Mechanical and corrosion testing for pipelines

The customer

Maersk Oil is an international oil and gas company with a track record spanning more than 40 years. Maersk Oil’s total operated production is about 557,000 barrels of oil equivalent per day. Production takes place in Denmark, the UK, Qatar, Kazakhstan, Brazil and Algeria. The company has exploration activities in Angola, Norway, the US Gulf of Mexico, Greenland, Iraqi Kurdistan and in the producing countries.

The challenge

Maersk required a testing partner to provide material selection and qualification and a programme of mechanical and corrosion testing for down-hole tubulars to be deployed its North Sea Culzean Field Development Project.

The solution

Exova was awarded an exclusive contract to provide a testing programme, bespoke to Maersk’s requirements, which replicated the sour and ultra-high pressure/high temperature (uHP/HT) sub-surface conditions found in the Culzean field.

Mechanical tests were performed to characterise the properties of the materials and autoclave corrosion testing undertaken, with the aim of selecting the optimum material and qualifying the supplier and manufacturing route.

The Culzean Field operating conditions are particularly harsh in terms of corrosion, due to the combination of temperature, pressure and chloride concentration. The investment Exova made in our specialist corrosion centre in Dudley, and the technically demanding services we provide, means that Maersk had access to the extensive autoclave test facilities required to meet their testing requirements.

Exova’s corrosion testing capabilities cover a wide range of industry requirements. Exova’s global network of corrosion testing laboratories specialise in the qualification of materials for “sour” service applications and offer standard Hydrogen Induced Cracking (HIC), Sulphide Stress Cracking (SSC) tests and also more specialised autoclave corrosion (Stress Corrosion Cracking Tests), Full Ring and Stress Orientated Hydrogen Induced Cracking (SOHIC) tests.

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