The casing damage of oil and water wells has seriously affected the normal production oilfield. This paper analyzes high occurrence in Saertu layer, finds that there is a contradiction between injection formation prevention control damage. Although wellhead pressure can be guaranteed to lower than its fracture during production, injected energy at includes potential kinetic energy. Because rela...

Abstract The E gas field is a typical dense sandstone reservoir. It faces the problem of sewage treatment during production and development due to influence water formation. H area with weak capacity selected for re-injection evaluating its significant step before treatment. In this paper, geological modeling numerical simulation are carried out evaluate drainage in Area East field, maximize am...

Purpose. Based on high-pressure gas injection technology that enhances coal seam drainage, the effect of CH4 replacement with CO2 in aquiferous has been studied. Methods. Using laboratory experimental method and self-built device, is injected into different moisture contents to replace under adsorption equilibrium pressures. Findings. With an increase content, capacity for gradually weakens, al...

abstract polycyclic aromatic hydrocarbons (pahs) are classified as persistent and carcinogenic organic pollutants. pahs contamination has been reported in water. many of relevant regulatory bodies such as eu and epa have regulated the limit levels for pahs in drinking water. in this study, 13 priority polycyclic aromatic hydrocarbons (pahs) were determined in tap water samples of tehran and wat...

Injection of rats either with diazoxide (25 mg/kg iv), isoproterenol (0.33 mg/kg sc), or hydralazine (HDZ) (10 mg/kg ip) decreased arterial blood pressure from approximately 120 to 70-80 mmHg and stimulated renin secretion. However, diazoxide and isoproterenol treatments each stimulated water ingestion, whereas HDZ treatment did not. HDZ treatment did not reduce water intake evoked by systemic ...

This study experimentally investigates the effect of processing parameters on mechanical properties of injection molded copolymer. This paper presents an experimental study on the effects of processing parameters including melt temperature, injection pressure and amount preliminary materials on tensile strength of injection molded copolymer PP-WGRT. Polypropylene (PP - supplied by T.P.C of Iran...

Microscopic oil displacement of water flooding and sweep efficiency of continuous gas injection could be improved by water alternating gas (WAG) injection. The WAG injection process aims to squeeze more oil out of the reservoirs; in this method, water and gas are alternatively injected into the reservoir. Also, availability of hydrocarbon or CO2 gases in the field makes it attractive for gas-ba...

Abstract Gypsum crystals are found at the well perforation of observation Ktzi 202 test site for CO 2 storage Ketzin, Germany. XRD analysis confirms pure gypsum. Fluid samples before and after injection analyzed. Geochemical modeling is conducted to identify mechanisms that lead gypsum formation. The carried out with PHREEQC Pitzer database due high salinity up 5 mol per kg water. Due their sig...

After two bid rounds of oilfields, moo has planned a plateau oil production 12mmbblsd in 2017. order to reach the production, most oilfields require water injection maintain reservoirs‟ pressure. there are three main challenges injection. firstly, where could urgent resource be available rehabilitation phase brown oilfields? secondly, how high amount produced handled at late stage thirdly, what...

The fiber orientation is playing an important performance indexed for glass reinforced polypropylene water-assisted injection molding. Based on the viscoelastic constitutive equation (White-Metzner) and model (iARD-RPR), effects of mass content, water delay time, pressure, melt temperature, which are along flow direction shear rate distribution melt, were investigated. Studies found that degree...