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Late last year, we concluded a major project with Oil Search Limited to design and deliver 14 lightweight mud system modules for its drilling operations in the highlands of Papua New Guinea.

TENSA’s pitch was to reduce the weight of the modules so that they could be lifted by a chinook helicopter without requiring them to be disassembled and lifted in 2 sections as was required in the past. Great attention was given to the module design by using lightweight materials and weight saving in the details and equipment. In addition, the use of thin stainless components and fibreglass will reduce the ongoing maintenance costs.

TENSA worked with our Chinese partner GN Solids to deliver a system that was fully compliant with Australian and international standards at a very reasonable cost and in a very short time frame. The entire project was completed in less than 6 months and the system has already been used successfully on its first gas exploration well.

Find out more about the Drilling Modules

In offshore operations, moving heavy equipment from and to vessels in a seastate can be a tricky business. The movement of the vessels can cause large dynamic loads to be applied to a crane when the load is lifted from the deck.

These loads, however, are not easily predicted with the current technology of ‘guesstimating’ the dynamic load by using the significant wave height (Hsig). Instead, TENSA’s off the shelf vessels motion monitoring system, the Dynamic Motion System (DMS), measures the load velocity directly which then allows the dynamics to be accurately calculated.

Here we list 5 potential applications for TENSA DMS motion monitoring system in the offshore operations to improve safety and efficiency:

Crane operations

TENSA DMS measures the vertical velocity of the load so that the appropriate crane chart for the lift can be selected directly.  There is a direct correlation between the measured velocity and the correct crane chart (charts are typically defined by seastate) that should be used. The DMS also offers crane operators powerful visualisation by displaying real time vessels motion, which allows the operators to time the lift on a rising wave and reduce the difficulties of estimating vertical motion of vessels at night or when looking down.

Helicopter operations

TENSA DMS motion monitoring information can also help measure safe operating conditions for offshore helicopter operations. While DMS doesn’t comply with the current onerous CAP437 requirements, DMS system can be developed to incorporate the Significant Heave Rates and Motion Severity Index data displays required by CAP437 at a fraction of the cost.

Monitoring of towed barges and cargoes

The TENSA DMS can be utilised as an inexpensive tool for fleet owners to assess and reduce their operational risk during towing operations. In particular cargo on towed barges experiences damage due to excessive motions. The DMS can send the barge motions wirelessly to the tow vessel and can log the data.

Offshore construction

TENSA DMS can be used to monitor vessel motions and locations during offshore construction phases such as floatovers and in FPSO connecting operations, using its wireless linked GPS and motion sensors. The TENSA DMS motion monitoring system delivers real time heave, pitch, roll, heading speed, course, position, accelerations at the sensor as well as at offset positions which could be the bow, stern roller, crane boom tip or an overboarding sheave on an A frame. Decisions as to whether conditions are suitable for work or whether weather downtime applies can be quantified and the logged data is available for reference. The DMS buoy can additionally be used for measuring wave heights and seastate as well as the other DMS functionality.

Personnel transfer

The TENSA DMS can measure vessel motions when personnel transfers are being contemplated. The DMS motion monitoring allows clear definitions of maximum tolerable conditions for safe transfer, hence significantly reducing the risk to personnel.

Visit our booth J1 at AOG 2018 to see a demonstration of the TENSA Dynamic Motion System (DMS). The DMS is available in different versions: DMS Max with wireless connectivity and inbuilt 24 hour  battery, the entry-level DMS Mini and the DMS Buoy, which is a DMS inside a portable buoy for delivering real time wave data.

TENSA is delighted to announce we have been awarded two innovation vouchers from National Energy Resources Australia (NERA).

The NERA innovation vouchers were awarded for our Active Heave Compensated (AHC) Pedestal and soon to be launched Roborigger, two products which deliver innovative solutions to technical challenges faced by various companies in the oil and gas and construction industries.

Our AHC Pedestal provides an alternative to using helicopters for transferring personnel from one vessel to another at offshore oil and gas facilities. The Pedestal reduces relative motion between vessels enabling a lightweight gangway on a small high speed vessel to match the motion of a larger vessel. If helicopters are replaced by vessels, transferring personnel becomes less costly and safer, improving health and safety as well as financial outcomes.

The Roborigger is a battery powered wireless device which uses gyroscopic and inertial forces to accurately rotate and orient loads. Moving and orientating heavy equipment can be a workplace health and safety challenge, the Roborigger will eliminate the need for personnel to land and unhook heavy loads. It has other applications including the ability to hold wind turbine blades stationery when they are being attached to the hub of a wind turbine and can also assist with pipelaying vessels as pipes are moved across from one vessel to another.

We are extremely proud of our innovative products and thank NERA for their recognition of our work.

Click here to see our full product range and please contact us if you would like further information: dmarkwell@tensaequipment.com.au

The Tensa Dynamic Motion System (DMS) is now market ready!

It has been a long process but our motion monitoring unit is The Tensa DMS has been tested to EN 60945 (portable equipment class) and all testing for CE and FCC certifications has now been completed. We are currently planning our DMS product launch for 2H 2017.

For more information on the DMS click here.