Research Article

Prediction of the Control Effect of Fractured Leakage in Unconventional Reservoirs Using Machine Learning Method

Table 1

Generated code for missing control-related parameters.

Column nameOverviewCode

Leak rate (m3/h)The rate of loss of drilling fluid during drilling1
Displacement (m3/h)The rate at which the carrier fluid is pumped during the plugging process2
Pumping pressure max (MPa)The carrier fluid is pumped to the leakage layer, the pressure generated by the fluid at this time3
Concentration (%)The concentration of plugging particles in the overall plugging slurry4
Addition of KZ-3 (t)Plugging materials used in the field, mineral type granular plugging materials5
Addition of KZ-4 (t)Plugging materials used in the field, mineral type granular plugging materials6
Addition of KZ-5 (t)Plugging materials used in the field, mineral type granular plugging materials7
Addition of walnut shell (t)Plugging materials used on-site, plant-type granular plugging materials8
Amount of vermiculite (t)Leakage plugging materials used in the field, mineral type flaky leakage plugging materials9
Amount of comprehensive plugging agent (t)Composite leakage plugging material mixed with particles, flakes, and fibers10
Addition amount of LWD agent (t)Particle plugging material with particle size below 1 mm11
Total addition (m3)The overall volume of carrier fluid12
Density (g▪cm3)The density of carrier fluid13
Funnel viscosity (s)From the marsh funnel, indicating the viscosity of the drilling fluid1 4
Actual blocking effect (%)The ratio of the leakage velocity of the lost formation before and after the plugging construction1 5