2.2 Beam Pumping
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Transcript of 2.2 Beam Pumping
Copyright Rike Service, Inc., 2006 1
BEAM PUMPING
Copyright Rike Service, Inc., 2006 2
System Components
– Bottom hole pumps
– Rod string– Tubing– Stuffing box
and wellhead– Pumping units
Copyright Rike Service, Inc., 2006 3
Design Parameters
– Producing rate– Pump and
tubing size– Rod stress– Pumping unit
torque– Prime mover
horsepower
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
Copyright Rike Service, Inc., 2006 5
Typical Pump Assemblies & Designations
Copyright Rike Service, Inc., 2006 6
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
Copyright Rike Service, Inc., 2006 21
Conventional Unit (CW)
Copyright Rike Service, Inc., 2006 22
Torque Curves Using API Torque Factors
Copyright Rike Service, Inc., 2006 23
API Pumping Unit Stroke & Torque Factors