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Preparation technology of novel roller bit used in geological and oil industry

A technology of petroleum industry and roller cone bits, applied in the field of roller cone bits and roller cone tower body manufacturing, can solve the problems of high price and few practical applications, and achieve the effect of low price, not easy to fall off, and improving the overall density

Inactive Publication Date: 2013-10-23
吴庆华 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexural strength of these alloys is generally 2000-2300MPa, and the hardness is HRA86-89. The WC powder particle size used is generally 1.5-2.5μm (medium particle size). Only the YG6X brand alloy has a finer WC powder particle size (0.5-1.5 μm), the mechanical properties are better, but because of the higher price, the practical application is less

Method used

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  • Preparation technology of novel roller bit used in geological and oil industry
  • Preparation technology of novel roller bit used in geological and oil industry
  • Preparation technology of novel roller bit used in geological and oil industry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Prepare an exemplary three-axis type φ200mm roller cone bit, the maximum diameter of the cone wheel is φ70mm (see attached image 3 ), the cone angle of the tower wheel is 50°, the cone height is 52mm, and the platform height is 20mm; the number of ball teeth is arranged as 3, 6, and 8; the exposed height of the ball teeth is 9mm; the shaft diameter is φ25mm. It is required to use artificial diamond sandwich ultra-fine-grained carbide buttons with a diameter of φ12mm, a height of 18mm, and a hemispherical tooth top. The hole diameter of the sandwich is φ2.8mm and the depth is 18mm. There is a 3.5mm thick conventional YG8 hard alloy coating on the surface of the cone wheel. The bottom of the cone wheel and the surface of the shaft rod do not need to be covered, but heat treatment is required. Machining, etc. and then self-assembly at the site of use.

[0031] It should be done as follows:

[0032] 1. Preparation of hollow buttons

[0033] a. Weigh 900g of nano WC pow...

Embodiment 2

[0061] Prepare a triaxial Roller cone bit, the largest diameter of the cone wheel (see attached image 3 ); cone angle of tower wheel is 50°; cone height is 52mm; platform height is 20mm; number of ball teeth is arranged as 3, 6, 8; It is required to use artificial diamond sandwich type ultra-fine grain cemented carbide button, its diameter The 18mm high addendum is truncated cone. (The height of the cone top is 6mm, the top of the cone is round )Sandwich hole diameter There is a 4mm thick conventional YG8 hard alloy interlayer on the surface of the tower wheel.

[0062] It should be done in the following steps

[0063] 1. Preparation of hollow buttons

[0064] The following are exactly the same as Example 1-a, 1-b, 1-c, 1-d, 1-e, except that the high-pressure soft mold attached Figure 6 The 6-3 part in is changed to the negative type of the conical truncated, see attached Figure 7 ,, 7-3, other parameters are the same. attached Figure 7 Among them, 7-1 is ...

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Abstract

The invention belongs to the field of a preparation technology of a roller bit in the geological prospecting and oil exploitation industry, and particularly provides a production technology of novel diamond sandwich type ultra-fine grain sintered carbide ball teeth. Artificial diamond grains can be added to the centers of the sintered carbide ball teeth, and therefore machinability and abrasive resistance of the sintered carbide ball teeth are enhanced greatly. According to the preparation technology, the technology that the surface of a cone pulley is completely covered with a sintered carbide layer through the grain melting soaking casting technique is adopted, and therefore all the ball teeth can be reinforced by the sintered carbide layer and connected into a whole. Actually, materials and the overall structure of the roller bit are changed, the stress state of each ball tooth is greatly improved, and grinding force and impact force borne by part of the ball teeth are rapidly buffered and dispersed through the sintered carbide overall shell layer. Finally, the drilling speed of the roller bit can be promoted, the service life of the roller bit is prolonged, and the roller bit can show the excellent characteristics better when used during submarine oil drilling under the harsh conditions.

Description

technical field [0001] The invention belongs to the technical field of drill bit preparation in the geological exploration and oil exploitation industry, and in particular provides a new diamond sandwich type cemented carbide button technology and a cemented carbide full-covering cone tower body manufacturing technology. , and finally prepared into a roller cone bit with high drilling speed and long wear life. Background technique [0002] The history of using roller cone bits in the geological industry and petroleum industry has been nearly 80 years. The drill bits with this structure have played excellent performance in drilling operations in medium and soft formations. broadly used. [0003] The biggest feature of the roller cone drill is that during the drilling process, with the rotation of the drill pipe, the cone wheel rotates, thereby changing the motion state of the button teeth and the rock surface (from sliding cutting to rolling rolling), which can reduce the fr...

Claims

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Application Information

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IPC IPC(8): B23P15/28B22D19/00
Inventor 吴庆华金昕吴庆文
Owner 吴庆华
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