Dry Wellhead Management
Manual gauges are frequently employed in the wellhead areas of offshore platforms to avoid excessive cableways that could provide transient passages for escaping gases into other areas in case of a blast in the wellhead area. Many companies are wary of wired instruments for this reason. As a result, platform personnel have to spend an excessive amount of time in this Class 1/Zone 1 hazardous area manually reading gauges and recording the values. Having wired instruments can be a benefit in providing accurate pressure, temperature, and flow measurements plus additional diagnostic information about the condition of the wellheads.
Global Exergy solutions include a wide range of intrinsically safe instruments and junction boxes along with the knowledge of wiring to minimize opportunities for hot gases to pass through cable pathways. Even newer wireless transmitters can be installed on wellheads for highly accurate measurements with no installed wiring. Using the world standard wireless concept, transmissions from individual devices can follow a variety of paths to a gateway located outside the wellhead area. Signals from many different wireless devices are gathered and communicated directly to the distributed control system where all readings are automatically recorded. Control room operators have a full view of conditions in the wellhead area, improving the maintenance and management of this critical zone on most offshore facilities.