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A kind of drill matrix material and preparation method thereof

A matrix material and drill bit technology, applied in the field of powder metallurgy, can solve problems such as economic losses, increased drilling costs, and matrix impact on drilling speed, etc., and achieve the effects of increased drilling life, improved strength and impact toughness

Active Publication Date: 2021-06-11
GUANGDONG INST OF MATERIALS & PROCESSING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems such as carcass shedding, broken blades, center grinding, and cracks will seriously affect the drilling speed, increase drilling costs, and cause great economic losses

Method used

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  • A kind of drill matrix material and preparation method thereof
  • A kind of drill matrix material and preparation method thereof

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Effect test

preparation example Construction

[0037] Embodiments of the present invention also provide a method of preparing a drill carcass material comprising:

[0038] The tungsten carbide rigid particles, nickel powder is mixed with tungsten fibers, and the mold is mixed, and the copper alloy is melted at high temperatures. The method prepared by the method is high and the impact toughness is high and the service life is long.

[0039] It should be noted that the temperature of the fusion is below 1200 ° C, and the holding time is at least 1 h after fusion. The fuse is carried out in a vacuum sintering furnace, and the vacuum sintered furnace is lower than 5Pa.

Embodiment 1

[0043] This embodiment provides a drill carcass material, which is prepared by the following method:

[0044] S1: Select tungsten fibers having a diameter of 50 μm, a long diameter ratio of 30, and the tungsten fibrous grain sheet layer has a thickness of 1 to 5 μm, and the crystal grain length is shorter than 2 to 5;

[0045] S2: Weigh a spherical cast tungsten carbide powder, 15.0% nickel powder and 10.0% tungsten fiber;

[0046] S3: Spherical cast tungsten carbide powder, nickel powder and tungsten fibers are mixed and uniformly loaded into preparatory molds, vibrate, then placed a certain weight of Cu-Zn-Mn-Ni alloy on the powder to make the original component tungsten in the original component The volume fraction of the fibers is 5.8%;

[0047]S4: Place the mold with the powder and copper alloy in a high vacuum sintering furnace, the vacuum is lower than 5 Pa, heated to 1150 ° C after holding 1 h, and the sample is cooled to room temperature after the incubation is completed....

Embodiment 2

[0049] This embodiment provides a drill carcass material, which is prepared by the following method:

[0050] S1: The tungsten fibers having a diameter of 100 μm, the length diameter ratio of 15 are selected, and the tungsten fibrous grain sheet layer has a thickness of 1 to 5 μm, and the crystal grain length is shorter than 2 to 5;

[0051] S2: Weigh a spherical cast tungsten carbide powder, 15.0% nickel powder and 5.0% tungsten fiber;

[0052] S3: Spherical cast tungsten carbide powder, nickel powder and tungsten fibers are mixed and uniformly loaded into preparatory molds, vibrate, then placed a certain weight of Cu-Zn-Mn-Ni alloy on the powder to make the original component tungsten in the original component The volume fraction of the fibers is 2.9%;

[0053] S4: Place the mold with the powder and copper alloy in a high vacuum sintering furnace, the vacuum is lower than 5 Pa, heated to 1150 ° C after holding 1 h, and the sample is cooled to room temperature after the incubatio...

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Abstract

The invention discloses a drill matrix material and a preparation method thereof, and relates to the technical field of powder metallurgy. The drill bit matrix material can be used for oil and gas exploration PDC drill bits. The drill body material is prepared from the following raw materials: tungsten carbide hard particles, tungsten fibers, nickel powder and copper alloy; wherein, the volume percentage of the tungsten fibers is 3-10%. By adding tungsten fibers to the drill bit matrix material, the strength and impact toughness of the drill bit matrix are significantly improved, so that the drilling life of the drill bit using the drill bit matrix material in medium-soft formations is greatly improved. The preparation method of the drill matrix material is as follows: mixing tungsten carbide hard particles, nickel powder and tungsten fiber, then molding and vibrating; and then infiltrating copper alloy at high temperature to obtain the above drill matrix material. The drill matrix material prepared by the method has high strength and impact toughness and long service life.

Description

Technical field [0001] The present invention relates to the field of powder metallurgy, and in particular, to a drill carcass material and a preparation method thereof. Background technique [0002] PDC (polycrystalline diamond composite film) The carcass drill bit is more and more in oil and gas exploration. The PDC drill includes a PDC cutting teeth and a carcass, and the PDC cutting tooth brazed on the carcass. The action of the carcass is to secure the PDC cutting teeth and connect to the drill bore, which is the key to the quality of the drill bit, and is critical to the overall drilling efficiency of the drill bit, service life, drilling cycle and cost. The carcass accounts for more than 40% of the entire PDC drill bit, one of the core technologies of the entire PDC drill bit, and the quality of the carcass directly determines the performance of the entire PDC drill bit. The fall of the carcass, broken blade, abrasive, cracking, etc. will seriously affect the speed of drill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C49/02C22C49/14C22C47/14C22C111/02
CPCC22C47/14C22C49/02C22C49/14
Inventor 胡可谢焕文刘辛
Owner GUANGDONG INST OF MATERIALS & PROCESSING
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