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Standard API Pump Types

API Insert Bottom Hold Down Pumps: RWB, RXB, RHB

RWB, RXB, and RHB are precision API insert pumps with either a cup or mechanical bottom anchor (hold-down). These are recommended for deep wells with low fluid levels. These pump assemblies are installed in the well on the end of the sucker rod string and seated in the seating nipple installed in the tubing string at a predetermined depth.

RWB – designed for use in shallow depth wells

RXB – designed with heavy wall barrel for use in deep well applications

RHB – designed with heavy wall barrel and extension for stroke through configurations

Features

  • General purpose API pump
  • Number of available accessories to meet applicatoin needs. Balanced Pressure around the barrel overcomes the disadvantages of a top anchor pump.
  • Fluid has only to pass through the anchor and standing valve to be in the producing chamber of the pump. The top anchor pump shares this advantage.
John Crane Production Solutions RWB RXB RHB

API Insert Top Hold Down Pumps: RWA, RHA

RHA and RWA are precision API insert pumps with either a cup or mechanical bottom anchor (hold-down). These pump assemblies are less likely to get stuck because they are seated at the top. They are installed in the well on the end of the sucker rod string and seated in the seating nipple installed in the tubing string at a predetermined depth.

RWA – designed for use in shallow depth wells

RHA – designed with heavy wall barrel and extension for stroke through configurations

Features

  • The top anchor (hold-down) eliminates sand settling between the pump barrel and tubing on the hold down preventing stripping jobs.
  • The fluid is discharged just above the hold-down, keeping solids in suspension.
  • The top anchor pump allows the standing valve to be submerged in the fluid being pumped. This allows the fluid level to be pumped down below the seating nipple.
  • The pump barrel can act as a gas anchor in gassy installations.
John Crane Production Solutions RWA RHA

API Traveling Barrel Bottom Hold Down: RWT

The RWT pump is a precision, metal plunger rod (insert) type with a thin wall barrel and either a cup or mechanical bottom anchor (hold-down). This assembly keeps the solids stirred up at the bottom of the pump. The RWT pump assembly is installed in the well on the end of the sucker rod string and seated in the seating nipple installed in the tubing string at a predetermined depth.

Features

  • The traveling barrel keeps the fluid moving, preventing sand from settling on the hold-down that leads to costly stripping jobs.
  • The traveling valve acts as a check valve during intermittent pumping; preventing sand from settling on the plunger.
  • Constructed with a more rugged hollow tube than API insert pumps.
John Crane Production Solutions RWT

API Bottom Hold Down Tubing Pump: THB

The THB pump is built to move the maximum amount of fluid. It has a precision, metal plunger tubing type with a heavy wall barrel and either a cup or mechanical seating assembly on the retrievable standing valve assembly. A “tap type” or “sure hold” puller on the bottom of the plunger assembly is used to retrieve the standing valve assembly. The THB tubing pump is installed in the well in two or three sections. The barrel assembly, including the seating nipple, is a part of the tubing string and run with the tubing. The plunger assembly, including the standing valve unit, is run in the well on the end of the sucker rod string. If the standing valve unit is not run in with the plunger assembly by means of the puller, then it can be seated in the seating nipple and run with the barrel assembly. In shallow wells, the standing valve unit can be dropped from the surface into the seating nipple.

Features

  • Bore size 0.250 inches smaller than the normal tubing I.D.
  • Produces greater volume of fluid than insert rod pumps due to the large bore size
  • Large fluid flow areas through the standing and traveling valves are good for producing heavy, viscous liquid.
  • Heavy wall barrel connects directly to the tubing string.
  • Sucker rod string connects directly to the top plunger cage of the plunger assembly.
John Crane Production Solutions THB