Research Article
Fault Diagnosis Method and Application of ESP Well Based on SPC Rules and Real-Time Data Fusion
Table 7
Probability calculation results of working conditions.
| Time window (mins) | Working condition type | Probability |
| Well name: well_001 | 5 | Normal | 0.65 | Shaft breakage | 0.70 | Tubing leakage | 0.85 | Pump plugging | 0.75 | Perforation plugging | 0.60 | Water-cut rise | 0.25 | Wellhead shut-in | 0.10 | Reservoir pressure increase | 0.40 | Gas influence | 0.35 | Pump wear | 0.75 | Frequency increase | 0.05 | Choke stab | 0.00 | Pump reverse | 0.50 | Tubing plugged | 0.75 | 60 | Normal | 0.50 | Shaft breakage | 0.55 | Tubing leakage | 0.55 | Pump plugging | 0.40 | Perforation plugging | 0.40 | Water-cut rise | 0.15 | Wellhead shut-in | 0.15 | Reservoir pressure increase | 0.45 | Gas influence | 025 | Pump wear | 0.55 | Frequency increase | 0.05 | Choke stab | 0.05 | Pump reverse | 0.70 | Tubing plugged | 0.65 | 1440 | Normal | 0.60 | Shaft breakage | 0.90 | Tubing leakage | 1.00 | Pump plugging | 0.65 | Perforation plugging | 0.50 | Water-cut rise | 0.25 | Wellhead shut-in | 0.20 | Reservoir pressure increase | 0.45 | Gas influence | 0.85 | Pump wear | 0.55 | Frequency increase | 0.05 | Choke stab | 0.05 | Pump reverse | 0.70 | Tubing plugged | 0.75 |
| Well name: well_002 | ā | ā | 5 | Normal | 0.60 | Shaft breakage | 0.35 | Tubing leakage | 0.55 | Pump plugging | 0.50 | Perforation plugging | 0.25 | Water-cut rise | 0.45 | Wellhead shut-in | 0.10 | Reservoir pressure increase | 0.30 | Gas influence | 0.20 | Pump wear | 0.65 | Frequency increase | 0.10 | Choke stab | 0.10 | Pump reverse | 0.55 | Tubing plugged | 0.35 | 60 | Normal | 0.40 | Shaft breakage | 0.55 | Tubing leakage | 0.85 | Pump plugging | 0.70 | Perforation plugging | 0.35 | Water-cut rise | 0.45 | Wellhead shut-in | 0.10 | Reservoir pressure increase | 0.45 | Gas influence | 0.50 | Pump wear | 0.80 | Frequency increase | 0.00 | Choke stab | 0.10 | Pump reverse | 0.65 | Tubing plugged | 0.65 | 1440 | Normal | 0.20 | Shaft breakage | 0.75 | Tubing leakage | 0.65 | Pump plugging | 0.90 | Perforation plugging | 0.65 | Water-cut rise | 0.45 | Wellhead shut-in | 0.10 | Reservoir pressure increase | 0.30 | Gas influence | 0.70 | Pump wear | 0.80 | Frequency increase | 0.00 | Choke stab | 0.10 | Pump reverse | 0.75 | Tubing plugged | 0.65 |
| Well name: well_003 | 5 | Normal | 0.70 | Shaft breakage | 0.90 | Tubing leakage | 0.65 | Pump plugging | 0.85 | Perforation plugging | 0.50 | Water-cut rise | 0.55 | Wellhead shut-in | 0.35 | Reservoir pressure increase | 0.50 | Gas influence | 0.80 | Pump wear | 0.65 | Frequency increase | 0.15 | Choke stab | 0.10 | Pump reverse | 0.40 | Tubing plugged | 0.50 | 60 | Normal | 0.50 | Shaft breakage | 0.90 | Tubing leakage | 0.75 | Pump plugging | 0.65 | Perforation plugging | 0.40 | Water-cut rise | 0.40 | Wellhead shut-in | 0.15 | Reservoir pressure increase | 0.35 | Gas influence | 0.75 | Pump wear | 0.55 | Frequency increase | 0.05 | Choke stab | 0.00 | Pump reverse | 0.50 | Tubing plugged | 0.55 | 1440 | Normal | 0.25 | Shaft breakage | 0.90 | Tubing leakage | 0.85 | Pump plugging | 0.80 | Perforation plugging | 0.60 | Water-cut rise | 0.45 | Wellhead shut-in | 0.35 | Reservoir pressure increase | 0.40 | Gas influence | 0.80 | Pump wear | 0.75 | Frequency increase | 0.05 | Choke stab | 0.00 | Pump reverse | 0.80 | Tubing plugged | 0.80 |
| Well name: well_004 | 5 | Normal | 0.70 | Shaft breakage | 0.45 | Tubing leakage | 0.30 | Pump plugging | 0.85 | Perforation plugging | 0.25 | Water-cut rise | 0.30 | Wellhead shut-in | 0.20 | Reservoir pressure increase | 0.55 | Gas influence | 0.70 | Pump wear | 0.35 | Frequency increase | 0.05 | Choke stab | 0.05 | Pump reverse | 0.75 | Tubing plugged | 0.70 | 60 | Normal | 0.60 | Shaft breakage | 0.55 | Tubing leakage | 0.40 | Pump plugging | 0.70 | Perforation plugging | 0.65 | Water-cut rise | 0.60 | Wellhead shut-in | 0.20 | Reservoir pressure increase | 0.50 | Gas influence | 1.00 | Pump wear | 0.75 | Frequency increase | 0.05 | Choke stab | 0.35 | Pump reverse | 0.25 | Tubing plugged | 0.70 | 1440 | Normal | 0.10 | Shaft breakage | 0.70 | Tubing leakage | 0.75 | Pump plugging | 0.75 | Perforation plugging | 0.55 | Water-cut rise | 0.50 | Wellhead shut-in | 0.20 | Reservoir pressure increase | 0.50 | Gas influence | 1.00 | Pump wear | 0.65 | Frequency increase | 0.05 | Choke stab | 0.05 | Pump reverse | 0.65 | Tubing plugged | 0.70 |
| Well name: well_005 | 5 | Normal | 0.20 | Shaft breakage | 0.55 | Tubing leakage | 0.80 | Pump plugging | 0.75 | Perforation plugging | 0.75 | Water-cut rise | 0.45 | Wellhead shut-in | 0.15 | Reservoir pressure increase | 0.45 | Gas influence | 0.75 | Pump wear | 0.95 | Frequency increase | 0.25 | Choke stab | 0.15 | Pump reverse | 0.55 | Tubing plugged | 0.35 | 60 | Normal | 0.30 | Shaft breakage | 0.55 | Tubing leakage | 0.45 | Pump plugging | 0.65 | Perforation plugging | 0.75 | Water-cut rise | 0.55 | Wellhead shut-in | 0.25 | Reservoir pressure increase | 0.50 | Gas influence | 0.15 | Pump wear | 0.95 | Frequency increase | 0.25 | Choke stab | 0.05 | Pump reverse | 0.60 | Tubing plugged | 0.65 | 1440 | Normal | 0.20 | Shaft breakage | 0.85 | Tubing leakage | 0.70 | Pump plugging | 1.00 | Perforation plugging | 0.75 | Water-cut rise | 0.55 | Wellhead shut-in | 0.15 | Reservoir pressure increase | 0.45 | Gas influence | 0.85 | Pump wear | 1.00 | Frequency increase | 0.05 | Choke stab | 0.05 | Pump reverse | 0.95 | Tubing plugged | 0.75 |
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