In May 2012 Nautec undertook grouting of 1 jacket and 1 Tripod at the PLQP (Process Cum Living Quarters Platform). The PLQP Jacket along with a flare tripod was to be installed in the Deen Dayal West Field, which is situated in the Krishna Godavari (KG) Basin block KG-OSN-2001/3, 15 km South-East offshore Kakinada, Andhra Pradesh, India.
Nautec was commissioned by Heerema Marine Contractors (HMC) to carry out grouting services. Larsen and Toubro (L&T) awarded the Process Cum Living Quarters Platform (PLQP) Installation Contract to HMC.
The PLQP Jacket along with a flare tripod was to be installed in the Deen Dayal West Field. The PLQP platform was bridge-linked to the existing DDW1 wellhead platform. A flare tripod was to be installed to support the flare bridge. The client required a UHPC grout for the main and skirt pile grouting for the project. Nautec undertook the grouting of 4 main and 8 skirt piles including the jacket and the flare tripod.
Grouting was performed in 2 stages, initial stage of grout plug and secondary grouting using “bottom to top” method. Actual grouting time utilised for pure grouting for 4 skirt piles and 4 main piles was 3.5 days. Crew was demobed post PLQP jacket grouting and re-mobed in Jan 2013 for grouting of 4 skirt piles of flare tripod.
Grouting of 4 main and 8 skirt piles including the jacket and the flare tripod using Nautec’s NaX® Q110 UHPC grout, which has an average 28 day strength of 110 MPa.
Nautec mobilised the material and fabricated silos to Semi-Submersible Crane Vessel (SSCV) Hermod offshore Singapore at a very short mobilisation notice. Nautec also fabricated and mobilised a state of the art grouting spread fully automised and as per stringent specifications and needs of HMC and L&T.
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