Advantageous Reservoir Characterization Technology in Extra Low Permeability Oil Reservoirs

Table 3

Oil and gas phase-permeability test data of three types of reservoirs.

Number	Bound water saturation (%)	Ultimate gas saturation (%)	Remaining oil saturation (%)	Width of common percolation area (%)	Common percolation point gas saturation (%)	Flooding efficiency (%)
Type IV reservoir	49.05%	43.90%	7.05%	43.90%	34.40%	86.16%
	48.58%	41.50%	9.92%	41.50%	26.15%	80.72%
Average	48.82%	42.70%	8.49%	42.70%	30.28%	83.44%
Type III reservoir	48.41%	37.60%	13.99%	37.60%	19.95%	72.89%
	48.06%	24.50%	27.44%	24.50%	13.95%	47.17%
Average	48.24%	31.05%	20.72%	31.05%	16.95%	60.03%
Type II reservoir	47.84%	25.40%	26.76%	25.40%	15.25%	48.70%
	47.17%	24.00%	28.83%	24.00%	17.05%	45.43%
Average	47.51%	24.70%	27.80%	24.70%	16.15%	47.07%