Dispersed particle gel (DPG) particles of nano- to micron- to mm-size have been prepared successfully and will be used for profile control treatment in mature oilfields. The profile control and enhanced oil recovery mechanisms of DPG particles have been investigated using core flow tests and visual simulation experiments. Core flow test results show that DPG particles can easily be injected int...

Endothelial barrier dysfunction leading to increased permeability and vascular leakage is an underlying cause of several pathological conditions, including edema and sepsis. Whereas cAMP has been shown to decrease endothelial permeability, the role of cGMP is controversial. Endothelial cells express cGMP-inhibited phosphodiesterase (PDE)3A and cGMP-stimulated PDE2A. Thus we hypothesized that th...

Endothelial barrier dysfunction leading to increased permeability and vascular leakage is an underlying cause of several pathological conditions, including edema and sepsis. Whereas cAMP has been shown to decrease endothelial permeability, the role of cGMP is controversial. Endothelial cells express cGMP-inhibited phosphodiesterase (PDE)3A and cGMP-stimulated PDE2A. Thus we hypothesized that th...

The N2 flooding enhanced oil recovery process is an important technical means for the development of low permeability reservoirs due to its good energy enhancement effect and injectivity. Low have a large span strong heterogeneity, which will significant impact on gas injection development. In order explore influence matrix fractures production characteristics flooding, this study conducted ser...

The No. 21 coal seam in the Zhengzhou mining area is a soft, three-layer, low-permeability prone to outbursts. three-layer structure includes and roof floor layers, which exhibit high gas contents poor permeability. dynamic hazards caused by outbursts are very serious. A new permeability-increasing fracturing technique that combines hydraulic perforation was developed specifically for geologic ...

the simultaneous flow of oil and water in porous media is described by relative permeability curves, mainly derived from laboratory experiments. relative permeability is of paramount importance in predicting reservoir production performance and drive mechanisms and its value depends largely on the volume fraction of fluids present in the test samples. nowadays x-ray scanners are one of the most...

propose: standard electroporation and electrochemotherapy caused the endothe- lial cell permeability and reduction in tumor blood flow. the effects of low voltage and high frequency electroporation on the endothelial cells permeability and viability were expected. therefore, the propose of present study was to evaluate the effect of electroporation with bleomycin or alone on viability and perme...