With the continuous construction of large-scale geotechnical engineering, more and attention has been paid to long-term stability rock mass especially problem creep under influence water. Combined with author’s previous research on triaxial characteristics sandstone water-rock interaction, a nonlinear constitutive model was established capture degradation behavior due cyclic wetting drying rese...

The low salinity waterflooding can increase oil recovery by 5%-20% in sandstones, which has attracted more and attention. However, the mechanism of is not clear. In this paper, effect cation replacement on interaction between silica investigated via molecular dynamics simulation to reveal waterflooding. results show that stable adsorption droplets surface mainly due strong rock caused cations. ...

A GPR survey was carried out in advance of archaeological excavations at Madjedbebe (formerly known as Malakunanja II), a sandstone rock shelter in western Arnhem Land (Australia) containing numerous Aboriginal burials. GPR revealed subsurface patterning of rocks in the shelter deposits and archaeological excavation demonstrated that these were related to burials. Post-excavation, GIS and stati...

Hydraulic fracturing is an important method of reservoir stimulation in the exploitation of geothermal resources, and conventional and unconventional oil and gas resources. In this article, hydraulic fracturing experiments with shale, sandstone cores (from southern Sichuan Basin), and granite cores (from Inner Mongolia) were conducted to investigate the different hydraulic fracture extension pa...

Pore-Cor can be used to obtain enhanced information from the mercury intrusion porosimetry of oil-reservoir sandstone core plugs. Although the geometry of the PoreCor network is simplistic, it is nevertheless flexible enough to closely simulate the percolations properties of actual sandstone samples. Also, crucially, it makes an allowance for the shielding of large pores by small throats, which...

productivity of an oil well is an important parameter in any oil field development. low production rate of the wells, impose more production wells drilling which directly jeopardizes the economical feasibility of the project. oil production rate in some of the wells is very low due to low permeability of the reservoir rock. several practice like hydraulic fracturing and acid fracturing is very ...

Carbonate reservoirs rock typing plays a pivotal role in the construction of reservoir static models and volumetric calculations. The procedure for rock type determination starts with the determination of depositional and diagenetic rock types through petrographic studies of the thin sections prepared from core plugs and cuttings. In the second step of rock typing study, electrofacies are deter...

Abstract. Shallow-level igneous intrusions are a common feature of many sedimentary basins, and there is increased recognition the syn-emplacement deformation structures in host rock that help to accommodate this magma addition. However, sub-seismic structure reservoir-scale implications remain poorly understood. The Trachyte Mesa intrusion small (?1.5 km2), NE–SW trending satellite Oligocene-a...

The objective of this study was to establish a rock physics model of North Sea Paleogene greensand. The Hertz-Mindlin contact model is widely used to calculate elastic velocities of sandstone as well as to calculate the initial sand-pack modulus of the soft-sand, stiff-sand, and intermediate-stiff-sand models. When mixed minerals in rock are quite different, e.g., mixtures of quartz and glaucon...