2.2 Beam Pumping

Copyright Rike Service, Inc., 2006 1

BEAM PUMPING


System Components

– Bottom hole pumps

– Rod string– Tubing– Stuffing box

and wellhead– Pumping units


Design Parameters

– Producing rate– Pump and

tubing size– Rod stress– Pumping unit

torque– Prime mover

horsepower


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


Typical Pump Assemblies & Designations


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


Typical Pumping

Well


Beam Pumping Unit


Theoretical Dynamometer Card


Dynamometer AnalysisWhat dynamometer cards tell us

Maximum and minimum rod loadsCounterbalanceFluid or gas poundStanding and traveling valve checks


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


Conventional Unit (CW)


Torque Curves Using API Torque Factors


API Pumping Unit Stroke & Torque Factors

2.2 Beam Pumping

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