One of the most distinguished sandstone geoheritage resources in Khorat Plateau is Hin Chang Si located Nam Phong National Park, Khon Kaen Province. The clastic sedimentary rocks Phra Wihan Formation Group covered this area. As a result lithologic study, consists pebbly sandstone, moderately sorted medium- to coarse-grained and small amount siltstone interbedded with laminated shale. characteri...

The paper developed a technique for solving mixed nonaxisymmetric problems of the theory elasticity bounded bodies revolution made transversely isotropic material under action surface forces specified according to cyclic law. involves development energy method boundary states, which is based on concepts spaces internal and conjugated by isomorphism, makes it possible establish one-to-one corres...

The weakly cemented sandstone is widely distributed in the Western Mining Area, which mainly formed by mineral grains and minerals through compaction cementation. To study influence of grain size on mechanical properties acoustic emission (AE) characteristics sandstone, uniaxial compression Brazilian splitting AE tests were carried out four specimens with different sizes. physical properties, b...

Abstract Proppant crushing and embedment in hydraulically-induced fractures is a major drawback to the recovery of unconventional oil/gas geothermal energy production. This study provides grain-scale analysis fracture evolution mechanisms proppant crushing, rock damage during embedment, influence realistic reservoir/fracture fluid on behaviour packs subjected in-situ stresses using discrete ele...

Abstract High-quality hydrocarbon source rocks are present in the upper Cretaceous layer western slope of Songliao Basin. Oil and gas have accumulated these at shallow edge basin, which has led to formation oil sand resources. This study uses back-propagation (BP) neural network method predict distribution reservoirs is first its kind China. First, based on basic data collected by core sample, ...

The optimization of reservoir sweet spots is the key to efficient exploration and development low-permeability tight sandstone gas reservoirs. However, offshore deep, has characteristics large burial depth, diagenesis heterogeneity prominent importance diagenetic facies, which make it difficult predict spots. This work comprehensively used logging data, core observation, conventional analysis, ...

ABSTRACT Upper Devonian and Lower–Middle Mississippian strata of the North American midcontinent are ubiquitously fine-grained silt-rich, comprising both so-called shale as well argillaceous limestone (or calcareous siltstone) that accumulated in Laurentian epeiric sea. Although long recognized recording marine deposition, origin transport siliciclastic material these units remains enigmatic be...

Organic matter (OM) and carbonate are the important organic inorganic components, respectively, in shales of upper fourth member Eocene Shahejie Formation, Dongying Depression, Eastern China. Their enrichment affects hydrocarbon generation capacity reservoir development shales. The mechanism sequence stratigraphy influence on OM deposition investigated this study. Based petrological, mineralogi...

Remains of non-marine bivalves are widespread in the Carboniferous Donets Basin (Eastern Ukraine). The studies this group fauna important for stratigraphy, paleoecology and paleobiogeography. remains were found sediments Mospyne Formation; Carbonicola obtusa (Hind) Naiadites sp. roof shale g2 coal bed; Curvirimula trapeziforma (Dewar) C. tesselata (Jones) identified g12 bed, rectilinearis Truem...

Detailed log facies studies of Miocene succession in the well Rashidpur-04, Rashidpur structure, Surma Basin were carried out by integrating wireline log and limited core sample data in order to reconstruct the paleoenvironments of deposition. Based on the analysis of the log motifs, grain size, sand/shale ratio and major change in gamma ray log motifs, two major depositional sequences were ide...