Frequently asked Questions

Pivotree is an offshore development concept that provides a path to market for owners and operators of stranded and marginal oil and gas fields. Pivotree halves the CAPEX, OPEX, abandonment expenditure, and time to first production.

The system can be used in water depths beyond the reach of fixed jackets and platforms and has the lowest environmental impact and abandonment burden in the industry.

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Pivotree’s patented mooring and production subsea tree provides station-keeping for a “Handysize” floating production storage and offtake vessel, thereby eliminating all but the minimum equipment required for safe and full function operations.

1) unlocks stranded and marginal fields,

2) de-risks resource appraisal and can be used to support an early production system, and

3) extends the life of aging assets by developing fields beyond the reach of subsea pipeline tiebacks.

  • Allows stranded or marginal projects to be capitalised.
  • Short field development and project life provide an agile investment profile.
  • Reduced environmental impact reduces regulatory hurdles.
  • Faster to first oil (18 months from FID).
  • Lower CAPEX, OPEX, and abandonment expenditure (40-70% less than other development concepts).
  • Mobile and reusable.
  • Minimal physical footprint.
  • Minimal abandonment liability.

There have been many attempts at small field development with varying success.

Pivotree has taken all the learnings to develop a full-function, minimum facility system suitable for the mid-water without compromising safety.

Pivotree is innovative enough to have been granted its first patent with more pending.

Total system CAPEX USD$150-180 million depending on customer requirements.

Leasing options are available to further reduce CAPEX.

  • First deployment: 8.5 million barrels (mboe).
  • Subsequent deployments: 3.5 million barrels (mboe).

(assumes oil price of USD$50/barrel)

  • The water depth is 50-500m. Up to 1000m is in development
  • Vessel/cargo size: minimum “Handysize” (50,000 DWT), 250,000 barrels (note that maximum load and vessel size is dependent on subsurface geology and met-ocean conditions)
  • Up to 3 wells depending on the distances between wells and the need for artificial lift.
  • Water injection is feasible, but gas lift is not currently possible.


Pivotree has been designed and engineered in compliance with all international codes and standards.

We have developed a comprehensive, multi-faceted, safety and operating system, that includes a range of safety mitigations and fail-safes to ensure safe operations.

Pivotree has received statements of Technology Feasibility and Endorsement of Qualification Plan from Det Norsk Veritas (DNV).


Independent studies by leading experts confirm the requirements necessary to operate Pivotree within the fatigue limits of the subsea well.

We work with customers to ensure the system is designed to operate at maximum capacity within safety limits.

Customers have the option to implement 24/7/365 real-time fatigue monitoring from leading providers.

The Pivotree technology is the result of millions of dollars and over five years of R&D in collaboration with world leading independent experts and suppliers.

Pivotree has received statements of Technology Feasibility and Endorsement of Qualification Plan from Det Norsk Veritas (DNV). We partnered with DNV throughout the development process to ensure independent validation.

All Pivotree units are rigorously tested before deployment .

Unit 001 is earmarked for deployment to a UK field in 2025.

Pivotree supplies the Pivotree subsea unit.

We work with our customers to specify and procure the additional components of the system from suitable suppliers (e.g., mooring hawser, flexible riser, Harvester vessel).

Our patented solution represents the only viable route to market for stranded fields. Pivotree aligns with our customers’ success by minimising upfront costs and sharing in the returns from the project.

We operate as a project management business, collaborating on development engineering, and producing units to order.

We are already engaging with over 30 customers to assess the technical and economic viability of Pivotree for use on their fields.

Pivotree is headquartered in Perth, Australia.

We have local agents servicing the UK, Norway, Malaysia, Singapore, Indonesia, Thailand, Brunei Darussalam, The Philippines and Africa.

Contact us today to start your enquiry.

The system is currently designed for use in water depths from 50m to 500m. Operation in water depths up to 1000 is in development.

Vessel size is dependent on subsurface geology and met-ocean conditions, which determine the maximum safe holding capacity of the Pivotree mooring.

For example, a fully loaded Handysize tanker (up to 50,000 DWT and approx. 250,000 barrels of cargo) operating as both production facility and offtake vessel, can be safely moored in poor geological conditions and withstand a 100-year return period storm off the coast of Western Australia.


Vessel size is dependent on subsurface geology and met-ocean conditions, which determine the maximum safe holding capacity of the Pivotree mooring. In suitable conditions, two vessels of an appropriate size can be moored to the Pivotree.

See our FAQ “What is the maximum vessel size?” for more detail.

A standard design for a topside facility has been completed for the purposes of determining the cost of development.

The actual production rates for any given field depend on the reservoir and fluid characteristics.

In development: we are working on a design to accommodate a slave tree connected to the main Pivotree using subsea umbilical lines.


The Pivotree subsea production tree has designed to handle multi-phase fluids.

According to data from Rystad Energy (2020), there are hundreds of fields comprising over 5.3 billion barrels of oil that would be deemed economically stranded, i.e., individual fields that are pre-FID, with recoverable reserves between 2.5-25 million barrels (mboe), in under 500m of water depth, and more than 10kms from offtake.

Top 10 market size by number of known stranded reserves (mboe) (2020 data by Rystad Energy)

  1. UK: 1.04 billion 
  2. Norway: 908 million 
  3. Brazil: 727 million 
  4. Nigeria:  362 million 
  5. Angola: 322 million 
  6. Malaysia: 307 million 
  7. China: 264 million 
  8. Vietnam: 193 million 
  9. Mexico: 172 million 
  10. Australia: 162 million 

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Let’s explore together how Pivotree can unlock the maximum value of your offshore development.