The first of 17 production top tension risers (TTR) have been installed on Total E&P’s Moho Nord field offshore Congo (Brazzaville). Total started production at Moho Nord field earlier this year (OGJ Online, Mar. 15, 2017).
Contractor 2H Offshore installed and tensioned up the first TTR and ran pressure tests before the completion drilling phase through the TTR. The installation was done on the tension leg platform in about 800 m of water.
The TLP was designed to allow simultaneous operations during drilling, production, completion, and coiled tubing intervention.
The TTRs were designed for a 25-year lifespan and can be fitted on any of the 27 well slots in the field. The first 17 are to be installed within 5 years.
Moho Nord field was developed through 34 wells tied back to a TLP and to Likouf, a floating production unit. Oil is processed on Likouf and then transported by pipeline to the Djeno onshore terminal.
2H Offshore specializes in the design, structural analysis, and integrity management of riser and conductor systems used in offshore drilling and production.
