SCADA over TETRA
control and supervision of extraction wells
In the Oil&Gas
market it is fundamental to have control and supervision
of what occurs in the extraction areas
. That's why the wells are controlled by remote using a specific SCADA system
that allows to supervise the areas of interest in the different extraction wells located in the territory. It is not always possible to install an optical fiber network to transfer data due to high costs and obstacles faced in setting up.
A very important client requested us a different solution
to create a network redundancy for the SCADA system that deals with the control and supervision of 26 gas extraction wells
in Algeria. The suggested standard radio for the coverage of these wells is the TETRA
. This kind of trunked radio standard is designed for medium-size areas with a high density of users and it is the most suitable to transfer the data coming from the RTU, thanks to the ‘IP packet data’
version conceived just for information transfer.
The fundamental problem is to connect
two devices such as TETRA Motorola MTM800 Radio Base,
that handles the transmission of data to the DCS
in the control station, to thethird parts RTU
, that collects data from the devices. In that specific case, the Yokogawa RTU uses the Modbus
communication protocol. Therefore there is a problem of interconnection between the third parts RTU operating in the Modbus protocol and the radio network TETRA.