Pipes Functions

Steady State Hole Cleaning

Hole Cleaning Index, Solid concentration and Bed Relative Height vs Depth - Steady State

Compute cuttings transport in steady-state

og.model.cuttingstransport.steadyState(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "flowRate", value_m3/s,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s)
)

Output:

• Bed Relative Height (0-1),

• Transport Ratio (0-100),

• cuttings Carrying Index (0-1)

• Suspension Solids Concentration (m3/m3)

• vs Depth (m)

• Lag time (s)

Bed Relative Height

Bed Relative Height = Bed Height / Annular Hydraulic Diameter

Calculate bed relative heights the annular depths

og.model.cuttingstransport.bedRelativeHeight(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "flowRate", value_m3/s,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s)
)

Suspension Solids Concentration

Calculate suspension solid concentration the annular depths

og.model.cuttingstransport.suspensionSolidsConcentration(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "flowRate", value_m3/s,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s)
)

Total Solids Concentration

Calculate total solid concentration of the annular depths (suspension + solid bed)

og.model.cuttingstransport.totalSolidsConcentration(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "flowRate", value_m3/s,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s)
)

Suspension Solids Velocity

Calculate suspension solid velocities along the annular depths

og.model.cuttingstransport.suspensionSolidsVelocity(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "flowRate", value_m3/s,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s)
)

Suspension Fluid Velocity (Annular Velocity)

Calculate suspension fluid velocities along the annular depths

og.model.cuttingstransport.suspensionFluidVelocity(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "flowRate", value_m3/s,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s)
)

Transport Ratio

Transport Ratio = Suspension Solid Velocity/Suspension Fluid Velocity

Calculate transport ratio along the annular depths

og.model.cuttingstransport.transportRatio(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "flowRate", value_m3/s,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s)
)

Minimal Flow For Efficient Cleaning

Calculate minimum flow for efficient cleaning

og.model.cuttingstransport.minimalFlowForEfficientCleaning(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s
                "maxTotalCuttingsConcentration", value_m3/m3)
)

Maximum ROP For Efficient Cleaning

Calculate maximum ROP for Efficient Cleaning

og.model.cuttingstransport.maximumRopForEfficientCleaning(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s,
                "maxTotalCuttingsConcentration", value_m3/m3
                )
)

Lag time (Cuttings)

Calculate the lag time using the cuttings calculator.

Example Pipes:

og.model.cuttingstransport.lagTime(
         newmap("wellId", "{well_id}",  
                "bitDepth", value_m,
                "flowRate", value_m3/s,
                "drillPipeRotation",  value_rad/s, 
                "rateOfPenetration", value_m/s, 
                "cuttingsAverageSize", value_m, 
                "cuttingsDensity", value_kg/m3, 
                "maxCellLength", value_m, 
                "minCellLength", value_m,
                "boosterMeasuredDepth", value_m,
                "boosterFlowRate", value_m3/s)
)

Input Parameters Description

Parameters	Description	unit
wellId	Well Id	String
rateOfPenetration	Rate of Penetration	m/s
flowRate	Flow Rate or pump flow in	m3/s
cuttingsAverageSize	Particle Diameter	m
cuttingsDensity	Solid density (cuttings)	kg/m3
maxTailorLength		m
minCellLength	Size length of cell (discretization)	m
boosterMeasuredDepth	Measured depth of booster	m MD
boosterFlowRate	Booster flow rate	m3/s