... Abstract Brazilian offshore activity has increased substantially in recent years, with many new oil fields being developed, and there is also a significant investment in the maintenance and optimization of existing ones. In all cases, the presence of water-in-oil emulsions during oil production...

...- and/or viscous- emulsions. chemical treatment production monitoring brine upstream oil & gas production chemistry emulsion choke valve brazil government oilfield chemistry production control droplet arrival produced fluid problem caused subsea demulsifier oliveira stability low...

... the existence of a non-equilibrium condition at the separation stages (process vessels) related to the existence of a "persistent" (treatment-resistant) water-in-oil emulsion. This condition caused the composition of the produced water to largely deviate from the expected values based on well composition...

... Abstract Water-in-oil (W/O) emulsions are present in some stages of exploration and operation of oil fields. Therefore, it is important to define the dynamic viscosity behavior of these emulsions for flow assurance purposes. This study applied an Artificial Intelligence Algorithm called...

... Abstract During the last years, a lot of work have been done focusing on development of low shear valves solutions to be applied on petroleum primary process plants. The main goal of the low shear valve is to generate water-in-oil (WiO) and oil-in-water (OiW) emulsions that can be easier...

... disperse-bubble volume and of an emulsion, either by the formation of an oil-in-water emulsion or a water-in-oil emulsion. However, the increase in CO 2 partial pressure promoted, in all tested conditions, an increase of the weight loss rate. Thus, the work allowed scoring basic mechanisms of multiphase...

... effective products. production well production chemistry multipurpose product offshore technology conference workplace hazard emulsion rio de janeiro ppm viscosity shear rate synergistic combination efficiency oil viscosity solvent loss h2s management separation corrosion management...

... Abstract Water-in-oil (w/o) emulsions are formed during the simultaneous flow of oil and co-produced water through the well and production pipelines. The viscosity increment due to stable w/o emulsion formation may lead to important production losses as friction pressure drop increases...

... Abstract Emulsions are formed during crude oil production due to the presence of natural surfactants and brine in the petroleum fluids. In addition, turbulence wich the produced fluids are subjected to, either initiated by differential pressure in the drawdown region near the wellbore...

... or to identify well-known molecules that can be improved in order to meet both the market demands and technical requirements, for example: guaranteed inhibitory capacity under several conditions, low emulsion and foaming tendency. In the present work, evaluations of different alkoxylation degrees and types...

..., aerated mud, foam drilling, air or mist drilling, structured microbubbles of air (aphrons), emulsions (both direct and invert), and the addition of hollow spheres (glass spheres, cenospheres, and plastic spheres). This review compiles crucial information necessary to design and formulate the proper low...

... of transportable slurry in the mineral oil system with 30% water cut. The mineral oil and condensate are nonemulsifying, but the pseudo-flow induced in the rocking motion of the cell created shear stabilized emulsion of the liquid phases prior to hydrate formation. Upon hydrate formation onset, the liquid phases...

... The prediction of yield stress for waxy crude oil emulsions and the understanding of oil gelification process play a major role in flow assurance. Oil characterization and its wax content can also provide useful data, specially for engineers engaged in production procedures at offshore...

... of reservoir sweep and pore scale oil displacement. The non-linear flow behavior of complex fluids through porous media gives rise to multiphase flow displacement mechanisms that operate at different scales, from pore-level to Darcy scale. Experiments have shown that injection of oil-in-water emulsions...

... modulated electrostatic fields, improved electrode configurations and materials, as well as improved fluid distribution inside the electrostatic treaters. emulsion crude oil conductivity crude oil emulsion attraction electrostatic treater efficiency dehydration upstream oil & gas composite...

... permeability curve enhanced recovery fluid dynamics concentration petrobras oil-in-water emulsion injection seawater injection experiment emulsion injection recovery factor upstream oil & gas capillary number emulsion oil recovery flow in porous media surfactant solution...

... ratio (OWR) to overcome these challenges and protect the reservoir from drilling fluid damage. The formation damage mechanisms analyzed included: i. Foreign particle invasion ii. Formation clay swelling iii. Chemical incompatibility iv. Oil wetting of the reservoir rock v. Emulsion blocking vi. Fluid...

... by the manufacturer, can also present potential problems, such as incompatibility with other additives and formation of emulsions. To address the challenges of acidizing in the Timano-Pechora region, a comprehensive laboratory and field approach was applied. To achieve better zonal coverage in these heterogeneous...

... viscosity of water/oil/hydrate mixture at different AA concentrations ranging from 0.15 to 2% (w/w) of aqueous phase. The water cut in the emulsion was varied from 60% to 80%. Hydrate formation was controlled, by injecting gas, until apparent viscosity of hydrate slurry increased sharply at a certain...

... OTC 22443 Application of Emulsion Viscosity Reducers to Lower Produced Fluid Viscosity Stephan J Allenson, Andrew T Yen and Frank Lang, Nalco Company Copyright 2011, Offshore Technology Conference This paper was prepared for presentation at the Offshore Technology Conference Brasil held in Rio de...