OCTG – Corrosion Resistance Alloy Pipes for Sour Gas Drilling Services

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OCTG – Corrosion Resistance Alloy Pipes for Sour Gas Drilling Services

OCTG K55 casing pipe

API Casing Pipe Factory - API Casing Pipe OCTG

Product Number: Sumitomo Metal SM 2535 / Tubing 23 Lb/ft / OD: 7″ / ID: 6.366″ /  Tubing 26 Lb/ft / OD: 7″ / ID: 6.276″.

TECHNICAL SPECIFICATIONS:

  1. General Definition of Equipment

1.1 Tubing / Liner

1.1.1.: 28% Cr Material

7” OD tubing, 23, 26 Lb/ft, range II, 100-130 ksi yield strength.

Pup joints 0.75 m, 1 m, 1.25 m, 1.5 m, 3 m and 6 m long with the same specification.

All thread and coupled with VAM TOP–I or equivalent connections.

1.2 Accessories

1.2.1.: 28% Cr Material

7” coupling

All connections with VAM TOP-I or equivalent connections.

7” drift caliper (Teflon material).

Pipe dope.

 

  1. Threaded connection specifications.

For all tubulars and accessories, connections shall feature high quality gas tight coupled premium connections :

– For 28% CRA – 26, Lb/ft-110 KSI ( Tubing ) : VAM TOP – I, or equivalent.

– For 28% CRR – 23 Lb/ft- 110KSI ( Tubing ) : VAM TOP , or equivalent.

  1. Material requirements

3.1 28% CRA

All tubulars and accessories shall be manufactured with corrosion resistance alloy ( Min. pitting index 36) , CRA material ( 25 – 28% Cr , 30 – 35% Ni). Required grade is 110 ksi obtained by cold – working.

Mechanical properties and chemical analysis shall comply with the following requirements :

Mechanical Properties :

 

GRADE YIELD ULTIMATE ELONGATION HARDNESS FINAL

STRENGTH TENSILE % MIN. RC MAX. CONDITION

STRENGTH

 
 

Min. 110 ksi

115 ksi 11% 33 Cold work

Max. 130 ksi

 
 

Chemical Analysis

 

Ni    Cr      Mo     Cu Mn Si P S C Fe N

Max max max max max max max

 
 

29 25 ,28 3

Weight

% 1.50 1.00 0.50 0.030 0. 030 0. 030 Remainder 0.20

36.5 27.5 4

 
 
  1. Quantitiy:

7 in.( OD: 7″ / ID: 6.276″ ) x 26 ppf x 28 to 34 ft. / Total quantity: 24,000 Meters

7 in.( OD: 7″ / ID: 6.366″ ) x 23 ppf x 32 to 38 ft. / Total quantity 63,000 Meters

Pitting Index

The minimum pitting index required is 36. This index is calculated by the following formula : % CR + ( % Mo x 3.3 ) + ( % N x 16 )
This index is requird not only for well corrosion aspects but also to combat strong atmospheric corrosion during storage in the Persian Gulf Area.

– Please, would it be possible to have an quote/ogffer  for OCTG Corrosion Resistance Alloy Tubings for Sour Gas Drilling Services ( see details- ATTACHMENT )

in two different Sizes;

  1. A)  7″ OD x 26 ppf  x  28 to 34 ft   and  Total Quantity : 24,0000 METERS ( Twenty Four Thousands Meters )
  2. B)  7″ OD x 23 ppf  x  32  to  38 ft  and Total quantity : 63,000 METERS ( Sixty Three Thousands Meters )

If you need to know : Quote/Offer is requested on FOB Basis, to your Nearest International port along with Technical Sepecification, Delivery Time and Packing Details. please ask us….

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