• H2S corrosion resistance premium connection tubing & casing
    • H2S corrosion resistance premium connection tubing & casing
    • H2S corrosion resistance premium connection tubing & casing
    • H2S corrosion resistance premium connection tubing & casing
    • H2S corrosion resistance premium connection tubing & casing
    • H2S corrosion resistance premium connection tubing & casing
    • H2S corrosion resistance premium connection tubing & casing

H2S corrosion resistance premium connection tubing & casing

  • Product Model:2 3/8"~9 5/8"
    Feature Description:
    H2S corrosion resistance premium connection casing is seal lock joint casing used for oil and gas exploitation under H2S corrosion condition. Pipe body is produced with Cr-Mo steel billet that can resist H2S stress corrosion and the component of billet is on our Changbao’s self research. Such Cr-Mo ...
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Detailed Introduction

H2S corrosion resistance premium connection casing is seal lock joint casing used for oil and gas exploitation under H2S corrosion condition. Pipe body is produced with Cr-Mo steel billet that can resist H2S stress corrosion and the component of billet is on our Changbao’s self research. Such Cr-Mo steel billet has high hardenability and tempering stability, so when tempered under specific temperature, small and uniform tempered sorbite can be obtained. And through fine adjustment of the composition and heat treatment, hardness and strength can fully meet corresponding requirement for different steel grade. It also helps improve SSC resistance performance. Changbao’s such tubing and casing with special patent gas-sealing connection joint, , applies to different complex and serious well condition. Now, Changbao’s H2S corrosion resistance premium connection casing has been approved by domestic authority and widely used in domestic oil fields. And our CBS3 premium connection, applies to H2S corrosion resistance tubing and casing, has passed CAL-IV test qualification, which is the highest level required by ISO 13679.

1 Changbao’s regular H2S corrosion resistance steel grade

CB80S、CB80SS、C90、CB90S、CB90SS、T95、CB95S 、CB95SS、C110、CB110S、CB110SS

anti-H2S level—“S” means common H2S corrosion resistance level

“SS” means common high H2S corrosion resistance level

2 Changbao’s Seal lock premium connection that can apply to H2S corrosion resistance premium connection tubing and casing

CBS1:Changbao’s Seal lock premium connection one(tubing and casing)

CBS2:Changbao’s Seal lock premium connection two(tubing and casing)

CBS3:Changbao’s Seal lock premium connection three(tubing and casing)

CBSJ: economic low pressure sealing premium connection(tubing and casing)

CB-FJ: Changbao’s flush joint Seal lock premium connection(tubing and casing)

EU-HT/BC-HT :high torque opposite vertex premium connection(tubing and casing)

Standard

API Spec 5CT

ANSI/NACE MR0175/ISO 15156

Mechnical and Chemical property:

Steel grade

Item

Yield Strength

MPa

Tensile strength

MPa

Elongation

Impact Strength

Hardness maximum

Application scope

PH2S

MPa

min

max

min

HRC

80

CB80S

552

655

655

Calculated as per API 5CT

As API 5CT L80 required

23

0.34KPa-100KPa

CB80SS

PH2S>100KPa

90

C90

621

724

689

AS API 5CT C90 required

25.4

≥0.34KPa

CB90S

0.34KPa-100KPa

CB90SS

>100KPa

95

T95

655

758

724

As API 5CT T95 required

25.4

≥0.34KPa

CB95S

0.34KPa-100KPa

CB95SS

PH2S>100KPa

110

CB110S

758

862

793

As API 5CT C110 required

30

≥0.34KPa

0.34KPa-100KPa

CB110SS

PH2S>100KPa

C110

758

828

793

Corrosion property

Steel grade

Corrosion property requirement

H2S  stress corrosion testSSC

As NACE TM 0177 A way A liquorwithout cracking in 720 hours

ф6.35 sample

ф3.81 sample

Upload SYMS number

C90 T95 CB110S

80%

72%

CB80S CB90S CB95S C110

85%

76%

CB80SS CB90SS CB95SS

90%

80%

C90 T95PSL-2

90%

80%

Joint performance

Type of joint

Resistance to internal pressure and collapse

Tensile efficiency

Compression efficiency

Well condition

CBS1

Equal to pipe body

100% of pipe body

60% of pipe body

A little hard well condition, shallow well, medium-depth well

CBS2

100% of pipe body

60% of pipe body

Hard well condition, medium-depth/deep well, etc

CBS3

100% of pipe body

60% of pipe body

extreme well condition, deep well, extra deep well, horizontal well, etc

CBS3C

100% of pipe body

100% of pipe body

CBSJ

100% of pipe body

60% of pipe body

Low pressure gas-sealing well, ordinary horizontal well, large displacement well

CB-FJ

45%~66% of pipe body

45%~66% of pipe body

Repair well exhaust nozzle etc

EU-HT/BC-HT

Equal to API EU/BC Property

Ordinary wells

 Range

ODΦ33.4mm~Φ219.08mmWH3.18mm~22.2mm


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