The southern part of Jin45 fault block is a low permeability layered reservoir with thin oil layer thickness. And the development horizontal well pattern has good economic benefit in block. distribution quite different. main stable, but non-main unstable. In this study, through engineering method and numerical simulation method, direction, form, spacing length are optimized to determine layer. ...

Micro cracks occurring in concrete around tensile rebar is well known latent damage phenomenon. These micro cracks develop, and can be detected after reaching the surface of the concrete. Detection of these cracks before they are fully formed is preferable, but observing the whole crack structure is difficult. Another problem is repairing micro cracks under the concrete surface. The autogenous ...

Distance-based techniques have recently emerged in the context of ensemble modeling, in particular for history matching, model selection and uncertainty quantification. Starting with an initial ensemble of model realizations, a distance between any two realizations is defined. The purpose of this distance is to introduce the purpose of modeling into the process of geological modeling, thereby p...

Abstract The positive impact that natural fractures can have on geothermal heat production from low-permeability reservoirs has become increasingly recognised and proven by subsurface case studies. In this study, we assess the potential of extraction tight Lower Buntsandstein Subgroup targeted recently drilled NLW-GT-01 well (West Netherlands Basin (WNB)). We integrate: (1) reservoir property c...

Distance-based stochastic techniques have recently emerged in the context of ensemble modeling, in particular for history matching, model selection and uncertainty quantification. Starting with an initial ensemble of realizations, a distance between any two models is defined. This distance is defined such that the objective of the study is incorporated into the geological modeling process, ther...

Fine-scale discrete fracture simulations provide a natural means to quantify the matrix-fracture fluxes and specify reference solutions for upscaling approaches such as dual porosity/dual permeability models. Since typically fine-scale are computationally demanding, fractured reservoirs highly heterogeneous, it is desirable parametrize geometry obtain coarse-scale model closures using precomput...

klinkenberg permeability is an important parameter in tight gas reservoirs. there are conventional methods for determining it, but these methods depend on core permeability. cores are few in number, but well logs are usually accessible for all wells and provide continuous information. in this regard, regression methods have been used to achieve reliable relations between log readings and klinke...

the permeability is a main property of oil reservoirs that shows the ability of rocks in the conduct of fluids such as oil, water and gas through the pore spaces of reservoir. the determination of the permeability is a crucial task in reserve estimation, production and development of oil reservoirs. due to this, an accurate estimate of such important reservoir rock parameter should not be made ...

in this study, medium density fiberboard (mdf), was produced by dry process using refined fibers from choob khazare caspian amol factory, with 3 levels of urea formaldehyde adhesive at 8, 10, and 12 percent, and 3 levels of paraffin at 0.5, 1, and 1.5 percent. from every treatment, cylindrical samples for permeability measurement with 13 mm in diameter, and 30 mm of height were cut using hole-s...