Kaombo is a major ultra-deepwater offshore project for Angola which is taking place in highly challenging sweet and sour service. With a production capacity of 230,000 barrels per day, Kaombo will develop estimated reserves of 650 million barrels. Pipelaying is expected to begin early 2016 on the project which will involve 59 subsea wells connected by 300km of pipelines at water depths of 1400m down to 1950m.
Exova was awarded a £2.5 million contract by CRC–Evans Offshore to provide pipeline material, welding and AUT qualification testing for the Kaombo Project. As well as AUT validation, the pre-production qualification requirements include mechanical testing, fracture mechanics, fatigue and sulphide stress cracking corrosion tests.
Four of Exova’s specialised laboratoriesare involved in delivering the technically demanding services. Crack Tip Opening Displacement (CTOD) and Routine Mechanical testing will be carried out in Edinburgh, with Exova’s Corrosion Centre in Dudley performing the Sulphide Stress Corrosion tests, and Single Edge Notched Tension (SENT) and full scale riser fatigue testing conducted at Daventry. The large number of specimens requiring sub-sized straining and ageing are being shared between Exova’s Daventry and Spijkenisse, Netherlands facility.
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