... with formation and completion fluids No formation damage-100% retained permeability-when the well is produced Minimal environmental footprint The most common fluid-loss control pills used to provide temporary zonal isolation are composed of sized particles of calcium carbonate or salt suspended...

... filtration experiments with core samples and a profile of invaded mud components reconstructed by X-ray microCT, image processing of a cleaved sample, and ultrasonic wave scanning. Examples of reconstructed profiles of invaded mud components (solid particles and bentonite clay) as well as the procedure...

... Abstract The key to formation damage control is minimizing the depth of contact/impact of the formation and drilling fluid by minimizing solids and liquid invasion into porous (fractured) formations. Analysis of downhole filtration conditions and particle size (distribution) measurements were...

... with drilling fluid's filtration. The effects of mud cake build up and filtration with time aids the understanding the physical mechanisms. The increase of drilling in high temperature and pressure zones (HTHP) necessitates studies that can predict filtrate invasion, and particle bridging. Decreasing the near...

.... This paper describes a new nanosilica system that demonstrates non-spherical-shaped nanosilica particle assemblies, such as rod-like and string-of-pearl geometries that display superior gelation activity in the presence of salts, exemplified by sodium chloride, compared with their spherical counterparts...

... Abstract Injection of colloids and suspensions in natural reservoirs accompanied with particle capture and external cake formation results in well injectivity decline. External filter cake build-up followed by stabilization is a well-known phenomenon in several engineering fields. Significant...

... in the model. Incremental oil recovery depends on the number of the flooded layers. Austad residual oil saturation Upstream Oil & Gas relative permeability enhanced recovery concentration plug waterflooding particle recovery factor saturation pervomaiskoye field HSW LSW incremental oil...

... and permeability. All these features increase the possibility of troublesome sand production. It has been shown that nanoparticles can effectively reduce double layer repulsive forces between sand particles through changing the associated zeta potentials; the reduction of repulsive forces between loose particles...

... coreflood testing with constant and stepwise decreasing ionic strength has been performed with measurements of the pressure drop along the core and accumulated effluent particle concentration. Stabilisation of rock permeability occurs after injection of numerous pore volumes, suggesting slow drift...

... Abstract Low productivity indices are observed in many moderate-to low-permeability coal bed methane (CBM) and shale gas (SG) reservoirs due to low aperture and poor connectivity of natural cleats. A method is proposed for injection of graded proppant particles into a cleat system below...

.... flow in porous media external cake formation waterflooding concentration enhanced recovery Fluid Dynamics kalantariasl particle impedance growth particle size cake permeability formation damage coefficient water management Upstream Oil & Gas Bedrikovetsky coefficient deep bed...

... for the stabilised impedance is based on the torque balance of attaching (electrostatic and permeate) and detaching (drag, lifting and gravity) forces exerting upon a particle on the cake surface. If compared with the previous models, this paper accounts for electrostatic force and for varying non-unit value...

... mechanism enhanced recovery experiment water relative permeability displacement waterflooding Brine pressure drop salinity core sample bedrikovetsky particle Oil Recovery migration saturation permeability Introduction Improved recovery of oil by injection of low salinity brine has...

... the permeability. Its severe consequences will reduce oil and gas productivity and CO 2 injectivity in the reservoir. In this study a numerical simulator is developed and it solves the fluid flow equations, chemical reactivity equations, particle transport and particles deposition equations to predict the amount...

... of the proppant pack through a polycarbonate window. Images taken have been analyzed, which provides quantitative information about the relationship between relative permeability and fine particles invasion. Results using produced water samples revealed that electrocoagulation (EC) treatment would increase...

... be the origin of screen plugging. This work will set new standards in stand alone screen design in Total. sand control sand production uniformity Screen Selection screen coupon completion Upstream Oil & Gas slurry test particle sand retention performance spe 165170 key parameter filter...

... Abstract Sand screen selection relies on accurate particle size information for the sands that need to be controlled. Within the oil industry there is awareness of the differences between dry sieve analysis and laser particle size analysis (LPSA), but there can also be wide variations between...

... Abstract Two important aspects often overlooked in the design of bridging solids packages for drilling fluids are: a) obtaining accurate particle size measurements, and b) allowing for the influence of particle attrition. This paper explores both aspects and illustrates, using field data...

... in that it evaluates the impact of rock stresses and various flow conditions, including extended flow periods, thus addressing potential fines migration from both native (i.e., movable silty/clayey particles present within the rock fabric), and non-indigenous particulates generated by the crushing and shearing...

... The following assumptions were made to solve the problem. (1) The density of the particles is constant in deposited and suspended states is constant and for a specific packing, porosity is constant and permeability depends only on grain size. (2) The volume of entrapped particles is considered...