HOVOY

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GRE downhole tubing / GRE downhole casing
GRE downhole tubing


Product Introduction

Hovoy GRE tubing which are manufactured by advanced continuous winding technology and steam inside heat-curing technology, which guarantee the excellent chemical and physical performance, and provided the sufficient axial tensile strength. The reinforced materials are fiberglass continuous rovings, and the matrix material is anhydride/amine cured epoxy resin. The tubing has follow properties:

  • ●  The production specification is from 11/2 inch to 4 1/2 inch
  • ●  The maximum working pressure is 21Mpa
  • ●  The maximum working temperature is 80℃/135℃(Anhydride/Amine Cured Epoxy)
  • ●  The nominal length of the pipe is about 9.14m.

Couplings
By using continuous winding technology, the company produces various specs of assorted pipe Coupling etc. joints.

Connection Type
The API 8RD EUE long thread as per API specification 5B, 
(Tolerances as per API 15HR)

Scope of Application

  • ●  Water, polymer injection
  • ●  Oil production wells
  • ●  Gas lift of rod type oil well pump

Properties

  • ●  Good performance of mechanical and physical property
  • ●  Excellent property of corrosion-resistance and long service life.
  • ●  Anti-high-voltage performance
  • ●  Long life, the designed service life is not shorter than 30yeas
  • ●  High flow property of medium, no scaling ,no waxing , not prone to clogged
  • ●  Screw threaded connections and convenient installation
  • ●  Light in weight and high flow velocity

Typical Products physical characteristics

 Axial Tensile Stress

 Mpa

 140

 Axial Tensile Modulus

 Mpa

 21000

 Axial Compression Stress

 Mpa

 110

 Hoop tensile Stress

 Mpa

 180

 Hoop Tensile Modulus

 Mpa

 21500

 Coefficient of Thermal Expansion

 mm/mm/℃

 1.5X10-5

 Coefficient of Thermal Conductivity

 W/(m) (ºK)

 0.36

 Density

 g/cm3

 2.0

 Poisson’s Ratio Longitudinal Tensile Poisson’s Ratio

 0.2

 Harson Williams coefficient

 150