Partially hydrolyzed polyacrylamide: enhanced oil recovery ...
Polymers, such as partially hydrolyzed polyacrylamide (HPAM), are widely used in oil fields to enhance or improve the recovery of crude oil from the reservoirs. It works by increasing the viscosity of the injected water, thus improving its mobility and oil recovery.
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Experimental evaluation of partially hydrolyzed ...
We hereby employ molecular dynamics (MD) simulations (∼6 μs in total) to investigate the chain dynamics, aggregation, and interfacial properties of the partially hydrolyzed polyacrylamide (HPAM) polymer. HPAM is widely used in chemical enhanced oil recovery (cEOR) applications.
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... Shear Degradation of Partially Hydrolyzed Polyacrylamide Solutions ...
Abstract. Partially hydrolyzed polyacrylamide solutions are highly shear degradable and may lose much of their effectiveness in reducing water mobility when sheared by flow through porous rock in the vicinity of an injection well. Degradation is investigated by forcing polymer solutions, prepared in brines of various salinities, through consolidated sandstone plugs differing in length and ...
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Modeling of Partially Hydrolyzed Polyacrylamide‐Hexamine ... ...
This paper concerns one class of polymers that apparently is being tested widely as an additive for injection water; it is partially hydrolyzed polyacrylamide. The present investigation surveys some ways in which polymer solution properties are affected by polymer molecular weight, rock and fluid properties, polymer molecular weight, rock and fluid properties, flow rate and temperature.
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... and Testing of Partially Hydrolyzed Polyacrylamide ... ...
American Institute of Mining, Metallurgical, and Petroleum Engineers Inc.Abstract. The evaluation of a mobility control polymer requires; that proper laboratory techniques be followed if meaningful results are to be obtained. New procedures are presented and existing procedures are reviewed to aid in the procedures are reviewed to aid in the measurement of properties related to performance of ...
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... Degradation of Partially Hydrolyzed Polyacrylamide Solu ...
Introduction. A number of recent papers have addressed the problem of mechanical degradation during injection problem of mechanical degradation during injection into oil reservoirs for secondary or tertiary recovery applications. Ref. 6 introduces and tests a mechanism for mechanical degradation of partially hydrolyzed polyacrylamide solutions and develops a procedure for predicting loss of ...
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... Microgel Formation in Partially Hydrolyzed Polyacrylamide ...
The reduction of water mobility by solutions of partially hydrolyzed polyacrylamides is brought about partially hydrolyzed polyacrylamides is brought about not only by an increase in viscosity but also by a decrease in effective permeability to water. This decrease in water permeability is due to retention of the polymer within the pore channels so that there is a marked reduction of flow. In ...
Get PricePolymers for conformance improvement | Society of Petroleum ...
Polyacrylamide and partially hydrolyzed polyacrylamide Polyacrylamide (PAM) is a synthetic polymer of long-chain acrylamide subunits, high molecular weight (1000 o t 20 × 10 6 g/mol), and a wide range degree of hydrolysis (Abidin et al., 2012; Joshi
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... Dependence of the Shear-Thinning Behavior o Partially . ...
Original Article Rheology of diluted and semi-diluted partially hydrolyzed polyacrylamide solutions under shear: Experimental studies Rui Zhang b, Xianru He a, *, Shuwei Cai a, Kun Liu c a State Key Laboratory of Oil and Gas Reservoir Geology & Exploitation, College of Materials Science and Engineering, Southwest Petroleum ...
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Micromechanism of partially hydrolyzed polyacrylamide molecu ...
In this study, partially hydrolyzed polyacrylamide (HPAM) or co-polymers of acrylamide and 2-acrylamido-2-methylpropanesulfonic acid (AM-AMPS) cross-linked with water-soluble phenolic resin (WSPR ...
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PHPA HPAM,Drilling Polyacrylamide,Anionic Polyacrylamide ...
Item Name:Partially Hydrolyzed Anion Polyacrylamide PHPA CAS No.:9003-05-8 EINECS No.:201-173-7 Other Names:PHPA MF:C3H5NO)n Purity:100% Type:Oil Drilling Additives PHPA is short for partially hydrolyzed polyacrylamide,it's a kind of drilling mud additive.Can be used in both industrial and oil/gas drilling.Can be used in both fresh water and brines but requires high temperature.
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Mobility Control with Partially Hydrolyzed PolyacrylamideA R ...
Partially hydrolyzed polyacrylamides dissolved in water or dilute salt solutions do not satisfy these requirements. A more reasonable calculation of polymer size may be made from intrinsic viscosity, [eta], which can be estimated for unhydrolyzed polyacrylamide from the following correlation:
Get PriceThe Mechanism of Microgel Formation in Partially Hydrolyzed ...
The reduction of water mobility by solutions of partially hydrolyzed polyacrylamides is brought about partially hydrolyzed polyacrylamides is brought about not only by an increase in viscosity but also by a decrease in effective permeability to water. This decrease in water permeability is due to retention of the polymer within the pore channels so that there is a marked reduction of flow. In ...
Get Price... Rheological Properties of Partially Hydrolyzed Polyacrylamide Seeded ...
For that, partially hydrolyzed polyacrylamide (HPAM) with different molar masses were used as the EOR polymer, while the ... , A., & Al-Bemani, A. (2021). Bacterial diversity of heavy crude oil based mud samples near Omani oil wells. Petroleum Science and ...
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... of Viscosity for Partially Hydrolyzed Polyacrylamide .. ...
Abstract. Loss of solution viscosity in water of increasing ionic strength is a major problem encountered in the use of the partially hydrolyzed polyacrylamide polymers for improved oil recovery. It is recognized widely that the viscosity loss is more drastic in the presence of multivalent cations than is observed for sodium ions. There is, however, little information available on the ...
Get PriceCan hydrolyzed polyacrylamide be degraded?
For oil field applications, partially hydrolyzed polyacrylamide (HPAM) is the most widely used polymer. HPAM must maintain high viscosity to achieve good oil recovery. In reality, however, polymers can be severely degraded by shearing and heat in the underground environment. This phenomenon is studied in this paper.
What is partially hydrolyzed polyacrylamide (PHPA)?
Partially hydrolyzed polyacrylamide (PHPA) is the most frequently used polymer in this respect, owing to its low cost, viscosifying nature, and well-known physiochemical properties (Urbissinova et al. 2010). The molecule of this polymer is a flexible chain which remains in coil-like structure in the absence of a shearing effect.
Which polymer is used to produce partially hydrolyzed polyacrylamide (HPAM)?
PAM is used to produce partially hydrolyzed polyacrylamide (HPAM), which is linear, anionic, water-soluble, stable, polymeric, and high molecular weight chain of acrylamide (C 3 H 5 NO) monomers (Bao et al., 2010; Braun et al., 2022; Liu et al., 2016; Xiong et al., 2018).
Which polymers are used in oil fields?
Polymers, such as partially hydrolyzed polyacrylamide (HPAM), are widely used in oil fields to enhance or improve the recovery of crude oil from the reservoirs. It works by increasing the viscosity of the injected water, thus improving its mobility and oil recovery.
How is partially hydrolyzed polyacrylamide treated?
Dong L, Su F, Wang YZ. Treatment of partially hydrolyzed polyacrylamide by mixed bacteria isolated from wastewater. Environmental Progress & Sustainable Energy. 2020;39 (6):e13445. doi: 10.1002/ep.13445. [DOI] [Google Scholar]
How can polymer flooding improve oil recovery?
Polymer flooding is the most successful chemical method to enhance oil recovery. This technique has achieved large-scale field application in China. Polymer flooding is also being tested in several heavy oil fields. For oil field applications, partially hydrolyzed polyacrylamide (HPAM) is the most widely used polymer.
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