Well inspections carried out by Brunei Shell Petroleum revealed that a significant number of wells were suffering from acute corrosion. Nautec was commissioned to provide long term well integrity services to optimise and extend the service life of their existing wells.
Brunei Shell Petroleum
This is an on-going campaign which will continue till 2020.
The scope of work included providing cleaning and grouting equipment, offshore crew and UHPC material.
The Offshore campaign was carried out during the non-monsoon season from March to October, completing 49 wells during the 2015 campaign. Nautec shared vessel with other operations units.
Removed the old cement and grouted with our high strength UHPC material with good bonding property for all the ageing wells between the surface casing and the conductor in order to stop the ingress of oxygen, which causes corrosion to steel structures and affects the well integrity.
Using our high strength material with zero shrinkage, stops the corrosion and at the same time strengthens the overall structure. By using our zone 2 rated cleaning equipment, cleaning can be done without hot work permit. Our cleaning unit is a 3-in-1 combination of hydraulic jack hammer, high pressure water jet and power supply minimizing the equipment footprint and reducing the number of lifts
Conductor and Well Repair Services – Provision of grouting services of conductors.
Assisting operators to manage and restore well integrity with proven and cost-effective grouting solutions ensuring sustainable corrosion protection and no interruption in production.