What We Do - A Quick Job Experience Summary
Since 1997, Bennett & Associates has had the privilege of working with some of the world's leading companies to provide innovative solutions and workable designs for various offshore applications. Although we are proud of what we have accomplished, we still continue to pursue excellence in our innovation. Here is short list of some of the things we do. Please contact us to request more information.
Design and Upgrade Of Jack-Up Drilling Units
Bennett and Associates has provided the design engineering and drafting services for many jack up upgrades. Among others, Bennett provided design and drawings to Transocean Inc for the upgrade of the Trident XV Jack
Up. The Trident XV upgrade included a new drill floor, upgrades to the cantilever beam, extending its drilling
envelope as well as various mechanical and electrical system upgrades. Working with KeppelFels, Bennett
provided engineering for the upgrade of four Mod-0 jack ups to extend their capabilities to 300 ft water depth. In
addition to adding leg length, the upgrade included the addition of a Manual Fixation System, upgrades to the hull
and spud cans. Bennett also worked with KeppelFels designing the B-Class jack up, and helped with the A-Class and N-Class
designs. Bennett has done a number of cantilever beam upgrades for different jack up designs for ENSCO
International, and was involved on some of the post-upgrade work on the Atwood Vicksburg, a LeTourneau unit
that was converted from a slot jack up (84S LeTourneau) to a cantilever jack up.
Click HERE For More Jack-Up Info
Site Specific Assessment of Jack-Ups
Bennett and Associates has been providing consulting services to Independent and Major Oil companies as well
as to Drilling Contractors, performing detailed penetration analyses, SNAME 5.5A Assessments, Punch-through
recovery assistance, leg and spudcan repair guidance, for locations in the Gulf of Mexico, the North Sea,
Australia, Southeast Asia, India, the Middle East, Canada and South America.
Bennett was contracted by a liftboat operator to design a 4-legged (truss-leg) liftboat suitable for operating in the
southern part of the North Sea, and off the coast of India, having two very specific requirements: The first
requirement was that the liftboat be capable of withstanding 85-knot winds and 52ft waves in 250ft water depth,
and the second requirement was that the maximum bearing pressure on the spud cans be 2ksf.
The design was not finalized; however, due to a change in priorities by the client. This design called for trusslegs
with chord-to-chord spacing of 10 meters, and spud cans having over 3,500 sq. ft. of area.
In light of the burgeoning offshore wind-farm industry, Bennett has seen an increase in the number of requests for wind installation and / or wind-farm service vessels. As a result, the Bennett team rose to the challenge to design several lift-boats which will serve the wind-farm sector. To find out more about our wind installation / service vessels, please click the link below.
Click Here For More Liftboat Info.
MinDOC "Titan" For ATP Oil And Gas
The Bennett team is very proud to have contributed to the design and construction process of the first MinDOC deep-draft floating production system (Later known as the ATP "Titan"). Initially concieved in the 90's by our founder William "Bill" Bennett and offshore drilling platform pioneer Alden "Doc" Laborde, the MinDOC Titan was placed into service in the Gulf of Mexico and saw first oil in Early 2010.
Bennett engineers not only took Mr Bennett's concept and produced a hull basic design package, but also closely supervised the detailed design process. During the construction phase of the project, Bennett enginners provided on-site support and guidance to the fabrication yard. The on-site team also played a quality assurance role to enforce construction standards. Furthermore, project support also
included providing personnel on site during installation for upending of the hull and final commissioning.
Click Here For More Info on the MinDOC "Titan" for ATP.
Q4000 Multi-Purpose Semi-Submersible Unit
Bennett & Associates was selected for the Basic Design development of the Unit and was later chosen for the
Detail Design Package. The scope of work included General Arrangement drawings, Global Structural and
Fatigue Analyses, Redundancy Analysis, all Naval Architecture including the Stability Analysis and Loading
Conditions, Marine Operating Manual, Structural Detail Drawings, Outfitting Drawings, Mechanical/Piping
Drawing, Heating and Ventilation as well as Quarters Outfitting. Bennett Engineers were also responsible for updating all the
Basic Design Plans, excluding General Arrangements, as the final configuration was developed to satisfy ABS,
USCG and the Customers' requirements. Post-construction, Bennett coordinated the inclining experiment and participated in the final sea trials.
Main Pass Energy Hub Deepwater LNG Terminal (SOFTBERTH™)
Bennett and Associates was engaged by Freeport McMoran Energy LLC to design a floating system for mooring
an LNG Carrier adjacent to an existing fixed platform in approximately 70m water depth, to unload LNG, to be
vaporized on the fixed platforms and stored in salt caverns. BASS co-patented the Soft-BerthTM system allowing
for 95% operability. The Soft-Berth system consists of a pair of berthing dolphins (triangular Semisubmersibles)
and surface buoys anchored to the seabed, providing a tuned system to allow 1st-Order vessel
motions while resisting steady and slow-frequency loads maintaining the manifold of the LNGC within the
operational limits of the unloading arm. BASS assisted in obtaining Coast Guard approval for the concept, and is
continuing to support the client as it seeks funds to start the terminal.
Click Here For More Info on the SOFTBERTH™ system for the Main Pass Energy Hub.
Inclination / Lowering And Launching of first B-Class Hull
Bennett and Associates was engaged by KeppelAmfels to analyze the pre-launching inclination effects on the legs
of the first B-Class Jack Up due to the expected Rack Phase Differential (RPD) expected during jacking to a 6-
degree hull inclination. BASS established maximum RPD curves, and made recommendations on the sequence of
jacking. Additionally, BASS used SIMO software to create time-domain simulations of the hull being launched
on the 6-degree incline after cutting the trigger plate and entering the water to ensure the canal had sufficient
depth to avoid damage to the hull.
Papers And Publications
BASS personnel have authored a number of papers at various international conferences, as well as a Jack-Up
primer in conjunction with personnel from Offshore Technology Development. You may view a list of papers HERE and download a copy of the Jack-Up Primer HERE.
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