井控计算公式-英进制(英文).docVIP

WELL CONTROL Equations Charts Tables Pressure (psi) Pressure Gradient (psi/ft) Hydrostatic Pressure (psi) a. b. c. Equivalent Density (ppg) Formation Pressure (psi) assuming shut-in well with BHP equalized with formation pressure Density to Balance Formation (ppg) Equivalent Mud Weight, EMW (ppg) Maximum Allowable Surface Pressure, MASP (psi) Based on Casing Burst. Maximum Initial Shut-In Casing Pressure, MISICP (psi) Upon initial closure only--Based on formation breakdown @ shoe. For IWCF, written as initial MAASP. Initial Circulating Pressure (psi) ENGINEERS DRILLERS METHODS. Final Circulating Pressure (psi) ENGINEERS METHOD. Equivalent Circulating Density, ECD (ppg) Gas Pressure and Volume Relationship -- Boyles Law The Pressure (psi) of a gas bubble times its Volume (bbl) in one part of the hole equals its Pressure times its Volume in another. Disregards effects of Temperature (T) and gas compressibility (z) or Pump Output (bbl/min) 100% Triplex Pump Output (bbl/stroke) Surface To Bit Strokes (strokes) Circulating Time (min) Open Hole Capacity Factor (bbl/ft) Pipe Capacity Factor (bbl/ft) Annulus Capacity Factor, ACF (bbl/ft) Pipe Displacement (bbl/ft) Disregarding tool joints. Total Pipe Displacement Including Capacity (bbl/ft) Disregarding tool joints. Height of Influx (ft) Pressure Gradient of Influx (psi/ft) Bit on bottom. Rate of Kick Rise (ft/hr) Well Shut-In. Weight per Foot of Drill Collars (lb/ft) Force (lb) Area (in2) Degrees API (@ 60oF) Specific Gravity (@ 60oF) Mud Weight from Specific Gravity (ppg) (Fresh Water weighs 8.33 ppg) Hang Off Weight (lb) Barite Requirement For Weight-up (100 lb sxs) Cutting Back or Weighting Up One Fluid with Another to Obtain Desired Fluid Density Final Density of a Mixture of Fluids, (ppg) Final Density of a Mixture of a Fluid and a Solid, (ppg) Weight of Solid to Add to a Fluid to Obtain Desired Fluid Weight, (lb) VOL