Objective
To demonstrate the feasibility of preforming wireline service from a Monohull Vessel thus drastically reducing the cost of such operations.
The Basic Offshore Trial unit demonstrated the feasibility of this mode of operation.
Numerous improvements were identified as a results of the trial. These particularly concerned the subsea lubricator which displayed several undesirable characteristics of a troublesome and time-consuming nature. A more robust Derrick and compensation unit was also indicated to be desirable when operating over more complex xmas trees.
Project has been abandoned.
Wireline interventions are an accepted method of performing a wide variety of downhole maintenance, inspection and monitoring taks. These taks are normally performed either from the Platform Celler Deck or from the Deck of a Semi Submersible Work-Over Vessel in the case of subsea completions. In both cases a riser from seabed to deck (either permanent riser or temporarily installed) is used as the means of access to the borehole.
this project targeted the ability of a high-technology Field Support Vessel to be used in place of the much more expensive Semi-Submersible Work-Over Vessel.
To achieve the project objectives a design study was undertaken which defined the necessary parameters that would be required by a system.
Operational availibility; the range of tasks that could be required; the motion response characteristics and many other factors were considered.
A Basic Offshore Trial Unit was engineered and built during 1985. This basic unit was aimed at an early demonstration that the system could be successfully operated in the North Sea. The system was deployed on the British Argyll in june 1986 and successfully performed a trial operation on a Duncan well under the operatorship of Hamilton Brothers Oil + Gas Ltd.
The system comprised a Derrick and Heave compensated load and wireline units together with a subsea lubricator. The whole system was mounted on a Dynamically Positioned; Roll-Stabilised; Twin-Moonpol support vessel the BRITISH ARGYLL which is owned and operated by APT's parent company British Underwater Engineering Ltd.
Since successful demonstration of the basic unit the project has progressed. Its current status is that a commercially viable unit is now being constructed which embodies the lessons from the Basic Offshore Trial. In particular APT are totally redesigning the Subsea Lubricator element so as to provide access for both slick line and electric braided cable applications. This technology continues to be supported by oil company operators. In particular the support of Amerada Hess is to be acknowledged in the forthcoming build phase.
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
W6 8DM London
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.