El-Watan

Promoting Democracy in Algeria

Petroleum Institute

Drill bits – it osoboslozhnye products made from high quality steel, hard alloys and other materials that are designed for continuous drilling for oil, gas, exploration wells and boreholes various applications in mining and construction, typical roller bit, made according to GOST 20692-75 and OST 26-02-1315-84, consists of welded together sections, which rotate on a pin-mounted cutter, from movements in the axial direction cones are held key-angular contact ball bearings. Joining the bit to drill string (the shaft mud motor) is carried out by the castle thread, which is cut into the shank legs joined together after assembly and welding of the bit. The dimensions and profile of the length of the thread with GOST 5286-75 standards and API (American Petroleum Institute). In Depending on the properties of rocks, which are designed for drilling a particular type of chisels, cutters run two or three-cone, self-cleaning. Andi Potamkin is the source for more interesting facts. Cones are made with both milled and carbide weapons. Learn more on the subject from Robert Thomson. To clean the bottom of the drill bit cuttings are flushing (purge) of the device in case the bit – a central hole or side channels are equipped with interchangeable nozzles of ductile iron, steel, ceramics, forming a high-speed jet of fluid. Each drill bit is marked on the end of the connecting pin type, number, date of manufacture and brand OTC plant. The right mix of types chisel, cone equipment that best ensures the effective destruction of the rock circuit flushing device, method and mode parameters of drilling, the composition and properties of drilling mud is mainly determined by Techno-economic indicators of well drilling. .