and Upper Ordovician Wufeng (UOW) formations, but not in the Lower Cambrian Niutitang (LCN) formation. The experimental methods included in situ gas content and gas c...

Foreland basin development in the Andes of central Colombia has been suggested to have started in the Late Cretaceous through tectonic loading of the Central Cordillera. Eastward migration of the Cenozoic orogenic front has also been inferred from the foreland basin record west of the Eastern Cordillera. However, farther east, limited data provided by foreland basin strata and the adjacent East...

Hydrocarbon potential evaluation is a high priority in oil/gas exploration which significantly influenced by methods and subjective cognition. With the aim of quantitatively establishing hydrocarbon generation expulsion (HGE) model source rocks, data-driven approach proposed based on abundant readily available Rock-Eval/total organic carbon content (TOC)/vitrinite reflectance (VRo) datasets. Th...

relative diffuse reflection measurements from the original and ground surfaces using a he-ne laser are reported. the intensity measurements for the metallic, transparent dielectric, matte plastic surfaces and colored papers are presented. our results indicate that among metallic surfaces tested, aluminum has the highest diffuse reflectance; while the original stainless steel surface shows the l...

Identification of fossil material under a microscope is the basis of micropalentology. Our task is to locate and count the pieces of inertinite and vitrinite in images of sieve sampled rock. The classical watershed algorithm oversegments the objects because of their irregular shapes. In this paper we propose a method for locating multiple objects in a black and white image while accounting for ...

The ever-increasing demand for oil and gas has driven its exploration in rather extreme conditions. In Lamu offshore, which is hitherto underexplored, most of the wells already drilled turned out dry save a few with hydrocarbon shows despite promising reservoir properties related geological structures. This, therefore, necessitated source rock evaluation study area to ascertain presence potenti...

The influence of coalification on coal structure evolution in middle ranked coals is significant for physical assessment coalbed methane (CBM) reservoirs, which provides insights the intrinsic connection between jump and pore heterogeneity. A total 26 middle-ranked were samples covering Liupanshui Coalfield Guizhou Province, Anhe Henan Huaibei Anhui Sanjiang Basin Heilongjiang Ordos Shaanxi Pro...