The progress of existing geophysical techniques for the last years led to a wider scope problems resolved using this set tools. tools allow tackling pivotal tasks such as study lithology in geological section, correlation, evaluation saturation, porosity, permeability, and clay fraction, outlining oil-gas water-saturated layers. Complications emerging while resolving these directly depend on pe...

OBJECTIVE This study aims to evaluate the antimicrobial activity, phytochemical studies and thin layer chromatography analysis of machine oil, hexane extract of seed oil and methanol extract of presscake & latex of Jatropha curcas Linn (family Euphorbiaceae). MATERIALS AND METHODS J. curcas extracts were subjected to preliminary qualitative phytochemical screening to detect the major phytoche...

Pressure retarded osmosis (PRO) has the potential to produce clean, renewable energy from natural salinity gradients. However, membrane fouling can lead to diminished water flux productivity, thus reducing the extractable energy. This study investigates organic fouling and osmotic backwash cleaning in PRO and the resulting impact on projected power generation. Fabricated thin-film composite mem...

To generate polyethersulfone membranes with a biocatalytically active surface, pancreatin was covalently immobilized. Pancreatin is a mixture of digestive enzymes such as protease, lipase, and amylase. The resulting membranes exhibit self-cleaning properties after “switching on” the respective enzyme by adjusting pH and temperature. Thus, the membrane surface can actively degrade a fouling laye...

The study discusses the characteristics of Jurassic reservoir in Shenquan Oilfield Xinjiang. Qiketai Sanjianfang formation mainly develops delta front facies and shore shallow lake sand bodies.The lithological are fine sandstone siltstone, physical properties target layer medium porosity permeability. space is pore type, composed secondary pores, including intergranular dissolved intragranular ...

a r t i c l e i n f o Keywords: Low-salinity Waterflood LSW Brine Double-layer Sandstone Carbonate Film Low-salinity waterflooding is a relatively new method for improved oil recovery that has generated much interest. It is generally believed that low-salinity brine alters the wettability of oil reservoir rocks towards a wetting state that is optimal for recovery. The mechanism(s) by which the ...

The impact of heterogeneity induced mixing between the injected low salinity water and the high salinity connate water is investigated in secondary low salinity waterflooding (LSW). Although LSW has proved to be a promising EOR process in laboratory experiments and field trials, its efficiency can be altered due to mixing with in situ higher salinity connate water. This mixing is caused by mole...

A key difficulty infabricatingfuel capsules with polymer wallsfor inertial fusion is the high permeability of most polymers to the hydrogen isotopes used as fuel gases. In this article, it is shown that a thin aluminum layer can increase the retention time of a polymer shell for D2 from several minutes to several hours, while remaining transparent enough to allow interferometric measurement of ...

This paper explores the hypothesis that chlorinated solvent releases evolve temporally and spatially. A two-layer system is considered involving a transmissive layer (e.g. sand) situated above a low permeability layer (e.g. silt). A DNAPL like source is present in the transmissive layer at the upgradient edge of the model domain at the contact between the two layers. A constant source is active...

In oil industries, water injection into oil reservoirs for pressure maintenance, oil displacement, and oil recovery is a common technique. Formation damage during water injection is a major problem in this process. Formation damage from the incompatibility of formation water (FW) and injection water (IW) causes a reduction in the permeability around the injection wells. Therefore, it is necessa...