1. n. [Geophysics]
The location, acquisition and processing parameters, and other pertinent information attached to a well log, seismic record and traces.
2. n. [Production Facilities]
In a gathering system, a pipe arrangement that connects flowlines from several wellheads into a single gathering line. A header has production and testing valves to control the flow of each well, thus directing the produced fluids to production or testing vessels. Individual gas/oil ratios and well production rates of oil, gas and water can be assigned by opening and closing selected valves in a header and using individual metering equipment or separators.
See: flowline, gathering lines, gathering system, separator, wellhead
