You are here: > Home > Products > Coiled Tubing

Coiled Tubing

API 5ST CT100 coiled oil and gas tubing

Coiled tubing and its working equipments are called “universal working machine”, and can be divided into coiled string (including down well working string and velocity string) and coiled line pipe according to uses.

Down well work string mainly used in gas lift induced spray drainage, well flush and clean-up, blunt sand and plugging solving, wax removal, mud replacement, acidification, salvage, fracturing and totally more than 20 kinds of logging, work over, drilling and completion down well work.

Velocity string mainly used in drainage production increase of low permeability wells, also can replace tubing directly used as completion string.

Coiled line pipe mainly used in surface gathering pipe line on-land oil field and gathering pipe line on offshore drilling platform.

Standard: API 5ST
Coiled tubing includes downhole working tubing, and velocity tubing
Max. length: 8000m

Features:

> Without thread connection, high work reliability and security

> Quick move and installation, high working efficiency

> No-stop working with large pressure-bearing capability

> Less working area needed

> Working cost is greatly reduced


Application:

Coiled tubing and its working equipments are called “universal working machine”, and can be divided into coiled string (including down well working string and velocity string) and coiled line pipe according to uses.

Down well work string mainly used in gas lift induced spray drainage, well flush and clean-up, blunt sand and plugging solving, wax removal, mud replacement, acidification, salvage, fracturing and totally more than 20 kinds of logging, work over, drilling and completion down well work.

Velocity string mainly used in drainage production increase of low permeability wells, also can replace tubing directly used as completion string.

Coiled line pipe mainly used in surface gathering pipe line on-land oil field and gathering pipe line on offshore drilling platform.

Standard: API 5ST

Coiled tubing includes downhole working tubing, and velocity tubing

Max. length: 8000m


Materials and chemical compositions, %:

Steel grade

C, max

Mn, max

P, max

S, max

Si, max

CT70

0.16

1.20

0.025

0.005

0.50

CT80

0.16

1.20

0.02

0.005

0.50

CT90

0.16

1.20

0.02

0.005

0.50

CT100

0.16

1.65

0.025

0.005

0.50

CT110

0.16

1.65

0.025

0.005

0.50


Dimensional range

OD: 25.4mm - 88.9mm

WT: 1.905mm - 6.35mm


OD tolerance: -0.25/+0.25mm for all sizes


WT tolerance

Specified wall thickness

Tolerance

< 2.8mm (0.110 inch)

-0.1mm (-0.005 inch) / +0.2mm (+0.01 inch)

2.8mm (0.110 inch) to 4.4mm (0.175 inch)

-0.2mm (-0.008 inch) / +0.3mm (+0.012 inch)

4.5mm (0.176 inch) to 6.35mm (0.25 inch)

-0.3mm (-0.012 inch) / +0.3mm (+0.012 inch)

Remark: Tolerance is measured before coiling


Tensile properties

Steel Grade

Yield Strength

Tensile Strength, min

Hardness, max

Min

Max

psi

MPa

psi

MPa

psi

MPa

HRC

CT70

70000

483

80000

552

80000

552

22

CT80

80000

551

90000

620

880000

607

22

CT90

90000

620

100000

689

97000

669

22

CT100

100000

689

-

-

108000

745

28

CT110

110000

758

-

-

115000

793

30

API 5ST CT100 coiled oil and gas tubing, API 5ST downhole working CT100 coiled tubing,