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Keywords: concentration
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Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213882-MS
.... This suggests that the titrated species was carbonate. This aligns with the pH of the distillates measuring ≥9.1. It was also evaluated whether starting with a larger volume of produced brine could result in higher alkalinity concentration in the distillate. In Table 3 , three brines were also distilled...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213867-MS
.... In Figure 3 , individual technical stages of the workflow are shown for technology development. As a first step, measured values of chemical-physical parameters (density, pH) and elemental concentrations (Na, Ca, K, Mg, Ba, Sr, Cl, HCO 3 , SO 4 ) of produced water from historical samples in a specific...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213858-MS
... weeks) were performed on the chosen chemicals to understand temporal change of SI residue concentration after contacting with formation rock during test period. In addition, a scale dissolver performance was evaluated for barite scale under different temperature and soaking times for scale remediation...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213803-MS
... in high-salinity environments, anionic FRs require one of the following: 1) an increase in polymer activity/concentration/molecular weight, or 2) the introduction of sulfonated/cationic monomers. This study presents the screening process of commercial boosters used to improve the performance of low-cost...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213860-MS
.... Figure 1 Alba reservoir and Main Channel wells. Biogenic reservoir souring is the process by which sulfate reducing microorganisms (SRM) generate H 2 S in oil reservoirs, often as a result of water flooding. This process is influenced by the water source, concentration of sulfate, a carbon...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213789-MS
... and salinity as high as 57,670 mg/L. The interfacial tension (IFT) of the developed nanosheet and surfactant system with crude oil was not ultra-low, but it showed excellent interfacial activities in emulsification tests and phase behavior tests even at low concentrations. Nanosheet produced much stable...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213861-MS
... instrument experiment rock sample diameter is 2.5 cm/3.8 cm, reaction vessel capacity is 1 L, working temperature is 25-250 °C, working medium is different concentrations of hydrochloric acid, all kinds of acid. Results and Discussion Via a controlled radical polymerization, we introduced two types...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213828-MS
... was used to condition the core and synthetic seawater was used as the injection brine. This synthetic seawater was also mixed with the EGMBE to create a 20% (v/v%) mutual solvent in seawater. Table 1 Brine compositions used in coreflood experiments. Concentrations in mg/L. Test...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213799-MS
... Figure 4 Static surface tension of surfactants as a function of active concentration. Abstract Metal sulfide scales are found in several fields in onshore and offshore oil and gas wells around the world. Although there has been some success in the development of sulfide scale...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213843-MS
... concentration required to control both calcium carbonate (saturation ratio, SR 550, mass 1100mg/l) and barium sulphate (SR 55, mass 450mg/l) scale formation. For this challenging carbonate (milder sulphate) scale environment at high temperature (105°C), it was observed that a blend of a polymer (carboxylic...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213827-MS
... Figure 4 Calculated SI values of anhydrite by (a) SSP2022 and (b) PHREEQC V3 in CaCl 2 solution at different temperatures. Na<sub>2</sub>SO<sub>4</sub> concentration impact To clarify the common ion effect and the ionic strength effect, the effect of SO 4 2- was further examined...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213880-MS
...+ concentration and flow rate (mL/h), respectively. A precipitation kinetic graph can be generated using [ F e 2 + ] t and 1/Q. Coupon Surface Analysis After 72 hrs, two coupons were collected, rinsed (DI water followed by ethanol), and dried (CO 2 ) prior to surface analysis...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213826-MS
... united states government europe government water management upstream oil &amp; gas asia government norway government biocide biocide application conference formulation reduction hydrocarbon continual injection injection brine permeability saturation corrosion inhibitor concentration...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213806-MS
... damage reactivity diluent-1 figure 9 diluent consolidation permeability concentration exhibition resin formulation strength polymer uc strength brine bentonite sand consolidation affinity diluent-10 diluent-8 Figure 1 Chemical Consolidation Enhanced Reservoir Critical Point...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213868-MS
... which were analysed away from the well site gave erroneously low mercury concentrations that were subsequently used for field development plans. It is not only the material of construction which can compromise samples in cylinders; the presence of grease and hydraulic fluid in piston cylinders, used...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213842-MS
... multiple wells in comingled flow, discretely detectable tags are added to a Vs-Co polymeric scale inhibitor. Each well in a tieback can be squeezed with a different tag. Then, a comingled sample is collected, and the residual concentration of each discrete tag detected, normalized against production rates...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213792-MS
..., but with target output sulfate concentrations of between 10 and 30mg/l, the high capital investment required may not be economically viable for assets that are reaching the end of their production lives. Thus, in most cases, the management of sulfate levels are achieved chemically by the addition of scale...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, June 28–29, 2023
Paper Number: SPE-213783-MS
... concentration acetate tomson carboxylate bicarbonate determination wang geology hydrate inhibition bicarbonate paraffin remediation bicarbonate detection titration field application co 2 injection equation bicarbonate alkalinity measurement Introduction Mineral scale deposition is often...

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