VM 80 HCS

VM 80 HCS.png

Vallourec High Collapse grades cover the full range of sizes and weights from 4 1/2" to 26", grades from 80 ksi to 150 ksi, and offer special drifts on a standard basis without collapse derating. While strictly compliant with API standards, Vallourec High ​Collapse grades are delivered with the guarantee of their minimum High Collapse rating.

​Combining High Collapse and Sour Service

​HCSS series "Enhanced API":

  • Available in grades 80 to 125 ksi.
  • Fully compliant with API.​
  • 85% / 90% SMYS threshold stress guarantee, higher than 80% in API.
  • Delivered with NACE method A test, performed on actual order (additional NACE method D performed on HCSS-D products).

​APPLICATIONS

Collapse loads can be due to well load cases, such as cementing operations, full evacuation, and APB (Annular Pressure Build up), or due to floating formations (mainly salt).

​PERFORMANCES

​Vallourec Collapse calculation model

Vallourec started long ago to accumulate collapse testing data in order to understand the collapse phenomenon and its influencing factors. This extensive knowledge is consolidated within the Vallourec proprietary collapse model as a function of the influencing parameters.

It has demonstrated its prediction accuracy through extensive correlation and state-of-the-art statistical analysis. This robust formula enables to provide customers with a safe guaranteed high collapse value for a large catalogue of products.​​

MEC​HANICAL PROPERTIES

Yi​eld Strength 

k​si (MPa)​

​Ultima​te Tensile 

​Strength ksi ​(MPa)  

Elongation 
​%   
Hardness
HRC 
Min.Max.Min.Min.Min.
80 
(552)
95
(655)
 95 ​
(655)​
 
API
formula
​​23

CORROSION PROPERTIES

Sulfide Stress Cracking resistance​

NACE ​TM0177    SSC test ​

Method A​​Method D (DCB)

Threshold stress

Min K1SSC value Average
MPa
Ö(ksiÖin)
85 % SMYS​N/A

TEST DATA ​​​​

More than 3,000 collapse tests have been performed on Vallourec High Collapse pipes. These tests are done in compliance with API 5C3 collapse test procedure.

Collapse tests are regularly done f​or R&D purpose but also on production samples. The collapse tests during production are requested by some customers to demonstrate the guaranteed ratings. They are done in-house or at external labs, at a given frequency (1 every 200 pipes for instance) specified by the customer.

FIELD RECORD​S

Vallourec High collapse products are widely used in the following areas:

  • HP/HT in ​Gulf of Mexico (e.g. 13 5/8" 88.2# VM 125 HC, 14" 115# VM 125 HC)
  • Tarim fields in China (​mainly V​M 140 HC)
  • Saudi Arabia (e.g. 9 5/8" VM 110 ​HCSS, 13 3/8" VM 95 HC)
  • Pre-salt in Brazil (mainly VM 125 HCSS, VM 110 HCSS)

​STORAGE & HANDLING RECOMMENDATION​

Please refer to the VAM® BOOK and API RP5C1​​.​​​​​