Identification of Gas-Water Two-Phase Flow Patterns in Horizontal Wells of Shale Gas Reservoirs Based on Production Logging Data

Table 1

Comparison of real and predicted categories of gas-water two-phase flow type.

Prediction set	Actual category	BP prediction category	SSA-BP prediction category	Prediction set	Actual category	BP prediction category	SSA-BP prediction category
1	SF	SF	SF	13	SLF	SLF	SLF
2	SF	SF	SF	14	SLF	SLF	SLF
3	SF	SF	SF	15	SLF	SLF	SLF
4	SF	SF	SF	16	SLF	SLF	SLF
5	SF	SWF	SF	17	SLF	SLF	SLF
6	SF	SF	SF	18	SLF	SLF	SLF
7	SWF	SWF	SWF	19	BF	SLF	BF
8	SWF	SWF	SWF	20	BF	BF	BF
9	SWF	SWF	SWF	21	BF	BF	BF
10	SWF	SWF	SWF	22	BF	BF	BF
11	SWF	SWF	SF	23	BF	BF	SLF
12	SWF	SF	SWF	24	BF	BF	BF

BP accuracy: 87.5%; SSA-BP accuracy: 91.66%.