2.2 Beam Pumping
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Transcript of 2.2 Beam Pumping
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Copyright Rike Service, Inc., 2006 1
BEAM PUMPING
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Copyright Rike Service, Inc., 2006 2
System Components
– Bottom hole pumps
– Rod string– Tubing– Stuffing box
and wellhead– Pumping units
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Copyright Rike Service, Inc., 2006 3
Design Parameters
– Producing rate– Pump and
tubing size– Rod stress– Pumping unit
torque– Prime mover
horsepower
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Copyright Rike Service, Inc., 2006 4
API Design Technique
Preliminary selection of equipment--see API RP 11L-3 or Bulletin RP 11L-4
Design calculations based on API Bulletin RP 11L
For a given set of lift conditions, make a preliminary selection of pump and tubing size, rod string design, pumping unit stroke length, and pumping speed
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Typical Pump Assemblies & Designations
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1 RHA:RLA:
Rod, Stationary Heavy Wall Barrel, Top Anchor PumpRod, Stationary Liner Barrel, Top Anchor Pump
2 RWA:RSA:
Rod, Stationary Thin Wall Barrel, Top Anchor PumpRod, Stationary Thin Wall Barrel, Top Anchor, Soft Packed Plunger Pump
3 RHB:RLB:
Rod, Stationary Heavy Wall Barrel, Bottom Anchor PumpRod, Stationary Liner Barrel, Bottom Anchor Pump
4 RWB:RSB:
Rod, Stationary Thin Wall Barrel, Bottom Anchor PumpRod, Stationary Thin Wall Barrel, Bottom Anchor, Soft-Packed Plunger Pump
5 RHT:RLT:
Rod, Traveling Heavy Wall Barrel, Bottom Anchor PumpRod, Traveling Liner Barrel, Bottom Anchor Pump
6 RWT:RST:
Rod, Traveling Thin Wall Barrel, Bottom Anchor PumpRod, Traveling Thin Wall Barrel, Bottom Anchor, Soft-Packed Plunger Pump
7 TH:TL:
Tubing, Heavy Wall Barrel PumpTubing, Liner Barrel Pump
8 TP: Tubing, Heavy Wall Barrel Soft-Packed Plunger Pump
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Typical Pumping
Well
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Beam Pumping Unit
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Theoretical Dynamometer Card
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Dynamometer AnalysisWhat dynamometer cards tell us
Maximum and minimum rod loadsCounterbalanceFluid or gas poundStanding and traveling valve checks
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Sucker Rod Failure Analysis Type and causes of sucker rod failures
Mechanical—overloading (poor design)Corrosion—pitting, general corrosion, cracksRod-on-tubing wearMishandling
Isolating failure causesRecordkeeping—string design, dynamometer cardsFailure examination
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Conventional Unit (CW)
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Torque Curves Using API Torque Factors
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API Pumping Unit Stroke & Torque Factors