shear effects on polyacrylamide chromium acetate senegal

shear effects on polyacrylamide/chromium (iii) acetate

Shear Effects on Polyacrylamide/Chromium (III) Acetate

The work reported in this paper consists of a series of viscosity, storage modulus, and yield stress measurements carried out with two different polyacrylamide/chromium (III) acetate formulations. The purpose of these measurements is to quantitatively characterize the gelation kinetics and final gel strength of gels formed under various

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shear effects on polyacrylamide/chromium (iii) acetate

Shear Effects on Polyacrylamide/Chromium (III) Acetate

Request PDF | Shear Effects on Polyacrylamide/Chromium (III) Acetate Gelation | In practice, gel formulations used in water shutoff and conformance improvement treatments are subjected to hours of

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effect of shear on gelation of polyacrylamide-chromium

Effect of Shear on Gelation of Polyacrylamide-Chromium

This research studies the gelation and flow properties of a partially hydrolyzed polyacrylamide (HPAM)-chromium acetate gel system under shear conditions. Gelation was observed in steady shear on a rheometer and during injection through a 1,031-ft long stainless steel tubing.

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the effects of shear history on the gelation of

The Effects of Shear History on the Gelation of

The Effects of Shear History on the Gelation of Polyacrylamide/Chromium VI Thiourea Solutions

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effect of shear on flow properties during placement and on

Effect of shear on flow properties during placement and on

Effect of shear on flow properties during placement and on syneresis after placement of a polyacrylamide-chromium acetate gelant Stan McCool, Li Xianping , G. Paul Wilhite Research output : Contribution to journal › Conference article › peer-review

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flow of a polyacrylamide/chromium acetate system in a long

Flow of a polyacrylamide/chromium acetate system in a long

Flow experiments were conducted to determine the effect of shear on the flow properties of the gelant for durations greater than the bulk gel time. In-line-mixed gelant was injected through a 1,031-ft-long tube to simulate a fracture treatment.

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colloidal dispersion gels based on sulfonated polyacrylamide

Colloidal dispersion gels based on sulfonated polyacrylamide

Therefore, in this research sulfonated polyacrylamide and Cr3+ were used for preparation of CDGs. In this regards, a series of SPA/ chromium triacetate CDGs were prepared and effects of parame-ters such as polymer concentrations, crosslinker/polymer ratio and salinity on their flow behaviors as well as their size distribution were studied.

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(pdf) physico-chemical properties and protein profiling of

(PDF) Physico-chemical properties and protein profiling of

Five percent solution of A. senegal, Sudan (ICAR-CAZRI, Jodhpur) displayed fairly high cP value (509.45) and exhibited non-Newtonian shear thinning / pseudoplastic characteristics.

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rheological monitoring of polyacrylamide gelation: importance

Rheological Monitoring of Polyacrylamide Gelation: Importance

cross-linked with chromium acetate cross-linker (Cr3+), using a Couette geometry at low-amplitude strain, constant-frequency oscillatory shear, and at 70 °C. They showed that the final elastic and the viscous moduli increase with polymer concentration according to a power-law relationship. Kulicke and Nottelmann21 used

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polyacrylamide gel polymer as water shut-off system

Polyacrylamide Gel Polymer as Water Shut-off System

ABSTRACT: In this paper, polyacrylamide/chromium acetate gel polymer system was prepared as water shut-off system to control water production in one of the Iranian oil reservoirs condition. Effect of various parameters such as temperature (90 °C) and water formation from view point of

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colloidal dispersion gels based on sulfonated polyacrylamide

Colloidal dispersion gels based on sulfonated polyacrylamide

Therefore, in this research sulfonated polyacrylamide and Cr3+ were used for preparation of CDGs. In this regards, a series of SPA/ chromium triacetate CDGs were prepared and effects of parame-ters such as polymer concentrations, crosslinker/polymer ratio and salinity on their flow behaviors as well as their size distribution were studied.

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experimental research on amphiphilic polymer/organic chromium

Experimental research on amphiphilic polymer/organic chromium

Effect of the chromium ion diffusion in polyacrylamide/chromium acetate gelation system with surrounding water on gelation behavior J. Pet. Sci. Eng. , 171 ( 2018 ) , pp. 1067 - 1076 Article Download PDF View Record in Scopus Google Scholar

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a polyacrylamide hydrogel for application at high temperature

A polyacrylamide hydrogel for application at high temperature

Broseta D, Marquer O, Blin N, Zaitoun A (2000) Rheological screening of low-molecular-weight polyacrylamide/chromium (III) acetate water shutoff gels. Paper SPE 59319, SPE/DOE improved oil recovery symposium, Tulsa. 24. Itskov M, Knyazeva A (2016) A rubber elasticity and softening model based on chain length statistics. Int J Solid Struct 80

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precipitation of chromium acetate solutions | request pdf

Precipitation of Chromium Acetate Solutions | Request PDF

Polyacrylamide-chromium acetate is a commonly used gel system. the effects of pH, temperature, salinity, acetate ligand concentration, and salt type on chromium precipitation were studied

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investigation of rheological properties of a school of

Investigation of Rheological Properties of a School of

In this research, polyacrylamide-based gels were made at 25 C and aged in an oven at 90 C for 24 hours. The bottle testing results indicated that gel composed of 15000ppm partially hydrolyzed polyacrylamide (PHPA) and 2500ppm chromium(III) acetate exhibited an acceptable strength.

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effect of dynamic gelation of polymer gel in porous media

Effect of Dynamic Gelation of Polymer Gel in Porous Media

Based on the systems of HPAM/ phenol formaldehyde resin (PFR), the dynamic gelation process in porous media was studied in an unconsolidated sandpack of the circulating device. The results showed that dynamic gelation time was much longer than static gelation time in ampoule bottle and porous media. With permeability increasing or injected

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experimental research on amphiphilic polymer/organic chromium

Experimental research on amphiphilic polymer/organic chromium

Effect of the chromium ion diffusion in polyacrylamide/chromium acetate gelation system with surrounding water on gelation behavior J. Pet. Sci. Eng. , 171 ( 2018 ) , pp. 1067 - 1076 Article Download PDF View Record in Scopus Google Scholar

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effect of silica nanoparticle size on the mechanical strength

Effect of silica nanoparticle size on the mechanical strength

In this study, various concentrations and size of silica nanoparticles are introduced into the sulfonated polyacrylamide (SPAM)/chromium (III) acetate system to produce a nanocomposite with

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development of a novel fly ash-polyacrylamide nanocomposite

Development of a novel fly ash-polyacrylamide nanocomposite

Results from the bottle tests for nano fly ash -polyacrylamide-chromium (III) acetate nanocomposite hydrogel system are presented in the form of phase diagram in Fig. 6. The several tests were conducted with different nanocomposite copolymer (containing 2000 ppm of nano fly ash) concentrations (3000, 4000, 5000, 7000, 8000, 9000, 10,000 ppm

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crosslink nature in cr(iii)‐polyacrylamide gels - te

Crosslink nature in Cr(III)‐polyacrylamide gels - te

J. Aalaie, E. Alvand, M. Hemmati, V. A. Sajjadian, Preparation and probing of the steady shear flow and viscoelastic properties of weakly crosslinked hydrogels based on sulfonated polyacrylamide for oil recovery applications, Polymer Science Series A, 10.1134/S0965545X15050016, 57, 5, (680-687), (2015).

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spe/doe

SPE/DOE

chromium acetate or chromium chloride) were injected (at 15.7 ft/d) to displace brine. (These solutions did not contain polymer.) The effluent from corefloods was analyzed for chromium using atomic absorption spectrometry. Fig. 1 plots the chromium concentration in the effluent relative to the injected chromium concentration.

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development of conformance gel for diadema oil field using

Development of Conformance Gel for Diadema Oil Field using

Two gel formulations using Chromium (III) acetate as crosslinker and partially hydrolyzed polyacrylamide either under its powder or its reverse emulsion version were developed to fit field conditions targeting a gel D category according to Sydansk classification and a gel time below 36 hours.

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impact of permeability and lithology on gel performance

Impact of Permeability and Lithology on Gel Performance

chromium acetate or chromium chloride) were injected (at 15.7 ft/d) to displace brine. (These solutions did not contain polymer.) The effluent from corefloods was analyzed for chromium using atomic absorption spectrometry. Fig. 1 plots the chromium concentration in the effluent relative to the injected chromium concentration.

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rheological and swelling behavior of semi‐interpenetrating

Rheological and swelling behavior of semi‐interpenetrating

Preparation and characterization of novel semi‐interpenetrating polymer network (semi‐IPN) hydrogels based on partially hydrolyzed polyacrylamide (HPAM) and scleroglucan solution crosslinked with chromium triacetate are described. Effects of scleroglucan concentration on the gelation process and swelling behavior of synthesized hydrogels in

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