sample projects 2

Various arrangements for riser hangoff or trip-saver mode in deepwater to reduce non-productive riser pulling operations have been developed.   In order to accommodate rig motion, a gimbal arrangement has to be incorporated and some have included complex hydraulic cylinder and accumulator arrangements.  The Hampco system adopts tried and tested ball-joint type technology with spherically-surfaced lubricated male and female mating surfaces engaging within a horseshoe-type landing collar.  The male surface is incorporated/installed on a standard riser pup joint. 

This project required hydraulic pawl and lift and roll systems for rig skidding within a self-erecting tender rig.  These were custom units designed, manufactured and delivered in under 10 weeks.  

This turnkey project involved the repair and re-engineering of a 25-year old gantry crane, the manufacturer of which was no longer in business.   The unit was removed from the rig in a shipyard in Mississippi,  refurbished and re-installed.  Upgrades included the design and supply of new hoist winches with integrated emergency disc brakes.  Hampco's scope included the work and technicians onsite, DNV approvals and all  project management. 

Hampco removed an early generation BJ pipe racking system and performed extensive repairs and upgrading with modern standard equivalent parts.   Where direct replacements were not available, detailed engineering assessment and minor modifications were made to extend the life of the equipment significantly. 

A customer in Brazil required a system to maneuver heavy (6,000kg) casing tongs on the drillfloor of their drillships.  Hampco offered a concept of hydraulic custom push-pull and slew arms whereby the vertical load was supported by adjustable hangoff wires mounted under the derrick crown blocks.  Time was very limited and we had to design,  manufacture and install 4 units in a maximum of 12 weeks including the drillfloor foundations with ABS approval.  Owing to the deadline, all hardware was sourced and manufacturing carried out in Brazil.  This required an intense level of cooperation between Hampco's project team and all suppliers but the project was successfully completed several days ahead of schedule. 

Hampco has designed and supplied a variety of tree handling systems from wire and hydraulic skidding to overboard tree running and splashzone guidance systems. 

This project required the fast track design and manufacture of storage and transportation boxes for deepwater riser bolts. 

Two hydraulic access baskets were required to be installed at racking board level on a later generation semi-submersible for racker maintenance.  Owing to the high utilization of the derrick structure,  loads had to be distributed through the horizontal girts rather than directly into the leg but due to the derrick taper and congestion, the resulting design was especially unique in order to permit fast and effective installation by the rig crew offshore. 

Projects have included a wide range of modifications, studies and upgrades of stack frames and HP piping through to design of complete stack frames. 

Hampco has completed a wide variety of BOP handling projects including new design, upgrade and repair.   One example involved the upgrade and life extension of an early-generation BOP lift tower and transporter system and pre-engineering of an alternative replacement in the event that the upgrade and life extension proved impractical. 

Access to a platform in the North Sea was required from a new harsh-environment jack-up. Hampco was contracted shortly before delivery of the rig from a Singapore yard to develop an access concept and complete all engineering design and approvals with DNVGL.  A new personnel transfer standard had just been implemented by DNVGL which required additional review and evaluation but all design, approvals and  manufacture were achieved in a very tight delivery schedule.  The completed access tower and gangway were transported with the rig and installed in Invergordon, Scotland. 

A few hydraulic hoses had to be run from a large, latest generation jack up in the North Sea down to a platform and it was not practical to utilize the connecting personnel gangway due to operational limits.  A  support platform and chain catenary with a custom hose clamp system was developed to ensure hose integrity in severe weather conditions.  Due to the variability in deflection, harmonics and vibration from VIV, a  tensioning adjustment winch was also incorporated.