..., we present an initial study to evaluate long-term stability and dynamic flooding properties of existing water-based tracers in the presence of Portland cement and CO 2 originated ions. The stability experiments were performed at two different temperatures. The dynamic flooding properties were...

... nanoparticles with 0.5 wt.% and surfactant with 0.2 wt.% was then prepared. For the emulsion stability analysis, the emulsion in the sample vial was photographed with a digital camera 5 hours after the generation. Microscopic images of the emulsion samples were also taken by microscope (Nikon Labophot-Pol...

..., CO 2 foam bubbles are stabilized by the presence of surfactants, nanoparticles (NPs) and their mixtures, and stable lamellae or thin-films separate the continuous gas phase, increasing the apparent viscosity of the gas. In fact, foamability and foam stability depends on many factors such as the type...

... functional groups of polymers, crosslinkers and retardants is essential to control the gelation process considering kinetic, strength and stability of the gel. The objective of this work is to better understand chemistry mechanisms in gel formation to design an optimal gelation system for in-depth...

... Abstract Conventional drilling design tends to inaccurately predict the mud density needed for borehole stability because it assumes that the porous medium is fully saturated with a single fluid while in actuality it may have two or more fluids. This paper provides a new semi-analytical...

... behavior of nanoparticles in porous media and underlying mechanisms for improving oil recovery are still not well understood. The objective of this study was to investigate silica nanoparticles adsorption and displacement mechanisms at the pore scale within a micromodel. Another objective was to stabilize...

... Abstract This paper describes a nanoparticle-based approach for stabilizing the low-cost petroleum sulfonate surfactants in high salinity and temperature water to enable their utility in EOR applications in typical carbonate reservoirs. The paper presents and discusses experimental results...

...% friction reduction of the fracturing fluid with surfactant and SA was achieved and fluid stability and compatibility with standard guar-based fracturing fluids was also verified, thus providing compelling evidence for field trials. hydraulic fracturing shale oil fracturing materials proppant oil...

... in more efficient foaming agents, additives and boosters are discussed. Moreover, in depth analysis of field applications of foam in EOR projects show that the main problems encountered during field-scale foam applications are related to foam stability, foam compatibility, as well as adsorption...

... chemicals showed an excellent stability in brine media. A new approach of combining anionic and nonionic chemical agents is proposed, to benefit from these two positive features of an integrated chemical solution. A number of low and high permeability carbonate cores have been successfully treated using...

... hydrate dissociation cannot flow away if the permeability of the formation is very low causing high pore pressure to trap behind the casing. The trapped pore pressure in combination with the casing eccentricity may endanger the stability of the casing depending on the magnitude of trapped pore pressure...

... In this paper, a novel approach for modelling the stability of thin water films in reservoir rocks is presented. A pore model capturing the realistic pore space geometry is obtained from high resolution scanning electron microscope (SEM) images retaining the geometric features of the porous rock...

... Abstract Knowledge of accurate rock strength is essential for in situ stress estimation, wellbore stability analysis, sand production prediction and other geomechanical applications. Reliable quantitative data on rock strength can only be obtained from cores. However, cores are limited...

... and/or cementing, causing gas release which could result in delaying completion of the wellbore due to the flow of gas around the casing (conductor pipe) or affecting the casing integrity or casing stability by creating voids (channels) in the cement sheath leading to non-uniform stress loadings...

... over the liner holes takes place at low values of far-field stress. However, elevated values of far-field stress lead to a continuous, high-rate (‘massive’) sand production. stability mechanism strength fluid flow wellbore reservoir geomechanics spe 65183 reservoir characterization sand...

... reservoir restriction stability field experience cross-linking solution spe 65278 auxiliary perforation polymer gas-capped oil reservoir enhanced recovery injection application perforation gas flow lakato Introduction Restriction of gas coning and dipping in vertical and horizontal...

... compatibility are recorded to quantify performance. Emulsion droplet size and distribution are key parameters influencing flow and (in) stability under practical scenarios, and optical microscopy investigations on systems as a function of time and temperature are presented. A move from largely monodisperse...

... tops ides equipment; it has also identified some critical issues which require additional attention, e.g. pressurisation with water under the bases to extract the tanks from their soil foundations and naval stability when the platform is raised to the surface. In addition the structural integrity...

... with the numerical model that parametric studies were performed to evaluate the influence of casing weight, steel quality, wellbore inclination, etc. on the casing stability. Finally, the results of all calculations performed were combined in order to derive global recommendations for the field. A similar...

... ABSTRACT A novel sulfonated polymer used as a fluid loss additive in water base drilling fluids is introduced. Major features of this 100% synthetic polymer are temperature stability up to 400°F (200°C), salt tolerance up to saturation, hardness tolerance to 75,000 ppm calcium ions and complete...