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【17】Drilling Formula

  • 1、 Pressure loss in annulus
  • 2、 Pressure loss in annulus with corrected coefficient
  • 3、 Pressure loss through the drill string with tool joint coefficient
  • 4、 Total Flow Area Table
  • 5、 Pressure loss through surface equipment
  • 6、 Pressure loss through the drill string
  • 7、 Impact Force of Jet Nozzles on Bottom Hole
  • 8、 Cutting Slip Velocity Method#2
  • 9、 Cutting Slip Velocity Method#1
  • 10、 Power Law Constant
  • 11、 Minimum Flow Rate for PDC bit
  • 12、 Reynold Number
  • 13、 Hydraulic Horse Power (HPP)
  • 14、 Effective Viscosity
  • 15、 Cutting Carrying Index
  • 16、 Cross Flow Velocity Under a Drilling Bit
  • 17、 Critical Flow Rate
  • 18、 Bit Hydraulic Horsepower Per Area of Dril Bit (HSI)
  • 19、 Bit Hydraulic Horsepowe (hp)
  • 20、 Bit Aggressiveness (Coefficient of Friction)
  • 21、 Bit Nozzle Velocity
  • 22、 Stuck Pipe Calculation
  • 23、 Pump Pressure and Pump Stroke Relationship
  • 24、 Balance Cement Plug Above Retainer
  • 25、 Squeeze Below Retainer and Balance Cement Plug Above Retainer
  • 26、 Increase in casing pressure due to kick penetration Assumption - vertical well
  • 27、 Tensile Capacity of Drillpipe
  • 28、 Bottle Capacity Required in Accumulator
  • 29、 Trip margin calculation
  • 30、 Time to petentrate the kick
  • 31、 Riser Margin
  • 32、 New Pump Pressure With New Strokes (psi)
  • 33、 New Pressure Loss With New Mud (psi)
  • 34、 Mud Increment (MI)
  • 35、 Maximum surface pressure from kick tolerance information
  • 36、 Maximum Surface Pressure from Gas Influx in Water Based Mud
  • 37、 Maximum pit gain from gas kick in water based mud
  • 38、 Maximum Allowable Shut-In Casing Pressure (MASICP)
  • 39、 Maximum influx height
  • 40、 Maximum formation pressure (FP)
  • 41、 Lube Increment (MI)
  • 42、 Kill Mud Weight
  • 43、 Kick tolerance factor (KTF)
  • 44、 Initial Circulating Pressure (psi)
  • 45、 Hydrostatic Pressure Loss Due to Gas Cut
  • 46、 Initial Circulating Pressure (psi)
  • 47、 Formation Pressure from Kick Analysis
  • 48、 Estimate Type of Influx (kick)
  • 49、 Estimate gas migration rate with an empirical equation.
  • 50、 Calculate Influx Height
  • 51、 Adjusted maximum allowable shut-in casing pressure for new mud weight
  • 52、 Acutal gas migration rate
  • 53、 Pump out
  • 54、 Pressure required to break circulation
  • 55、 Pipe Elongation Due to Temperature
  • 56、 Equivalent Circulating Density (ECD) Using Yield Point for MW more than 13 ppg
  • 57、 Maximum ROP Before Fracturing Formation
  • 58、 Volume of Cutting Generated While Drilling
  • 59、 Equivalent Circulating Density (ECD) Using Yield Point for MW less than 13 ppg
  • 60、 Margin of Over Pull
  • 61、 Loss of hydrostatic pressure due to filling water into annulus in case of lost return
  • 62、 Light weight spot fill to balance formation pressure
  • 63、 Lag Time Calculation
  • 64、 Effective Mud Density
  • 65、 Drill Collar Weight Calculation To Prevent Drill Pipe Buckling
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