Numerical investigation of single- and two-phase flow in porous media with a bifurcated fracture

doi:10.1063/5.0052229

	Numerical investigation of single- and two-phase flow in porous media with a bifurcated fracture
	Zhu, Zhengwen 1,2; Liu, Jianjun 3; Liu, Hejuan 3; Wu, Mingyang 4; Song, Zhenlong 5
刊名	PHYSICS OF FLUIDS
	2021-05-01
卷号	33 期号:5 页码:14
ISSN号	1070-6631
DOI	10.1063/5.0052229
英文摘要	Considering that fractures arising from fracturing systems have bifurcation characteristics, mathematical models for single- and two-phase flow in porous media with a bifurcated fracture (BFPM) were established. The phase-field method was adopted to trace the oil-water interface, and the influence of fracture morphology, boundary conditions, gravity, and wettability on imbibition in BFPM was discussed. The results are as follows: (1) during single-phase flow in BFPM, the velocity in the bifurcated fracture was several orders of magnitude greater than that in the matrix. (2) Imbibition in BFPM includes countercurrent imbibition and the combination of co-current and countercurrent imbibition. The bifurcated fracture produces an increase in matrix pores that participate in imbibition, thus increasing the oil recovery factor by approximately 30% during simulation. (3) Closing an outlet of the bifurcated fracture has minimal effect on imbibition during the early stage (approximately the first 6 s) and an inhibitory effect during the middle and late stages (after 6 s), which leads to a decrease in oil recovery factor. (4) When the surface tension value is low (0.1 and 1mN/m), disregarding the effect of gravity during imbibition results in an overestimated oil recovery factor value, while a large surface tension value (20 and 25mN/m) produces the opposite effect. (5) Similar to the laws followed in porous media with pure pores and a single fracture, improving BFPM wettability increases the oil recovery factor value. This study can provide guidance for the production of low-permeability reservoirs.
资助项目	National Natural Science Foundation of China[42004036] ; National Natural Science Foundation of China[51874053] ; National Natural Science Foundation of China[51804049]
WOS研究方向	Mechanics ; Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000677499600014
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27607]
专题	中科院武汉岩土力学所
作者单位	1.Southwest Petr Univ, Sch Geosci & Technol, Chengdu 610500, Sichuan, Peoples R China 2.Sichuan Inst Ind Technol, Inst Architectural Engn, Deyang 618500, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Chongqing Univ, Sch Resources & Safety Engn, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400030, Peoples R China 5.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Zhengwen,Liu, Jianjun,Liu, Hejuan,et al. Numerical investigation of single- and two-phase flow in porous media with a bifurcated fracture[J]. PHYSICS OF FLUIDS,2021,33(5):14.
APA	Zhu, Zhengwen,Liu, Jianjun,Liu, Hejuan,Wu, Mingyang,&Song, Zhenlong.(2021).Numerical investigation of single- and two-phase flow in porous media with a bifurcated fracture.PHYSICS OF FLUIDS,33(5),14.
MLA	Zhu, Zhengwen,et al."Numerical investigation of single- and two-phase flow in porous media with a bifurcated fracture".PHYSICS OF FLUIDS 33.5(2021):14.