Weatherford 2011 sucker rod pump catalog

ARTIFICIAL LIFT SYSTEMS

®

Fluid Level

Liquid

Gas

5 1/2-in. Casing

Decentralizer

Diametrically

Opposed to Lower

Port (not to scale)

Casing

Perforations

2 7/8-in. Tubing

Seating Nipple

Upper Port

3 5/8-in.

Thin Wall

Pipe (1/8-in.)

Lower Port

Dip Tube

3 5/8-in. O.D. Thin-Wall Gas Separator

(For Small-Diameter Casing)

Gas Separation

(Concept 4 of 4 )

ARTIFICIAL LIFT SYSTEMS

®

Rod Pump

Horizontal Wells

Advantages

Reduce reservoir pressure by lowering fluid level and recovering

more fluid. Better gas separation when pump is set below the

kickoff point.

ARTIFICIAL LIFT SYSTEMS

®

Rod Pump

Horizontal Wells

Limitations

<15%/100’ (Some installations allow up to 25%).

Pump can be set at 90°.

ARTIFICIAL LIFT SYSTEMS

®

Rod Pump

Horizontal Wells

Disadvantages

Increase tubing/rod wear decreases run times.

Friction results in increased loads on sucker rods, polish rod and

pumping unit. Typically shorter run life on rod pump.

Use of Rod Rotator advised to

increase life of rods and tubing.

ARTIFICIAL LIFT SYSTEMS

®

What causes Sand Problems?

Sand can come from the reservoir or a sand-Frac.

If sand is present from a sand-Frac, it is usually a

temporary problem that will clear itself as the well is

pumped.

If the sand is from the reservoir the problem will be

ongoing and special attention must be given to the

design of the pump and its material selection.

ARTIFICIAL LIFT SYSTEMS

®

How do you Minimize

Sand Problems?

z Pressure-Actuated Plunger

z Combo Plunger Actuated Plunger

z Chrome Plated Grooved Plunger

z Sand Hogg

z 3-Tube Pump

ARTIFICIAL LIFT SYSTEMS

®

Type of plungers

for Sand Problems?

Pin End

Plunger

Box End

Plunger

Grooved

Plunger

Monel Pin

End

Plunger

Pressure

Actuated

Plunger

ARTIFICIAL LIFT SYSTEMS

®

z Best Particulate Producers

Traveling Barrel Pump , Top Holddown Pump,

& Tubing Pump

z Stroke Through Pump

Short Barrel, Long Plunger

z Special Pumps

3 Tube Pump

z Others

Bottom Discharge Valve, Top Seal Assembly,

& Plunger Wipers

Designs to Handle Solids

ARTIFICIAL LIFT SYSTEMS

®

Special 3-Tube Pump

z Efficient operation in extremely abrasive or

dirty production

z Utilizes produced fluid as packing medium for

effective seal surface

z Telescoping tubes give longer seal surface

allowing for looser fit

z Turbulence of fluid miniumizes the danger

of sanding in

ARTIFICIAL LIFT SYSTEMS

®

Sandy Fluid/

Pampa Pump

z Traveling barrel pump designed for use in wells

where abrasive or dirty fluids are produced.

z Pump has a smooth plunger which extends through

a relatively short hardened-liner section

z Due to length of Plunger, the ends do not enter the

liner section at either the top or bottom of the stroke

z Plunger is wiped clean on each stroke, and foreign

material (sand, etc) is not carried into the liner.

z When Pump is shut down, the Traveling valve on

top of the pump serves as check valve.

Weatherford 2011 sucker rod pump catalog

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