Vermiculite/polyacrylamide copolymers microspheres for profile control in oilfields
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Polymer Science"
DOI: 10.1002/app.44918
Abstract: Polyacrylamide copolymers (PAMVT) microspheres were prepared through inverse emulsion polymerization by using acrylic acid (AA), 2-acrylamido-2-methylpropane sulfonic acid (AMPS) as functional monomers, N,N′-methylene bis-acrylamide (MBA) as cross-linker and modified vermiculite (MVMT) with the single-factor experiments.… read more here.
Keywords: copolymers microspheres; polyacrylamide copolymers; vermiculite polyacrylamide; profile control ... See more keywords
Preparation of poly(acrylamide‐co‐acrylic acid)/silica nanocomposite microspheres and their performance as a plugging material for deep profile control
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Polymer Science"
DOI: 10.1002/app.45502
Abstract: In this work, poly(acrylamide-co-acrylic acid)/silica [poly(AM-co-AA)/SiO2] microspheres were prepared by inverse phase suspension polymerization in the presence of γ-3-(trimethoxysilyl) propyl methacrylate (or 3-methacryloxypropyltrimethoxysilane) modified SiO2. The effects of SiO2 nanoparticles on tuning morphology and properties… read more here.
Keywords: poly acrylamide; profile control; nanocomposite microspheres;
Theoretical study on profile control of a nano-microparticle dispersion system based on fracture–matrix dual media by a low-permeability reservoir
Sign Up to like & getrecommendations! Published in 2021 at "Energy Reports"
DOI: 10.1016/j.egyr.2021.01.089
Abstract: Abstract In recent years, nano-microparticle dispersion systems have been frequently applied in enhanced oil recovery (EOR) in the low-permeability reservoirs. However, clarification of the profile control process of nano-microparticle has become the focus of this… read more here.
Keywords: profile control; fracture matrix; permeability; microparticle ... See more keywords
Plasma internal profile control using IDA-PBC: Application to TCV
Sign Up to like & getrecommendations! Published in 2017 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2017.02.074
Abstract: Abstract In this paper, new results of plasma ι-profile and β control on TCV, using total plasma current Ip, and ECCD (Electron Cyclotron heating and Current Drive) heating source have been discussed. The control model… read more here.
Keywords: profile control; control; tcv; plasma internal ... See more keywords
Optimal current profile control for enhanced repeatability of L-mode and H-mode discharges in DIII-D
Sign Up to like & getrecommendations! Published in 2017 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2017.03.022
Abstract: Abstract In this work, model-based control techniques are used to obtain target current profiles in low-confinement-mode (L-mode) as well as high-confinement-mode (H-mode) DIII-D discharges. The control problem is formulated as a trajectory optimization problem to… read more here.
Keywords: current profile; mode; profile control; mode mode ... See more keywords
Characteristics of composite microspheres for in-depth profile control in oilfields and the effects of polymerizable silica nanoparticles
Sign Up to like & getrecommendations! Published in 2020 at "Powder Technology"
DOI: 10.1016/j.powtec.2019.09.070
Abstract: Abstract Polymer/nano-SiO2 composite microspheres (PNSCMs) were synthesized via inverse suspension polymerization with 3-methacryloxypropyltrimethoxysilane (MPS) modified SiO2 as the reinforcing filler. The influences of these polymerizable nanoparticles on the swelling behavior, mechanical property, thermal stability, viscoelasticity… read more here.
Keywords: profile control; depth profile; characteristics composite; composite microspheres ... See more keywords
Development and Performance Evaluation of a High-Temperature Profile Control System
Sign Up to like & getrecommendations! Published in 2020 at "ACS Omega"
DOI: 10.1021/acsomega.0c02642
Abstract: In the late stage of the steam flooding development of heavy oil reservoirs, the contradiction between layers is prominent, which makes the development of the reservoir difficult. To obtain a profile control agent suitable for… read more here.
Keywords: agent; control; profile control; control system ... See more keywords
Experimental Study on Enhanced Oil Recovery Method in Tahe High-Temperature and High-Salinity Channel Sand Reservoir: Combination of Profile Control and Chemical Flooding
Sign Up to like & getrecommendations! Published in 2020 at "ACS Omega"
DOI: 10.1021/acsomega.9b03306
Abstract: On account of the intralayer and interlayer heterogeneity, high temperature (110 °C), and high salinity (224,919 mg/L) of Tahe channel sand reservoir, single profile control or chemical flooding cannot greatly enhanced oil recovery. The goal… read more here.
Keywords: profile control; control; high temperature; combination profile ... See more keywords
Preparation of magnetic polymer nanosphere and its profile control
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Dispersion Science and Technology"
DOI: 10.1080/01932691.2019.1593860
Abstract: Abstract Fe3O4 nanoparticles with a particle size of approximately 16.5 nm were prepared by the chemical coprecipitation method with the raw materials of ferric chloride, ferrous chloride, and sodium hydroxide. The optimum reaction conditions were determined… read more here.
Keywords: preparation magnetic; profile control; polymer; polymer nanospheres ... See more keywords
Novel in-depth profile control agent based on in-situ polymeric microspheres in low permeability reservoir
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Dispersion Science and Technology"
DOI: 10.1080/01932691.2019.1699423
Abstract: Abstract To solve the contradiction between the injectability of the profile control agent and its profile control ability in low-permeability reservoirs, a novel in-situ polymeric microsphere profile control agent is proposed. In-situ-polymeric microsphere (ISPM) emulsion… read more here.
Keywords: profile control; control; control agent; low permeability ... See more keywords
Starch graft copolymer and polymer gel applied in Bohai oilfield for water plugging and profile control and their mechanisms
Sign Up to like & getrecommendations! Published in 2020 at "Geosystem Engineering"
DOI: 10.1080/12269328.2020.1732838
Abstract: ABSTRACT Water plugging and profile control are becoming increasingly important in water-flooding oilfields. In this study, the experiments were conducted to determine the microscopic mechanisms and effects of water plugging, profile control, and ‘water plugging… read more here.
Keywords: plugging profile; water; profile control; water plugging ... See more keywords