Session 1 A – Oil & gas
Tuesday 10 June 09:00
Oil and gas end user experience on HIPed components
Freddy Busschaert, TOTAL E&P, Technology Division Subsea Department, Pau, France
Freddy Busschaert is welding engineer and material & welding expert since 2002 in the Technology Division Total Exploration & Production. Materials engineer specialized in equipment for LNG, and deep offshore. Since 2 years, materials expert in the Subsea Department. Long experience of welding technologies, acquired at Spie Batignolles, Areva and EDF for the nuclear and power generation industry. Member of the French Welding Society (SIS)
Hipped components have been widely and successfully used in oil and gas industries during the last decades. The paper will present an overview of TOTAL E&P as an end user on the use of the duplex stainless steels HIPed components on deep offshore subsea projects The paper will detailed the main reasons on the use of HIPed components to be selected. Among these reasons, some are listed here below:
– Good resistance to HISC
– Austenite spacing in regard to DNV RP F112 standard applicable to subsea
– Microstructure examination of duplex stainless steels with different etching reagents in order to reveal intermetallic phases or chromium nitrides
– Capability to manufacture complex shapes of components
– Project execution associated with local content activities
– Low temperature challenges
– Good weldability
The paper will also present some typical products which have been manufactured and incorporated in subsea production systems and will highlight some challenges in regard with the future.
Tuesday 10 June 09:30
Use of Hot Isostatic Pressed (HIP) duplex stainless steels for critical subsea applications
Henrik Larsson, GE Oil & Gas, Materials & Process Engineering, Department,Sandvika, Norway
With a M.Sc. in the field of metallurgy, Henrik Larsson is a material engineer in charge of material selection, welding’s and manufacturing activities since 2012 in GE Oil & Gas in Sandvika Norway. Also has a professional experience in the field of HIP process at Sandvik Powder Solutions in Surahammar Sweden and also experience in the field of process engineer (ESR process) at Uddeholm AB in Hagfors Sweden.
GE Oil & Gas has over the last 15 years utilized the Hot Isostatic Pressing (HIP) Process for a number of components for products and parts for subsea oil & gas equipment such as valve bodies, hub flanges, wye-pieces, Tee’s and header sections. Since introduction of DNV RP F112 in 2008 and more development of
HP-HT offshore oil & gas fields, HIP products have become more attractive when compared to e.g. forgings. The HIP process allows freedom in design to allow geometries and compact configurations which at the same time address stress & strain criteria in accordance to recommended practice DNV RP F112.
Tuesday 10 June 10:00
Perspectives of the application of high strength nickel base alloysby HIP in rotating equipment for oil & gas industry
Federico Iozzelli, GE Oil & Gas, Materials and Process Engineering, Firenze, Italy
With a PhD in materials engineering, Federico Iozzelli joined GE Oil&Gas in 2005 as Materials & Processes Lead Engineer. Federico has strong background in raw material special processes including investment casting, close die forging, sand casting, coating and powder metal by HIP. Federico is the Low Temperature MPE Manager since 2008.
One of the main challenges of oil&gas industry is facing more and more harsh environments that require increasing use of corrosion and heat-resistant alloys. Ni-base alloys like Inconel 625, and its variants, are currently applied for parts of centrifugal compressors. Anyway some designs are still very expensive or even not feasible to be achieved by conventional or non-conventional manufacturing solutions. Hot Isostatic Pressing is expected to overcome the above limitations and open new possibilities for production of Net-Shape or Near-Net Shape parts. Due to the requirements of quality and reliability of oil&gas market, the introduction of P/M parts consist in a complex process of assessment, characterization and development of the material (the powder), the HIP cycle and the product, including feasibility analysis and validation of the product. This paper is intended to show the main steps of the introduction of an impeller for centrifugal compressor made by Hot Isostatic Pressing. The topics covered are: the design of HIP tooling making use of state of art simulation methods, the optimization of the powder used and the development of non-destructive testing to verify the properties of the final part. The manufacturing process of HIP tooling is also considered. The paper also deal with the need to verify the applicability of HIP technology not limited to a single part but to a “family” of parts, using a design space partitioning approach.