heterogeneities of such porous media, whose linear sizes are typically on the order of at least a few kilometers, manifest themselves at four widely disparate length scales: • microscopic scale—at the level of pores and grains (typical sizes are up to tens of microns); • mesoscopic scale—at the level of laboratory core plugs (typical length scale on the order of a few centimeters); • macroscopi...

A digital imaging technique is used to characterize pore-scale structures and to predict fluid flow at the scale. Heterogeneity at the pore-scale can be assessed by the micro-Computed Tomography (micro-CT), which provides complicated boundary conditions of porous media, and it can also be identified by the numerical flow simulation using the lattice-Boltzmann method (LBM) on the digital image. ...

core flooding experiments were conducted with the objective of evaluating near miscible surfactant alternating co2 injection and the effect of surfactant concentrations on gas-oil and water displacements in porous media. the core samples were provided from a low permeability mixed wet oil reservoir at 156 °f and 1900 psia. in addition, very few studies of surfactant adsorption on carbonate mine...

In the management of reservoirs it is an important issue to utilize the available data in order to make accurate forecasts. In this paper a novel approach for frequent updating of the near-well reservoir model as new measurements becomes available is presented. The main focus of this approach is to have an updated model usable for forecasting. These forecasts should have initial values that are...

With proven reserves of 9.836 × 1010 m3, the largest known natural gas reservoir among terrigenous basement rocks has been discovered within granitoids northern Qaidam Basin. Due to their high heterogeneity, genesis reservoirs remains unknown. Herein, structure weathering crust in and potential controlling factors on development mechanism are discussed using a multidisciplinary approach based d...

Low permeability porous carbonate rocks occupy a certain proportion in the Middle East. Horizontal injection-production well pattern development is often adopted. Due to influence of type and wellbore, reservoir dynamic monitoring mainly based on conventional daily measurement data, test pressure monitoring. Therefore, it particularly important combine interpretation with production analysis di...

Phase transformation affects multiphase flow in geothermal and gas-condensate reservoirs due to the same substance occurring in different phases. These effects change the phase behavior and the flow characteristics. The goals of this research were to compare the flow behavior and relative permeabilities difference between two-phase flow with and without phase transformation effects in smooth-wa...

In this paper we present the development of a rigorous approach for the solution of non-linear partial differential equations by use of the Laplace transformation — in particular, the convolution theorem for Laplace transforms. While the rigor of this new approach is general, our paper is devoted to the development, verification, and application of this method for the case of real gas flow in p...

Many laboratory and field scale trials have shown that modified salinity water flooding increases the mobility of oil improves recovery. However, simulation process guided by core data leads to inaccurate prediction recovery if effect saturation history reservoir on relative permeability is ignored. Here, we address this problem proposing three models illustrating interplay among wettability al...