Apparatus and method for cleaning a gas well
OwnerJim Tomlinson, John Hickieinventors
Life of this patent
Estimating the term…
Abstract
An apparatus for cleaning a natural gas well bore, including a master valve capping the well bore, the master valve supporting a blowout preventor and injector head. The master valve is interconnected with a pressure vessel through a first control valve and the pressure vessel is interconnected with a compressor and with a gas pipeline through a second and a third control valves. The compressor provides compressed natural gas from the pressure vessel to the well bore through the injector head and the master valve via a tubing reel inserted into the well bore.
Claims7
An apparatus for cleaning a natural gas well bore, the apparatus comprising:
- a vehicle providing in combination:
- a master valve for capping the well bore, the master valve supporting a blowout preventor and an injector head mounted thereon;
- the master valve interconnected with a pressure vessel through a vessel control valve;
- the pressure vessel interconnected with a compressor and with an outgoing gas pipeline through control valves;
- the compressor providing compressed natural gas from the pressure vessel to the well bore through the injector, head and the master valve through a tubing taken from a tubing reel and then inserted into the well bore.
A method for cleaning a natural gas well bore, the method comprising the steps of:
- moving a vehicle mounted equipment having a compressor, pressure vessel and reel of tubing to a well site;
- capping a well bore with a master valve having a blowout preventor and injector head mounted thereon;
- interconnecting the master valve with a pressure vessel through a vessel control valve, interconnecting the pressure vessel with the compressor and with a outgoing gas pipeline through control valves respectively;
- providing compressed natural gas from the pressure vessel to the well bore through the compressor, injector head and the master valve with a tubing reel inserted into the well bore.
A method for cleaning a natural gas well bore, the method comprising the steps of:
- moving a vehicle to a well site, the vehicle providing a compressor joined with a pressure vessel and a tubing reel with coiled tubing;
- capping a well bore with a master valve having a blowout preventor and an injector head mounted thereon;
- interconnecting the master valve with a pressure vessel through a vessel control valve;
- interconnecting the pressure vessel with a compressor and with an outgoing pipeline through further control valves;
- providing a bypass line from the master valve to the pipeline and providing a check valve and a control valve in a line between the pressure vessel and the pipline;
- introducing the coiled tubing into the injector head and with the master valve open inserting the coiled tubing into the well bore;
- closing the blowout preventor to cause a seal around the coiled tubing;
- extracting natural gas from the well bore into the pressure vessel;
- compressing the extracted natural gas taken from the pressure vessel;
- injecting the compressed natural gas into the well bore;
- extracting well bore clogging materials from the well bore and into the pressure vessel;
- withdrawing the coiled tubing into the blowout preventor;
- closing the master valve;
- and compressing any remaining natural gas and delivering said gas to the pipeline.
Dependencies are inferred from the claim text.