Development and Performance Evaluation of a High-Efficiency Asphalt Dispersant

doi:10.12388/j.issn.1673-2677.2025.01.009

Abstract

Abstract:

In order to solve the problem of severe blockage caused by the gradual precipitation，aggregation and settlement of asphaltenes with the decreasing temperature during the artificial lifting process in Tahe Oilfield，a high-efficiency asphalt dispersant was developed and evaluated via the steel wire mesh dissolution method. Through the characterization analysis of the wellbore sediments by three-component solvent fractionation，elemental composition determination and scanning electron microscopy （SEM），asphaltenes were determined to be the main component of Tahe wellbore sediments. According to the principle of similar mutual solubility ，a dispersant LYH-1 （aromatic solvent LY + 1.0% n-pentanol + 1.0% nonylphenol + 0.2% petroleum sulfonate） that could efficiently dissolve asphaltenes was developed. The asphaltene sediments were soaked in the asphalt dispersant LYH-1 in a water bath at 50°C for 4 h，and the solubility of 1 g of asphaltene sediments in 5 g of asphalt dispersant LYH-1 was as high as 97%，and the sediments did not aggregate after long-term standing，suggesting excellent stability and expanded applicability. The investigation of the working mechanism of the high-efficiency asphalt dispersant LYH-1 demonstrates that the dispersant forms a stable system with asphaltene sediments，mainly through hydrogen bonding and π-π interaction，which reduces the particle sizes of asphaltene aggregates to allow them to be stably suspended in solutions，and hinders the further flocculation and deposition of asphaltenes. The results show that LYH-1，as a novel high-performance asphalt dispersant，can effectively prevent the blockage of oil wells and surface pipelines while reducing production costs，so as to achieve the goal of production growth and improve the development efficiency of heavy oil reservoirs.

Key words:

heavy oil, asphaltene, wellbore sediments, asphalt dispersant, hydrogen bonding, π-π interaction

摘要：

针对塔河油田井筒举升过程中沥青质随温度降低逐渐析出、聚集、沉淀造成严重堵塞的问题，采用钢丝网溶解法开展沥青分散剂的研制和评价。通过对井筒沉积物进行三组分、元素组成、扫描电镜（SEM）等表征分析，确定塔河油田井筒沉积物的主要成分为沥青质。根据相似相溶原理，研制出了一套高效溶解沥青质的分散剂LYH-1（芳烃溶剂LY+1.0%正戊醇+1.0%壬基酚+0.2%石油磺酸盐）。水浴50 ℃，将沥青质沉积物浸泡在沥青分散剂LYH-1中静置反应4 h，5 g沥青分散剂LYH-1对1 g沥青质沉积物的溶解率高达97%，长时间放置不聚集，具有良好的稳定性能和普适性能。通过研究高效沥青分散剂LYH-1对沥青质的作用机理，证明其主要通过氢键、π-π相互作用与沥青质沉积物形成稳定体系，降低沥青质聚集物粒径，使聚集体稳定悬浮于溶液中，阻碍沥青质进一步絮凝沉积。研究结果表明，LYH-1是一种新型的高性能沥青分散剂，它可以在降低生产成本的同时有效防止油井和地面管道的堵塞，实现增产目标，提高稠油油藏的开发效益。

关键词:

稠油, 沥青质, 井筒沉积物, 沥青分散剂, 氢键作用, π-π相互作用

CLC Number:

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ZHENG Cunchuan , WANG Wei , CHEN Shengen , WANG Rui , CHEN Jiangdong. Development and Performance Evaluation of a High-Efficiency Asphalt Dispersant[J]. Xinjiang Oil & Gas, 2025, 21(1): 78-86.

郑存川 , 王伟 , 陈神根 , 王瑞 , 陈江东. 高效沥青分散剂的研制及性能评价[J]. 新疆石油天然气, 2025, 21(1): 78-86.

References

［1］张龙力，范东伟，张国栋，等. 光谱法表征重质油胶体稳定性［J］. 实验室研究与探索，2015，34（10）：13-17.ZHANG Longli，FAN Dongwei，ZHANG Guodong，et al. Study on the colloidal stability of heavy oil by spectroscopy method［J］. Research and Exploration in Laboratory，2015，34（10）：13-17.

［2］向晶，唐善法，刘志明，等. 稠油沥青分散剂的筛选及效果研究［J］. 精细石油化工进展，2015，16（1）：13-15.XIANG Jing，TANG Shanfa，LIU Zhiming，et al. Selection of viscous oil asphaltene dispersants and study on their effect［J］. Advances in Fine Petrochemicals，2015，16（1）：13-15.

［3］张莉伟，游红娟，苏日古，等. 浅层稠油油藏VHSD扩容改造实验研究与应用［J］. 新疆石油天然气，2023，19（2）：69-74.ZHANG Liwei，YOU Hongjuan，SU Rigu，et al. Experimental research and application of VHSD dilatation stimulation in shallow heavy oil reservoirs［J］. Xinjiang Oil & Gas，2023，19（2）：69-74.

［4］田士伟. 地化录井在辽河油田西部凹陷稠油层评价中的应用［J］. 录井工程，2021，32（3）：80-83.TIAN Shiwei. Application of geochemical logging to evaluation of heavy oil reservoir in western depression of Liaohe Oilfield［J］. Mud Logging Engineering，2021，32（3）：80-83.

［5］王艳婷. 塔河油田井筒沥青质分散解堵剂性能评价方法研究［D］. 北京：中国石油大学（北京），2017.WANG Yanting. Study on performance evaluation method of asphaltene dispersing and plug-removing agent in wellbore of Tahe Oilfield［D］. Beijing：China University of Petroleum （Beijing），2017.

［6］GHANEM A，ALHARTHY R D，DESOUKY S M，et al. Synthesis and characterization of imidazolium-based ionic liquids and evaluating their performance as asphaltene dispersants［J］. Materials，2022，15（4）：1600.

［7］龚俊，韦敏，郝明辉，等. 无机盐对沥青质稳定性及对分散剂性能的影响［J］. 油田化学，2023，40（3）：516-522.GONG Jun，WEI Min，HAO Minghui，et al. Effect of inorganic salts on the stability of asphaltene and the performance of dispersant［J］. Oilfield Chemistry，2023，40（3）：516-522.

［8］刘莎莎，闫暄崎，游靖，等. 蒙古林砾岩油藏火驱现场试验及初期见效特征［J］. 石油钻采工艺，2023，45（4）：510-515.LIU Shasha，YAN Xuanqi，YOU Jing，et al. Field test and initial response characteristics of fire flooding in Menggulin conglomerate reservoir［J］. Oil Drilling & Production Technology，2023，45（4）：510-515.

［9］连响，郑延成，吴川，等. 沥青质分散剂的合成及性能评价［J］. 精细石油化工，2018，35（5）：10-15.LIAN Xiang，ZHENG Yancheng，WU Chuan，et al. Synthesis and evaluation of asphaltene dispersants［J］. Speciality Petrochemicals，2018，35（5）：10-15.

［10］BAGHERSAEI S，MOKHTARI B，SOULGANI B S，et al. Investigation on asphaltene dispersion activity of tetrabutylammonium carboxylate ionic liquids［J］. Energy & Fuels，2023，37（10）：7085-7093.

［11］宗雨轩. 化学法控制稠油沥青质分散状态研究［D］. 山东青岛：中国石油大学（华东），2021.ZONG Yuxuan. Study on chemical control of asphaltene dispersion state of heavy oil［D］. Qingdao，Shandong：China University of Petroleum （East China），2021.

［12］范伟东，曹畅，刘磊，等. 新型沥青质分散剂的合成及性能评价［J］. 合成化学，2021，29（6）：515-519.FAN Weidong，CAO Chang，LIU Lei，et al. Synthesis and performance evaluation of a novel asphaltene dispersant［J］. Chinese Journal of Synthetic Chemistry，2021，29（6）：515-519.

［13］丛玉凤，谢金香，刘辉，等. 线型SBS胶乳改性乳化沥青的制备及性能分析［J］. 辽宁石油化工大学学报，2019，39（3）：17-21.CONG Yufeng，XIE Jinxiang，LIU Hui，et al. Preparation and performance analysis of SBS latex modified emulsified asphalt［J］. Journal of Liaoning Petrochemical University，2019，39（3）：17-21.

［14］邹剑，赵琳，王弘宇，等. 稠油沥青质分散剂作用机制［J］. 油田化学，2020，37（3）：462-467.ZOU Jian，ZHAO Lin，WANG Hongyu，et al. Action mechanism of dispersants on heavy oil asphaltenes［J］. Oilfield Chemistry，2020，37（3）：462-467.

［15］PARIDAR S，SOLAIMANY NAZAR A R，KARIMI Y. Experimental evaluation of asphaltene dispersants performance using dynamic light scattering［J］. Journal of Petroleum Science and Engineering，2018，163：570-575.

［16］任洪达，赵永昌，马泽华，等. 油田微生物技术研究及应用概述［J］. 新疆石油天然气，2022，18（1）：86-89.REN Hongda，ZHAO Yongchang，MA Zehua，et al. Overview of oilfield microbial technology research and application［J］. Xinjiang Oil & Gas，2022，18（1）：86-89.

［17］FAKHER S，IMQAM A，WANAS E. Investigating the viscosity reduction of ultra-heavy crude oil using hydrocarbon soluble low molecular weight compounds to improve oil production and transportation［C］. SPE International Heavy Oil Conference and Exhibition，Kuwait City，Kuwait，2018：SPE-193677-MS.

［18］FIROOZINIA H，HOSSEIN ABAD K F，VARAMESH A. A comprehensive experimental evaluation of asphaltene dispersants for injection under reservoir conditions［J］. Petroleum Science，2016，13（2）：280-291.

［19］张庆，邓文安，李传，等. 稠油沥青质的基本化学组成结构与缔合性研究［J］. 石油炼制与化工，2014，45（6）：20-25.ZHANG Qing，DENG Wenan，LI Chuan，et al. Study on basic chemical structure and association of asphaltene in heavy oil［J］. Petroleum Processing and Petrochemicals，2014，45（6）：20-25.

［20］YU J，QUAN H P，CHANG S H，et al. Research on a fluorine-containing asphaltene dispersant and its application in improving the fluidity of heavy oil［J］. Journal of Molecular Liquids，2023，375：121318.

［21］范秋菊，刘平礼，罗志峰，等. 油井沥青质沉积控制技术的研究与应用［J］. 油田化学，2016，33（2）：370-375.FAN QiuJu，LIU Pingli，LUO Zhifeng，et al. Research and application of technology on controlling asphaltene deposition in oil well［J］. Oilfield Chemistry. 2016，33（2）：370-375.

［22］杜新娟，刁大龙，张龙力. 沥青质分散剂的研究进展［J］. 石油化工高等学校学报，2024，37（4）：12-17.DU Xinjuan，DIAO Dalong，ZHANG Longli. Research progress of asphaltene dispersants［J］. Journal of Petrochemical Universities，2024，37（4）：12-17.

［23］王晓晓. 分散剂抑制原油中沥青质沉淀的机理［D］. 山东青岛：中国石油大学（华东），2014.WANG Xiaoxiao. Mechanism of dispersant inhibiting asphaltene precipitation in crude oil［D］. Qingdao，Shandong：China University of Petroleum （East China），2014.

［24］宋江峰. 原油中沥青质的稳定性及其影响因素［J］. 油田化学. 2023，40（4）：627-635.SONG Jiangfegn. Stability and influencing factors of asphaltene in crude oil［J］. Oilfield Chemistry，2023，40（4）：627-635.

［25］AHMADI M，CHEN Z X. Molecular interactions between asphaltene and surfactants in a hydrocarbon solvent：Application to asphaltene dispersion［J］. Symmetry，2020，12（11）：1767.

［26］林东浩，罗根祥，朱孟爽，等. 塔河沥青质亚组分分离及表征［J］. 石油化工高等学校学报，2022，35（1）：18-22.LIN Donghao，LUO Genxiang，ZHU Mengshuang，et al. Separation and characterization of Tahe asphaltenes［J］. Journal of Petrochemical Universities，2022，35（1）：18-22.

［27］ALRASHIDI H，AFRA S，NASR-EL-DIN H A. Application of natural fatty acids as asphaltenes solvents with inhibition and dispersion effects：A mechanistic study［J］. Journal of Petroleum Science and Engineering，2019，172：724-730.

［28］郑存川，扶浩然. 一种聚合物沥青质抑制剂的抑制机理研究［J］. 广东化工，2021，48（23）：46-48.ZHENG Cunchuan，FU Haoran. Study on the inhibition mechanism of a polymer asphaltene inhibitor［J］. Guangdong Chemical Industry，2021，48（23）：46-48.

［29］李诚，田松柏，王小伟. 沥青质分散剂与阻聚剂研究进展［J］. 石油炼制与化工，2017，48（4）：99-108.LI Cheng，TIAN Songbai，WANG Xiaowei. Research and development of asphaltene dispersants and inhibitor［J］. Petroleum Processing and Petrochemicals，2017，48（4）：99-108.

［30］WIEHE I A，JERMANSEN T G. Design of synthetic dispersants for asphaltenes［J］. Petroleum Science and Technology. 2003，21（3-4）：527-536.

［31］LIMA A，MANSUR C，LUCAS E F，et al. Polycardanol or sulfonated polystyrene as flocculants for asphaltene dispersions［J］. Energy & Fuels，2010，24（4）：2369-2375 .

［32］王贵，潘定成，陈凯，等. 一种沥青质抑制剂及复配体系室内实验研究与现场试验［J］. 当代化工，2018，47（10）：2022-2025.WANG Gui，PAN Dingcheng，CHEN Kai，et al. Laboratory experiment research and field test of an asphaltene inhibitor and its compound system［J］. Contemporary Chemical Industry，2018，47（10）：2022-2025.

［33］李爱英，张文秀，舒福昌，等. BA原油沥青质性质及沉积抑制剂作用机理［J］. 化工进展，2019，38（S1）：110-115.LI Aiying，ZHANG Wenxiu，SHU Fuchang，et al. Properties of asphaltene in BA crude oil and mechanism of deposition inhibitor［J］. Chemical Industry and Engineering Progress，2019，38（S1）：110-115.

［34］蔡新恒，龙军，任强，等. 沥青质分子聚集体的解离对策［J］. 石油学报（石油加工），2020，36（5）：889-898.CAI Xinheng，LONG Jun，REN Qiang，et al. Theoretical study on disaggregation strategies for asphaltene aggregates［J］. Acta Petrolei Sinica （Petroleum Processing Section），2020，36（5）：889-898.

［35］唐晓莉，段文猛，范亚科，等. 乳化型沥青质分散抑制剂的研制［J］. 应用化工，2023，52（4）：1072-1077.TANG Xiao Li，DUAN Wenmeng，FAN Yake，et al. Development of emulsified asphaltene dispersion inhibitor［J］. Applied Chemical Industry，2023，52（4）：1072-1077.

[1]	ZHANG Liwei. Experimental Research and Application of VHSD Dilatation Stimulation in Shallow Heavy Oil Reservoirs [J]. Xinjiang Oil & Gas, 2023, 19(2): 69-74.
[2]	LIU Zhendong, SUN Tianli, Zhu Guo, XIONG Xindong, WAN Liping, ZENG Dezhi. Analysis of Wellbore Blocking Substances in Yuanba High-Sulfur Gas Field [J]. Xinjiang Oil & Gas, 2021, 17(3): 1-6.