WELL BUILDING PLANT Russian patent published in 2013 - IPC E21B7/00 

FIELD: oil and gas industry.

SUBSTANCE: plant contains wellhead equipment, drill device, pulling-and-running mechanism, auxiliary equipment and tools. It is provided with mobile drilling device, chambers filled with fuel components, coolant and pressure gas. It is equipped with the following: programmed control unit, gas and slurry distributing system, device for separation of drilling slurry, mechanism for preliminary fixation of wall of driven well. Equipment of wellhead is designed as a preventer equipped in its cavities with chambers with fuel components, coolant and pressure gas. Preventer chambers have tubes for filling chambers and connection pipes for components removal. Preventer guide forming wellhead is provided with power driven catchers for mobile drilling device designed as a self-contained unit with module blocks, which are series-connected: working rock destruction tool, generator of working agent, chambers filled with pressure gas, coolant, fuel components, additional pressure gas bottle, additional generator of working agent, chamber with coolant, programmed unit for control of work of valve openings and manifolds connecting the module blocks of self-contained drilling device.

EFFECT: improving efficiency of well driving and increasing efficiency of used drilling device.

13 cl, 13 dwg