ISO15156 Tubing And Casing

  • ISO15156 Tubing And Casing
ISO15156 Tubing And Casing

APPLICABLE STANDARDS
API SPEC 5CT Specification for casing and Tubing.
ANSI/NACE MR0175 Metals sulfide stress cracking and stress corrosion resistance in sour oilfield environment.
ANSI/NACE TM0177 Laboratory testing of metals for resistance to sulfide stress cracking and stress corrosion cracking in H2S environment.
ISO 15156 Petroleum and natural gas industries-material for use in H2S containing environments in oil and gas production.
ISO 13680 Petroleum and natural gas industries corrosion-resistant seamless tubes for use as casing , tubing and coupling stock technical delivery conditions third edition.

I. Anti-H2S corrosion tubing and casing

APPLICABLE STANDARDS

API SPEC 5CT    Specification for casing and Tubing.

ANSI/NACE  MR0175  Metals sulfide stress cracking and stress corrosion resistance in sour oilfield environment.

ANSI/NACE TM0177 Laboratory testing of metals for resistance to sulfide stress cracking and stress corrosion cracking in H2S environment.

ISO 15156   Petroleum and natural gas industries-material for use in H2S containing environments in oil and gas production.

ISO 13680 Petroleum and natural gas industries corrosion-resistant seamless tubes for use as casing , tubing and coupling stock technical delivery conditions third edition.


Mechanical Property

Grade

Product Name

Yield strength(MPa)

Tensile Strength(Mpa)

Elogation

Charpy V-impact/J

Max. Hardness/(HRC)

Min

Max

Min

80

BL80S

552

655

655

Calculated according to API 5CT formula

According to API 5ct

80

BL80SS

90

BL90S

621

724

689

90

BL90SS

95

BL95S

655

758

724

95

BL95SS

110

BL110S

758

862

793

110

BL110S

 

Corrosion Resistance

Product Name

Requirements of anti- corrosion Nature

H2S Stress Corrosion Cracking Test (SSC)

Solution A according to NACE TM 0177 A, without crack after 720 Hours

Ø6.35/Sample

Ø3.81/Sample

Loading SMYS value

BL80S, BL90S, BL95S

85%

76%

BL80SS, BL90SS, BL 95SS

90%

80%

BL110S

80%

72%

BL110SS

85%

76%

Note: Sulfur resistance grade ‘S” Reefers to normal sulfur resistance; “SS” indicates high sulfur resistance

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