• CO2 corrosion resistant premium connection tubing and casing
    • CO2 corrosion resistant premium connection tubing and casing
    • CO2 corrosion resistant premium connection tubing and casing

CO2 corrosion resistant premium connection tubing and casing

  • Product Model:2 3/8"~9 5/8"
    Feature Description:
    CO2 corrosion resistant premium connection tubing and casing, with good performance in CO2 corrosion resistant, which is specially designed by seal lock connection applies to sour oil & gas well that contains CO2 or both CO2 and CL¯.
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Detailed Introduction

CO2 corrosion resistant premium connection tubing and casing, with good performance in CO2 corrosion resistant, which is specially designed by seal lock connection applies to sour oil & gas well that contains CO2 or both CO2 and CL¯. Pipe body is produced with economic low-alloy steel billet containing Cr, Ni, Mo etc or stainless 13Cr, 15Cr steel billet, which have good performance in thermodynamic stability. Alloy component (Cr、Ni、Mo, etc)can directly block anode process and promote cathodic process. The activity of element (Cu、Si、Aletc.)can help the formation of corrosion resistant structure containing high, stable alloy component on the surface , whose thickness is about several atomic layers .It also helps improve CO2 corrosion resistant ability. Changbao ‘s such tubing and casing with special patent gas-sealing connection joint, , applies to different complex and serious well condition. Now, Changbao’s CO2 corrosion resistant premium connection tubing and casing have been approved by domestic authority and widely used in domestic oil fields. And our CBS1 premium connection, which usally applies to CO2 corrosion resistant tubing and casing, has passed CAL-Ⅱtest as ISO 13679 specification. CBS3 premium connection has passed CAL-IV test, which is the highest level required by ISO 13679.

Changbao’s regular steel grade for CO2 corrosion resistance

CB80-3Cr、L80-9Cr、L80-13Cr、CB90-3Cr、CB95-3Cr、CB95-13Cr、CB110-3Cr、CB110-5Cr、CB110-13Cr、CB110S-13Cr

“S” means super

Changbao’s seal lock premium connection applied to CO2 corrosion resistance

CBS1:Changbao’s Seal lock premium connection one

CBS2:Changbao’s Seal lock premium connection two

CBS3:Changbao’s Seal lock premium connection three

CBSJ: economic low pressure sealing premium connection

CB-FJ: Changbao’s flush joint gas-sealing premium connection

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

Standard

API Spec 5CT

NACE-TM0171 Autoclave Corrosion Testing of Metals in High-Temperature Water

API Spec 5B

ISO 13679/GB/T 21267

Mechanical and Chemical property

Steel grade

Item

Yield Strength

MPa

Tensile strength

MPa

Elongation

Impact Strength

Hardness maximum

Application scope

min

max

min

HRC

80

CB80-3Cr

552

758

689

Calculated as per API 5CT

As API 5CT N80 required

23

Apply to low CO2 content environment

L80-9Cr L80-13Cr

552

655

655

As API 5CT L80 required

Apply to CO2 corrosion environment

PCO2≥0.02MPa

90

CB90-3Cr

621

724

689

AS API 5CT C90 required

25.4

Apply to low CO2 content corrosion environment

95

CB95-3Cr

655

758

724

As API 5CT T95 required

25.4

Apply to low CO2 content corrosion environment

CB95-13Cr

Apply to CO2 content corrosion environment

PCO2≥0.02MPa

110

CB110-3Cr

758

965

862

As API 5CT P110 required

32

Apply to low CO2 content corrosion environment

CB110-5Cr

Apply to low CO2 content corrosion environment

CB110-13Cr

Apply to CO2 content corrosion environment

PCO2≥0.02MPa

CB110S-13Cr

Apply to CO2 and low H2S content corrosion environment

PCO2≥0.02MPa

Property of Joint

Type of joint

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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keywords: premium connection,corrosion resistance,tubing,casing,CO2
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