Fig 1.
Technology roadmap for digital control of low efficiency wells.
Fig 2.
The GBDT diagnosis algorithm model is constructed.
Fig 3.
Schematic diagram of coupled flow and analysis between wellbore tubing flow and wellhead choke.
Fig 4.
Pressure, temperature, and flow velocity fields after coupling.
Table 1.
Classification criteria for low-efficiency well subcategories.
Fig 5.
Accuracy verification of big data diagnosis and early warning algorithm.
Fig 6.
Measure parameter optimization and remote measurement and control technology route.
Table 2.
Concentration application criteria for high-salinity-resistant foam drainage agent systems.
Fig 7.
Prediction curve of hydrate formation position.
Fig 8.
Hydrate formation time prediction curve.
Fig 9.
Wellhead methanol injection critical concentration discrimination chart.
Fig 10.
Methanol injection system optimization closed-loop process.
Fig 11.
Establish a data transmission channel.
Fig 12.
Digital transformation diagram of well X1.
Fig 13.
X1Well site digital instrument.
Fig 14.
Production curve of well X1.
Fig 15.
Production curve of well X2.