• gelation of emulsified polyacrylamide/polyethylenimine

    Gelation of Emulsified Polyacrylamide/Polyethylenimine

    Emulsified gels are proposed as a method of water shut-off in oil and gas reservoirs and are designed to separate into a water phase and an oil phase under reservoir conditions. A first of its kind rheological study on the gelation kinetics and strength of organically cross-linked polyacrylamide (PAM) with polyethylenimine (PEI) emulsified into a diesel phase is presented. A lower rate of

  • gelation of emulsified polyacrylamide / polyethylenimine

    Gelation of Emulsified Polyacrylamide / Polyethylenimine

    The gelation kinetics of the emulsified PAM/PEI is analyzed using Avrami based model. The activation energy for emulsified gels was found to be ~ 10 times higher than non-emulsified gels. High

  • rheological monitoring of polyacrylamide gelation

    Rheological Monitoring of Polyacrylamide Gelation

    2004-09-03· In situ Dynamic Rheological Study of Polyacrylamide during Gelation Coupled with Mathematical Models of Viscosity Advancement. Macromolecular Materials and Engineering 2009, 37, n/a-n/a. DOI: 10.1002/mame.200900218. Suzan Abdurrahmanoglu, Volkan Can, Oguz Okay. Design of high-toughness polyacrylamide hydrogels by hydrophobic modification.

  • delayed gelation of polyacrylamide/modified

    Delayed gelation of polyacrylamide/modified

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  • (2) gelation kinetics of pam/pei system: dsc investigation

    (2) Gelation Kinetics of PAM/PEI System: DSC Investigation

    The gelation kinetics and gel strength of the organically cross-linked polyacrylamide (PAM) with polyethyleneimine (PEI) emulsified into diesel is studied, we believe that this is the first

  • gelation of emulsified polyacrylamide/polyethylenimine

    Gelation of Emulsified Polyacrylamide/Polyethylenimine

    A first of its kind rheological study on the gelation kinetics and strength of organically cross-linked polyacrylamide (PAM) with polyethylenimine (PEI) emulsified into a diesel phase is presented. A lower rate of cross-linking is achieved when emulsified PAM/PEI systems are compared with nonemulsified PAM/PEI systems. For the stable emulsified

  • delayed gelation of polyacrylamide/modified

    Delayed gelation of polyacrylamide/modified

    We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services.

  • rheological monitoring of polyacrylamide gelation

    Rheological Monitoring of Polyacrylamide Gelation

    2004-09-03· In situ Dynamic Rheological Study of Polyacrylamide during Gelation Coupled with Mathematical Models of Viscosity Advancement. Macromolecular Materials and Engineering 2009, 37, n/a-n/a. DOI: 10.1002/mame.200900218. Suzan Abdurrahmanoglu, Volkan Can, Oguz Okay. Design of high-toughness polyacrylamide hydrogels by hydrophobic modification.

  • new insights into the gelation behavior

    New Insights into the Gelation Behavior

    Using polymer gel is still the mainstream technique of the chemical method for water shut-off in mature oilfield development. The gelation performance of polyethyleneimine (PEI) cross-linking partially hydrolyzed polyacrylamide (HPAM) gel was systematically investigated in this paper by using three types of molecular weight (Mw) HPAM. Results show that the gelant solution (the fluid solution

  • gelation of emulsified polyacrylamide/polyethylenimine

    Gelation of Emulsified Polyacrylamide/Polyethylenimine

    A first of its kind rheological study on the gelation kinetics and strength of organically cross-linked polyacrylamide (PAM) with polyethylenimine (PEI) emulsified into a diesel phase is presented. A lower rate of cross-linking is achieved when emulsified PAM/PEI systems are compared with nonemulsified PAM/PEI systems. For the stable emulsified

  • dsc investigation of the gelation kinetics of emulsified

    DSC investigation of the gelation kinetics of emulsified

    The gelation kinetics and gel strength of the organically cross-linked polyacrylamide (PAM) with polyethyleneimine (PEI) emulsified into diesel is studied, we believe that this is the first

  • thermal gelation of partially hydrolysed polyacrylamide

    Thermal gelation of partially hydrolysed polyacrylamide

    In this paper, a statistical analysis on the thermal gelation of well characterized reactants namely partially hydrolysed polyacrylamide (PHPA) (Mw = 5.1 million Daltons and hydrolysis degree = 6%

  • dsc investigation of the gelation kinetics of emulsified

    DSC investigation of the gelation kinetics of emulsified

    2015-12-01· Read "DSC investigation of the gelation kinetics of emulsified PAM/PEI system, Journal of Thermal Analysis and Calorimetry" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • gelation study on a hydrophobically associating polymer

    Gelation Study on a Hydrophobically Associating Polymer

    A gel system has been widely used in many mature oilfields for water shut-off treatment. In the present study, the hydrophobically associating polymer (HAP) was cross-linked with the polyethylenimine (PEI) to form a HAP/PEI gel system which contains 0.35 wt % HAP and 0.60 wt % PEI. Gelation behaviors of the HAP/PEI gel formed in bottle and in core were studied, respectively. Results show that

  • structure–property relationships of the thermal gelation

    Structure–property relationships of the thermal gelation

    Abstract. In this work, the structure–property relationships of the thermal gelation of partially hydrolyzed polyacrylamide (PHPA) and polyethylenimine (PEI) mixtures were investigated under realistic conditions of temperature (80 °C) and salinity (total dissolved solids = 3.4 g/l) of the Algerian reservoir (Tin Fouyé Tabankort) prior to a conformance control application.

  • review of recent advances in polyethylenimine

    Review of recent advances in polyethylenimine

    2019-01-23· Several crosslinked polymer gels have been developed over the last 5 decades to address the different technical challenges in oil reservoirs especially conformance control operations. Among these systems, polyethylenimine (PEI) crosslinked polymer gels, which have gained a huge interest thanks to their eco-friendly aspect and thermal stability at extremely high temperatures.

  • stability of pam/pei emulsified gels under hths

    Stability of PAM/PEI emulsified gels under HTHS

    2018-12-19· The emulsification reduces both the gel strength and the gelation rate. The cross-linking (gelation) rate in the unemulsified PAM/PEI is almost ten times higher than that in the emulsified gels. This gelation process is slow in the case of stable emulsified PAM/PEI solution and is believed to be the result of limited heat and mass transfer. The

  • development of pickering emulsified polymeric gel system

    Development of pickering emulsified polymeric gel system

    In this research work, the water-in-oil emulsion was prepared using two polymers. The polymers namely Polyacrylamide (PAM) and Polyethylenimine (PEI). The PAM is in powdered form, which is supplied from SNF Floerger, France and PEI is in solution form (50% aqueous solution) having a molecular weight of 43.069 g/Mol, supplied from MPI

  • dsc investigation of the gelation kinetics of emulsified

    DSC investigation of the gelation kinetics of emulsified

    2015-08-23· Breaking of the emulsion and the subsequent gelation is a function of temperature, time, salinity of mixing water, and concentration of the various components, including surfactants and salts. The gelant was prepared by mixing polyacrylamide (PAM) with a mixing brine and then adding polyethylenimine (PEI) as a cross-linker. Diesel and a

  • impact of salts on polyacrylamide hydrolysis and gelation

    Impact of salts on polyacrylamide hydrolysis and gelation

    2014-07-15· Polyacrylamide (PAM) and its derivatives are the most commonly used polymers in the preparation of polymeric gels for water control in petroleum reservoirs. This study involved the use of polyethylenimine (PEI) as a crosslinker for PAM. In this study, we investigated PAM alkaline hydrolysis at high temperatures.

  • gelation article about gelation by the free dictionary

    Gelation Article about Gelation by The Free Dictionary

    Gelation is often observed and plays an important role in many natural and manufacturing processes. The liquid layer of a paint, lacquer, glue, or photographic emulsion gelates before finally drying. Gelation occurs upon the introduction of electrolytes into rubber latex, during the hardening of synthetic resins in the manufacture of plastics

  • gelation of oil-in-water emulsions stabilized by whey

    Gelation of oil-in-water emulsions stabilized by whey

    The most common way to gel oil-in-water emulsions stabilized by whey similar way called hydrogel or hydrogel-filled were used as control in order to evaluate the effect of oil phase on the gelation process. Emulsion gels were prepared by the addition of GDL directly to the stock emulsion under magnetic stirring for 2 min. Emulsion-filled gels were prepared by the dispersion of stock

  • an optimization study of polyacrylamide

    An Optimization Study of Polyacrylamide

    3.1.1. Gelation Time. The experimental results as shown in contour and 3D response surface plots (Figure 3) indicate the relationship between gelation time, as a function of polyacrylamide and polyethylenimine concentrations.The gelation time is crucial because it is used in oilfield applications to determine the ability of PAM/PEI polymer gelant to travel deeper through the reservoir.

  • effects of divalent cations, seawater, and formation brine

    Effects of divalent cations, seawater, and formation brine

    Polyacrylamide crosslinked with Cr(III) is a common blocking agent that is injected into oil reservoirs to shut off the water flow to features such as fractures and high‐permeability rock to improve the volumetric sweep efficiency during water flooding. This technique is limited to situations where enough gelant can be injected to fill the high‐permeability zones before gelation occurs. Cr

  • hydrolyzed polyacrylamide- polyethylenimine-

    HYDROLYZED POLYACRYLAMIDE- POLYETHYLENIMINE-

    HYDROLYZED POLYACRYLAMIDE- POLYETHYLENIMINE- DEXTRAN SULFATE POLYMER GEL SYSTEM AS A WATER SHUT-OFF AGENT IN UNCONVENTIONAL GAS RESERVOIRS A Thesis by SWATHIKA JAYAKUMAR Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2012 Major Subject: Petroleum Engineering . Hydrolyzed Polyacrylamide

  • dr. abdullah sultan cpg

    Dr. Abdullah Sultan CPG

    Dr. Sultan is an Associate Professor in the Department of Petroleum Engineering. His research group focuses on complex and reactive fluids to address problems in the oil and gas industry with a focus on enhanced oil/gas recovery, drilling fluids, well stimulation, gel, emulsions, and flow assurance.

  • impact of salts on polyacrylamide hydrolysis and gelation

    Impact of salts on polyacrylamide hydrolysis and gelation

    Polyacrylamide (PAM) and its derivatives are the most commonly used polymers in the preparation of polymeric gels for water control in petroleum reservoirs. This study involved the use of polyethylenimine (PEI) as a crosslinker for PAM. In this study, we investigated PAM

  • effects of divalent cations, seawater, and formation brine

    Effects of divalent cations, seawater, and formation brine

    Polyacrylamide crosslinked with Cr(III) is a common blocking agent that is injected into oil reservoirs to shut off the water flow to features such as fractures and high‐permeability rock to improve the volumetric sweep efficiency during water flooding. This technique is limited to situations where enough gelant can be injected to fill the high‐permeability zones before gelation occurs. Cr

  • an optimization study of polyacrylamide

    An Optimization Study of Polyacrylamide

    3.1.1. Gelation Time. The experimental results as shown in contour and 3D response surface plots (Figure 3) indicate the relationship between gelation time, as a function of polyacrylamide and polyethylenimine concentrations.The gelation time is crucial because it is used in oilfield applications to determine the ability of PAM/PEI polymer gelant to travel deeper through the reservoir.

  • gelation definition of gelation by the free dictionary

    Gelation definition of gelation by The Free Dictionary

    Polymer gel is not limited in improving oil recovery, but it also has other beneficial traits over other methods, such as controllable gelation time, adjustable gel strength, the flexibility for pumping without a work-over rig, in-depth penetration, long effective time, low cost, and easy to remove from the wellbore by water recirculation [11, 13-15].

  • influence of polymer structure on the gelation kinetics

    Influence of polymer structure on the gelation kinetics

    This study aimed to investigate the influence of the polymer structure [molecular weight, acrylate, 2‐acrylamido‐2‐methylpropane sulfonic acid (AMPS), and/or N‐vinyl‐2‐pyrrolidone (NVP) moieties] on the gelation kinetics of gelling systems based on homopolymers and copolymers of acrylamide, natural bentonite and polyethylenimine for

  • an optimization study of polyacrylamide- polyethylenimine

    An Optimization Study of Polyacrylamide- Polyethylenimine

    formulation. Concentrations of two main raw materials, namely, polyacrylamide (PAM) and polyethylenimine (PEI), were varied in a suitable range. This was to obtain the formulation with the desirable two vital responses, which are viscosity and gelation time. It was found that the results fitted the quadratic equation. Statistically, the

  • ghaithan a. al-muntasheri scinapse

    Ghaithan A. Al-Muntasheri Scinapse

    Emulsified gels are proposed as a method of water shut-off in oil and gas reservoirs and are designed to separate into a water phase and an oil phase under reservoir conditions. A first of its kind rheological study on the gelation kinetics and strength of organically cross-linked polyacrylamide (PAM) with polyethylenimine (PEI) emulsified into

  • evaluation of terpolymer-gel systems crosslinked

    Evaluation of Terpolymer-Gel Systems Crosslinked

    Summary A terpolymer-gel system using low toxic polyethylenimine (PEI) as the crosslinker was developed for conformance improvement in high-temperature reservoirs. Suitable gelation time (GT), gel strength, and thermal stability could be obtained by

  • a study of polyacrylamide-based gels crosslinked with

    A Study of Polyacrylamide-Based Gels Crosslinked With

    Most of these gels consist of a polyacrylamide-based polymer and an organic crosslinker. Polyethyleneimine (PEI) has been used as an organic crosslinker for polyacrylamide tertiary butyl acrylate (PAtBA) copolymer. Literature reported that PEI can also form ringing gels with polyacrylamide (PAM) copolymers in addition to simple PAM homopolymers.

  • review of recent advances in polyethylenimine

    Review of recent advances in polyethylenimine

    Several crosslinked polymer gels have been developed over the last 5 decades to address the different technical challenges in oil reservoirs especially conformance control operations. Among these...

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