Experiments on the influences of well pattern on water flooding characteristics of dissolution vug-cave reservoir

Jing WANG,Huiqing LIU,Jing ZHANG,Wei ZHAO,Yitao HUANG,Zhijiang KANG,Songqing ZHENG

Table 1 Similarity criteria of waterflooding experiments in dissolution-vug reservoirs.

Criterion classification	Similarity criterion	Physical meaning
Geometric similarity	η₁=L_x/L_y	Ratio of appearance size in different directions (the appearance size is determined by well spacing), ratio of the thickness of the model to the reservoir
	η₂=L_y/L_z
	η₃=h/L_z
Flow similarity	η₄=Qt/(?L_xL_yL_z)	PV, Reynolds number
Flow similarity	η₅=μ_o/(ρ_ovL_z)	PV, Reynolds number
Dynamic similarity	η₆=Δp/(ρ_ogL_x)	Ratio of injection-production differential pressure to gravity
Characteristic parameter of fractures	η₇=n_fL_xL_y	Ratio of fracture numbers and opening degree to characteristic length
Characteristic parameter of fractures	η₈=w_f/L_x