... also performed to understand the demulsification process and mechanism. Based on the response surface method (RSM), central composite design (CCD) was used to develop the statistical model of demulsification efficiency by considering the four most influencing factors—demulsifier concentration, water...

...Brendan J. Smith; Stuart Buckingham; Daniel F. Touzel; Abigail M. Corbett; Charles Tavner Summary With atmospheric methane concentrations rising and spurring increased social concern, there is a renewed focus in the oil and gas industry on methane emission monitoring and control. In 2019, a methane...

... is 1100×10 4 g/mol. The pipeline friction results show that the drag reducer has good friction reduction and salt resistance. When the concentration in clean water is 0.06%, the maximum friction reduction rate is 71.1%. When the salinity is 5×10 4 mg/L, the calcium ion concentration is 2000 mg/L...

... could be increased ( Eng et al. 2013 ). Further, the homogeneity of the polymers could also be improved ( Guo et al. 2019 ). Other than bentonite clay, attapulgite (ATP) clay with a concentration below 10% has been mentioned to improve the hydrogel’s mechanical stability and elasticity ( Liu et al...

... molecule flow assurance upstream oil & gas equation of state co 2 hydrate hydrate growth molecular dynamics simulation concentration distribution supplementary material interaction der waal interaction h-bond si co 2 isosurface clathrate hydrate spe production algorithm supplemental...

... characterized by the solution characteristics of the petroleum residue in various solvents. The quantity and properties of asphaltenes in petroleum vary depending on the API gravity of the crude oil, source, and depth of burial, sulfur concentration, and nonasphaltene sulfur ( Koots and Speight 1975...

... size, proppant concentration, fracturing fluid viscosity, and proppant concentration ramping schedules. By investigating the impact that controlled design parameters have on perforation erosion, perforation erosion can be better anticipated to deliver improved completion results. There are two major...

... formation by manipulating the concentration of a variable in accordance with the result of the sensitivity analysis. Different classification metrics, including the accuracy, precision, F1-score, and recall, were used to compare the performance of the mentioned models. Results in the testing phase showed...

.... In this study, the synergistic effects of various IL anion and cation types and concentrations upon microwave emulsion demulsification were investigated. The interfacial tension (IFT) and zeta potential of the ILs and the distribution of oil droplets were measured before and after microwave radiation using...

... producer permeability precipitation deposition application scenario composition concentration In the current scenario of variability in oil prices and great uncertainties as to the future market for this product, oil and gas projects may have tighter profit margins than those originally...

... technology enhanced recovery efficiency contaminant injection concentration brazil government disposal conference africa government review requirement treatment technology constituent exhibition united states government asia government 8 6 2022 27 7 2022 26 7 2022 24...

... in synthetic brine containing a salt concentration of 200 000 mg/L representative of harsh field conditions in the laboratory evaluation. Coreflood tests were conducted under reservoir conditions to evaluate flowback efficiency quantified by regained permeability. To test the ability of the surfactants...

...). The paper also provides the range of CO 2 concentrations produced back to the surface and an estimate of CO 2 storage potential based on extensive compositional monitoring. The paper shares practical guidelines and recommendations to facilitate the understanding and logistics of CO 2 operations during...

...Shabeeb Alajmei; Jennifer Miskimins Summary Proppant transport in horizontal wellbores has received significant industry focus over the past decade. One of the most challenging tasks in the hydraulic fracturing of a horizontal well is to predict the proppant concentration that enters each...

...Bibian Ogbuji; A. G. Agwu Nnanna; Mark Engle; Raiel Amesquita Summary Treatment methods for produced water (PW) are significantly affected by a high concentration of total dissolved solids (TDS), a summation of dissolved organic and inorganic compositions. Understanding the constituents of TDS...

...Nana Sun; Ding Wang; Qing Quan; Lisha Shen; Huina Sun; Ruiyu Su Summary In view of the difficulties in breaking emulsions and removing oil from polymer-produced water, this study systematically analyzes the promotion effect of anion type, cation type, and concentration of ionic liquid on polymer...

... downhole intervention upstream oil & gas precipitation ct scan formic acid permeability enhancement batch reactor test solubility test acid plug flow in porous media fluid dynamics spe production aluminosilicate mineral preflush acid concentration oma main treatment acid fracture...

... flooding methods hydrate remediation modeling & simulation hydrate inhibition asphaltene inhibition adsorption isotherm water cut degradation wax inhibition asphaltene remediation remediation of hydrates concentration viscosity spe production oilfield chemistry scale inhibition scale...

... out as a water-reject (underflow) stream, and concentrated oil comes out as an oil-reject (overflow) stream. For control purposes, the pressure drop ratio (PDR) across the inlet and the two outlets may be kept constant to maintain separation in the presence of disturbances. However, the PDR control...

... followed by its displacement with crude oil can be sufficient in the case of short flowlines of onshore fields. Selection of initial reactant concentration and pH has to be done judiciously based on the maximum allowed temperature in the flowline and the desired extent of chemical utilization...