... sedimentary rock united states government europe government upstream oil & gas subsurface storage foam injection foam stability stability oil recovery enhanced oil recovery enhanced recovery petroleum engineer reservoir viscosity geology rock type chemical flooding methods society...

... a friction reducer that helps to achieve the goals of Environmental, Social, and Governance (ESG) standards. Similar to guar gum, the new friction reducer can be utilized as a linear gel, or it can be crosslinked to enhance its viscosity, making it ideal for proppant transportation and the protection...

..., and just like the well-known xanthan gum ( Whitcomb and Macosko 1978 ), once solubilized in water, have a rigid rod conformation, which develops very high viscosity and yield stress of the aqueous phase at relatively low concentrations. On the other hand, HEC adopts a flexible conformation in solution...

... the treatments. From the results, it was found that the diverting system can block the formation for a certain period of time (<2 hours). During this period, the diverting system shows the highest viscosity and can temporarily block the high permeability cores (>100 mD) which diverts the injected acid...

... Abstract Polyacrylamide-based friction reducers (FRs) and high-viscosity friction reducers (HVFRs) are designed to reduce friction losses in tubulars and improve proppant placement. Low-cost anionic FRs are suitable, and are often the standard, in mild-salinity environments. However, to perform...

... and the solvent system it is expected that the polymer’s usability as a viscosifying agent can be extended into brackish and possibly produced water. In this study, viscosity vs. time plots are used to find the hydration rates for PAM and PHPA emulsions in fresh water and various brines. Special brines were...

... thickness. Polymer developed in this work demonstrated exceptional properties such as high dispersibility, good thermal stability and low plastic viscosity, when compared with traditional natural and synthetic-based fluid loss control additives (e.g., gilsonite). We have utilized a synthetic molecular...

... proppant completion installation and operations viscosity cationic surfactant hydraulic fracturing fracturing materials concentration zwitterionic surfactant formulation new visco-elastic surfactant formulation completion fluid fracturing fluid surfactant brine cacl 2 rheometer application...

... Abstract Foam is the preferred fluid for underbalanced drilling due to its superior hole-cleaning capacity and reduced liquid requirements. However, it must have reasonable stability to function as a drilling fluid under borehole conditions. Unstable foam loses its viscosity and generates...

... recovery fluvial environment polymer injection viscosity abu dhabi international petroleum exhibition continental environment uae government pius reservoir asia government sedimentary geology depositional environment heterogeneity manantiale behr oil production reservoir simulation...

... months, and their degree of natural self-breaking was tracked by viscosity measurements. Several other classes of polysaccharide were tested in the program, either alone or in combination with xanthan. The tests confirmed that at temperatures in the range 124–170°C (255–338°F) xanthan and the other...

... Abstract The Days Chapel area of the Slocum oilfield was investigated as a target for conducting a polymer flood using heated water. The crude oil in the Carrizo zone of the Slocum oilfield is a heavy oil with an API gravity of about 19 degrees and a viscosity of about 1000 cp. The Carrizo...

... Abstract At present, carbonate reservoirs are becoming more and more complex, and multi-stage alternating injection acidification and acid fracturing process is required. Therefore, we have developed an integrated variable viscosity thickener based on a copolymer of a series of designed...

... Abstract A novel polycyclic aromatic hydrocarbon (PAH) based water-soluble viscosity reducer (VR) formulation was designed to reduce heavy oil viscosity for enhancing heavy oil production by chemical flooding. The polyaromatic structures such as benzene, naphthalene, and pyrene units in the VR...

... Abstract Improvement of mobility control in conventional oil reservoirs is commonly achieved through polymer flooding. This enhanced oil recovery (EOR) technology involves the addition of hydrolyzed polyacrylamide (HPAM) to the injection fluid to increase the viscosity of the displacing phase...

... Abstract This research examines the use of 75nm Zinc Oxide nanoparticles (Nano ZnO) and Polyethylene Butene (PEB) in reducing the viscosity of Nigerian waxy crude oil. The rheology of the crude oil was studied by measuring the viscosity and shear stress of crude samples contaminated...

... weight (Mn = 778,400 g/mol), increasing the strength and stability of the chains. PNAGA-AM system had good thickening and temperature-resistant properties. The thickener viscosity of PNAGA-AM(3.0wt%) had twice as much as that of corresponding PAM system. And the viscosity of the 1.5 wt% solution prepared...

... in viscosity and temperature, thereby altering absolute results when evaluating performance. To apply the simplified assumptions in standard pressure, drop methodology, equivalency in flow rate, density, viscosity, and temperature within the run must be maintained. Performance of the friction reducer...

... Abstract High Viscosity Friction Reducers (HVFRs) are often employed in hydraulic fracturing fluids to increase the proppant carrying capacity of slickwater fluids. However, it has been widely reported that the performance of HVFR fluids drops precipitously with even small amounts of salt...

.... Then, core flooding tests were conducted to examine the NWAG flooding efficiency and its underlying mechanisms. The results showed that the bulk viscosity and viscoelasticity of oil-nanofluid emulsion reported much lower than those of oil-water emulsion, and nanofluid presented a positive contribution...