The present study was carried out to determine the possible origins of sediments entering Taleghan Dam in northern part of Iran, in order to avoid further sedimentation and helping in extension of the useful life of the proposed dam. This was performed by XRD analysis. To do so, first of all, sediment sampling points were positioned along the Taleghan River. The collected samples, after coding,...

The lithology and lithofacies assemblage of shale are highly complex heterogeneous in the continental formations due to rapid changes sedimentary environment source material, complicating evaluation oil enrichment areas, such as member 3 Shahejie Formation Qikou sag, Bohaibay Basin, China. We used core observations descriptions well F39 × 1 performed X-ray diffraction, scanning electron microsc...

In this paper, taking the shale of Chang 7-Chang 9 oil formation in Yanchang Formation southeastern Ordos Basin as an example, through study heterogeneity characteristics, starting from preprocessing supervision data set, a logging interpretation method total organic carbon content (TOC) on lithofacies-based Categorical regression model (LBCRM) is proposed. It show that: 1) Based core observati...

Fine-grained strata deposited on the Eastern Siberian craton are predominantly considered to mainly consist of Neoproterozoic sandstones. Clastic rocks near unconformity border Ediacaran and Riphean represented by sandstone siltstone layers with thicknesses several tens meters, belonging Nepa, Tira, Byuk horizons in Nepa–Botuoba region. These sandstones have features characteristic aeolianites ...

The oil expulsion efficiency and retention of shale affect the enrichment preservation oil. Two series semi-closed hydrous pyrolysis experiments were performed under in situ geological conditions on a Paleogene sample as comparable analog to evaluate generation potential Funing Formation Subei Basin. results show that 1) oil-generation capacity evolution different lithological combination sourc...

A rich record of specimens with slightly sclerotised skeletal parts or even soft−bodied fossils have been established from several well−known lower and middle Cambrian Lagerstätte, e.g., Bur− gess Shale of the Stephen Formation, Kinzers, Marjum, and Wheeler formations in North America; Buen Formation in North Greenland; Doushantuo, Chengjiang, and Kaili in China; Emu Bay Shale in Australia and ...

Deep-water massive (featureless) sands are commonly interpreted as indicators of flow conditions during or shortly after deposition and are almost never interpreted to reflect post-depositional homogenization due to bioturbation. Deep-water deposits of the lower Rio Dell Formation (Pliocene), Eel River basin (NW California), however, reveal previously unrecognized cryptically bioturbated fabric...

Abstract The present work aims to investigate the reservoir characterizations of Lower Cenomanian Baharyia Formation by creating isoparametic maps calculate petrophysical parameters and detect favorable parts for oil accumulations using available well logging data. is one main hydrocarbon sandstone reservoirs in northern Western Desert Egypt. About 90% field produces form Formation. This has be...

In order to clarify the characteristics of fine-grained sedimentary lithofacies and depositional models in lacustrine environments Chang 7 Member Upper Triassic Yanchang Formation Ordos Basin, we focus on classification controlling factors. Based typical field sections southern combined with methods organic geochemical analysis, polarizing microscopic observation, XRD elemental geochemistry, su...