唐晓东,毛乾斌,李小雨,杨福祥,李晶晶
TANG Xiaodong,MAO Qianbin,LI Xiaoyu,YANG Fuxiang,LI Jingjing

• 1:西南石油大学化学化工学院
• 2:油气藏地质及开发工程国家重点实验室

摘要(Abstract)：

针对稠油热采存在油汽比低、能耗大、CO_2排放高以及稠油冷采采出液难处理等问题，采用自制的降黏驱油剂ODA1配制驱替液，对其进行了静态降黏评价、性能分析以及特稠油冷采物理模拟实验研究。结果表明：提高驱替液中ODA1的质量分数和矿化度，均能有效降低稠油黏度；当驱替液中ODA1质量分数为2%、矿化度为100 g/L时，特稠油与驱替液以质量比为0.5混合后的降黏率达到了70.62%；特稠油在驱替液表面自发扩散，油水自动分相，完全不乳化。在渗透率约为1 000×10~(-3)μm~2、地层温度为40℃、特稠油黏度为11 600 m Pa·s条件下进行模拟驱油实验，驱替液驱的采出程度较模拟地层水驱采出程度提高了6.31百分点；水驱后驱替液依次进行转驱、第1次闷井和第2次闷井，采出程度分别提高了7.48、11.70和7.83百分点，合计较水驱提高了27.02百分点，采出稠油在40℃条件下的黏度降至3 553 m Pa·s，降黏率达61.37%，驱替液具有边驱油边降黏的特点。同时在冷采过程中无碳排放，采出水无污染，可循环利用。研究成果为特稠油绿色冷采提供了一种新的技术思路。
In view of the problems of low oil-steam ratio, high energy consumption and high CO_2 emission of heavy oil thermal recovery, and difficult treatment of produced fluid of heavy oil cold production, a displacement fluid is prepared by using self-made viscosity-reducing displacement agent(ODA-1), with static viscosity reduction evaluation, performance analysis, and physical simulation experiment for extra-heavy oil cold production. The results show that increasing mass fraction and salinity of ODA-1 in displacement fluid can both effectively reduce the viscosity of extra-heavy oil. With mass fraction of 2% and salinity of 100 g/L of ODA-1 in displacement fluid, viscosity reduction rate reaches 70.62% after extra-heavy oil mixed with displacement fluid at mass ratio of 0.5. Extra-heavy oil spontaneously diffuses on the surface of displacement fluid, and oil and water phases automatically separate with no emulsification. Displacement simulation experiment is conducted under the conditions of permeability of about 1 000×10~(-3) μm~2, formation temperature of 40 ℃ and extra-heavy oil viscosity of 11 600 mPa·s, and recovery degree of displacement fluid flooding is 6.31 percentage points than that of simulated formation water flooding. Water flooding is followed successively by converted displacement fluid flooding, the first soak and the second soak, with recovery degree increased by 7.48, 11.70 and 7.83 percentage points respectively, and total increase of 27.02 percentage points of water flooding. The viscosity of produced heavy oil reduces to 3 553 mPa·s at the temperature of 40 ℃, with viscosity reduction rate reached 61.37%. Displacement fluid is characterized by simultaneous viscosity reduction and oil displacement. There is no carbon emission during cold production process, with produced water contamination-free and recyclable. The research provides new technical approach for green cold production of extraheavy oil.

关键词(KeyWords)： 特稠油;驱替液;降黏;冷采;提高采收率
extra-heavy oil;displacement fluid;viscosity reduction;cold production;enhance oil recovery

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气股份有限公司重大科技专项“蒸汽吞吐低效油藏改善开发效果新技术研究与应用”（2019B-407）

作者(Author): 唐晓东,毛乾斌,李小雨,杨福祥,李晶晶
TANG Xiaodong,MAO Qianbin,LI Xiaoyu,YANG Fuxiang,LI Jingjing

DOI: 10.19597/J.ISSN.1000-3754.202308028

参考文献(References)：

• [1]杨勇.胜利油田稠油开发技术新进展及发展方向[J].油气地质与采收率，2021,28(6):1-11.YANG Yong.New progress and next development directions of heavy oil development technologies in Shengli Oilfield[J].Petroleum Geology and Recovery Efficiency,2021,28(6):1-11.
• [2]徐君，杨春，孟鹏飞.吐哈探区非常规油气资源开发策略[J].新疆石油地质，2023,44(3):314-320.XU Jun,YANG Chun,MENG Pengfei.Development strategies of unconventional oil and gas resources in Turpan-Hami exploration area[J].Xinjiang Petroleum Geology,2023,44(3):314-320.
• [3]ZHAO D W,WANG J,GATES I D.Thermal recovery strategies for thin heavy oil reservoirs[J].Feul,2014,117:431-441.
• [4]方吉超，李晓琦，计秉玉，等.中国稠油蒸汽吞吐后提高采收率接替技术前景[J].断块油气田，2022,29(3):378-382,389.FANG Jichao,LI Xiaoqi,JI Bingyu.Prospect of replacement technology for enhanced oil recovery after cyclic steam stimulation of heavy oil in China[J].Fault-Block Oil&Gas Field,2022,29(3):378-382,389.
• [5]赵洪岩，葛明曦，张鸿.辽河油田超稠油蒸汽驱技术界限研究与应用[J].特种油气藏，2022,29(2):98-103.ZHAO Hongyan,GE Mingxi,ZHANG Hong.Research and application of steam flooding technical limit for super heavy oil in Liaohe Oilfield[J].Special Oil&Gas Reservoirs,2022,29(2):98-103.
• [6]郭省学.CO2改善单56超稠油油藏蒸汽吞吐效果实验[J].大庆石油地质与开发，2018,37(4):122-126.GUO Shengxue.Experiment of CO2 improved steam huff and puff effects for Shan-56 ultra-heavy oil reservoir[J].Petroleum Geology&Oilfield Development in Daqing,2018,37(4):122-126.
• [7]孙焕泉，刘慧卿，王海涛，等.中国稠油热采开发技术与发展方向[J].石油学报，2022,43(11):1664-1674.SUN Huanquan,LIU Huiqing,WANG Haitao,et al.Development technology and direction of thermal recovery of heavy oil in China[J].Acta Petrolei Sinica,2022,43(11):1664-1674.
• [8]赵健，张娜，蒋海岩，等.稠油高压火驱氧化特性实验研究[J].油气地质与采收率，2023,30(3):145-151.ZHAO Jian,ZHANG Na,JIANG Haiyan,et al.Experimental study on oxidation characteristics of heavy oil reservoirs by highpressure in-situ combustion[J].Petroleum Geology and Recovery Efficiency,2023,30(3):145-151.
• [9]李培武，曹峻博，张崇刚，等.重力泄水辅助蒸汽驱开采机理及油藏工程设计[J].大庆石油地质与开发，2023,42(4):99-104.LI Peiwu,CAO Junbo,ZHANG Chonggang,et al.Development mechanism of gravity water-drainage assisted steam flooding and reservoir engineering design[J].Petroleum Geology&Oilfield Development in Daqing,2023,42(4):99-104.
• [10]丁超，杨兆臣，吴永彬，等.SAGD蒸汽腔扩展阶段电加热机理及操作参数优化[J].特种油气藏，2022,29(3):124-130.DING Chao,YANG Zhaochen,WU Yongbin,et al.Electric heating mechanism and operating parameter optimization in the expansion stage of SAGD steam chamber[J].Special Oil&Gas Reservoirs,2022,29(3):124-130.
• [11]关文龙，蒋有伟，郭二鹏，等.“双碳”目标背景下的稠油开发对策[J].石油学报，2023,44(5):826-840.GUAN Wenlong,JIANG Youwei,GUO Erpeng,et al.Heavy oil development strategy under the“Carbon Peaking and Carbon Neutrality”target[J].Acta Petrolei Sinica,2023,44(5):826-840.
• [12]GATES I D,LARTER S R.Energy efficiency and emissions intensity of SAGD[J].Fuel,2014,115:706-713.
• [13]王焱伟，刘慧卿，东晓虎，等.边水稠油油藏蒸汽吞吐后转冷采物理模拟研究[J].西南石油大学学报（自然科学版），2020,42(1):91-100.WANG Yanwei,LIU Huiqing,DONG Xiaohu,et al.Physical simulation of cold recovery of edge water heavy oil reservoir after steam stimulation[J].Journal of Southwest Petroleum University(Natural Science Edition),2020,42(1):91-100.
• [14]宋传真，鲁新便，侯吉瑞，等.塔河油田缝洞型油藏耐高温耐高盐强化泡沫体系研制与性能评价[J].油气地质与采收率，2023,30(5):76-83.SONG Chuanzhen,LU Xinbian,HOU Jirui,et al.Preparation and performance evaluation of reinforced foam system with high temperature resistance and high salt tolerance in fracture-cavity reservoirs in Tahe Oilfield[J].Petroleum Geology and Recovery Efficiency,2023,30(5):76-83.
• [15]张金风，梁成钢，陈依伟，等.表面活性剂对页岩油储层高温高压渗吸驱油效果的影响因素[J].大庆石油地质与开发，2023,42(3):167-174.ZHANG Jinfeng,LIANG Chenggang,CHEN Yiwei,et al.Influencing factors of surfactant on high-temperature and high-pressure imbibition displacement effect of shale oil reservoir[J].Petroleum Geology&Oilfield Development in Daqing,2023,42(3):167-174.
• [16]王凤娇，徐贺，刘义坤，等.浅薄层普通稠油油藏聚合物驱提高采收率研究与应用[J].特种油气藏，2023,30(1):107-113.WANG Fengjiao,XU He,LIU Yikun,et al.Study and application of polymer flooding for enhanced oil recovery in shallow ordinary heavy oil reservoirs[J].Special Oil&Gas Reservoirs,2023,30(1):107-113.
• [17]曹绪龙，季岩峰，祝仰文，等.聚合物驱研究进展及技术展望[J].油气藏评价与开发，2020,10(6):8-16.CAO Xulong,JI Yanfeng,ZHU Yangwen,et al.Research advance and technology outlook of polymer flooding[J].Reservoir Evaluation and Development,2020,10(6):8-16.
• [18]李晶晶，邓昌联，唐晓东，等.稠油减氧空气泡沫驱注入参数优化及现场应用[J].特种油气藏，2020,27(4):131-135.LI Jingjing,DENG Changlian,TANG Xiaodong,et al.Injection parameter optimization of deoxidized air foam flooding for heavy oil reservoir and its field application[J].Special Oil&Gas Reservoirs,2020,27(4):131-135.
• [19]黄琴，蔡晖，桑丹，等.海上稠油油田水平井多轮蒸汽吞吐生产规律研究[J].非常规油气，2023,10(2):76-79,100.HUANG Qin,CAI Hui,SANG Dan,et al.Study on development law of horizontal well multiple cyclic steam stimulation for offshore heavy oilfields[J].Unconventional Oil&Gas,2023,10(2):76-79,100.
• [20]李晓宇，孙晓飞，蔡佳明，等.海上稠油超临界多元热流体驱油特征物理模拟[J].断块油气田，2023,30(4):545-551.LI Xiaoyu,SUN Xiaofei,CAI Jiaming,et al.Physical simulation study on oil flooding characteristics of supercritical multiplethermal fluids in offshore heavy oil reservoirs[J].Fault-Block Oil&Gas Field,2023,30(4):545-551.
• [21]唐晓东，许可，罗中，等.稠油胶体体系的研究与应用进展[J].油田化学，2013,30(2),306-311.TANG Xiaodong,XU Ke,LUO Zhong,et al.Research and application of heavy oil colloidal system[J].Oilfield Chemistry,2013,30(2),306-311.
• [22]刘合，曹刚.新时期采油采气工程科技创新发展的挑战与机遇[J].石油钻采工艺，2022,44(5):529-539.LIU He,CAO Gang.Opportunities and challenges for scientific and technological innovation and development of oil and gas production engineering in the new era[J].Oil Drilling&Production Technology,2022,44(5):529-539.
• [23]唐晓东.石油加工助剂作用原理与应用[M].北京：石油工业出版社，2004.TANG Xiaodong.Principle and application of petroleum processing AIDS[M].Beijing:Petroleum Industry Press,2004.
• [24]CHACóN-PATI?O M L,VESGA-MARTíNEZ S J,BLANCO-TIRADO C,et al.Exploring occluded compounds and their interactions with asphaltene networks using high-resolution mass spectrometry[J].Energy&Fuels,2016,30(6):4550-4561.
• [25]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.