致密砾岩油藏CO2吞吐提高采收率可行性研究

doi:10.13809/j.cnki.cn32-1825/te.2021.06.005

Abstract

Abstract:

Based on the interactions between CO₂ and crude oil, CO₂ and conglomerate, the enhanced oil recovery（EOR） mechanism of CO₂ huff-n-puff has been revealed in Huanmahu tight conglomerate reservoir. Meanwhile, a high temperature and high pressure nuclear magnetic system was applied to monitor the change of oil saturation during experimental processes at pore scale in cores of substrates. Core fracturing and displacement system were used to investigate the effects of fractures on EOR during CO₂ huff-n-puff. The experimental results indicated that CO₂ could effectively dissolve in crude oil to replenish formation energy, reduce oil viscosity and improve wettability. Moreover, the crude oil produced in depletion development was in large pores, while that in medium pores and small pores could be effectively activated by CO₂ huff-n-puff. After depletion development, three cycles of huff-n-puff could enhance oil recovery by 23.1 %, among which the first cycle contributed most with factor of 15.1 %. The existence of fractures could increase the contact area between crude oil and CO₂ and decrease the flow resistance of crude oil, and finally the EOR is up to 27.1 %. All the results reveal the feasibility of CO₂ huff-n-puff to improve oil recovery in tight conglomerate reservoirs from pore scale.

Key words: enhanced oil recovery（EOR）, CO₂ huff-n-puff, tight conglomerate reservoir, fractures, NMR, three-dimensional physical simulation

CLC Number:

TE38

Xibin FAN,Wanfen PU,Jiangtao SHAN, et al. Feasibility of enhanced oil recovery by CO₂ huff-n-puff in tight conglomerate reservoir[J]. Petroleum Reservoir Evaluation and Development, 2021, 11(6): 831-836.

Figures/Tables 11

Table 1

Table 2

Fig. 1

Table 3

Fig. 2

Fig. 3

Fig. 4

Table 4

Fig. 5

Fig. 6

Fig. 7

References 23

[1]	SONG C Y, YANG D Y. Experimental and numerical evaluation of CO₂ huff-n-puff processes in Bakken formation[J]. Fuel, 2017, 190:145-162. doi: 10.1016/j.fuel.2016.11.041
[2]	Xu C F, Liu H X, Qian G B, et al. Microcosmic mechanisms of water-oil displacement in conglomerate reservoirs in Karamay Oilfield, NW China[J]. Petroleum Exploration and Development, 2011, 38(6):725-32. doi: 10.1016/S1876-3804(12)60006-8
[3]	林森虎, 邹才能, 袁选俊, 等. 美国致密油开发现状及启示[J]. 岩性油气藏, 2011, 23(4):25-32.
	LIN Senhu, ZOU Caineng, YUAN Xuanjun, et al. Status quo of tight oil exploitation in the United States and its implication[J]. Lithologic Reservoirs, 2011, 23(4):25-32.
[4]	DU D J, PU W F, JIN F Y, et al. Experimental study on EOR by CO₂ huff-n-puff and CO₂ flooding in tight conglomerate reservoirs with pore scale[J]. Chemical Engineering Research and Design, 2020, 156:425-432. doi: 10.1016/j.cherd.2020.02.018
[5]	MA J H, WANG X Z, GAO R M, et al. Enhanced light oil recovery from tight formations through CO₂ huff ‘n’ puff processes[J]. Fuel, 2015, 154:35-44. doi: 10.1016/j.fuel.2015.03.029
[6]	LUO S, XU R N, JIANG P, et al. Visualization experimental investigations of supercritical CO₂ inject into porous media with the fissure defect[J]. Energy Procedia, 2011, 4:4411-4417. doi: 10.1016/j.egypro.2011.02.394
[7]	战菲, 宋考平, 尚文涛, 等. 低渗透油藏单井CO₂吞吐参数优选研究[J]. 特种油气藏, 2010, 17(5):70-72.
	ZHAN Fei, SONG Kaiping, SHANG Wentao, et al. Parameter optimization of single well CO₂ huff and puff for low permeability reservoir[J]. Special Oil & Gas Reservoirs, 2010, 17(5):70-72.
[8]	马亮亮. CO₂吞吐提高低渗透油藏采收率技术[J]. 大庆石油地质与开发, 2012, 31(4):144-148.
	MA Liangliang. CO₂ huff-and-puff EOR technique for low-permeability oil reservoir[J]. Petroleum Geology & Oilfield Development in Daqing, 2012, 31(4):144-148.
[9]	赵继勇, 樊建明, 何永宏, 等. 超低渗—致密油藏水平井开发注采参数优化实践——以鄂尔多斯盆地长庆油田为例[J]. 石油勘探与开发, 2015, 42(1):68-75.
	ZHAO Jiyong, FAN Jianming, HE Yonghong, et al. Optimization of horizontal well injection-production parameters for ultra-low permeable-tight oil production: A case from Changqing Oilfield, Ordos Basin[J]. Petroleum Exploration and Development, 2015, 42(1):68-75.
[10]	谢灵. 致密油藏高效驱油体系优选实验研究——以吉木萨尔致密油为例[D]. 北京:中国石油大学(北京),2016.
	XIE Ling. The optimization of enhancing oil recovery method for tight oil-a case of Jimusar tight oil reservoir[D]. Beijing: China University of Petroleum(Beijing), 2016.
[11]	张越琪, 苟利鹏, 乔文波, 等. 致密油藏超临界二氧化碳吞吐开发特征实验研究[J]. 特种油气藏, 2021, 28(1):130-135.
	ZHANG Yueqi, GOU Lipeng, QIAO Wenbo, et al. Experimental study on development characteristics of supercritical carbon dioxide huff and puff in tight reservoirs[J]. Special Oil & Gas Reservoirs, 2021, 28(1):130-135.
[12]	贾瑞轩, 孙灵越, 苏致新, 等. 二氧化碳吞吐致密油藏的可动用性[J]. 断块油气藏, 2020, 27(4):504-508.
	JIA Ruixuan, SUN Lingyue, SU Zhixin, et al. Availability of CO₂ huff and puff in tight reservoir[J]. Fault-Block Oil & Gas Field, 2020, 27(4):504-508.
[13]	邓宝康, 李军建, 高银山, 等. 鄂尔多斯盆地致密油藏注CO₂吞吐微观剩余油分布特征[J]. 大庆石油地质与开发, 2020, 39(6):1-7.
	DENG Baokang, LI Junjian, GAO Yinshan, WANG Xinxing, et al. Microscopic remained oil distribution characteristics of CO₂ huff and puff in the tight oil reservoir in Ordos Basin[J]. Petroleum Geology & Oilfield Development in Daqing, 2020. 39:1-7.
[14]	姜俊帅, 刘庆杰, 王家禄. 致密油藏二氧化碳吞吐有效作用半径计算方法[J]. 科学技术与工程, 2020, 20(6):2216-2222.
	JIANG Junshuai, LIU Qingjie, WANG Jialu. Calculation method for effective radius of carbon dioxide huff and puff in tight reservoirs[J]. Science Technology and Engineering, 2020, 20(6):2216-2222.
[15]	梅华. 致密油藏注 CO₂提高采收率机理及数值模拟分析[J]. 化工管理, 2017(16):224-224.
	MEI Hua. Mechanism and numerical simulation analysis of enhanced oil recovery by CO₂ injection in tight reservoirs[J]. Chemical Enterprise Management, 2017(6):224-224.
[16]	李龙龙, 景忠峰, 赵旭东, 等. Y油田长7致密油CO₂吞吐效果认识[J]. 石油化工应用, 2018, 37(1):46-48.
	LI Longlong, JING Zhongfeng, ZHAO Xudong, et al. Understanding of CO₂ huff and puff effect of Chang 7 tight oil in Y oilfield[J]. Petrochemical Industry Application, 2018, 37(1):46-48.
[17]	左翼. 致密油藏CO₂吞吐适应性评价方法及参数优化研究[D]. 北京:中国石油大学(北京), 2018.
	ZUO Yi. Study on adaptability evaluation method and optimization of CO₂ huff-and-puff process in tight oil reservoirs[D]. Beijing: China University of Petroleum(Beijing), 2018.
[18]	ZHANG X, WEI B, SHANG J, et al. Alterations of geochemical properties of a tight sandstone reservoir caused by supercritical CO₂-brine-rock interactions in CO₂-EOR and geosequestration[J]. Journal of CO₂ Utilization, 2018, 28:408-418.
[19]	WDOWIN M, TARKOWSKI R, FRANUS W. Determination of changes in the reservoir and cap rocks of the Chabowo Anticline caused by CO₂-brine-rock interactions[J]. International journal of coal geology, 2014, 130:79-88. doi: 10.1016/j.coal.2014.05.010
[20]	ZOU Y S, LI S H, MA X F, et al. Effects of CO₂-brine-rock interaction on porosity/permeability and mechanical properties during supercritical-CO₂ fracturing in shale reservoirs[J]. Journal of Natural Gas Science and Engineering, 2018, 49:157-168. doi: 10.1016/j.jngse.2017.11.004
[21]	CHEN Y Q, AHMAD S, XIE Q, et al. Excess H⁺ increases hydrophilicity during CO₂-assisted enhanced oil recovery in sandstone reservoirs[J]. Energy Fuels, 2019, 33(2):814-821. doi: 10.1021/acs.energyfuels.8b03573
[22]	CHEN Y Q, AHMAD S, XIE Q, et al. Insights into the wettability alteration of CO₂-assisted EOR in carbonate reservoirs[J]. Journal of Molecular Liquids, 2019, 279:420-426. doi: 10.1016/j.molliq.2019.01.112
[23]	CHEN Y Q, XIE Q, PU W F, et al. Drivers of pH increase and implications for low salinity effect in sandstone[J]. Fuel, 2018, 218:112-117. doi: 10.1016/j.fuel.2018.01.037

组分	摩尔含量	组分	摩尔含量
C₁	83.98	C₄	0.42
C₂	5.73	C₅	0.17
C₃	0.88	N₂	8.82

CO₂摩尔含量（%）	GOR （m³/m³）	p_b （MPa）	膨胀系数	黏度（mPa·s）
0	68	15	1.149	0.673
4.55	72.33	15.65	1.166	0.646
10.09	84.31	16.17	1.194	0.617
19.34	109	16.81	1.248	0.539
32.96	146	17.54	1.358	0.426
48.26	210	18.52	1.557	0.324

反应时间（h）	石英（%）	钾长石（%）	斜长石（%）	黏土含量（%）
0	36.0	18.3	22.6	23.1
20	36.9	17.0	21.8	24.3
45	36.2	15.1	21.1	27.6
70	36.3	12.3	19.9	31.5
95	37.2	9.7	19.3	33.8

Feasibility of enhanced oil recovery by CO₂ huff-n-puff in tight conglomerate reservoir

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 11

References 23

Related Articles 15

Metrics

Comments

Recommended 0

[1]	ZHANG Fei, LI Qiuzheng, JIANG Aming, DENG Ci. Application of shale oil 2D NMR logging evaluation in Huazhuang area of Gaoyou Sag [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(5): 707-713.
[2]	SUN Yaxiong,ZHU Xiangyu,QIU Xuming,LIU Qidong,DUAN Hongliang,QIU Yongfeng,GONG Lei. Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 414-424.
[3]	TANG Huiying, DI Kaixiang, ZHANG Liehui, GUO Jingjing, ZHANG Tao, TIAN Ye, ZHAO Yulong. Tight oil imbibition based on nuclear magnetic resonance signal calibration method [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(3): 402-413.
[4]	XU Guochen,DU Juan,ZHU Mingchen. Practice and understanding of water huff-n-puff in shale oil of Subei Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(2): 256-266.
[5]	CUI Chuanzhi, LI Huailiang, WU Zhongwei, ZHANG Chuanbao, LI Hongbo, ZHANG Yinghua, ZHENG Wenkuan. Analysis of pressures in water injection wells considering fracture influence induced by pressure-drive water injection [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 686-694.
[6]	LI Jingchang, LU Ting, NIE Haikuan, FENG Dongjun, DU Wei, SUN Chuanxiang, LI Wangpeng. Confidence evaluation of fractures seismic detection in shale gas formations on WY23 Pad in Weirong [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 614-626.
[7]	CHEN Xiulin, WANG Xiuyu, XU Changmin, ZHANG Cong. CO₂ sequestration morphology and distribution characteristics based on NMR technology and microscopic numerical simulation [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(3): 296-304.
[8]	YANG Yubin,XIAO Wenlian,HAN Jian,GOU Ling,LI Min,ZHOU Keming,OUYANG Mukun,CHEN Li. Gas-water flow characteristics and influencing factors of tight sandstone in Danfengchang Gas Field [J]. Reservoir Evaluation and Development, 2022, 12(2): 356-364.
[9]	LEI Yangyang,WANG Hui,WU Xin,YANG Li,SHI Le,WANG Shuai. Analysis of fracture geometry for refractured vertical wells in tight conglomerate reservoir [J]. Petroleum Reservoir Evaluation and Development, 2021, 11(5): 782-792.
[10]	Du Yang,Lei Wei,Li Li,Zhao Zhejun,Ni Jie,Liu Tong. Post-frac production control and drainage technology of deep shale gas wells [J]. Reservoir Evaluation and Development, 2021, 11(1): 95-101.
[11]	WANG Zhengxin,ZHANG Lianfeng,YANG Lu,LIU Yanhua,LU Jun,ZHANG Zhuo. Heterogeneous combination flooding system for reservoir after polymer flooding in Shuanghe Oil Filed [J]. Reservoir Evaluation and Development, 2020, 10(6): 78-84.
[12]	HE Anle,ZOU Chunmei,CUI Yinan,YAN Jun,ZHANG Hewen,TANG Yong. Research on enhancing condensate oil production by CO₂ huff-n-puff in South A condensate gas reservoir of Zanarol Oilfield [J]. Reservoir Evaluation and Development, 2020, 10(3): 28-32.
[13]	Wang Jun. Dicussion on well selection conditions of CO₂ huff and puff in low permeability reservoir [J]. Reservoir Evaluation and Development, 2019, 9(3): 57-61.
[14]	Li Yongming,Wu Lei,Chen Xi. Research on productivity of fractured horizontal wells in shale gas reservoirs based on anomalous diffusion model [J]. Reservoir Evaluation and Development, 2019, 9(1): 72-79.
[15]	He Siyuan,Zhao Liqiang,Luo Zhifeng,Li Jun,Li Hua. Study on indoor gas measurement of supporting fracture conductivity of tight sandstone [J]. Reservoir Evaluation and Development, 2018, 8(6): 45-50.

Feasibility of enhanced oil recovery by CO2 huff-n-puff in tight conglomerate reservoir

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 11

References 23

Related Articles 15

Metrics

Comments

Recommended 0

Feasibility of enhanced oil recovery by CO₂ huff-n-puff in tight conglomerate reservoir