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Double Hollow Sucker Rod

Introduction of double hollow sucker rod

Double hollow sucker rod is a special structure which add an independent hollow channel in the inner of common hollow sucker rod. The inner pipe of the double hollow sucker rod is made of stainless steel pipe which can ensure the long service life.

Double hollow sucker rod is mainly used in the circular heating device for high pour point, high viscosity and high wax content oil exploitation. In the device, the double hollow sucker rod can be used combined with four-way hanging connector, circulating pump and other equipment.

A piece of profile map of double hollow sucker rod on the white background.

 Profile map of double hollow sucker rod.

A profile map of wellhole heating on the white background.

Double hollow sucker rod application in the wellhole heating.

Brief introduction of circular heating device

The double hollow sucker rod make use of the specially-made terminator to form two channel: outer channel and inner channel. Used combined with the four-way hanging connector, high-pressure rubber hose, circulating pump, and heat exchanger, the double hollow sucker rod can heating the crude oil circularly in a closed channel. Benefit from the structure of double hollow sucker rod, the heating carrier will not enter the wellhole, so it can reduce the pollution and improve the production efficiency.

Specifications

  • Material:
    • Outer pipe: high quality carbon steel pipe.
    • Inner pipe: stainless steel pipe.
  • Diameter:
    • Outer pipe: 36mm or 42mm.
    • Inner pipe: 16mm, 19mm and 22mm.
  • Length: 25', 26, 30' and other length can be customized.
  • Grade: D or H.
Item Diameter of Outer Pipe Diameter of Inner Pipe
DHSR-01 36mm 16mm
DHSR-02 42mm 22mm
DHSR-03 42mm 19mm

Features

  • The heat carrier will not enter the wellhole, it can reduce pollution and improve the production efficiency.
  • Can be used with various heating carrier, such as the hot oil, hot water, solar energy and steam.
  • Saving energy and improve the production efficiency.
  • Reduce pollution.
  • Reduce viscosity and remove wax.
  • Stainless steel inner pipe for long service life.
  • Can be used in the strict environments for heavy oil exploitation.

Applications

  • The double hollow sucker rod is mainly used in the circular heating system for heat conduction.
  • Different specs can be used in different environments.
    • Diameter of 16mm inner pipe and 36mm outer pipe double hollow sucker rod is widely used in the oil exploitation of viscosity below 10000mPa.s.
    • Demeter of 22mm inner pipe and 42mm outer pipe double hollow sucker rod is ideal for the oil exploitation of viscosity between 1000mPa.s. and 3000mPa.s.
    • Diameter of 19mm inner pipe and 42mm outer pipe double hollow sucker rod can play a good performance in the oil exploitation of viscosity below 5000mPa.s.
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