System and method for supplying natural gas to a sales line
View Patent ↗A system is disclosed for supplying natural gas to a sales line, the system comprising: an inlet connected to receive natural gas from a well; an outlet connected to discharge the natural gas to a sales line; piping between the inlet and the outlet; a moisture sensor on the piping for detection of a predetermined moisture level in the natural gas; a shutdown valve, on the piping, connected to close upon detection by the moisture sensor of a moisture level at or above the predetermined moisture level; an odorant addition unit on the piping; and a gas analyzer on the piping for tracking the volume and heating value of natural gas discharged through the outlet. A method of supplying natural gas to a sales line is also disclosed.
1. A system for supplying natural gas to a sales line, the system comprising:
an inlet connected to receive natural gas from a well;
an outlet connected to discharge the natural gas to a sales line;
piping between the inlet and the outlet, the piping including a check valve and a hydrogen sulfide sensor;
a separator on the piping for at least partial removal of liquids and solids from the natural gas;
a heater connected to receive natural gas from the piping;
a moisture sensor on the piping for detection of a predetermined moisture level in the natural gas;
a shutdown valve, on the piping, connected to close upon detection by the moisture sensor of a moisture level at or above the predetermined moisture level;
an odorant addition unit on the piping;
a gas analyzer on the piping for tracking the heating value of natural gas discharged through the outlet, the gas analyzer comprising a cylinder that may be removed from the gas analyzer for use in determining compensation for the natural gas discharged through the outlet;
an instrument gas takeoff, connected to receive natural gas from the piping to supply instrument pressure to the shutdown valve;
a meter for tracking the volume of natural gas discharged through the outlet;
a controller connected for controlling operation of the moisture sensor, the shutdown valve, the odorant addition unit, and the gas analyzer; and
in which the system is configured to be portable on wheels or a skid, and the heater, moisture sensor, shutdown valve, odorant addition unit, gas analyzer, and instrument gas takeoff are contained within a housing mounted on the wheels or skid.
2. The system of claim 1 in which the heater is a catadyne heater.
3. The system of claim 1 located at a well site, the sales line is connected to supply natural gas to one or more buildings and further comprising a bypass on the piping for bypassing the gas analyzer and the odorant addition unit.
4. The system of claim 3 in which the separator comprises a Y strainer.