Multifunctional anti-wax coatings for paraffin control in oil pipelines

Bai, Jie; Xu, Jinkai; Wu, Juntao

doi:10.1007/s12182-019-0309-7

Cited by 48 publications

(22 citation statements)

References 63 publications

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“…Owing to their excellent lubrication properties, “slippery liquid-infused porous surfaces” (SLIPS) as a classic antiwaxing material, has attracted widespread attention. , The key factor governing the slippery performances of these SLIPS materials is the micro/nanoporous substrate, which can lock a lubricating liquid on its surface. Thus, the lubricant film is critical for reducing the contact area between the sample surface and paraffin wax, and therefore, relieves wax deposition. , In this study, macroporous gel allowed the lubricant to be firmly trapped on their surfaces, and the fully wetted surfaces may exhibit exceptional slippery properties. In this case, antiwaxing tests were conducted on the porous polymer (7B/Si20) and the nonstructured polymer (7B/acetone) (Figure ).…”

Section: Resultsmentioning

confidence: 90%

Fabrication of Elastic Macroporous Polymers with Enhanced Oil Absorbability and Antiwaxing Performance

et al. 2020

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Porous polymers are of great interest in potential energy storage and environmental remediation applications. However, traditional fabrication methods are either time-consuming or energy-consuming and deteriorate the mechanical strength of polymer materials. In this study, polymerization-induced phase separation was used to realize the template-free fabrication of superflexible macroporous polymers. Since the solvent is also used as a porogen, this method can be widely used to synthesize several porous polymers by carefully choosing the solvent and monomer. Compared to nonstructured polymers, the prepared macroporous polymers exhibited enhanced mechanical strength, superflexibility, multicompressibility, and bending properties. Along with hydrophobicity/oleophilicity and macroporous structures, the as-prepared porous polymers demonstrated controllable oil absorbability and release; furthermore, after infusing with lubrication liquid, these materials can be used as antiwaxing materials. The elastic porous polymers prepared using this simple and universal method show great potential for various applications, including controlled drug release, antiwaxing, and lubrication.

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Section: Resultsmentioning

confidence: 90%

Fabrication of Elastic Macroporous Polymers with Enhanced Oil Absorbability and Antiwaxing Performance

et al. 2020

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“…Paraffin is a complex mixture of n-alkanes, iso-alkanes and cycloalkanes, etc., and it is easy to deposit on pipeline surface to arouse flow resistance increase or even pipe blockage. [31] Because of its excellent anti-paraffin effect, low surface energy coating is the most potential application coating in pipe inner wall to reduce paraffin adhesion. Here, the anti-waxing The shear force curve of ice block on glass, glass@silica sol@n-octadecyltriethoxysilane, glass@silica sol@1H,1H,2H,2H-perfluorodecyltriethoxysilane and glass@silica sol@loop-60000 surfaces.…”

Section: Anti-waxing Performance Of the Hybrid Coating Surfacementioning

confidence: 99%

Self‐Lubricative Organic–Inorganic Hybrid Coating with Anti‐Icing and Anti‐Waxing Performances by Grafting Liquid‐Like Polydimethylsiloxane

Hao

Sun

et al. 2022

Adv Materials Inter

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Polydimethylsiloxane (PDMS) is one of the most popular materials to protect infrastructures from the complicated environment due to its chemical stability, nontoxicity, low cost, high durability, and chain flexibility. Herein, a series of organic–inorganic hybrid coatings are prepared by simply grafting loop‐like PDMS on a solid surface. Owning to the low surface energy and high mobility of PDMS chains, the special characteristics, including liquid repellency, anti‐fouling, self‐lubrication, anti‐ and delay‐ice, anti‐paraffin, etc., are presented. To confirm the liquid‐like slippery nature of PDMS surface, the controlled de‐icing and de‐waxing tests on rigid chain surfaces are conducted. The liquid‐like nature of PDMS allows ice or paraffin to have a low adhesion in a slip state, but a fractured state on alkylated and perfluorinated surface with a high adhesion strength. In addition, the flexible PDMS chains grafted on the inorganic silica layer by stable covalent bond endow the surface with excellent durability, including maintaining low ice adhesion during 50 icing‐deicing cycles, resistance to UV irradiation, washing or soaking in organic solvent, etc. This work provides a simple approach for constructing self‐lubricative low surface energy coating to realize de‐ice and de‐wax easily, which may have a broad prospect of application in equipment protection.

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“…The most common and effective method in this group is the use of chemical reagents-inhibitors of the formation of wax deposition. The principle of their action is based on various adsorption processes, depending on which they are divided into groups: wetting agents, dispersants, modifiers, depressants, and reagents of complex action [19][20][21]. A wide range of substances are used as additives: alkyl aromatic compounds, esters, nitrogen-containing compounds, polymer type substances [22][23][24].…”

Section: Commented [M1]mentioning

confidence: 99%

Development of an Approach for Determining the Effectiveness of Inhibition of Paraffin Deposition on the Wax Flow Loop Laboratory Installation

2021

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The formation of wax deposits is a common phenomenon in the production and transportation of formation fluids. On the territory of the Perm Krai, this problem occurs in half of the mining funds. One of the most common and promising methods of dealing with these deposits is the use of inhibitor regents. The most popular technique for assessing the effectiveness of a wax inhibitor is the «Cold Finger», which has a number of significant drawbacks. This work presents a number of methods for assessing the effectiveness of inhibition of paraffin formation on the laboratory installation «WaxFlowLoop». A number of laboratory studies have been carried out to determine the effectiveness of a paraffin deposition inhibitor for inhibiting the paraffin formation process of four target fluids. Verification of the obtained values was carried out by comparing them with the field data. As a result of laboratory studies, it was found that the value of the inhibitor efficiency, determined by the «Cold Finger» method, differs from the field data by an average of 2 times. At the same time, the average deviation of the results determined at the «WaxFlowLoop» installation from the field data is 8.1%. The correct selection of a paraffin deposition inhibitor and its dosage can significantly increase the inter-treatment period of the well, thereby reducing its maintenance costs and increasing the efficiency of well operation.

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Multifunctional anti-wax coatings for paraffin control in oil pipelines

Cited by 48 publications

References 63 publications

Fabrication of Elastic Macroporous Polymers with Enhanced Oil Absorbability and Antiwaxing Performance

Fabrication of Elastic Macroporous Polymers with Enhanced Oil Absorbability and Antiwaxing Performance

Self‐Lubricative Organic–Inorganic Hybrid Coating with Anti‐Icing and Anti‐Waxing Performances by Grafting Liquid‐Like Polydimethylsiloxane

Development of an Approach for Determining the Effectiveness of Inhibition of Paraffin Deposition on the Wax Flow Loop Laboratory Installation

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