Analysis of Shunted Screen Gravel Pack Process and Calculation of Friction in Deepwater Horizontal Wells

Table 4

Downhole pressure gauge data logging.

Serial number	Packing state	Lower outside-inside difference (psi)	Upper outer-inner difference (psi)	Top-bottom external difference (psi)	Bottom-up internal difference (psi)
1	Prepump stage	3	1	-41	39
2	Began to sand	34	176	25	118
3	α-Wave packing	50	190	13	127
4	α-Wave packing	48	184	10	126
5	Stage 3-4	43	179	20	116
6	β-Wave initiation	45	180	19	116
7	Screenout	51	390	216	123