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Tubing Pump

Date:2024-05-06　Popularity:708

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RockySea Petro Tubing Pump Oil and Gas




The raw material of tubing pump parts should be inspected after heat treatment, the mechanical properties, chemical compositions and metallographic structures must be inspected by batch. The tubing pump parts should be inspected several times during the processing procedure.

  • Best tubing pump manufacturer in China
  • RockySea Petro also developed the downhole pumps with various processes of boronizing, nitriding, chrome plating, tungsten plating for special well conditions.
  • Some key points like the outer diameter of the pump plunger and the inner diameter of the pump barrel should be 100% inspected.

Description 

The whole barrel tubing pump has been widely used in mechanical oil recovery in oil fields. It is a rational rod-type oil recovery equipment for medium and deep wells. The whole barrel type pump is in accordance with “Subsurface Rod Pump and Its Fittings and GB/T 18607 “Specifications for pumping pump and its components”. Our company has a history of producing subsurface pumps for more than 50 years. The products we produce are of good quality and reliable performance and can manufacture pumps with different strokes and clearances according to user requirements. Our tubing pumps consist of a mechanical support tubing pump, cup support tubing pump, standing valve non-extractable pump.

TH pumps are heavy wall, stationary barrel, bottom anchor design tubing pumps.

Available with either 3 cup type hold down (THC) or with a mechanical lock hold down (THM), TH pumps give the largest possible bore size for a given tubing size, meaning the maximum amount of displacement with each stroke and therefore the greatest possible production.

tubing pumps are heavy-walled, stationary barrel pumps recognized as a standard design. They are often used in wells that produce more fluid than an insert rod pump can accommodate. Unlike rod pumps, the working barrel of these pumps is a section of the tubing string, which enables them to displace more fluid than insert pumps. The hold down is an independent piece that is typically inserted in the assembly prior to field delivery. The travelling assembly is installed on the end of the sucker rod string. Tubing pumps include a mechanism on the bottom end of the traveling assembly to retrieve the hold down assembly should the valve require repair.

tubing pump drawings

The TH tubing pumps feature heavy-walls and full-barrels. These pumps can be assembled with:

  • Tap-type or lock-type, standing-valve pullers;
  • Cup-type or mechanical seating assemblies;
  • Box-end and pin-end plungers;
All-metal, heavy-wall-barrel tubing pumps combine heavy-duty construction and a stroke-through design with the largest bore possible for any given tubing size to maximize production. The one-piece barrel eliminates joints susceptible to failure under working loads and is precision honed from end to end to ensure a perfect bore for the plunger and increase pumping efficiency.

These pumps are recommended for the following applications:

  • Deep wells
  • Wells with scale problems
  • Wells of any depth with severe pumping conditions
  • Wells where greater capacity is needed in a given tubing size

FEATURES:

  • A variety of exclusive pump accessories extends the range of pump applications to provide greater versatility, adaptability and value.
  • Components are offered in a broad range of materials so that pumps can be tailored to any environment for maximum cost efficiency and pump life.
  • Extension nipples threaded into the barrel couplings permit the plunger to stroke out of the barrel at each end of the stroke. This stroke-through design combats buildup of scale on the inside of the pump barrel.
Heavy-wall, one-piece barrel with special barrel couplings provides a positive seal and superior assembly strength and rigidity to perform in the harshest environments.

Features 

Structural characteristics and working principle

Applicable condition

  • Ban touching pumps
  • Gas-liquid ratio ≤60m3/m3, well deviation ≤30°
  • he total salinity dissolved in the well fluid does not exceed 10000mg/L or the chloride does not exceed 6000mg/L, the hydrogen sulfide content is less than 10ppm, and the carbon dioxide content is less than 250ppm.
  • Sand content in well fluid ≤0.2%

Working Principle

When the pumping unit is in motion, the sucker rod and the plunger are driven to reciprocate linearly in the pump barrel to recovery oil. When the plunger is running on the stroke, under the action of the gravity of the liquid column in the oil pipe, the traveling valve is closed, and the pressure in the pump barrel below the plunger is lowered, and the standing valve is opened under the action of the oil pressure in the annular cavity of the casing. The oil enters the cavity created by the upward movement of the plunger. When the plunger is stroked down, the standing valve is closed, and the pressure inside the pump barrel under the plunger increases. The traveling valve is opened, so that when the plunger is stroked, the well fluid passing through the standing valve passes through the cavity of the traveling valve and the plunger during the down stroke, into the annular cavity between the sucker rod and the oil pipe above the plunger. On the next upstroke, these well fluids are lifted together with the remaining well fluid in the annular cavity of the tubing and sucker rods. In fact, only the upstroke is lifted.

Structural Characteristics

The tubing pump is structurally robust and consists of pump barrel plunger, an oil drain (optional), standing valve, and extension nipple. The pump barrel is installed at the bottom of the tubing, the standing valve is installed under the pump barrel, the plunger is connected to the sucker rod, and the entire plunger is placed in the pump barrel, above the standing valve.


Data Sheet

Pump code25-106TH25-125TH25-150TH25-175TH25-200TH25-225TH30-250TH30-275TH40-325TH40-375TH
Basic pump diameter1  1/161 1/41 1/21 3/422 1/42 1/22 3/43 1/43 3/4
(27.00)(31.8)(31.8)(44.5)(50.8)(57.2)(63.5)(69.9)(82.6)(95.3)
Plunger length≤26(7925)
Pump barrel length≤34(10363)
Stroke ft (mm)≤32(9754)
Connecting tubing thread2 7/8 NU(EU)3 1/2 NU(EU)4NU4EU
Connecting sucker rod thread3/4 in7/8 in1 in
Theoretical displacement0.824 sn1.140 sn1.642 sn2.235 sn2.918 sn3.694sn4.560 sn5.518 sn7.707 sn10.261 sn
Maximum outer diameter (mm)3.53.53.53.53.53.54.254.254.54.6
(88.9)(88.9)(88.9)(88.9)(88.9)(88.9)(108)(108)(114.3)(117)


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Contact: Mr.Victor Zhang

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