... concentration of the iron control and chelating agents to meet the needed stability to stimulate oil and gas wells. This work includes the measurement of the stability of emulsified acid and the reaction weight loss as a function of the concentration of these agents at different periods of heating time...

... surfactant at various concentrations from 0.1 to 1%. Results show a considerable reduction in IFT with viscoelastic surfactant up to 10 −1 mNm −1 range. IFT reduction usually depends on the concentration of solutions used. Results also show that ultralow IFT was obtained at 50°C and 80°C. Encouraging...

... as possible to minimize non-productive time. Conventionally, discrete pills formulated using a material blend with broad particle size distribution (PSD) are employed first as one of the more popular approaches for curing severe lost circulation. The lost circulation material concentration and PSD...

... the nanoparticle based dispersion gels up thus avoiding premature setting of the treatment fluid. The newly developed system can be used effectively up to 300°F. The gelation times were evaluated at different temperatures up to 300°F. The effects of pH and different concentration of activators on gelation times...

...Key Products and Parameters A diesel-based non-aqueous fluid (NAF) system was used to drill Khuff B and C sections. The key bridging material concentrations maintained while drilling is listed in Table 1 . The concentration of the bridging package was always kept between 3 to 5%. Highly...

...) is one of the polyacrylamide groups. It is characterized by the shape of straight chain polymer of acrylamide monomers in which some of it has been hydrolyzed. The viscosity of the polymer solution should be maintained in order to keep better sweep efficiency. Salinity, polymer concentration...

... chloride (CaCl2) were used to prepare the brine. The imbibition test and core flooding results showed that the oil recovery increased as brine concentration decreased for both sodium chloride and calcium chloride. Sodium chloride resulted in higher oil recovery than calcium chloride at a certain salinity...

... strategies, especially inhibition through polymeric scale inhibitors are discussed for research and development approach. Sulfide scale is handled with preventing and inhibition. Preventing sulfide scale deals with reducing H2S or iron ions. Due to high concentrations of H2S gas in the sour gas wells...

... showed a very stable emulsion formed by in-house developed Arc-Eco-Mul. Concentration screening experiments showed that only 6-ppb loading of Arc-Eco-Mul is required to achieve a mud with very good rheological and filtration control properties with high emulsion stability. The in-house developed Arc-Eco...

... drilling fluids and materials mineral oil OBM system drilling fluid chemistry drilling fluid formulation arc eco-spot vegetable oil commercial green lubricant chemical modification waste vegetable oil mudcake raw material emulsifier drilling fluid property base stock concentration mud...

... evaluated at two different concentrations. The main objective of this research is to investigate the effect of adding nanoparticles on the rheological properties of water-based drilling fluid. A simple 7% bentonite water-based mud was used in this study as a reference point. The rheological properties...

... outcome treatment design Texas concentration fracture design Midland Basin Permian Basin Wolfcamp formation log data paucity proppant society of petroleum engineers available data hydraulic fracture design Fracture Profile case study Introduction Hydraulic fracturing which started...

... oil recovery for the core saturated in normal Ca 2+ concentration at higher temperature was higher than the core saturated with double Ca 2+ at the same temperature. The divalent cation (Ca 2+ ) concentration was then doubled in the aging water, resulting in a lower oil recovery. The thermal...

.... Modeling & Simulation concentration salinity enhanced recovery adsorption viscosity saturation chemical flooding methods polymer pore surfactant injection permeability distribution equation Upstream Oil & Gas Efficiency polymer flooding SMA cumulative production comparison...

... operation over conventional 100% barite based drilling fluid. These water based drilling fluids after a series of lab investigations have been designed to have an optimum concentration of barite and manganese tetroxide in order to have the following mentioned advantages over conventional drilling fluids...

... usually added in OBM formulations. We investigated the effect of different surfactant concentrations on the fluid-fluid interfacial tension (IFT) properties and on the fluid-solid interaction properties, using contact angle measurements on both sandstone and carbonate model surfaces. Furthermore, we...

... to use the minimum concentrations, and making hard plugs of proppants pillars under pressure and temperature (up to 350°F). Furthermore, proppant suspension tests with and without pulsing were conducted at temperatures up to 300°F to evaluate the ability of creating the conductive channels. Finally...

... polymer is one of the most widely used water-soluble polymers in EOR technique ( Argabright et al. 1982 , Swiecinski et al. 2016 ).Once the solutions are injected into the subterranean oil-bearing formations, the polymer concentrations could change owing to the physical and chemical degradation...

... polymer injection project slug size day time application polymer solution design scheme optimization problem concentration inverse design ann model flow rate profile equation design parameter Upstream Oil & Gas fraction 0 polymer concentration algorithm society of petroleum engineers...

... results were history-matched using UTGEL simulator and an excellent agreement between lab data and simulation data was achieved. The simulation results of the filed scale indicated that the PPG concentration and PPG treatment timing are the main PPG design variables and the conformance control improved...