基于分子模拟的新型油溶性降黏剂的制备及性能优化

doi:10.16085/j.issn.1000-6613.2020-0354

化工进展 ›› 2020, Vol. 39 ›› Issue (12): 5234-5242.DOI: 10.16085/j.issn.1000-6613.2020-0354

基于分子模拟的新型油溶性降黏剂的制备及性能优化

李熠宇¹(), 吴琼², 徐鹏³, 马爱青³, 侯影飞¹()

^1.中国石油大学（华东）重质油国家重点实验室，山东青岛 266580
^2.中国石油化工股份有限公司胜利油田分公司石油工程技术研究院，山东东营 257000
^3.山东省稠油开采技术重点实验室，山东东营 257000

出版日期:2020-12-05 发布日期:2020-12-02
通讯作者: 侯影飞
作者简介:李熠宇（1995—），男，硕士，研究方向为石油炼制与化工。E-mail：404840892@qq.com。
基金资助:
中央高校基本科研业务费专项(18CX05001A);国家重点研发计划政府间国际科技创新合作重点专项(SQ2019YFE0115600)

Preparation and performance optimization of a new viscosity-reducing agent for crude oil based on molecular simulation

Yiyu LI¹(), Qiong WU², Peng XU³, Aiqing MA³, Yingfei HOU¹()

^1.State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, China
^2.Petroleum Engineering Technology Research Institute, Shengli Oilfield Company, SINOPEC, Dongying 257000, Shandong, China
^3.Shandong Provincial Key Laboratory of Heavy Oil Production Technology, Dongying 257000, Shandong, China

Online:2020-12-05 Published:2020-12-02
Contact: Yingfei HOU

摘要/Abstract

摘要：

为了解决胜利油田稠油黏度高、开采困难等问题，通过分子模拟指导，以马来酸酐、甲基丙烯酸十八酯、N-乙烯基吡咯烷酮及苯乙烯进行四元共聚，获得了适合原油特性的降黏剂。以降黏率为考察指标，探讨了单体投料比例、最佳反应条件等对降黏效果的影响。结果表明，马来酸酐、甲基丙烯酸十八酯、N-乙烯基吡咯烷酮及苯乙烯投料摩尔比为4∶13.5∶8∶3、引发剂加量为1%（质量分数）、链转移剂用量为0.5%（质量分数）、80℃反应8h时，合成的降黏剂效果最好，且在降黏剂用量为0.3%（质量分数）时，可将原油黏度从1100mPa·s（50℃）降至403mPa·s，降黏率达到63.3%，原油凝点可从38.5℃降低至33.2℃，通过红外及氢谱等进行了表征，与预想分子结构一致。

关键词: 油溶性降黏剂, 四元聚合, 降黏率

Abstract:

This article provides a method to design a viscosity reducing agent, which builds a crude oil model through molecular simulation and calculates the type of monomer suitable for the viscosity reduction of the crude oil. Viscosity reducing agent was obtained by quaternary copolymerization of styrene with maleic anhydride, octadecyl methacrylate, and N-vinylpyrrolidone. The influence of various factors on the viscosity reduction was determined, and the optimal reaction conditions and monomer feeding ratio were obtained by measuring the viscosity reduction rate of crude oil, infrared spectrum and hydrogen spectrum. The results show that the feed ratio is 4∶13.5∶8∶3, and the reaction is performed at 80℃ for 8 hours. The amount of initiator is 1%(wt), the amount of chain transfer agent is 0.5% (mass fraction). The viscosity of crude oil can be reduced from 1100mPa·s (50℃) to 403mPa·s with a viscosity reduction rate of 63.3% by adding 0.3% (mass fraction) viscosity reducer. After testing the viscosity-temperature curve, it is found that the viscosity-reducing agent can effectively reduce the freezing point of crude oil from 38.5℃ to 33.2℃.The characterization by infrared spectrum and hydrogen spectrum indicates that it has the expected molecular structure.

Key words: oil-soluble viscosity reducing agent, quadripolymers, viscosity reduction

中图分类号:

TQ317

李熠宇, 吴琼, 徐鹏, 马爱青, 侯影飞. 基于分子模拟的新型油溶性降黏剂的制备及性能优化[J]. 化工进展, 2020, 39(12): 5234-5242.

Yiyu LI, Qiong WU, Peng XU, Aiqing MA, Yingfei HOU. Preparation and performance optimization of a new viscosity-reducing agent for crude oil based on molecular simulation[J]. Chemical Industry and Engineering Progress, 2020, 39(12): 5234-5242.

参考文献

1	GE J, FENG A, ZHANG G, et al. Study of the factors influencing alkaline flooding in heavy-oil reservoirs[J]. Energy & Fuels, 2011, 26(5): 2875-2882.
2	MARTíNEZ-PALOU R, MOSQUEIRA M D L, ZAPATA-RENDóN B, et al. Transportation of heavy and extra heavy crude oil by pipeline: a review[J]. Journal of Petroleum Science and Engineering, 2011, 75(3/4): 274-282.
3	HASAN S W, GHANNAM M T, ESMAIL N. Heavy crude oil viscosity reduction and rheology for pipeline transportation[J]. Fuel, 2010, 89(5): 1095-1100.
4	ESKIN D, RATULOWSKI J, AKBARZADEH K, et al. Modelling asphaltene deposition in turbulent pipeline flows[J]. The Canadian Journal of Chemical Engineering, 2011, 89(3): 421-441.
5	YAO H, DAI Q, YOU Z, et al. Modulus simulation of asphalt binder models using molecular dynamics (MD) method[J]. Construction and Building Materials, 2018, 162: 430-441.
6	YANG Y, GUO J, CHENG Z, et al. New composite viscosity reducer with both asphaltene dispersion and emulsifying capability for heavy and ultraheavy crude oils[J]. Energy & Fuels, 2017, 31(2): 1159-1173.
7	MU?OZ J A D, ANCHEYTA J, CASTA?EDA L C. Required viscosity values to ensure proper transportation of crude oil by pipeline[J]. Energy & Fuels, 2016, 30(11): 8850-8854.
8	HASSANEAN M H, AWAD M E, MARWAN H, et al. Studying the rheological properties and the influence of drag reduction on a waxy crude oil in pipeline flow[J]. Egyptian Journal of Petroleum, 2016, 25(1): 39-44.
9	ALI H L, AL-GHANNAM A K, AL-RAWI M J. Chemical structure of asphaltenes in heavy crude oils investigated by n.m.r.[J]. Fuel, 1990, 69(4): 519-521.
10	GROENZIN H, MULLINS O C. Asphaltene molecular size and structure[J]. The Journal of Physical Chemistry A, 1999, 103(50): 11237-11245.
11	CASTRO L V, VAZQUEZ F. Fractionation and characterization of Mexican crude oils[J]. Energy & Fuels, 2009, 23(3): 1603-1609.
12	TREJO F, ANCHEYTA J. Characterization of asphaltene fractions from hydrotreated Maya crude oil[J]. Industrial & Engineering Chemistry Research, 2007, 46(23): 7571-7579.
13	AGUILERA-MERCADO B, HERDES C, MURGICH J, et al. Mesoscopic simulation of aggregation of asphaltene and resin molecules in crude oils[J]. Energy & Fuels, 2006, 20(1): 327-338.
14	BARCENAS M, OREA P. Molar-mass distributions of asphaltenes in the presence of inhibitors: experimental and computer calculations[J]. Energy & Fuels, 2011, 25(5): 2100-2108.
15	LEóN O, ROGEL E, ESPIDEL J, et al. Asphaltenes:structural characterization, self-association, and stability behavior[J]. Energy & Fuels, 2000, 14(1): 6-10.
16	SPIECKER P M, GAWRYS K L, KILPATRICK P K. Aggregation and solubility behavior of asphaltenes and their subfractions[J]. Journal of Colloid and Interface Science, 2003, 267(1): 178-193.
17	GRAY M R, TYKWINSKI R R, STRYKER J M, et al. Supramolecular assembly model for aggregation of petroleum asphaltenes[J]. Energy & Fuels, 2011, 25(7): 3125-3134.
18	ROGEL E. Simulation of interactions in asphaltene aggregates[J]. Energy & Fuels, 2000, 14(3): 566-574.
19	ZHANG Y, TAKANOHASHI T, SHISHIDO T, et al. Estimating the interaction energy of asphaltene aggregates with aromatic solvents[J]. Energy & Fuels, 2005, 19(3): 1023-1028.
20	ALVAREZ-RAMIREZ F, RAMIREZ-JARAMILLO E, RUIZ-MORALES Y. Calculation of the interaction potential curve between asphaltene-asphaltene, asphaltene-resin, and resin-resin systems using density functional theory[J]. Energy & Fuels, 2006, 20(1): 195-204.
21	CASTELLANO O, GIMON R, SOSCUN H. Theoretical study of the σ-π and π-π interactions in heteroaromatic monocyclic molecular complexes of benzene, pyridine, and thiophene dimers: implications on the resin-asphaltene stability in crude oil[J]. Energy & Fuels, 2011, 25(6): 2526-2541.
22	AL-SABAGH A M, NOOR EL-DIN M R, MORSI R E, et al. Styrene-maleic anhydride copolymer esters as flow improvers of waxy crude oil[J]. Journal of Dispersion Science and Technology,2009, 30(3): 420-426.
23	ERCEGKUZMIC A, RADOSEVIC M, BOGDANIC G, et al. Studies on the influence of long chain acrylic esters polymers with polar monomers as crude oil flow improver additives[J]. Fuel,2008,87(13/14): 2943-2950.
24	李向博. 稠油油溶性降黏剂的合成与评价[D]. 北京: 北京化工大学， 2016.
24	LI X B. Synthesis and evaluation of oil-soluble viscosity reducer for heavy oil[D]. Beijing: Beijing University of Chemical Technology, 2016.
25	孟科全. 稠油降粘技术研究进展[J]. 天然气与石油, 2009, 27(3): 30-34.
25	MENG K Q. Research progress of viscosity reduction technology for heavy oil[J]. Natural Gas and Oil, 2009, 27(3): 30-34.
26	曹明，曹旦夫，吴杰，等. BEM-JN油基降黏剂作用机理与应用试验[J]. 油气储运, 2011, 30(1): 53-55.
26	CAO M, CAO D F, WU J, et al. BEM-JN oil-based viscosity reducer action mechanism and application test[J]. Oil & Gas Storage and Transportation, 2011, 30(1): 53-55.
27	陈宁宁，宋立新，郑云重，等. 新型聚合油溶性稠油降黏剂的合成及性能研究[J]. 化学试剂, 2017, 39(2): 134-136.
27	CHEN N N, SONG L X, ZHEN Y Z, et al. Study on synthesis and performance of new polymer oil-soluble heavy oil viscosity reducer[J]. Chemical Reagents, 2017, 39(2): 134-136.
28	陈照军. 新疆塔河稠油流动性改进剂的设计与应用研究[D]. 青岛: 中国石油大学(华东), 2014.
28	CHEN Z J. Design and application research of Xinjiang Tahe heavy oil fluidity improver[D]. Qingdao: China University of Petroleum, 2014.
29	杜丹丹. 大庆油溶性稠油降黏剂的合成与分析[D]. 济南: 山东大学, 2016.
29	DU D D. Synthesis and analysis of Daqing oil-soluble heavy oil viscosity reducer[D]. Jinan: Shandong University, 2016.
30	毛金成，刘佳伟，李勇明，等. 超稠油化学降黏剂研究与进展[J]. 应用化工, 2016, 45(7): 1367-1371.
30	MAO J C, LIU J W, LI Y M, et al. Research and development of super heavy oil chemical viscosity reducer[J]. Applied Chemical Industry, 2016, 45(7): 1367-1371.
31	吴本芳，郭金波. 稠油油溶性降黏剂研究进展概况[J]. 油气储运, 2003, 22(2): 1-6.
31	WU B F, GUO J B. Research progress of oil-soluble viscosity reducer for heavy oil[J]. Oil & Gas Storage and Transportation, 2003, 22(2): 1-6.
32	马高红. 重质油组分分子结构与粘温性能的关系[D]. 青岛: 中国石油大学(华东), 2015.
32	MA G H. Relationship between molecular structure of heavy oil components and viscosity-temperature performance[D]. Qingdao: China University of Petroleum, 2015.
33	王鹏, 董泽蛟, 谭忆秋, 等. 基于分子模拟的沥青蜂状结构成因探究[J]. 中国公路学报, 2016, 29(3): 9-16.
33	WANG P, DONG Z J, TAN Y Q, et al. Research on the origin of asphalt bee structure based on molecular simulation[J]. China Journal of Highway and Transport, 2016, 29(3): 9-16.
34	LI D D, GREENFIELD M L. High internal energies of proposed asphaltene structures[J]. Energy & Fuels, 2011, 25(8): 3698-3705.
35	TAKANOHASHI T, SATO S, SAITO I, et al. Molecular dynamics simulation of the heat-induced relaxation of asphaltene aggregates[J]. Energy & Fuels, 2003, 17(1): 135-139.
36	FANOURGAKIS G S, MEDINA J S, PROSMITI R. Determining the bulk viscosity of rigid water models[J]. The Journal of Physical Chemistry A, 2012, 116(10): 2564-2570.
37	刘清云. 稠油降黏-渗流改善剂的合成、性能评价与机理研究[D]. 武汉: 中国地质大学, 2018.
37	LIU Q Y. Study on the synthesis, performance and mechanism of heavy oil viscosity reduction and seepage flow improver[D].Wuhan: China University of Geosciences, 2018.
38	秦冰, 罗咏涛, 李本高, 等. 稠油油溶性降黏剂结构与性能的关系[J]. 石油与天然气化工, 2012, 41(5): 499-503.
38	QIN B, LUO Y T, LI B G, et al. Relationship between structure and performance of oil-soluble viscosity reducer for heavy oil[J]. Chemical Engineering of Oil & Gas, 2012, 41(5): 499-503.
39	陈陆建, 杨兆中. 阴离子型油溶性稠油降黏剂的合成及评价[J]. 应用化工, 2016, 45(2): 312-315.
39	CHEN L J, YANG Z Z. Synthesis and evaluation of anionic oil-soluble heavy oil viscosity reducer[J]. Applied Chemical Industry, 2016, 45(2): 312-315.
40	MAO J, LIU J, PENG Y, et al. Quadripolymers as viscosity reducers for heavy oil[J]. Energy & Fuels, 2018, 32(1): 119-124.

基于分子模拟的新型油溶性降黏剂的制备及性能优化

Preparation and performance optimization of a new viscosity-reducing agent for crude oil based on molecular simulation

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

本文评价