Mathematical Problems in Engineering

Research Article

Fault Diagnosis Method and Application of ESP Well Based on SPC Rules and Real-Time Data Fusion

Table 3

Multiparameter fault analysis table of ESP well.
Working condition typeFrMCMTVPIPPOPPDPITWTTPF
Normal00000000000
Shaft breakage0−2101−1−21−1−1−1
Tubing leakage001−11−1−11−1−1−1
Pump plugging0−1101−1−110−1−1
Perforation plugging0−110−1−1110−1−1
Water-cut rise010011110−1−1
Wellhead shut-in0−2102221−12−2
Reservoir pressure increase000011−11111
Gas influence0−10−11−1−11−1−1−1
Pump wear0−1101−1−110−1−1
Frequency increase1221−2221122
Choke stab0000−2−2−2−10−22
Pump reverse−1−1101−1−110−1−1
Tubing plugged0−11011−11−1−1−1