Experimental Study of the Flow Mechanism of Deep Lacustrine Carbonate Reservoirs in the Yingxi Area of the Qaidam Basin

Table 2

Classification of the core samples’ storage and flow spaces.

Sample No.	(10^−3 μm^2)	Porosity (%)	Type of pore structure	Description
Sy60	112	9.9	Fractures	Brown-gray, lime-bearing mudstone or dolomicrite, fractures developed and half-filled with crystalline salt, partially filled with gypsum.
Sy30	1.68	7.8
Sy21	1.17	9.7
Sy18	1.69	12.8
Sy2	0.679	10.0
Sy29	0.434	5.9	Matrix pores	Gray dolomicrite, hard, brittle. Gypsum or calcium mirabilite fills the cores. Intergranular pores and dissolution pores are developed.
Sy36	0.115	6.1
Sy35	1.21	5.3
Sy27	0.852	6.5
Sy42	1.50	7.0

: gas permeability of the core sample.