Steam-assisted gravity drainage (SAGD) is one efficient and mature technology for recovering heavy oil bitumen resources. The key underlying mechanism the growth of steam chamber after injecting steam. However, due to complex geological environment, thief zones exist have a prejudicial effect on development chamber, thus impacting ultimate heavy-oil recovery. In this work, our objective investi...

SAGD (Steam Assisted Gravity Drainage) is used in Canadian fields where there are interlayers that impede steam chamber development and thus production. Many experiments have been conducted on the effect of oil recovery. However, swelling characteristics under different conditions, as well possible clay mineral transformation particle migration particles at high temperatures, rarely studied. In...

Zhong18 wellblock of Fengcheng oilfield developed with low permeability interlayer and had strong heterogeneity, which caused steam chamber conventional assisted gravity drainage (SAGD) process cannot extend lengthwise continuously serious heat loss. To address this problem, a method acid fracturing SAGD is proposed to enhance the oil improve recovery. Based on herringbone well being used in we...

Augmentation of venous drainage with either kinetic-assisted drainage (KAVD) or vacuum-assisted (VAVD) has been used clinically in order to overcome added venous resistance due to smaller venous cannulae or tubing. This in-vitro study evaluates the extent of hemolysis and sub-lethal red blood cell membrane damage than occurs with augmented (kinetic or vacuum) when compared to conventional gravi...

The development of phase change models applicable to a wide range temperatures, pressures, and mass flow rates is primarily limited by the metastable or partially stable behaviour fluid. Due this, fluid does not even after crossing saturation conditions. Most liquid–vapour have been developed for cavitation process where sustained, occurs in very narrow region space, under equilibrium In this p...

When conventional gravity siphon venous drainage cannot achieve satisfactory venous drainage during minimally invasive cardiac and neonatal surgeries, assisted venous drainage techniques are needed to ensure adequate flow. One assisted venous drainage technique, vacuum-assisted venous drainage (VAVD), the aid of a vacuum in the venous reservoir, is now widely used to augment venous drainage dur...