Time variability of reservoir parameters in water flooding has an effect on oilfield development rules. Meanwhile, time variability of different reservoir macro-parameters has certain synergetic relationship with each other. Based on microscopic network simulation and reservoir numerical simulation, a new simulation method is presented, which can describe the influence of reservoir parameters' ...

We use three-dimensional X-ray imaging to investigate steady-state three-phase flow in a mixed-wet reservoir rock, while measuring both relative permeability and capillary pressure. Oil occupied the smallest pores, gas biggest, water medium-sized pores. report distinct pattern, where flows form of disconnected ganglia by periodically opening critical pathways. Despite having capillary-controlle...

Multilayer diffusion and capillary condensation of propylene on supported y-alumina films greatly improved the permeability and selectivity. Multilayer diffusion, occurring at relative pressures of 0.4 to 0.8 strongly increased the permeability to 6 times the Knudsen permeability, yielding permeabilities of 3.2 x 10m5 mol/m’-see-Pa. The occurrence of a maximum in the permeability coincides with...

BACKGROUND It is generally assumed that the tissue exchange of antibiotics is flow limited (complete equilibration between the capillary and the tissue water). This assumption may not be valid if there is a large amount of plasma protein binding because the effective capillary permeability depends on the product of the intrinsic capillary permeability (PS) and the fraction of solute that is fre...

recovery factor is an important parameter in determining commercial viability of the oil reservoirs. wettability is a major factor that affects oil recovery. therefore, changing rock wettability may enhance oil recovery. in this paper, the effect of polysilicon nanoparticles on wettability change of iranian carbonate reservoir is investigated. to assess this, hydrophilic changes of carbonate ro...

1N T GENERAL, previous investigators have concluded that the capillary permeability to proteins is either normal or increased in patients with congestive failure." I t is difficult to reconcile such results with the consistent finding of increased plasma volume in congestive heart failure. In a previous study of normal individuals, iodinated serum albumin was used to measure the transcapillary ...

Foam flooding (or injection of foam) is a common technology to enhance oil recovery. Although the effects of permeability on foam flooding were well studied in many laboratory experiments, little research has been focused on the specificity of low permeability. In this paper, a series of constant-quality nitrogen foam flow experiments were conducted to investigate the effects of permeability on...

Background—Capillary leakage with fluid loss into the third space contributes to many of the early systemic complications in severe acute pancreatitis. There has been increasing interest in endothelin as one of the factors aVecting capillary permeability. Aim—To elucidate further the role of endothelin in the development of capillary leakage in acute pancreatitis by investigating the eVect of e...

BACKGROUND Capillary leakage with fluid loss into the third space contributes to many of the early systemic complications in severe acute pancreatitis. There has been increasing interest in endothelin as one of the factors affecting capillary permeability. AIM To elucidate further the role of endothelin in the development of capillary leakage in acute pancreatitis by investigating the effect ...