IQPCHPHT Casing and Tubing – Standards        and Specifications             Stuart Cole          Technical Manager       ...
Introduction HPHT wells are now being developed by a larger number of  operators. Casing and connections provide the bar...
HPHT Materials Current Standards/Specifications for tubulars  ● Manufacturing Standards:      • ISO 11960/ API 5CT 8th Ed...
HPHT Materials  Design     1.   Select material that provides required level of corrosion performance     2.   Simulation...
HPHT Materials – Risk Reduction1. Qualification tests - Materials      ● Material Qualification Tests can be customer-spec...
Upcoming SlideShare
Loading in …5
×

HPHT Casing and Tubing: Standards and Specifications – Presented by Stuart Cole, Technical Manager at Vallourec Group

1,827 views

Published on

Key topics presented include:
• HPHT wells are now being developed by a larger number of operators
• Casing and connections provide the barriers to maintain well integrity. Material and Connection Selection depend on the risk profile
• The optimum value is defined by the operator following the assessment of the risks
This presentation gives a brief overview of the selection, qualification and manufacturing of both the pipe and connections, including additional aspects that should be included for HPHT wells.
For the complete presentation, visit http://bit.ly/M4I0Pa.
For more information, please visit http://www.hphtwells.com/ss-brochure.

Published in: Business, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,827
On SlideShare
0
From Embeds
0
Number of Embeds
10
Actions
Shares
0
Downloads
61
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

HPHT Casing and Tubing: Standards and Specifications – Presented by Stuart Cole, Technical Manager at Vallourec Group

  1. 1. IQPCHPHT Casing and Tubing – Standards and Specifications Stuart Cole Technical Manager September 2011 Vallourec Group
  2. 2. Introduction HPHT wells are now being developed by a larger number of operators. Casing and connections provide the barriers to maintain well integrity. Material and Connection Selection depend on the risk profile The optimum value is defined by the operator following the assessment of the risks. RETURN VALUE = RISK This presentation gives a brief overview of the selection, qualification and manufacturing of both the pipe and connections, including additional aspects that should be included for HPHT wells. 2 Vallourec Group
  3. 3. HPHT Materials Current Standards/Specifications for tubulars ● Manufacturing Standards: • ISO 11960/ API 5CT 8th Edition • ISO 13680/ API 5CRA – Both standards give the details of the chemistry, mechanical performance and states data on how it is to be manufactured – PSL levels to designate the quality standards that the pipe is produced too ● Specifications • Proprietary supplier specifications • Customer specifications – These can take into account unique aspects requested by the customer or provided by the supplier ● Design • ISO 10400 – Provides the formulas for the pipe performances However no specification or standards are tailored to meet HPHT requirements, therefore a combination of specifications is required 3 Vallourec Group
  4. 4. HPHT Materials  Design 1. Select material that provides required level of corrosion performance 2. Simulations provide mechanical performance required , for HPHT wells non-standard tubulars are required to meet the requested load cases 3. An iterative process with compromises is demanded for the casing selection i.e. 9 5/8” 53.5# with 8.5” drift, may not suitable due to reduction in safety factors, therefore alternative options are needed:  Specifications Utilise Non-Standard pipe dimensions,  10” 73.9# with 8.5” drift there are tolerances/variations ● Within each specifications and 90%min wall, 9 7/8” 66.9# with 8.5” drift and • Manufacturing (PSL level, Length, wall thickness, drift value) 90% min wall Modify steel grades: • Quality Control (NACE corrosion testing, NACE A/ NACE D)  Sour service, high to discuss with restricted yield strengthof the (7ksi) ● Each operator needs collapse, CRA, the supplier to agree range Update/modify calculation input values specifications used for the manufacture of the pipe  Utilise the specification can provide an enhanced ISO 10400 collapse ● Optimising modified calculations for pipe performance i.e. product from the value current specifications  During the design and specification phase each of the above criteria needs to be considered. This can provide an enhanced product providing greater value for HPHT wells. 4 Vallourec Group
  5. 5. HPHT Materials – Risk Reduction1. Qualification tests - Materials ● Material Qualification Tests can be customer-specific. ● Typically, a major oil company requests the following tests:Localised Corrosion Tests Four-Point Bent Beam Tests Slow Strain TestsTensile Tests @ Elevated Temperature NACE A , D –in standard + field-specific solutions Collapse testing Providing both Pass /Fail and K1SSC result2. Manufacturing HPHT plan  Develop specific plan with Supplier Detail knowledge to enhance Quality assurance and performance properties  Include customer specific requirements  i.e. Marking, Inspection, Dimensional control including wall thickness, drift  Additional testing  Connection datasheets  Pipe datasheets  Utilise the enhanced specification levels within the standards  Inspection level to be performed i.e. API 5CT PSL level 2/3  Unique Quality plan developed 5 Vallourec Group

×