CN212774176U - Spiral drill collar with draw-in groove gauge protection structure - Google Patents
Spiral drill collar with draw-in groove gauge protection structure Download PDFInfo
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- CN212774176U CN212774176U CN202020899405.4U CN202020899405U CN212774176U CN 212774176 U CN212774176 U CN 212774176U CN 202020899405 U CN202020899405 U CN 202020899405U CN 212774176 U CN212774176 U CN 212774176U
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- drill collar
- hard alloy
- alloy particles
- spiral drill
- tungsten carbide
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Abstract
A spiral drill collar with a hanging slot diameter-keeping structure comprises a spiral drill collar body, wherein a hanging slot is formed in the spiral drill collar body, a plurality of circles of high-wear-resistance tungsten carbide hard alloy particles are embedded above steps of the hanging slot, and a hanging slot diameter-keeping layer is formed by the plurality of tungsten carbide hard alloy particles. The utility model discloses constitute draw-in groove gauge protection layer by several carbide granule, gauge protection layer has good wearability. In addition, the hanger groove gauge protection layer formed by hard alloy particles has good formability, the layer height is easy to control, and grinding damage to the petroleum casing can be avoided. The utility model overcomes a great deal of shortcoming of the wear-resisting area of coating welding in the past, prolonged the life of spiral drill collar, practiced thrift the drilling cost.
Description
Technical Field
The utility model relates to a drilling tool, especially have spiral drill collar of draw-in groove gauge protection structure.
Background
The spiral drill collar is a downhole drilling tool commonly used for oil drilling and is a main component of an oil drilling drill string, and the currently implemented standard of the spiral drill collar is SY/T5144-2013 drill collar. The spiral drill collar has an anti-sticking function, the hanging slot is processed on the drill collar so as to facilitate the operation of pulling out or putting down the drill collar, the diameter-protecting structure of the hanging slot has the effect of protecting the outer diameter of the step of the hanging slot, and the abrasion of the outer diameter of the step of the hanging slot directly influences the service life of the drill collar. The prior art adopts the wear-resisting area of coating welding to implement the protection to draw-in groove step external diameter, and the problem that this kind of commonly used structure exists is: 1. the service life is short, and the wear resistance is not satisfactory; 2. the wear-resistant belt has poor forming performance and is not easy to control in shape; 3. the thickness of the wear-resistant belt is generally about 3mm, and the hidden danger of grinding damage to the underground casing exists; 4. the wear-resistant belt has high welding temperature, damages the metallographic structure of the drill collar material, and is easy to cause the rejection of the drill collar due to the fact that mud penetrates through the drill collar body; 5. the requirement on the condition of the coating welding process is high, the control of the bonding quality of the wear-resistant belt and the drill collar body is difficult, the wear-resistant belt is good and bad, and the phenomenon that the wear-resistant belt falls off frequently occurs on site.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's drawback, provide a long service life, the good spiral drill collar that has draw-in groove gauge protection structure of gauge protection takes shape.
The problem of the utility model is solved by the following technical scheme:
a spiral drill collar with a hanging slot diameter-keeping structure comprises a spiral drill collar body, wherein a hanging slot is formed in the spiral drill collar body, a plurality of circles of high-wear-resistance tungsten carbide hard alloy particles are embedded above steps of the hanging slot, and a hanging slot diameter-keeping layer is formed by the plurality of tungsten carbide hard alloy particles.
According to the spiral drill collar with the hanging slot gauge-protection structure, the tungsten carbide hard alloy particles are cylindrical, the depth of the tungsten carbide hard alloy particles embedded into the drill collar body is 5-7 mm, and the tungsten carbide hard alloy particles are 0.7-1.2 mm higher than the outer surface of the drill collar body.
In the spiral drill collar with the hanger groove gauge-protecting structure, the distance between the hanger groove gauge-protecting layer and the upper edge of the hanger groove is 15-25 mm, and the axial length H of the hanger groove gauge-protecting layer is 50-110 mm.
According to the spiral drill collar with the hanging slot gauge protection structure, the tungsten carbide hard alloy particles are distributed at least for three circles, and the tungsten carbide hard alloy particles in adjacent circles are distributed in a staggered mode.
The diameter of the tungsten carbide hard alloy particles of the spiral drill collar with the hanger groove diameter-protecting structure is 7-10 mm.
The utility model discloses to the problem of solving spiral drill collar draw-in groove gauge protection and carried out the improved design, inlay the tungsten carbide granule of several rings of high wearability above drill collar draw-in groove step, constitute draw-in groove gauge protection layer by several carbide granule, the gauge protection layer has good wearability. In addition, the hanger groove gauge protection layer formed by hard alloy particles has good formability, the layer height is easy to control, and grinding damage to the petroleum casing can be avoided. The utility model overcomes a great deal of shortcoming of the wear-resisting area of coating welding in the past, prolonged the life of spiral drill collar, practiced thrift the drilling cost.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic illustration of tungsten carbide cemented carbide particles embedded in a drill collar body.
The reference numbers in the figures are: 1. the drill collar comprises a spiral drill collar body, 2 a hanging slot gauge protection layer, 3 tungsten carbide hard alloy particles and 4 a hanging slot.
Detailed Description
Referring to fig. 1 and 2, the present invention includes a spiral drill collar body 1, and a hanging slot 4 is provided on the upper portion of the spiral drill collar body. The hanger groove gage structure is a hanger groove gage layer 2 composed of several rings of high-wear-resistance tungsten carbide hard alloy particles 3 inlaid above the hanger groove steps. The tungsten carbide hard alloy particles are cylindrical, the size and the embedding depth of the tungsten carbide hard alloy particles are correspondingly changed along with the different specifications of the spiral drill collar body, and the larger the specification of the spiral drill collar body is, the larger the size and the embedding depth of the tungsten carbide hard alloy particles are correspondingly increased. Usually, the depth of tungsten carbide hard alloy particles embedded into the bolt drill collar body is 5-7 mm, and the tungsten carbide hard alloy particles are 0.7-1.2 mm higher than the outer surface of the drill collar body. The diameter of the tungsten carbide hard alloy particles is 7-10 mm. The distance between the diameter-protecting layer of the elevator slot and the upper edge of the elevator slot is 15-25 mm, and the axial length H of the diameter-protecting layer of the elevator slot is 50-110 mm. The tungsten carbide hard alloy particles are distributed at least three circles, and the tungsten carbide hard alloy particles of adjacent circles are distributed in a staggered mode.
In the embodiment shown in fig. 1, the diameter of the spiral drill collar body is phi 241.3mm, the diameter of the tungsten carbide hard alloy particles is 10 mm, the height of the tungsten carbide hard alloy particles is 8 mm, and the depth of the tungsten carbide hard alloy particles embedded into the spiral drill collar body is 7 mm. The tungsten carbide hard alloy particles are distributed for four circles. When the diameter-protecting layer of the hanging slot is manufactured, a hole is drilled in the spiral drill collar body, and then tungsten carbide hard alloy particles are embedded in the hole. The gauge protection layer made of the tungsten carbide hard alloy particles has high wear resistance and good formability, and the layer height is easy to control.
Claims (5)
1. The utility model provides a spiral drill collar with draw-in groove gauge protection structure, includes spiral drill collar body (1), is equipped with draw-in groove (4) on spiral drill collar body, its characterized in that: and a plurality of circles of tungsten carbide hard alloy particles (3) with high wear resistance are embedded above the step of the hanging slot, and the hanging slot diameter-protecting layer (2) is formed by a plurality of tungsten carbide hard alloy particles.
2. The spiral drill collar with a hanger groove gage structure as defined in claim 1, wherein: the tungsten carbide hard alloy particles are cylindrical, the depth of the tungsten carbide hard alloy particles embedded into the drill collar body is 5-7 mm, and the tungsten carbide hard alloy particles are 0.7-1.2 mm higher than the outer surface of the drill collar body.
3. The spiral drill collar with a hanger groove gage structure as defined in claim 2, wherein: the distance between the diameter-protecting layer of the elevator slot and the upper edge of the elevator slot is 15-25 mm, and the axial length H of the diameter-protecting layer of the elevator slot is 50-110 mm.
4. The spiral drill collar with a hanger groove gage structure as defined in claim 3 wherein: the tungsten carbide hard alloy particles are distributed at least three circles, and the tungsten carbide hard alloy particles of adjacent circles are distributed in a staggered mode.
5. The spiral drill collar with a hanger groove gage structure as defined in claim 4, wherein: the diameter of the tungsten carbide hard alloy particles is 7-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020899405.4U CN212774176U (en) | 2020-05-26 | 2020-05-26 | Spiral drill collar with draw-in groove gauge protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020899405.4U CN212774176U (en) | 2020-05-26 | 2020-05-26 | Spiral drill collar with draw-in groove gauge protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212774176U true CN212774176U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020899405.4U Active CN212774176U (en) | 2020-05-26 | 2020-05-26 | Spiral drill collar with draw-in groove gauge protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212774176U (en) |
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2020
- 2020-05-26 CN CN202020899405.4U patent/CN212774176U/en active Active
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