PDC drill bit matching tool

Abstract

The invention discloses a PDC drill bit matching tool. The PDC drill bit matching tool is characterized in that the two ends of a connecting column are fixedly connected with a nozzle connector and an end respectively, a cross-shaped protrusion matched with a drill bit water hole is arranged at the bottom of the nozzle connector, and an inner column is in threaded fit with a through hole; a plurality of annularly and evenly distributed grooves are formed in the outer wall of the end, close to the cross-shaped protrusion, of the inner column, the axes of the grooves are parallel to the axis of the inner column, first positioning blocks and second positioning blocks are fixed to the two ends of each groove correspondingly, sliding blocks are in sliding fit in each groove, and a first compressed spring is connected between each sliding block and the corresponding first positioning block; the ends, away from second scraping rods, of first scraping rods are hinged to the sliding blocks, and the ends, away from the first scraping rods, of the second scraping rods are hinged to the second positioning blocks; and the first scraping rods and the second scraping rods can be accommodated in the grooves. The PDC drill bit matching tool is used for solving the problems faced by disassembling a PDC drill bit nozzle taken out of a well on a drilling operation site, the purposes that the PDC drill bit nozzle taken out of the well can be disassembled more conveniently, other tools do not need to be used, and the operation difficulty of workers on site is lowered are achieved.

Description

technical field [0001] The invention relates to the field of drill bits, in particular to a PDC drill matching tool. Background technique [0002] As one of the important parts of the drill bit, the water hole of the drill bit has the function of cleaning the drill bit and the bottom of the well, and the installation of the nozzle through the water hole of the drill bit plays a role in hydraulic rock breaking, and can generate a balanced pressure distribution on the rock surface. The nozzle of the conventional drill bit It is cylindrical. [0003] PDC bit, also known as diamond bit, is made of polycrystalline diamond (thin disc shape) as a small cutting block, mounted or sintered on the bit body. With the popularization and application of PDC bits and the improvement of PDC cutter technology, fixed cutter PDC bits have gradually replaced roller cone bits in various formations. The nozzle of the PDC drill bit has four notches at the bottom, which needs to be installed on si...

AI Technical Summary

Problems solved by technology

[0004] However, the existing tools for removing and installing the nozzle of the drill bit have the following defects when disassembling the nozzle: (1) When the drill bit goes out of the well, it is often accompanied by mud bags, and there are a large amount of dense cuttings inside the nozzle. The cleaning process is very inconvenient and requires the use of other slender tools; (2) After the drill bit comes out of the well, cuttings often accumulate at the four gaps at the bottom of the nozzle, and it is difficult to directly engage the tool into the gaps. The tool picks up the cuttings in the notch so that the nozzle can be removed using the aforementioned tool

Images