hydrolysis and thermal stability of partially hydrolyzed

Hydrolysis and thermal stability of partially hydrolyzed

Partially hydrolyzed polyacrylamide (HPAM) is the water‐soluble polymer most often used in flooding applications in the petroleum industry. However, in aqueous solutions at high temperatures, HPAM undergoes hydrolysis of the lateral amide groups, and the presence of salts in the solution can lead to precipitation of this polymer.

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catálogo de fabricantes de hpam poliacrilamida

Catálogo de fabricantes de Hpam Poliacrilamida

Encuentre los fabricantes de Hpam Poliacrilamida Parcialmente Hidrolizada de alta calidad, proveedores de Hpam Poliacrilamida Parcialmente Hidrolizada y productos Hpam Poliacrilamida Parcialmente Hidrolizada al mejor precio en Alibaba.com

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what is partially hydrolyzed polyacrylamide (phpa

What is Partially Hydrolyzed Polyacrylamide (PHPA

Partially hydrolyzed polyacrylamide (PHPA) is a widely used polymer in the oil and gas industry due to its lesser cost and good water solubility. PHPA is used as a functional additive in water-based drilling fluids. The PHPA mud system stabilizes shale formations and influences cuttings and wellbore stability.

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synthesis and characterization of partially hydrolyzed

Synthesis and characterization of partially hydrolyzed

High‐molecular‐weight partially hydrolyzed polyacrylamide nanocomposite (HPAMNC) weak gels were synthesized and evaluated for their flooding behaviors in oil‐recovery applications. The structure, morphology, and properties of the obtained HPAMNC samples and their weak gels were characterized by X‐ray diffraction (XRD), transmission

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synthesis of partially hydrolyzed polyacrylamide

Synthesis of partially hydrolyzed polyacrylamide

Synthesis of partially hydrolyzed polyacrylamide and investigation of solution properties (Viscosity Behaviour) Article (PDF Available) in Iranian Polymer Journal 13(6):479-484 · November 2004

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polyacrylamide degradation and its implications

Polyacrylamide degradation and its implications

Al Hashmi, A. R. et al. Rheology and mechanical degradation of high-molecular-weight partially hydrolyzed polyacrylamide during flow through capillaries. J. Pet. Sci. Technol. Eng. 105, 100–106

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synthesis of hydrogel nanocomposites based on partially

Synthesis of Hydrogel Nanocomposites Based on Partially

Partially hydrolyzed polyacrylamide (HPAM) with an average molecular weight of 8 × 10 6 g/mol (hydrolysis degree of 30%) was provided by SNF FLOERGER, with trade name FP3330S. Branched polyethyleneimine (PEI) with an average molecular weight of 25.000 g/mol was purchased from Sigma-Aldrich to work as an organic cross-linker.

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drag reduction behavior of hydrolyzed polyacrylamide

Drag reduction behavior of hydrolyzed polyacrylamide

Partially hydrolyzed polyacrylamide (HPAM) as the main component of slickwater fracturing fluid is a shear-sensitive polymer, which suffers from mechanical degradation at turbulent flow rates. Five different concentrations of HPAM as well as mixtures of polyacrylamide/xanthan gum were prepared to investigate the possibility of improving shear stability of HPAM.

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a review of the application of biopolymers on geotechnical

A Review of the Application of Biopolymers on Geotechnical

For EOR, partially hydrolyzed polyacrylamide (HPAM) solution with 0.5 wt.% NaOH showed a better sweep efficiency than polymer flood . In wastewater treatment, a low cationic polyacrylamide (4 mg/L PAM) to high rate algal pond (HRAP) treating wastewater in New Zealand achieved at least 50% improvement of total suspended solid (TSS) removal [ 39 ].

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preparation and performance evaluation of alkali-resistant

Preparation and Performance Evaluation of Alkali-resistant

Currently, most profile control agents would be degraded in strong alkaline condition. They could not be applied in ASP (alkaline, surfactant and partially hydrolyzed polyacrylamide) flooding. To solve this problem, a new kind of alkali-resistant gel for deep profile has been studied.

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inverse emulsion polymerization for the synthesis of high

Inverse Emulsion Polymerization for the Synthesis of High

EBSCOhost serves thousands of libraries with premium essays, articles and other content including Inverse Emulsion Polymerization for the Synthesis of High Molecular Weight Polyacrylamide and Its Application as Sand Stabilizer. Get access to over 12 million other articles!

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industrial polyacrylamide by shijiazhuang kunmai chemical

Industrial Polyacrylamide by Shijiazhuang Kunmai Chemical

Industrial Polyacrylamide (1.0) partially hydrolyzed polyacrylamide, phpa for eor and drilling in oil field, bwd-01 water decoloring agent, for color removal for effluent from textile a brief, high processing efficiency, can control the space is large, etc. PH value is too low, acid easily provoked explosion together, constitute a

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role of chemical additives and their rheological

Role of chemical additives and their rheological

Levitt D, Jackson A, Heinson C, Britton LN, Malik T, Dwarakanath V, Pope GA. Identification and evaluation of high-performance EOR surfactants. SPE Reservoir Eval Eng 2009; 12: 243–253. Lewandowska K. Comparative studies of rheological properties of polyacrylamide and partially hydrolyzed polyacrylamide solutions.

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z-99 successful pilot project of water conformance in a

Z-99 Successful Pilot Project of Water Conformance in a

This conformance improvement project began in 2002 with laboratory studies, initial polymer gel treatment design, tracer studies and numerical simulation. The gel chemistry included a medium molecular weight, partially hydrolyzed anionic polyacrylamide polymer crosslinked with chromium triacetate.

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polymer injectivity: investigation of mechanical

Polymer Injectivity: Investigation of Mechanical

Water soluble polymers have attracted increasing interest in enhanced oil recovery (EOR) processes, especially polymer flooding. Despite the fact that the flow of polymer in porous medium has been a research subject for many decades with numerous publications, there are still some research areas that need progress. The prediction of polymer injectivity remains elusive.

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oil mud chemicals, oil mud chemicals suppliers & oil mud

Oil Mud Chemicals, Oil Mud Chemicals Suppliers & Oil Mud

Find Oil mud chemicals Manufacturers, Oil mud chemicals Suppliers & Wholesalers of Oil mud chemicals from China, Hong Kong, USA & Oil mud chemicals Products from India at TradeKey.com

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biocatalytic degradation efficiency of postconsumer

Biocatalytic Degradation Efficiency of Postconsumer

1 Introduction. The global annual production of plastics has been estimated to reach 348 million tons (Mt.) in 2017, 1 of which 90% was produced from fossil fuels. 2 Packaging is the largest application sector making up close to 40% of the total plastics demand. 1 The short‐lived, disposable packaging materials greatly contribute to the municipal solid waste and marine anthropogenic litter

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a novel halophilic lipase, lipbl, showing high efficiency

A Novel Halophilic Lipase, LipBL, Showing High Efficiency

Microorganisms, media, inocula preparation and plasmids. Marinobacter lipolyticus SM19 (DSM 15157) was isolated from a saline soil in Cádiz, Spain (36° 27′ 06,90″N, 6° 12′ 07,60″O) .. This strain was grown in a saline medium (SW-7.5) with a total salt mixture concentration of 7.5% (w/v) supplemented with 0.5% (w/v) yeast extract .The medium was adjusted to pH 7.4, prior to

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1. introduction

1. Introduction

Polyacrylamide (PAM) is a water-soluble polymer, and Figure 5 shows the structure unit of PAM polymer. PAM is widely used for EOR, water treatment, and soil amendment effects because PAM is more effective and relatively inexpensive [36 – 38].For EOR, partially hydrolyzed polyacrylamide (HPAM) solution with 0.5 wt.% NaOH showed a better sweep efficiency than polymer flood [37].

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preparation and performance evaluation of alkali-resistant

Preparation and Performance Evaluation of Alkali-resistant

According to experimental result, the composition of the alkali-resistant profile agent was as follows: partially hydrolyzed polyacrylamide: Mw=25000000, 1800~2000 mg/L; metallic crosslinking agent: 0.15% chromium acetate; organic crosslinking agents: 0.1% phenol and 0.08% methyl aldehyde; 0.2% NaCl.

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colloids and interfaces | free full-text | polymer flow

Colloids and Interfaces | Free Full-Text | Polymer Flow

Polymer flooding is one of the most successful chemical EOR (enhanced oil recovery) methods, and is primarily implemented to accelerate oil production by sweep improvement. However, additional benefits have extended the utility of polymer flooding. During the last decade, it has been evaluated for use in an increasing number of fields, both offshore and onshore.

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analysis and prevention of microplastics pollution

Analysis and Prevention of Microplastics Pollution

1. Introduction. The term “microplastic” (MP) was formally introduced in 2004 by Thompson et al., 1 who alerted to the growing problem of the plastic release to the seas. Since then, its presence in the environment has gained an increasing attention among the scientists, authorities, general population, and in the media. 2 Although neither official definition or full agreement within the

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z-99 successful pilot project of water conformance in a

Z-99 Successful Pilot Project of Water Conformance in a

This conformance improvement project began in 2002 with laboratory studies, initial polymer gel treatment design, tracer studies and numerical simulation. The gel chemistry included a medium molecular weight, partially hydrolyzed anionic polyacrylamide polymer crosslinked with chromium triacetate.

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the effect of 1,6-hexamethylenediamine on thermal

The effect of 1,6-hexamethylenediamine on thermal

The capability of drilling fluid to endure high temperature and stabilize shale cuttings is important characteristics of drilling fluids. In this work, a combination of 1,6-hexamethylenediamine and polyanionic cellulose (PAC) was tested to observe the impact of 1,6-hexamethylenediamine on thermal stability of PAC and its influence on the shale cutting stability of drilling fluid.

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partially hydrolyzed polyacrylamides

partially hydrolyzed polyacrylamides

High molecular weight partially hydrolyzed polyacrylamide (PAM) can be bio-hydrolyzed on the amide side group, however, solid evidence regarding the biological cleavage of its main carbon chain backbone is limited. In this study, viscometry, flow field-flow fractionation multi-angle light scattering (FFF-MALS), and attenuated total reflectance

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a novel halophilic lipase, lipbl, showing high efficiency

A Novel Halophilic Lipase, LipBL, Showing High Efficiency

Microorganisms, media, inocula preparation and plasmids. Marinobacter lipolyticus SM19 (DSM 15157) was isolated from a saline soil in Cádiz, Spain (36° 27′ 06,90″N, 6° 12′ 07,60″O) .. This strain was grown in a saline medium (SW-7.5) with a total salt mixture concentration of 7.5% (w/v) supplemented with 0.5% (w/v) yeast extract .The medium was adjusted to pH 7.4, prior to

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frontiers | composition of bacterial and archaeal

Frontiers | Composition of Bacterial and Archaeal

The microbial communities in alkali-surfactant-polyacrylamide-flooded (ASP-flooded) oil reservoirs have rarely been investigated compared to those in water-flooded oil reservoirs. Here, the bacterial and archaeal communities in an ASP-flooded reservoir and the adjacent water-flooded block, and responses of the microbial communities in microcosms to nutrients were investigated by 16S rRNA gene

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biocatalytic degradation efficiency of postconsumer

Biocatalytic Degradation Efficiency of Postconsumer

1 Introduction. The global annual production of plastics has been estimated to reach 348 million tons (Mt.) in 2017, 1 of which 90% was produced from fossil fuels. 2 Packaging is the largest application sector making up close to 40% of the total plastics demand. 1 The short‐lived, disposable packaging materials greatly contribute to the municipal solid waste and marine anthropogenic litter

Get Price
technical program – 23rd world petroleum congress 2021

Technical Program – 23rd World Petroleum Congress 2021

Technical Program. Learn, collaborate and gain insight into the energy industry. From innovations in upstream to the future of downstream, the Technical Program of the 23rd WPC follows the overarching theme, Innovative Energy Solutions.This gives the Technical Program a range of compelling topics that reflect current industry challenges and opportunities.

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polyacrylamide importers & polyacrylamide buyers

Polyacrylamide Importers & Polyacrylamide Buyers

Polyacrylamide Importers - Instantly Connect with Verified Polyacrylamide Buyers & Polyacrylamide Importers from USA, China, India at TradeKey Importers Directory.

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seafood identification in multispecies products

Seafood Identification in Multispecies Products

Few studies applying NGS have been conducted in the food inspection field, particularly on multispecies seafood products. A preliminary study screening the performance and the potential application in NGS analysis of 14 “universal primers” amplifying 16SrRNA, cytb, and COI genes in fish and cephalopods was performed. Species used in surimi preparation were chosen as target.

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study of copolymer performance in polymer flooding of the

Study of copolymer performance in polymer flooding of the

It was also found that the viscosity of a KP/water solution is much higher than the viscosity of an HPAM-15/water solution (where HPAM-15 is a partially hydrolyzed polyacrylamide with molecular weight 15 million daltons) at the same polymer concentration (1000 mg/L), and is close to the viscosity of an HPAM-30/water solution (where HPAM-30 has

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