Horizontal Well Drilling Tools

Abstract

The invention discloses a horizontal well drilling tool which comprises a first drill rod connector, a second drill rod connector and a plurality of drill rod short sections which are located between the first drill rod connector and the second drill rod connector and connected in an end-to-end mode. Each drill rod short section comprises a bulb mechanism extending in the longitudinal direction and a bulb socket mechanism movably connected with the bulb mechanism; a first connecting part is arranged on the side wall of the bulb mechanism; a bulb is arranged at one end of the bulb mechanism; a plurality of track grooves distributed at intervals in the circumferential direction are formed in the side wall of the bulb; the bulb socket mechanism is provided with a spherical cavity for containing the bulb; a plurality of pin holes in one-to-one correspondence with the track grooves are formed in the wall of the spherical cavity; column pins partially extending into the track grooves are arranged in the pin holes; the column pins are in contact with the inner walls of the track grooves; and the bulb socket mechanism is provided with a second connecting part matched with the first connecting part.

Description

technical field [0001] The present application relates to the field of oil exploitation, in particular to a horizontal well drilling tool. Background technique [0002] In the petroleum industry, the ultra-short-radius sidetracking technology that simultaneously exploits multiple formations in the same well is one of the main means of increasing production in the modern era of petroleum exploitation. [0003] Radial horizontal wells are divided into long radius wells, medium radius wells, short radius wells and ultra-short radius wells according to different curvature radii. A well with a curvature radius greater than 500 meters is a long-radius well, a radius of curvature between 100 and 500 meters is a medium-radius well, a radius of curvature between 20 and 100 meters is a short-radius well, and a radius of curvature less than 20 meters is an ultra-short-radius well. A well with a shorter radius of curvature is more difficult to spud and has higher requirements for drill...

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a horizontal well drilling tool for ultra-short radius radial horizontal wells, so as to solve the defect that the horizontal well drilling tools with slotted and bent pipes in the prior art cannot go down well smoothly, and can drill out Ultra-short radius sidetracking horizontal well

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