InterCorr Home Page

New Limits for Sour Service - NACE MR0175/ISO 15156:
Sour, Deep Water & Dynamic Designs

Meeting Minutes Index Page

JIP Home Project 2005 A Project 2005 B Project 2005 C Meeting Minutes Online Presentation Downloads

InterCorr 2005 JIP - New Limits for Sour Service
Kick-Off Meeting Minutes

  1. Meeting was called to order at 10:00 AM with the participation of the following attendees: In person: Hideo Sato (JFE Steel), Jim Skogsberg (ChevronTexaco), and Lillian Skogsberg (Shell E&P), Julio Maldonado (InterCorr) and Russell Kane (InterCorr). Retained austenite and delta ferrite content to be evaluated and documented for the 13Cr materials. and 17-4 PH materials. Shigeru Nakamura (Sumitomo) joined the meeting later for Parts B and C. Telecon participants: Rashmi Bhavsar and Seth Silverman (Schlumberger), Bob Badrak (Weatherford) and Manuel Maligas (FMC Technologies). Regrets were received from Petrobras and Tenaris.
  1. The current list of sponsors for 2005-A, -B and –C is given in Attachment I. R. Kane encouraged the sponsors to let him know if they can recommend any other companies for sponsorship in any of the 2005 JIP projects.
  1. The presentation used for the meeting by InterCorr was provided in advance by email attachment from R. Kane.
  1. All references to (Monel) alloy 400 to be eliminated. (Monel) alloy K-500 is the material of interest for this work.
  1. L. Skogsberg informed the group that Shell E&P will participate and sponsor all three of the 2005 JIP projects (2005-A, -B and -C).
  1. InterCorr will develop a dedicated secure website for this program. Information on each program will be secure by password protection and functionality that includes: (a) Posting of also data and minutes, (b) one button emailing to the sponsors list for project announcements, (c) posting of questions and discussion items to an archived discussion thread for future references. This will activated by March 17, 2005, and the sponsors will be notified of passwords and usersnames.
  1. The principal focus of these minutes is to capture important discussion points and to document specific changes made to the work scope to each of the three projects
  1. It was emphasized that InterCorr will attempt to obtain all materials used in this program which are in the upper portion of their respective strength ranges and minimum portion of their compositional ranges, as available.

Project 2005-A: New SSC Limits for NACE MR0175/ISO 15156

  1. For this project, InterCorr will employ 316/316L dual grade material for the SSC testing. Furthermore, the group agreed that 0.5 inch bar stock (with some degree of residual cold work) will be used for this testing. Schlumberger will also provide 316 control line tubing for the preparation of additional samples which will be cut and bent 180 degrees and placed in the test along with the tensile specimens for additional information.
  1. The group agreed on using 17-4 PH DH1150 with 110 ksi minimum yield strength for testing. Commercial bar stock will be utilized.
  1. Similarly, the group agreed with the use of K-500 in the annealed and aged condition (105 ksi yield – close as possible to HRC 35 max). M. Maligas discussed the concern with the use of low quality Monel from Electric Furnace-type processing with tamp element problems. Special Metals K-500 would be the preferred material. M. Maligas will be contacted for a source of supply. Commercial bar stock will be utilized.
  1. J. Skogsberg suggested that the group provide information to InterCorr on procurement of materials based on previous experiences. This will ensure that the right materials are identified, procured and used for the testing in this program. R. Kane will send out an inquiry on this subject to the 2005-A sponsors.
  1. Further to Item 8, related to the 17-4 PH material, material for testing will be in the upper one-third of the yield strength range for this material.
  1. It was suggested that D.C. Agarwal (Krupp-VDM) be contacted about participation in the program.
  1. In terms of environmental conditions, it was suggested that Cl, pH and H2S conditions be kept constant for the 17-4 PH and 316L while varying the temperature. In the
    K-500 case, the Cl, pH and T (ambient – 75 F) will be kept constant while varying the H2S content. Steel coupling will be used to produce a condition of hydrogen charging for K-500. Actual conditions to be determined based on further input from the group. R. Kane will send the 2005-A sponsors an inquiry on this subject.
  1. M. Maligas also suggested the testing of 316L in simulated seawater (pH 5) at high temperature and H2S content. Suggestion is recorded but will probably not be pursued since it would like impede any balloting items to NACE MR0175/ISO15156. The aim of this program conduct tests in simulated production conditions involving NaCl brine.
  1. Retained austenite and delta ferrite content to be evaluated and documented for the 17-4 PH materials.

2005-B: SCC at Low Temperature

  1. B. Badrak signed off and S. Nakamura joined the group at this point in the meeting.
  1. H. Sato voiced JFE Steel interest in adding line pipe (weldable 12Cr/13Cr) to the program. Cost ramifications to be determined and presented for further discussion.
  1. For the tensile SSC’s, it was decided that duplicate specimens be stressed to 90% AYS.
  1. The group decided to drop the tubing grade steel (API T-95) from the test program and add two environmental conditions for modified 13Cr alloys.
  1. Alloy 4130 from forging with 75 ksi YS minimum to be employed for testing.
  1. Alloy 4130 to be tested at the standard NACE TM0177 condition pH 2.7, 5 percent NaCl and 15 psia H2S with testing to be conducted at 5 and 23 C.
  1. 13Cr-L80 to be tested in only one environmental condition (pH 4.5, 165 g/L NaCl and 0.5 psia H2S).
  1. Mod. 13Cr (13Cr+Ni+Mo) to be tested in two environmental conditions with testing to be conducted at 5 and 23 C:
    - pH 4.5, 165 g/L NaCl and 0.5 psia H2S
    - pH 3.5, 1,000 ppm Cl- and 0.5 psia H2S
  1. Retained austenite and delta ferrite content to be evaluated and documented for the 13Cr materials.

2005-C: SCC under Cyclic (Non-Fatigue) Loading

  1. Alloy 4130 to be tested in this portion of the program instead of the API T-95 which has been dropped.
  1. Alloy 4130 to be tested in pH 4.5, 165 g/L NaCl and 15 psia H2S.
  1. Mod. 13Cr to be tested in pH 4.5, 165 g/L NaCl and 0.5 psia H2S
  1. Line pipe 12Cr/13Cr material will be added to this portion of the program if one additional sponsor joins over the full-funding level. The environmental conditions for these will have to be reviewed and approved by the 2005-C sponsors. In the absence of additional sponsors, cost ramifications to be determined and presented for further discussion.
  2. S. Nakamura asked for a photograph of the InterCorr tension test loading fixture with spring washers added for compliance. It is attached provide in Attachment II.

Additional note: R. Kane asked sponsors to check their contracting to make sure that all contracts/P.O. are finalized ASAP in March so that the acceptance invoice can be sent for payment.

Meeting Minutes by: J.G. Maldonado

Reviewed and Finalized by: R.D. Kane


Attachment I

InterCorr 2005 JIP Program Sponsors

(as of March 9, 2005)

 

Attachment II – Photograph of InterCorr Stressing Fixture 

 Materials of Construction:
C-276 frame and nuts
718 spring washers
Coated with Xylan coating to cover CRA area

(other coatings or isolation used for different environments)