Unlock instant, AI-driven research and patent intelligence for your innovation.

A special-shaped pdc cutter bit

A cutting tooth and special-shaped technology, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of poor impact resistance, poor impact resistance of cutting teeth, easy to break, etc., so as to reduce the phenomenon of mud bag and improve drilling efficiency. Effect

Active Publication Date: 2016-03-02
莱州市原野科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is determined that the PDC bit is not suitable for drilling into strata with higher hardness; (2) Poor impact resistance
Since the sharp cutting edge (that is, the polycrystalline diamond layer) bears most of the drilling pressure of the cutting tooth, and the polycrystalline diamond layer is relatively brittle, the edge part of the cutting tooth is easily broken when it encounters an impact load, so the cutting tooth The impact resistance is relatively poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A special-shaped pdc cutter bit
  • A special-shaped pdc cutter bit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 The shown special-shaped PDC cutting tooth of the special-shaped PDC cutting tooth drill bit of the present invention includes a matrix 1 and a diamond composite layer 2, wherein the diamond composite layer 2 is composed of at least two curved surfaces that are not on the same plane.

[0023] More specifically, the diamond composite layer 2 is a circular truncated body, the substrate 1 is a cylinder, the diameter of the bottom surface of the circular truncated cylinder is the same as that of the cylinder, and the diamond composite layer 2 is connected to the diamond composite layer 1. together.

[0024]More specifically, the diamond composite layer 2 includes a top surface 3, a front side 4, a rear side 5, a rear side 2 6, a rear groove surface 7, a side groove surface 8, and a bottom surface 11. The contour of the top surface 3 The line constitutes the cutting profile 10, the part of the cutting profile 10 in contact with the rock constitutes the main...

Embodiment 2

[0037] According to the description of the first embodiment above, those skilled in the art can understand that for the shape design of the cutting teeth of the special-shaped PDC cutting tooth drill bit, it can also be applicable to other drill bit cutting teeth, such as cemented carbide teeth. At this time, the base body 1 and The diamond composite layers 2 are all made of the same cemented carbide material, and their structural parameters are the same as those of this embodiment. Those skilled in the art can fully understand its technical features based on the above description, so details are not repeated here.

[0038] Finally, those skilled in the art can understand that in the development of PDC materials, the specifications and sizes are getting larger and larger, the thickness of the polycrystalline diamond layer is increasing, the overall thickness of PDC is increasing, and the shape and structure are diversified. Those skilled in the art know that PDC products in the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a special-shaped PDC (polycrystalline diamond compact) cutting tooth drill bit. The special-shaped PDC cutting tooth drill bit comprises a PDC cutting tooth, wherein the cutting tooth comprises a base body and a diamond compact layer; the diamond compact layer at least consists of two curve surfaces which are not on the same plane. According to the special-shaped PDC cutting gear drill bit provided by the invention, the drilling efficiency of the PDC drill bit in a complex stratum is improved, and the occurrence of a bit balling phenomenon is reduced.

Description

technical field [0001] The present invention relates to the field of oil and gas drilling tools, and further relates to polycrystalline diamond compact drill bits (hereinafter referred to as PDC bits) widely used in oil and gas drilling operations. More specifically, the present invention relates to a PDC bit as a drill bit cutting unit Polycrystalline diamond compact cutting teeth (hereinafter referred to as PDC cutting teeth). Background technique [0002] The PDC bit is mainly composed of a bit body, cutting teeth and joints. According to the material, the drill body can be generally divided into two types: matrix drill bit and steel body drill bit, and the drill bit is divided into matrix drill bit and steel body drill bit accordingly. The bit body of the matrix drill bit is made of tungsten carbide powder with different particle sizes and impregnated metal materials in different proportions, which are put into the designed graphite mold and sintered at high temperature...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/46
CPCE21B10/46
Inventor 景蕊平李长权景真赵翔
Owner 莱州市原野科技有限公司