BT-5000 Midwater Drilling Semi

In November 2014, Bassoe Technology was contracted by CIMC Raffles to perform the basic design of a BT-5000 Midwater Drilling Semi. Bassoe Technology had, during 2014, developed the BT-5000 concept in close cooperation with CIMC OEI (Offshore Engineering Institute) and CIMC Raffles now placed the order in anticipation of the rising market demand for replacing the aging fleet of midwater drilling units. The BT-5000 MWS was CIMC Offshore’s next strategic semi-submersible product. In 2016, the basic design of the BT-5000 was completed.

BT-4000 Etesco Interventor

In 2013, Bassoe Technology, was contracted by DSIC for basic design of the BT-4000 unit, a concept specifically designed to meet Petrobras light work over unit requirements, aiming to reduce well intervention cost and further increase well productivity in deep water environment. Brazilian contractor Etesco was intended to carry out light workover operations offshore Brazil in Campos and Santos Basin on a four-year charter with start 2016 at delivery of the BT-4000 LWO
semi-submersible Etesco Interventor. Due to changes in the market, the contract was cancelled.

Helix Well Intervention Semi-submersible Unit

Bassoe Technology has developed and designed next generation Well Intervention ultra deepwater Semi-submersible Unit for operator Helix ESG. The Well intervention Semi, the Q5000 is designed for Gulf of Mexico, Brazil and W of Africa environmental conditions and is design with operational capabilities, as well as Health-Safety-Environment, in focus.

The Q5000 being built by Jurong Shipbuilding in Singapore, is designed for full time intervention, top hole drilling, well testing, subsea construction, open water completions, through-tube well intervention services. Bassoe Technology has performed concept and basic design engineering for the Unit, and detail engineering including motion, station keeping, stability analyses, structural global and local analyses, marine outfitting, and marine system design.

The Q5000 is designed in accordance with ABS +A1 Column-stabilized Drilling Unit 2012 MODU rules and shall meet IMO rules and regulations. For more information see Upstream, and Offshore Engineer Digital Archive Special Supplement October 2012 (requires login).

BT-3500TSV Atlantica Delta

In 2013, Bassoe Technology was contracted by DSIC for the basic design of a second BT-3500 unit. The unit was operated by Atlantica Tender Drilling for Total Congo in the Moho Nord exploration and production project - the largest oil project ever in Congo.

In September 2016, the Atlantica Delta unit begun running drilling riser on the first of 17 wells in the well development program. Atlantica Delta was operated alongside the Moho Nord TLWP. Processing was made on the floating production unit Likouf.

BT-HTB Atlantica Gamma

In 2012, Bassoe Technology was contracted by DSIC for the basic design of a Heavy Tender Barge to be operated west of Africa by Atlantica Tender Drilling.

In May 2014, The BT-HTB Atlantica Gamma was successfully undocked at DSIC, Dalian. However, the modular mast equipment package under construction in the US fell well behind the original schedule and as a direct consequence, Atlantica Tender Drilling terminated the construction contract of the BT-HTB with DSIC.

For specifics regarding the BT-HTB design, read more here.

MWP Mark II

Bassoe Technology was selected by Marcon Windpower AB to develop a jack-up platform for wind power systems offshore. The design of the jack-up wind power platform is based on a 3.6 MW wind power package for the UK sector in the North Sea. Bassoe Technology has calculated the dynamic response for the jack-up, due to waves and winds in water depths of 45 m. Maximum spud can reaction forces was calculated and structural strength analyses was performed for two water depths. Structural analyses were performed both in open water conditions and in ice operation conditions.

A jack-up unit gives several advantages, it can be fully commissioned at the building site, offshore installation site activities are minimized with no lifting actions, decommissioning is easily performed as a reverse installation operation, After the planned service period the jack-up can be used for renewed service at another location. The first unit installed was designed for wind measurement at the South Midsjo Banks in the Baltic Sea. This jack-up unit is equipped with a 90 m high tower for wind data collection.

BT-3500TSV BassDrill Beta

In 2010, Bassoe Technology was contracted by DSIC for the basic design of a BT-3500 unit to be operated by Atlantica Tender Drilling for Petrobras alongside Petrobras' P61 TLWP (Tension Leg Wellhead Platform) at the Papa-Terra Field Development offshore Brazil.

In April 2013, The BassDrill Beta semi-submersible was successfully floated out from DSIC, Dalian. In November 2014 it had successfully installed its Mast Equipment Package onto the Petrobras P61 TLWP in Campos Basin and in December 2014, it started its operational activities as part of the first development in Brazil using a semi-submersible tender drilling unit.

BT-MTB BassDrill Alpha

Bassoe Technology has developed two Tender Barges for BassDrill Management Ltd, Houston, USA. Based on the class approved Light Tender Support Drilling Barge Bassoe Technology designed for BassDrill in 2008, a Medium Tender Support Drilling Barge with increased space and capacities for operations in water depths between 5 and 200 m was designed and built based on ABS class approved drawings developed by Bassoe Technology.

The non-propelled barge, BassDrill Alpha, has an accommodation for 112 people onboard. The design is made in accordance with ABS class notation +A1 Unrestricted Service Barges, and the barge is in compliance with the latest amendments to the MODU and Solas codes. The BassDrill Alpha was fabricated and delivered from Lamprell Energy Ltd facilities in the UAE in 2010 and has operated offshore Congo, West Africa.

DSME 6000M and DSME 7000

Bassoe Technology was selected by DSME, Korea for the development of their new compact drilling semi-submersible. Inspite of recently built semi-submersible projects, DSME decided to single source the work with Bassoe Technology. The project is based on a concept sizing and optimization of the hull by Bassoe Technology and is jointly developed by DSME and Bassoe Technology. The DSME 6000M is approved by ABS. The DSME 6000M is a deepwater drilling unit based on requirements set forth by Petrobras. The Unit's basic version layout include a DP-2 configuration. However, due to optimized layout of engine rooms and electrical rooms, the Unit can meet DP-3 requirements by small layout modifications. More information about the DSME 6000M can be found here.

Bassoe Technology was asked by DSME to enhance the DSME 6000M for operation in deepwater in Gulf of Mexico. The DSME7000 has been increased for larger VDL and water depth capacity. The DSME 7000 is designed for station keeping meeting the IMO DP Class 3.

SWS-12000 Ultra Deepwater DP Drillship

The Chinese builder Shanghai Waigaoqiao Shipyard has selected Bassoe Technology for developing a 69,000 metric tonnes ultra deep water drillship. The project is based on a marketing survey made by Bassoe Technology to determine the optimal size for a new drillship. The SWS-12000 hull geometry is based on the BT-MDS hull, a 50,000+ metric tonnes drillship for high transit speed.

The SWS-12000 is sized and designed for utilizing a dual activity derrick and offers a large extent of flexibility regarding drilling equipment and crane solutions. A large degree of integration of the drilling equipment in the hull has resulted in a optimized size and resulted in a state of the art drillship design. The vessel can handle drilling packages from all market leading vendors, including dual activity derrick, N-line or conventional tensioners and up to six mud pumps for three completely segregated mud systems. The vessel's station keeping meets the IMO requirements for DP Class 3.

Extensive wind tunnel and model tests have been performed for the SWS-12000, including optimization of the moon pool configuration.

Peab and West Wind

Bassoe Technology was contracted by PEAB to design the wind turbine installation vessel for Lake Vänern, Sweden. The design met the DNV requirements and DNV submitted a Maritime Certificate for the vessel.