Objective
In 3D surveys, the acquisition of the seismic data requires more and more traces (10000 traces) in order to increase the resolution for the imaging of complex structural geology.The following Polyse?s network system is aiming at this target.
The concept of this new network is rooted from the demonstration with Polyse?s in The Netherlands during June and July 1995. This demonstration was supported by EEC (contract DG/150/93 Polyse?s Ph.II) and more recently during a Polyse?s test in Indonesia (Mahacam Delat-borneo) with TOTAL.
The lossless compression algorithm developed at IFP has given the expected results and proven suitable for the purpose of the project.
The planned system based on the extension of the present Polyse?s, limited today to 1000 traces will be according to the following principle :
The complete array of a 3D is divided in some arrays, each one is handled by a Remote Recording Station-RRS- which records its own array of traces acquired by RTUs (Remote Telemetry Units).
These RRS are fully under the control of a Central Control Unit, the CCU which also received the data from all traces allows one operator to survey the complete 3D spread.
The exchanges between the CCU and all RRS are realized by radio transmission.
To minimize the number of radio frequency channels for all the system, one allocation algorithm will be used in the CCU. This algorithm will be an adaptation of the well known GSM system.
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Programme(s)
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Topic(s)
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Funding Scheme
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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
92500 Rueil Malmaison
France
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.