... concentration salinity Upstream Oil & Gas viscosity application chemical flooding methods Symposium reservoir degradation Oil Recovery saturation enhanced oil recovery polymer Wang screening criteria polymer solution permeability Status of Polymer-Flooding Technology James J. Sheng, Texas...

... measurements have been performed on 30 samples from the Daqing Oil Field using the four-electrode technique. The effects of charging current, charging and discharging time, brine salinity, and water saturation on the relaxation spectra of the rock were analyzed qualitatively, so that we could develop a new IP...

...J.P. Spivey; W.D. McCain, Jr.; R. North New correlations for density of methane-free sodium chloride brine and solubility of methane in sodium chloride brines, valid over wide ranges of pressure, temperature, and salinity, are presented. Both correlations agree with the best available measurements...

... of nitrogen, phosphorus, salinity levels, and incubation temperature on the biodegradation of hydrocarbons in FP pit waste employing a statistical partial factorial experimental design. A soil contaminated with flare pit hydrocarbons was treated with nitrogen (500, 1,250, or 2,000 mg/kg of soil), phosphorus...

.... In the particular case of the waterflooding pilot project across the Cerro Fortunoso field (Malargue, Argentina), the occurrence of several water supplies of widely varying salinity coupled with the usual problems. This paper describes a pilot study designed to determine the optimal salinity of water to be injected...

... of this paper is to investigate electrical resistivity measurement sensitivity on a real reservoir model involving a saline water injection process. The sensitivity model studies are accomplished using several 2D numerical models. The concept of interpreting -monitoring resistivity data directly in terms...

... Sodium Hydroxide crude oil drilling fluid property drilling fluid formulation alkaline solution kareem crude oil Upstream Oil & Gas shale content salinity drilling fluid selection and formulation waterflooding concentration contact angle sodium silicate formation water Kareem Formation...

... of temperature and salinity are described. Adsorption of (he anionic surfactants from a low salinity brine is low, but increases substantially at moderate salinities. Limited solubility of the anionic surfactant in aqueous media tends to drive these surfactants to the solid/liquid interface and can also lead...

... study addresses propagation and adsorption of an anionic surfactant with high salinity tolerance in unfired Berea sandstone cores. Such surfactants are used in alkali/surfactant (2) and alkali/surfactant/polymer (3) flooding to increase the optimal salinity of petroleum soaps encountered...

... by ensuring the fine solids remain dispersed during digestion by adjustment of digestion water salinity and pH. Recovery of bitumen from high-grade oil sands appears to be controlled by surfactants which affect bitumen water interfacial tension and the size of bitumen droplets formed during the initial...

... experiments (11) . enhanced recovery Upstream Oil & Gas divalent ion waterflooding petroleum sulfonate alone petroleum sulfonate drilling fluids and materials surfactant formulation salinity ionic concentration crude oil formulation interfacial tension behaviour drilling fluid management...

...S.I. Chou; D.O. Shah Our laboratory studies showed that the concept of the optimal salinity, as derived from phase behaviour or interfacial tensions of microemulsions, is applicable to oil displacement by soluble oils in porous media. Maximal oil recovery was obtained when the salinity of connate...

...R.H. Millar; R.S. Buckles In the Beaufort sedimentary basin, the salinity of native formation waters is unusually low and highly variable. This has made it difficult to distinguish between invaded mud filtrate and formation water when interpreting the results of limited-volume tests. Examples...

..., actual results in commercial wells and test pits have demonstrated that the log has important advantages over other nuclear logs. It has been found to have much better sensitivity to formation fluid salinity than any other cased hole log. As experience is gained in interpretation techniques, the new log...