Braze welding nickel base impregnated diamond bit for deep part solid rock drilling, and manufacturing method of braze welding nickel base impregnated diamond bit

A diamond-impregnated and diamond-impregnated technology, which is applied in the field of brazed nickel-based diamond-impregnated drill bits and its manufacture, and the field of brazed nickel-based diamond-impregnated drill bits for deep hard rock drilling and its manufacture, which can solve the problem of low penetration rate of drill bits , Hinder the development of wireline coring drilling technology, short life and other problems, to achieve the effect of reducing the cost of the drill bit, prolonging the life of the drill bit, and improving the ability

Inactive Publication Date: 2014-05-21
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, the existing diamond bits are difficult to meet the needs of deep hole drilling, and the new rock fragmentation characteristics under deep hole conditions make the drilling rate low and the life of the bit is short, which seriously hinders the development of wireline core drilling technology. It is necessary to study the impregnated diamond bit for deep hole wireline coring

Method used

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  • Braze welding nickel base impregnated diamond bit for deep part solid rock drilling, and manufacturing method of braze welding nickel base impregnated diamond bit
  • Braze welding nickel base impregnated diamond bit for deep part solid rock drilling, and manufacturing method of braze welding nickel base impregnated diamond bit

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Select the drill bit size according to the actual drilling design, select the matrix formula, drill bit structure and diamond parameters according to the engineering geological lithology characteristics, and perform charging calculations, weighing, mixing, cold pressing, reduction, steel body alignment and die loading, vacuum-free Pressure sintering, heat preservation, cooling with furnace, machining, inspection and delivery.

[0056] Taking the quartz porphyry (drillability level 11) as an example for the indoor drilling test, a φ56.5 / 38mm wireline core bit is designed: nickel-based pre-alloyed powder and iron powder are used as the matrix formula, The carcass is inlaid with diamonds and thin iron wires, and the lip of the drill bit is flat-bottomed, as follows:

[0057] 1. Nickel-based carcass components (mass percentage): select 70% of nickel-chromium-boron-silicon solder produced by a certain company, 30% of iron powder, and a particle size of 200 mesh;

[0058] 2....

Embodiment 2

[0072] A field production test drill 1 of φ75.5 / 55mm was produced.

[0073] The production method of the φ75.5 / 55mm field production test drill bit 1 is basically the same as that of the indoor test drill bit, except that the diamond concentration and iron powder content are slightly different. The diamond concentration and matrix of the drill bit are designed based on the rock samples of the drilled section on site. Hardness, the diamond concentration is 80%, the iron powder content is 25%, the matrix hardness is HRC35, the diameter of the thin iron wire is 1.6mm, and the cross-sectional area of ​​the thin iron wire accounts for 10% of the bottom lip area of ​​the drill bit.

[0074] The test was carried out at a construction site in Jiangxi, the drilling depth was 2526.16m, and the rock stratum in the drilling section was silicified granite with drillability grade 10-11, with quartz veins in some places.

[0075] Field practice has proved that the timeliness and service life...

Embodiment 3

[0077] A field production test drill 2 of φ75.5 / 55mm was produced.

[0078] The production method of the φ75.5 / 55mm field production test drill bit 2 is basically the same as that of the indoor test drill bit, except that the diamond concentration and iron powder content are slightly different. The diamond concentration and matrix of the drill bit are designed based on the rock samples of the drilled section on site. Hardness, the diamond concentration is 60%, the iron powder content is 35%, the carcass hardness is HRC28, the diameter of the thin iron wire is 1.2mm, and the cross-sectional area of ​​the thin iron wire accounts for 5% of the lip surface area.

[0079] The test was carried out at a construction site in Jiangxi, the drilling depth was 2612.33m, and the drilled rock was quartz porphyry with a drillability level of 11.

[0080] Field practice has proved that the timeliness and service life of brazed nickel-based diamond-impregnated drill bits produced by this techn...

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Abstract

The invention discloses a braze welding nickel base impregnated diamond bit for deep part solid rock drilling, and a manufacturing method of the braze welding nickel base impregnated diamond bit. A braze welding nickel base body mixture of the braze welding nickel base impregnated diamond bit is formed by sintering a nickel base casing, a thin metal wire and diamond, the diamond is impregnated into the sintering nickel base casing, the content of diamond accounts for 30 to 80 percent by volume, and the granularity is 35 / 60 mesh; the sintering nickel base casing comprises the following components in mass percent: 35 to 75 percent of nicochrome powder and 25 to 35 percent of iron powder; the diameter of the thin metal wire is 1.0 to 1.6 mm; a nickel base prealloyed brazing filler metal is used, the performance of a drill bit is improved greatly, the sintering temperature is lowered, and the diamond damage degree is lowered; the content of the iron powder is higher, and the cost of the drill bit is lowered; the thin metal wire is embedded, so that the abrasive resistance of the casing is lowered and diamond exposure and drilling hole deviation preventing are facilitated. The braze welding nickel base impregnated diamond bit provided by the invention is particularly suitable for deep part solid rock drilling, and is also suitable for shallow slippery formation drilling.

Description

technical field [0001] The invention belongs to the technical field of petroleum and geological exploration, and relates to a brazed nickel-based impregnated diamond drill bit and a manufacturing method thereof, in particular to a brazed nickel-based impregnated diamond drill bit for deep hard rock drilling and its manufacture method. Background technique [0002] With the continuous development of existing energy sources such as petroleum and mineral resources, geological prospecting has shifted from shallow and mid-deep areas to deep (below 2000m) and even ultra-deep exploration (4000m). In deep hole drilling, wireline coring has been greatly applied by virtue of the non-lifting coring technology. The longer the life of the drill bit, the faster the drilling efficiency, the less the number and time of tripping and tripping, the lower the labor intensity, and the more obvious the technical and economic benefits of wireline coring. [0003] Under the condition of a certain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/46B23P15/00
Inventor 章文姣孔祥清曲艳东谭松成
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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