hydrolyzed hydrophobic modified hpam polyacrylamide

study on properties of branched hydrophobically modified

Study on Properties of Branched Hydrophobically Modified

The effect of partially hydrolyzed polyacrylamides (HPAMs) used for polymer flooding is unsatisfactory under the conditions of high temperature and high salinity. In order to improve the viscosifying ability of HPAM, branched macromolecular skeleton monomer is used to change the linear backbone structure. A new branched hydrophobically modified polyacrylamide (BHMPAM) was synthesized by the ...

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and phase behavior of partially hydrolyzed hydrophobically

and Phase Behavior of Partially Hydrolyzed Hydrophobically

Relationship between Molecular Configuration and Phase Behavior of Partially Hydrolyzed Hydrophobically Modified Polyacrylamide YUAN Rui 1 LI Ying 1,* FANG Hong-Bo 2 WANG Wei 2(1 Key Laboratory for Colloid and Interface Chemistry,Ministry of Education,Shandong University,Jinan 250100,P.R.China;2 Design Institute,Shengli Oilfield of China Sinopec,Dongying 257015,Shandong Province,P.R.China)

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surface rheological properties of hydrophobically modified

Surface Rheological Properties of Hydrophobically Modified

The dilational rheological properties of hydrophobically modified polyacrylamide (HMPAM) or hydrolyzed polyacrylamide (HPAM) solutions without and with imidazolium surfactants ([C14-4-C14im]Br2 and [C14mim]Br) at the air/water surface were investigated using oscillating bubble measurements. The results obtained suggest that imidazolium surfactants interact with the polymer on the surface ...

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synthesis of hydrophobically modified polyacrylamide

Synthesis of hydrophobically modified polyacrylamide

hydrolyzed polyacrylamide (HPAM). Several field projects have been carried out utilising HPAM, and the observed trend is that these polymers show low shear stress stability, and low salt tolerance. They are also sensitive to elevated reservoir temperature. Additionally, polymer retention and

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interaction and adsorption of hydrophobically modified

Interaction and Adsorption of Hydrophobically Modified

The adsorption of polymers affects the cost and oil recovery in oil reservoir exploitation and the flocculation effect in the treatment of oil sand tailings. The adhesion and adsorption of a hydrophobically modified polyacrylamide (HMPAM), i.e., P(AM-NaAA-C 16 DMAAC), on silica and asphaltene were investigated using surface force measurements, thermodynamic analysis and quartz crystal ...

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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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high‐viscoelastic graft modified chitosan hydrophobic

High‐viscoelastic graft modified chitosan hydrophobic

High‐viscoelastic graft modified chitosan hydrophobic association polymer for enhanced oil recovery. ... The conventional partially hydrolyzed polyacrylamide (HPAM) is greatly restricted by its single linear molecular structure in oil reservoirs with severe reservoir conditions such as high temperature and high salt. ... Under the same ...

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表面活性剂与部分水解聚丙烯酰胺配伍性研究

表面活性剂与部分水解聚丙烯酰胺配伍性研究

表面活性剂与部分水解聚丙烯酰胺配伍性研究 侯军伟 1, 向小玲 2, 刘远 3, 刘鸿飞 1, 郑晓宇 1, 努尔古丽 1 1.中国石油大学(北京)克拉玛依校区 文理学院,新疆 克拉玛依 834000 2.中国石油 新疆油田公司实验检测研究院,新疆 克拉玛依 834000 3.中国石油 新疆油田公司工程技术公司,新疆 克拉玛依 834000

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research article study on properties of branched

Research Article Study on Properties of Branched

Modified Polyacrylamide for Polymer Flooding ... tially hydrolyzed polyacrylamide (HPAM), the viscosity of which, however, descends drastically with the increase of temperature and salinity [ ]. Hence, along with the contin- ... hydrophobic interaction, so the viscosity decreased. On the other hand, the intermolecular association increased with ...

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synthesis of hydrogel nanocomposites based on partially

Synthesis of Hydrogel Nanocomposites Based on Partially

The use of organic modified fillers was mentioned by Helvacioğlu and co-workers, which were used to improve the performance of polyacrylamide hydrogels, while Rezaei et al. used similar organic fillers in partially hydrolyzed polyacrylamide polymer dispersions (HPAM), where improvements were observed in their fluid properties.

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study on properties of branched hydrophobically modified

Study on Properties of Branched Hydrophobically Modified

The effect of partially hydrolyzed polyacrylamides (HPAMs) used for polymer flooding is unsatisfactory under the conditions of high temperature and high salinity. In order to improve the viscosifying ability of HPAM, branched macromolecular skeleton monomer is used to change the linear backbone structure. A new branched hydrophobically modified polyacrylamide (BHMPAM) was synthesized by the ...

Get Price
surface rheological properties of hydrophobically modified

Surface Rheological Properties of Hydrophobically Modified

The dilational rheological properties of hydrophobically modified polyacrylamide (HMPAM) or hydrolyzed polyacrylamide (HPAM) solutions without and with imidazolium surfactants ([C 14 ‐4‐C 14 im]Br 2 and [C 14 mim]Br) at the air/water surface were investigated using oscillating bubble measurements. The results obtained suggest that imidazolium surfactants interact with the polymer on the ...

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surface rheological properties of hydrophobically modified

Surface Rheological Properties of Hydrophobically Modified

The dilational rheological properties of hydrophobically modified polyacrylamide (HMPAM) or hydrolyzed polyacrylamide (HPAM) solutions without and with imidazolium surfactants ([C14-4-C14im]Br2 and [C14mim]Br) at the air/water surface were investigated using oscillating bubble measurements. The results obtained suggest that imidazolium surfactants interact with the polymer on the surface ...

Get Price
surface rheological properties of hydrophobically modified

Surface Rheological Properties of Hydrophobically Modified

The dilational rheological properties of hydrophobically modified polyacrylamide (HMPAM) or hydrolyzed polyacrylamide (HPAM) solutions without and with imidazolium surfactants ([C 14 ‐4‐C 14 im]Br 2 and [C 14 mim]Br) at the air/water surface were investigated using oscillating bubble measurements. The results obtained suggest that imidazolium surfactants interact with the polymer on the ...

Get Price
synthesis of hydrophobically modified polyacrylamide

Synthesis of hydrophobically modified polyacrylamide

hydrolyzed polyacrylamide (HPAM). Several field projects have been carried out utilising HPAM, and the observed trend is that these polymers show low shear stress stability, and low salt tolerance. They are also sensitive to elevated reservoir temperature. Additionally, polymer retention and

Get Price
... and a partially hydrolyzed polyacrylamide hybrid

... and a partially hydrolyzed polyacrylamide hybrid

Because amide groups can be easily hydrolyzed to carboxyl groups at high temperature, polyacrylamide (PAM) and its derivatives cannot be applied to high temperature and salinity reservoirs. To solve this problem, a new kind of surface modified nanosilica with different functional groups, including amine and octyl groups, was prepared in this article.

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疏水缔合减阻剂的分子模拟

疏水缔合减阻剂的分子模拟

疏水缔合减阻剂的分子模拟 刘庆旺 1, 郭昊 1, 范振忠 1, 钱黎庆 1, 尉小明 2, 刘致远 3 1. 东北石油大学石油工程学院, 黑龙江 大庆 163318; 2. 国家能源稠(重)油开采研发中心, 辽宁 盘锦 124000; 3. 大庆油田第二采油厂, 黑龙江 大庆 163000

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oil recovery performance of a modified hapam with lower

Oil recovery performance of a modified HAPAM with lower

Hydrophobic modified polyacrylamide polymer (HMPAM) is a typical representative of this type of polymer [15][16] [17]. The latter mainly includes 'star' polymers with hydrophobic groups attached ...

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research article study on properties of branched

Research Article Study on Properties of Branched

Modified Polyacrylamide for Polymer Flooding ... tially hydrolyzed polyacrylamide (HPAM), the viscosity of which, however, descends drastically with the increase of temperature and salinity [ ]. Hence, along with the contin- ... hydrophobic interaction, so the viscosity decreased. On the other hand, the intermolecular association increased with ...

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water-soluble hydrophobically associating polymers

Water-soluble hydrophobically associating polymers

Journal of Petroleum Science and Engineering 19 ?1998. 265–280 Water-soluble hydrophobically associating polymers for improved oil recovery: A literature review Kevin C. Taylor a a,1 , Hisham A. Nasr-El-Din b,) Petroleum Reco?ery Institute, a100, 3512 ...

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10.1016/j.eurpolymj.2006.12.016 | 10.1016/j ... - deepdyve

10.1016/j.eurpolymj.2006.12.016 | 10.1016/j ... - DeepDyve

1 Introduction Hydrophobically modified associating polyacrylamide (HAPAM) and its partially hydrolyzed analogues are now becoming a class of prospective candidates as thickeners or rheology modifiers for use in the formulations of tertiary oil recovery, drilling fluids, hydraulic fracturing and drag reduction.

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... and a partially hydrolyzed polyacrylamide hybrid

... and a partially hydrolyzed polyacrylamide hybrid

Because amide groups can be easily hydrolyzed to carboxyl groups at high temperature, polyacrylamide (PAM) and its derivatives cannot be applied to high temperature and salinity reservoirs. To solve this problem, a new kind of surface modified nanosilica with different functional groups, including amine and octyl groups, was prepared in this article.

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flow behavior and viscous-oil-microdisplacement

Flow Behavior and Viscous-Oil-Microdisplacement

Summary. To profoundly investigate the flow behavior and viscous-oil-microdisplacement characteristics of hydrophobically modified partially hydrolyzed polyacrylamides (HMHPAMs) as well as the effect of associating monomer content on those behaviors and characteristics, compared with partially hydrolyzed polyacrylamide (HPAM), the flow experiments through three serial mounted flat-sand ...

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polymers | free full-text | delayed crosslinking

Polymers | Free Full-Text | Delayed Crosslinking

The most commonly used polymer gel systems in profile control are hydrolyzed polyacrylamide (HPAM) and chromium (III) ions. Gels prepared with metallic crosslinkers such as chromium chromium, aluminum, and zirconium have lower stability at high temperatures and short gelation time, and are not profitable in high temperature reservoirs and deep ...

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疏水缔合减阻剂的分子模拟

疏水缔合减阻剂的分子模拟

疏水缔合减阻剂的分子模拟 刘庆旺 1, 郭昊 1, 范振忠 1, 钱黎庆 1, 尉小明 2, 刘致远 3 1. 东北石油大学石油工程学院, 黑龙江 大庆 163318; 2. 国家能源稠(重)油开采研发中心, 辽宁 盘锦 124000; 3. 大庆油田第二采油厂, 黑龙江 大庆 163000

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hydrophobic polymers flooding | intechopen

Hydrophobic Polymers Flooding | IntechOpen

Hydrophobically associating polyacrylamide are prepared conveniently by micellar copolymerization of hydrophilic and hydrophobic monomers , or through grafting or incorporating hydrophobic chain cross-linking segments onto main chain of partially hydrolyzed polyacrylamide (HPAM).

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rheology of hydrophobically associating polymers

Rheology of Hydrophobically Associating Polymers

associating polyacrylamide and hydrolyzed polyacrylamide were prepared by post-modification and contained 0.8 mol% of a C-8 alkyl group. Increasing salinity resulted in a decrease in reduced viscosity for both modified polymers in the dilute region. In the semi-dilute region above c*, reduced viscosity increased as the salinity increased for ...

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experimental study of key effect factors and simulation on

Experimental Study of Key Effect Factors and Simulation on

Unlike the conventional water-soluble polymers, i.e. partially hydrolyzed polyacrylamide (HPAM) in oilfields, when hydrophobically modified water-soluble polymer (HM-polymer) is dissolved in water ...

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cn103641950a - anionic hydrophobic association partially

CN103641950A - Anionic hydrophobic association partially

The invention discloses anionic hydrophobic association partially hydrolyzed polyacrylamide, and a structural formula is as shown in formula I. A preparation method of the anionic hydrophobic association partially hydrolyzed polyacrylamide comprises the steps of firstly preparing hydrophobic monomers-acrylic acid n-octyl ester; then synthesizing the anionic hydrophobic association partially ...

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宫厚健 副教授 - upc.edu.cn

宫厚健 副教授 - upc.edu.cn

2) Study on the temperature and salt tolerance of nanoparticle reinforced hydrophobic association partially hydrolyzed polyacrylamide solutions, Zhe Qiu, Houjian Gong,Long Xu, Weidong Wang,Mingzhe Dong, International Field Exploration and

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