Experiment of DME Water Flooding Enhanced Recovery of Heavy Oil Reservoirs

doi:10.3969/j.issn.1006-6535.2023.03.012

Abstract

Abstract: In order to study the stimulation mechanism of dimethyl ether (DME) in the development of heavy oil reservoir, reveal its mass transfer law in both oil and water phases and its swelling and viscosity reduction effect on heavy oil, a heavy oil sample from a certain block in Dagang Oilfield was selected to carry out PVT and sand-packed tube displacement experiments under high temperature and high pressure conditions. The results show that DME is a good viscosity reducer for heavy oil, easily dissolved in water and more easily dissolved in crude oil, and has strong diffusion effect in both oil and water phases; the water can be used as a carrier to inject DME into the subsurface, and the carrying capacity of DME can be increased by adding ethanol or ethylene glycol; for heavy oil with low viscosity, the DME water flooding can be carried out on the basis of water flooding, with significant oil increase effect, while for heavy oil with high viscosity that cannot form effective drive For heavy oil with high viscosity that cannot form effective displacement, the water or CO₂ can be considered as a carrier for DME huff-n-puff. The study results are of great significance for the application of DME in the production of heavy oil.

Key words: DME, heavy oil, swelling and viscosity reduction, dissolution and diffusion, distribution coefficient, production mechanism, enhanced recovery

CLC Number:

TE345

Zhang Liang, Wei Huchao, Zhang Xiangfeng, Shi Zhenpeng, Zhao Zezong, Wang Xiaoyan, Zhang Yang, Yang Hongbin. Experiment of DME Water Flooding Enhanced Recovery of Heavy Oil Reservoirs[J]. Special Oil & Gas Reservoirs, 2023, 30(3): 97-105.

References

[1] CHERNETSKY A,MASALMEH S,EIKMANS D,et al.A novel enhanced oil recovery technique:experimental results and modelling workflow of the DME enhanced waterflood technology[C].SPE177919,2015:1-12.
[2] SEMELSBERGER T A,BORUP R L,GREENE H L.Dimethyl ether (DME) as an alternative fuel[J].Journal of power sources,2006,156(2):497-511.
[3] 李伟,张希良.国内二甲醚研究述评[J].煤炭转化,2007,30(3):88-95.
LI Wei,ZHANG Xiliang.Review of dimethyl ether researches in China[J].Coal Conversion,2007,30(3):88-95.
[4] 胡益之,李洪晋,韩冬青.21世纪洁净燃料——二甲醚[J].煤化工,2006,18(5):10-14.
HU Yizhi,LI Hongjin,HAN Dongqing.Dimethyl ether-the clean fuel in the 21st Century[J].Coal Chemical Industry,2006,18(5):10-14.
[5] 赵骧,佟濬芳,蒋燕清.国内外二甲醚市场现状与发展前景[J].化肥工业,2005,32(4):10-17,24.
ZHAO Xiang,TONG Junfang,JIANG Yanqing.Present status of dimethyl ether market at home and abroad and prospects for its development[J].Chemical Fertilizer Industry,2005,32(4):10-17,24.
[6] 刘艳娜,龙丽,肖松.二甲醚替代石油液化气的可行性研究[J].昆明理工大学学报(自然科学版),2014,39(5):54-57.
LIU Yanna,LONG Li,XIAO Song.Feasibility study of dimethyl ether replacing liquefied petroleum gas[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2014,39(5):54-57.
[7] 薛晓军,贾广信,何俊辉,等.二甲醚与合成气反应制乙醇的热力学计算与分析[J].化工进展,2014,33(5):1160-1163.
XUE Xiaojun,JIA Guangxin,HE Junhui,et al.Thermodynamics of ethanol synthesis from dimethyl ether and syngas[J].Chemical Industry and Engineering Progress,2014,33(5):1160-1163.
[8] ARCOUMANIS C,BAE C,CROOKES R,et al.The potential of di-methyl ether(DME)as an alternative fuel for compression-ignition engines:a review[J].Fuel,2008,87:1014-1030.
[9] RATNAKAR R R,DINDORUK B,WILSON L.Experimental investigation of DME-water-crude oil phase behavior and PVT modeling for the application of DME-enhanced waterflooding[J].Fuel,2016,182:188-197.
[10] RATNAKAR R R,DINDORUK B,WILSON L.Use of DME as an EOR agent:experimental and modeling study to capture interactions of DME,brine and crudes at reservoir conditions[C].SPE181515,2016:1-15.
[11] RATNAKAR R R,DINDORUK B,WILSON L C.Phase behavior experiments and PVT modeling of DME-brine-crude oil mixtures based on Huron-Vidal mixing rules for EOR applications[J].Fluid Phase Equilibria,2017,434:49-62.
[12] HADDADNIA A,AZINFAR B,ZIRRAHI M,et al.Thermophysical properties of dimethyl ether/Athabasca bitumen system[J].The Canadian Journal of Chemical Engineering,2018,96(2):597-604.
[13] CHAHARDOWLI M,FARAJZADEH R,MASALMEH S K,et al.A novel enhanced oil recovery technology using dimethyl ether/brine:spontaneous imbibition in sandstone and carbonate rocks[C].SPE181340,2016:1-22.
[14] JAVANMARD H,SEYYEDI M,NIELSEN S M.On oil recovery mechanisms and potential of DME-brine injection in the North Sea Chalk oil reservoirs[J].Industrial & Engineering Chemistry Research,2018,57(46):15898-15908.
[15] GROOT J,EIKMANS D,FADILI A,et al.Field-Scale modelling and sensitivity analysis of DME enhanced waterflooding[C].SPE179798,2016:1-14.
[16] 李淼,周雨双,赵永强,等.塔里木盆地玉北地区奥陶系缝洞充填方解石地球化学特征及其储层流体分析[J].石油实验地质,2022,44(4):593-602.
LI Miao,ZHOU Yushuang,ZHAO Yongqiang,et al.Geochemical characteristics and fluid origins of fracture- and cave-filling calcites of Ordovician in Yubei Area, Tarim Basin[J].Petroleum Geology &Experiment,2022,44(4):593-602.
[17] 夏瑜,陈浩,单理军,等.基于含水率定量计算的低渗气藏流体性质判别方法[J].断块油气田,2021,28(3):383-386.
XIA Yu,CHEN Hao,SHAN Lijun,et al.Fluid property discrimination method based on quantitative calculation of water cut for low permeability gas reservoir[J].Fault-Block Oil & Gas Field,2021,28(3):383-386.
[18] 周凯,陈西泮,屈兴勃.页岩储层微观孔隙、流体测定方法及吸附-解吸实验:以鄂尔多斯榆林地区盒8段储层为例[J].大庆石油地质与开发,2022,41(2):139-146.
ZHOU Kai,CHEN Xipan,QU Xingbo.Determining methods of micro pore and liquids and adsorption desorption experiment for shale reservoir:taking Member He-8 reservoir in Ordos Yulin Area as an example[J].Petroleum Geology & Oilfield Development in Daqing,2022,41(2):139-146.
[19] 吕建荣,丁振华,张德富,等.基于修正的SRK状态方程预测纳米孔中二元流体的界面张力[J].大庆石油地质与开发,2021,40(6):87-94.
LYU Jianrong,DING Zhenhua,ZHANG Defu,et al.Prediction of the interfacial tension for the binary fluid in nanopores based on the modified SRK equation of state[J].Petroleum Geology & Oilfield Development in Daqing,2021,40(6):87-94.
[20] 李凤霞,黄志文,纪国法,等.缝网结构与流体对页岩导流能力影响的实验研究[J].非常规油气,2021,8(6):40-45.
LI Fengxia,HUANG Zhiwen,JI Guofa,et al.Experimental study on the influence of shale fracture network structure and fluid on conductivity[J].Unconventional Oil & Gas,2021,8(6):40-45.
[21] 冯祥,宫汝祥,李敬松.多元热流体吞吐井间气窜程度表征与预测研究[J].非常规油气,2018,5(6):55-61.
FENG Xiang,GONG Ruxiang,LI Jingsong.Study on the characterization and prediction of gas channeling in multiple thermal fluid[J].Unconventional Oil & Gas,2018,5(6):55-61.
[22] 李恒,马焕英,李家骏,等.海上油田水平井流体成像测井资料解释方法研究[J].石油地质与工程,2022,36(5):41-45.
LI Heng,MA Huanying,LI Jiajun,et al.Interpretation method of luid imaging logging data in horizontal wells for offshore oilfields[J].Petroleum Geology & Engineering,2022,36(5):41-45.
[23] 李国,于中奇,傅海荣,等.大庆油田入井流体生成硫化氢影响因素分析实验[J].石油地质与工程,2022,36(2):102-106.
LI Guo,YU Zhongqi,FU Hairong,et al.Experimental analysis on the influencing factors of hydrogen sulfide produced by entry well fluids in Daqing Oilfield[J].Petroleum Geology & Engineering,2022,36(2):102-106.
[24] 樊东红,黄玛莉,郭平生.空气密度测量的一种新方法[J].广西物理,2007,27(1):34-35.
FAN Donghong,HUANG Mali,GUO Pingsheng.A new method of air density measurement[J].Guangxi Physics,2007,27(1):34-35.
[25] 张万平,熊可嘉,肖国权.二甲醚热物理特性的比较研究[J].能源工程,2008,27(3):16-20.
ZHANG Wanping,XIONG Kejia,XIAO Guoquan.Comparative research on the thermophysical properties of dimethyl ether[J].Energy Engineering,2008,27(3):16-20.
[26] RENNER T A.Measurement and correlation of diffusion coefficients for CO₂ and rich-gas applications[J].SPE reservoir engineering,1988,3(2):517-523.
[27] ZHANG Y P,HYNDMAN C L,MAINI B B.Measurement of gas diffusivity in heavy oils[J].Journal of Petroleum Science and Engineering,2000,25(1):37-47.
[28] TENG H,MCCANDLESS J C,SCHNEYER J B.Viscosity and lubricity of (liquid) dimethyl ether-an alternative fuel for compression-ignition engines[J].SAE Transactions,2002,111(1):325-334.