... ABSTRACT The brittle to ductile transition phenomenon in deep shale gas formations is a challenge for hydraulic fracturing and is of interest from both a geological and an engineering perspective. A series of uniaxial and triaxial compressive experiments at increasing confining pressures...

... ABSTRACT Wellbore instability is a complex problem in water-sensitive shale formation and increases the cost of drilling. The hydration expansion effect changes the mechanical and strength properties of shale and causes the stresses to redistribute around a borehole drilling through the water...

... ABSTRACT In this paper, we present a stochastic mean-field homogenization model for upscaling the elastic properties of shale from grain-scale to core-scale. The model encompasses several levels, from the solid clay particles to a porous organic-clay matrix to the hard silt-sized inclusions...

... ABSTRACT The freezing of liquid nitrogen (LN 2 ) can affect the rock's structure, which can be used in the extraction of natural gas from deep shale formations. However, its effect on the pore structure of the shale remains unclear. To address this issue, this study subjected three different...

... clastic rock mineral upstream oil & gas complex reservoir shale gas geologist asia government rock type sedimentary rock geology mudrock scco 2 interaction mechanical property mudstone reaction shale oil supercritical co 2 continental shale oil shale continental shale...

... produced water discharge upstream oil & gas structural geology mineral shale gas oil shale mudstone sedimentary rock clastic rock complex reservoir rock type reservoir geomechanics geologist united states government climate change waste management di water unconventional...

... system machine learning geology fuzzy logic metals & mining fis grouted rockbolt support type organic-rich rock asia government artificial intelligence intersection international journal mining science coal mining rock type shale lithology fog size excavation intersection adoko...

... sedimentary rock upstream oil & gas geologist complex reservoir hydraulic fracturing clastic rock mudrock asia government structural geology subsurface storage rock type china government chemical flooding methods shale fracture zhou fracture mode supercritical co 2...

... ABSTRACT The effective stress coefficient is important to describe the stress and deformation of rock. However, when shale is in the plastic stage, the mathematical expression of the effective stress coefficient is still unclear. Based on Prandtl-Reuss model, the incremental constitutive...

... dissipative viscoelastic strain rate evolution law is governed by the applied stress variable and the amount of adsorbed gas in the matrix pores. The model is exemplified through the simulation of gas production from a sorptive shale formation. The numerical results show that poro-viscoelasticity becomes...

... ABSTRACT This paper proposes end-to-end physics-informed image processing to construct the digital twin of laminated shale cores/specimens and extract the number, spacing, length, and frequency of bedding planes. Specifically, the image stitching technique was applied to eliminate any...

... ABSTRACT Large-scale folding of sedimentary rock is generally considered to be a response to horizontal tectonic shortening. We test an alternative hypothesis where we propose that in basins with high sedimentation rates where folds are cored by mechanically weak mobile shale, fold growth can...

... toughness lecampion shale horizontal direction fracture propagation regime geophysical research bedding plane injection rate engineering international journal detournay toughness heterogeneity ARMA 23-742 Elongated hydraulic fracture emerging from layers of alternating fracture toughness...

... ABSTRACT Shale-like formations can serve as barriers for geologic disposal of high-level nuclear waste. Adopting these tight materials has an advantage that any radionuclides emitted from the canisters would stay with hardly mobile pore water within the rock. However, there are a few issues...

... rock type reservoir characterization sedimentary rock geology china government geological subdiscipline geologist asia government tight sandstone nanoindentation young modulus value mechanical characteristic mechanical property experimental investigation shale afm zhang micro...

... ABSTRACT In China, jurassic continental shale oil resources are rich in Sichuan Basin. Jurassic continental shale oil resources has high clay mineral content, multiple limestone interbeds and variable longitudinal stress, which is barely considered in existing evaluation method. A synthetical...

... geologist solid waste management sedimentary rock upstream oil & gas mudrock anisotropy reservoir characterization structural geology united states government bedding plane mudstone creep anisotropy reservoir geomechanics creep clastic rock rock type shale geological...

... was presented. ABSTRACT: In this study, laboratory experiments were conducted on partially saturated Mancos shale to investigate the elastic response of the sample under a simultaneous increase by the same magnitude in confining stress and pore pressure in the gas phase. Surprisingly, we observed an extensional...

... ABSTRACT The wellbore instability is a vital problem when drilling in the ultra-deep carboniferous shale formation in the southwest block of Tarim Oilfield. And, bits are frequently blocked and stuck. Unfortunately, the problems are hardly to be effectively solved by increasing the drilling...

...ARMA 22 709 Fracture Conductivity of Shale Considering Sample Soaked in Slick Water Xiaobing Bian1,2, Haitao Wang1,2, Tingxue Jiang1,2, Kuiwei Li1,2, Jun Zhou1,2, Jiawei Kao1,2, Qiuping Qin1,2, Lei Wang3 1. State Key Laboratory of Shale Oil and Gas Enrichment and Mechanisms and Effective...