Transcription of Lufkin Oilfield Products Group - OilProduction.net
1 Oilfield Products GROUPARTIFICIAL LIFT NOMENCLATUREAND APPLICATION Box 849 (Hwy 69S & FM 326) Lufkin , Texas 75902-0849 Phone: 936/637-5437 Fax: 936 FormulasStrokes per MinuteFormula:Example:Where:RPM = 1170 Revolutions per minute of prime moverR = (320D Gear Reducer)d = 12" Pitch Diameter of Prime Mover SheaveD = 47" Pitch Diameter of Gear Reducer SheavePrime Mover Sheave DiameterFormula:Example:Where:SPM = 12 Strokes per MinuteR = Ratio (320D Gear Reducer)D = 47" Pitch Diameter of Gear Reducer SheaveRPM = 1170 Revolutions per Minute of Prime MoverUse nearest size available depending upon belt section and number ofgrooves in VelocityFormula:Example:Where:d = inch Pitch DiameterRPM = 1170 Revolutions per minute of Prime MoverLimit between 2000 and 5000 feet per min. (FPM)Belt Velocity less than 2000 FPM results in poor belt life. Belt Velocitygreater than 5000 FPM requires dynamically balanced DistanceFormula:Also:Example:Assumes Hi-Prime Electric Motor Driven C-320D-256-100 Conventional Unit= inchesWhere:UU = 31 (see General Dimensions)VV = (see General Dimensions)AA = 54 (see General Dimensions)b = 8 (assume 25 HP, Frame 324T Motor)Belt LengthFormula:Example:= inchesWhere:CD = inch Center Distance of ShaftsD = 47 inch Pitch Diameter of Gear Reducer Sheaved = inch Pitch Diameter of Prime Mover SheaveUse nearest belt size available depending on type of sheaves of Prime Mover (these values are approximate) formula A: formula B:Example:Assumes high slip (Nema D) :BPD = 217 @ 100% pump efficiencyDepth = 5600 feet, pump settingFormula A: for high slip (Nema D) electric motors and slow speed B.
2 For normal slip electric motors and multi-cylinder HP by for Mark II Strokes per Minute(based on the free fall speed of the rod) formula :Conventional Units:Air Balanced Units:Mark II Units:Example:Assumes a C-320D-256-100 Conventional SPM= =117030 R DRPM= d= =12 30 12 47117014 inchesvd RPM= p12v= =3 1416 14 5 FPMCDUVAB b=+ +-()222 UUVVAA b+ +-()222CD=+ +-()3133 25254 dDdCD=+ +()+-() ++()+-() 2 66 21 1 57 47 14 547 14 Depth= 56000 HPBPD Depth= =217 560056000217 SPML=.760000 SPML=.6360000 SPML=.5660000 SPM==..76000010017 15 SPM MaximumSPM = Strokes per MinuteRPM = Revolutions per Minute of Prime MoverFPM = Feet per MinuteR = Gear Reducer RatioD = Gear Reducer Sheave PitchDiameter, inchesd = Prime Mover Sheave PitchDiameter, inchesv = Belt Velocity, Feet per Minute = (Pi)PL = Belt Pitch Length, inchesCD = Shaft Center Distance, inchesU = see General DimensionsV = see General DimensionsAB = see General DimensionsUU = see General DimensionsVV = see General DimensionsAA = see General Dimensionsb = Prime Mover Backing (verticaldistance from mounting feet tocenter of shaft), inchesHP = HorsepowerBPD = Barrels per Day at 100% PumpEfficiencyDepth = Pump Setting, feetL = Stroke Length, inchesDefinition of Symbols Used(use 25 HP motor)
