METHOD OF PIPELESS WELL CASING AND RELATED DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2010 - IPC E21B33/138 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions refers to oil and gas industry, more specifically to methods and devices for construction of well support, applied in oil and gas well construction. The method involves layering of a cementing compound supplied from the well head through a carrying element on the well walls with a pattern extruder while lifted. The device comprises a carrying element whereon there is mounted extruder with a tapered tip having apertures for the cementing compound. In the device, there is a fluid bypass channel while lifting and a pump regulating the supply process and components of the cementing composition, and a controller which regulates operation of the pump and active centralisers located on the body of the device. Also the body of the device, there are sensors metering the distance of the extruder to the well walls and transferring the received information to the controller.

EFFECT: invention provides reliable, uniform extended well support up to the whole length of the well without using the casing pipes.

4 cl, 1 dwg