... 1 M = λ w λ o = k w · μ o k o · μ w Where λ is mobility; μ is viscosity; k is relative permeability; and the subscript refers to the oil (o) and water (w) phases. In almost all field applications of polymer EOR the polymer used is based...

... Traditional chemistries such as phosphonates perform under milder Pre-Salt brine conditions (70°C) but show decreased performance at higher temperatures (135°C) (Borges E. 2022). Polymer-based scale inhibitors have generally shown good performance at inhibiting carbonate scale where field...

... DTPMP, NTMP, and BHPMP are among top three performers. In polymers, PPCA and SPCA were better than other polymeric inhibitors. The critical inhibitor concentration in presence of DTPMP, NTMP, BHPMP, HDTMP, EDTMP, HEDP, PBTC, PPCA, SPCA, PAPEMP, PMAC, PASP, AA/AMPS. In general, most of common phosphonate...

... was visually inspected whether there was change in solution color or polymer aggregation. Sample analysis and data evaluation To evaluate inhibition or dispersion of sulfide scales, metals were measured in solution passing through 1.2 or 0.22 μm pore-size nitrocellulose membrane after 2-hour reaction...

... occurred during the coldest days when Hexs temperature was raised to 160°C to increase heat to treat fluids. Meanwhile, it also suffered antagonistic effects from the EOR polymer. A dozen new inhibitor chemistries were studied including polymers and phosphonates. Polymeric inhibitors had higher thermal...

.... This paper experimentally demonstrates potential changes to inhibitor adsorption from a polymer EOR project by demonstrating the complex interactions between HPAM and phosphonate scale inhibitors with respect to adsorption. This work presents a detailed coreflooding programme, supplemented with bottle tests...

... and the fluorescence analysis is representative ( Poynton et al 2012 ). The small amount of F tag also does not impact on the scale inhibition performance or retention of the polymeric SI's. It is also necessary to demonstrate that the fluorescent tags are thermally stable. As an example, the third F tag polymer...

... Abstract Mineral scaling issues have been reported in many alkaline and Alkaline-Surfactant-Polymer (ASP) projects. The role of the in situ mineral reactions on the produced scaling ions and pH has been little reported in the literature. The objective of this study is to investigate...

... of this technology in the literature [ 20 , 26 ] has been very positive indicating near real-time squeeze treatment monitoring with concentrations of phosphonates and polymers as low as 1mg/L can be reliably detected using this method of analysis. We have shown the method is applicable to both analysis of polymeric...

... The presence polymer increases the viscosity of the injected brine slug which in turn affects the degree of mixing between the two incompatible brines, and so the nature and amount of scale deposition. In addition, the salinity of the make-up brine that is used to control polymer solution...

... phosphorus can be a factor of ten times lower cost to perform than labour intensive bench top "wet chemical" approaches for polymeric inhibitors. Due to this and the desire to improve accuracy large arrays of "tagged" polymers containing a more readily assayable fluorescent tag or various "P" containing...

... functional groups as well as a range of molecular weights were evaluated. Our laboratory studies indicate that a polymeric compound containing amide functionality showed a promising effect by preventing of iron sulfide scale deposition at threshold quantities. Specifically, the polymer did not prevent...

... inhibition Scotland polymer inhibitor detection polymeric scale inhibitor detection method sulphonated copolymer Aberdeen scale inhibitor polymer water sample fluorescence accurate detection fluorescent Introduction One of the major problems associated with oil and gas production...

... Polymer containing a special functional amine group – Modified The scale inhibitors examined in this study included an acrylic co-polymer, traditional phosphonate and carboxylic acid co-polymer products (SI-A, SI-B and SI-C)along with polymeric inhibitors containing a special functional amine...

... be very varied and usually comprises different types of transition metal salts, hypophosphite or persulfate species. Different monomer units can be polymerized using different initiator and free radical species to yield the same polymer. However, subtle differences can result, including poly-dispersity...

... accuracy si polymer remediation of hydrates concentration dilution polymeric scale inhibitor scale inhibitor lanthanide complex analysis system Cuvette application synthetic brine international symposium polymer concentration inhibitor chemistry residual monitoring inhibitor standard...

... will be presented here. Development of Novel Polymeric Scale Inhibitors Polymer A was performance tested combination of iron, zinc and lead at elevated concentrations (50 mg/L of each). Figure 5 shows the combined iron/zinc/lead sulfide inhibition efficiencies at different concentrations after 24 h...

... 22 the active inhibitor components are better determined the polymer assay content and such significant differences are not uncommon both in core studies and field returns. The differences relate to the presence of residual (non polymeric) reactive "P" containing components preferentially retaining...

... included an acrylic co-polymer, traditional phosphonate and carboxylic acid co-polymer products (SI-A, SI-B and SI-C) along with a polymeric inhibitor containing a special functional amine group (SI-D), and the basic structure for which is shown in Figure 1 . The product is an acrylate containing co...

... production chemistry upstream oil & gas remediation of hydrates asphaltene inhibition mass spectrum polymer 2 polymer 1 scale inhibitor quantification generation methodology water management oilfield chemistry scale inhibition polymer concentration polymeric scale inhibitor rd generation...