Evaluation of Improving Water Flooding Technology by Volume Fracturing of Water Injection Wells in Complex Fractured Reservoirs: A Case Study of Chang 6 Reservoirs in Huaqing Oilfield, Ordos Basin

Table 3

Fracturing construction parameters of test well group.

Well name	Layer	Perforated interval; (m)	Sand quantity; (m^3)	Sand ratio; (%)	Displacement; (L/min)	Breaking pressure; (MPa)	Working; Pressure (MPa)	Pump stop pressure; (MPa)	Total liquid volume into the ground (m^3)
Y 308-59	Chang 6	2176.0-2184.0	50.0	11.7	8.0	27.9	24.7	20.5	531.1
		2191.0-2194.0
Y 308-61	Chang 6	1941.0-1949.0	35.2	10.7	6.0	34.7	41.2	20.7	571.8
		1955.0-1961.0
		1974.0-1980.0	25.1	12.1	6.0	33.6	39.7	18.1	446.2
Y 306-611	Chang 6	2112.0-2118.0	40.0	9.5	6.0	37.7	35.6	19.3	470.6
		2137.0-2144.0	20.0	9.0	6.0	36.0	34.8	18.8	252.8
		2146.0-2152.0
Average			32.5	10.6	5.8	34.6	36.2	19.3	426.4