Split-type cone drill bit

A roller cone bit and split technology, which is applied to drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of high labor intensity of workers, high quality of roller cones, inconvenient replacement of roller cones, etc., and achieve convenient and fast installation and replacement. Guarantee the effect of integration and quick installation

Pending Publication Date: 2019-04-16
CANGZHOU GREAT DRILL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the problem of the integrated connection between the palm and the palm seat of the existing roller cone bit, the overall quality of the roller cone is large, and when a single roller cone is replaced, the labor intensity of the worker is high, and the replacement of the roller cone is inconvenient problem, the present invention provides a split roller cone bit

Method used

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  • Split-type cone drill bit
  • Split-type cone drill bit
  • Split-type cone drill bit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]The split-type roller cone 1 drill bit of the present invention includes a palm seat 3, three palms 2 distributed in a ring are arranged on the upper end of the palm seat 3, and any tooth palm 2 is rotatably connected with a cone 1; the tooth palm 2 and the palm seat 3 The middle part of the palm seat 3 is provided with a placement groove 310, the inner wall of the lower end of the placement groove 310 is provided with a first internal thread 320, and the middle part of the palm seat 3 is provided with a compression unit for compressing the tooth palm 2. The lower end of the unit is connected with a connecting end that matches with the first internal thread 320 .

[0035] After adopting the above-mentioned technical scheme, the tooth palm 2 and the palm seat 3 of the present invention are arranged separately, which is convenient to remove the cone 1 along with the tooth palm 2, and facilitates the maintenance of a certain cone 1. A certain tooth palm 2 or cone 1 on the b...

Embodiment 2

[0037] This embodiment is further optimized on the basis of Embodiment 1 as follows: the lower end of the tooth palm 2 is an inclined surface, and at least one slider is provided at the lower end of the tooth palm 2, the cross-sectional shape of the slider is dovetail or I-shaped, and the palm seat 3 is provided with a chute 330 matching with the slider, the upper end of the chute 330 runs through the outer wall of the palm rest 3, and the lower end of the chute 330 does not go through the side wall of the palm rest 3.

[0038] After adopting the above-mentioned technical scheme, the contact surface between the tooth palm 2 and the palm seat 3 is an inclined surface, and at least one slider is used to ensure that the tooth palm 2 and the palm seat 3 can be accurately positioned when they are installed, and quick installation can be realized. The shape is dovetail or I-shaped, which can be accurately positioned and quickly installed, while ensuring the integrity of the tooth pal...

Embodiment 3

[0040] This embodiment is further optimized on the basis of Embodiment 1 as follows: the compression unit includes a placement box 5, an adjustment disc 6, a small bevel gear 7 and a compression block 8; the placement box 5 is arranged in the placement groove 310, and the adjustment The disk 6 is set inside the placement groove 310, the upper end of the adjustment disk 6 is provided with an Archimedes spiral groove 610, the lower end of the adjustment disk 6 is provided with a large bevel gear 620, and a plurality of small bevel gears 7 are rotated and installed and run through the bottom of the placement box 5. On the outer wall, the small bevel gear 7 and the large bevel gear 620 mesh with each other. The upper end of the adjustment disc 6 is provided with three compression blocks 8, and the lower end of any compression block 8 is provided with multiple arcs that cooperate with the Archimedes spiral groove 610. shaped protrusion 830, any pressing block 8 is connected with a f...

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Abstract

The invention discloses a split-type cone drill bit, belongs to the technical field of geological drilling devices, and aims at solving the problems of the integrated connection of cone legs and coneseat of the cone drill bit, heavy integrated weight of a cone, high labor intensity of a worker when a single cone is replaced, and the inconvenient replacement of the cone. The cone drill bit comprises a cone seat, the upper ends of the cone seat is provided with three cone legs which are annularly distributed, and cones are rotatably connected with any cone leg; the cone legs are slidably connected with the cone seat, a placing groove is formed in the middle of the cone seat, first inner threads are arranged on the inner wall of the lower end of the placing groove, pressing units which are used for tightly pressing the cone legs are arranged in the middle of the cone seat, and connecting ends which are mutually matched to the first inner threads are connected with the lower ends of the pressing units.

Description

technical field [0001] The invention relates to the technical field of geological drilling devices, and more specifically relates to a split roller cone bit. Background technique [0002] In oil drilling, the most widely used drill bit that can adapt to various formations so far is the roller cone bit. The most widely used roller cone bit is the tricone bit, which is widely used in oil, natural gas drilling and other geological drilling. [0003] Under the action of the drill pressure and the rotation of the drill string, the teeth of the three-cone bit are crushed and eaten into the rock, and at the same time, a certain amount of sliding is generated to shear the rock. When the cone rolls at the bottom of the well, the teeth on the cone impact and press into the formation in turn. This action can crush a part of the rock at the bottom of the well, and at the same time, the shearing action caused by the sliding of the cone cuts off the remaining remaining between the teeth....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/12E21B10/16E21B10/18E21B10/20E21B10/25
CPCE21B10/12E21B10/16E21B10/18E21B10/20E21B10/25
Inventor 张占奎
Owner CANGZHOU GREAT DRILL
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