CN214944002U - Reaming device for petroleum and natural gas drilling - Google Patents
Reaming device for petroleum and natural gas drilling Download PDFInfo
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- CN214944002U CN214944002U CN202121124738.0U CN202121124738U CN214944002U CN 214944002 U CN214944002 U CN 214944002U CN 202121124738 U CN202121124738 U CN 202121124738U CN 214944002 U CN214944002 U CN 214944002U
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- reaming
- tooth
- supporting body
- gas drilling
- petroleum
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Abstract
The utility model provides a reaming device for oil and gas drilling. Relates to the technical field of petroleum and natural gas drilling. The middle part of the body is provided with dovetail groove guide rails which are uniformly distributed on the circumference and incline downwards and outwards, each dovetail groove guide rail is connected with a reaming tooth, the upper part of the reaming tooth is provided with a nut which is in threaded connection with the body, a spring is arranged between the lower part of the reaming tooth and the supporting body, and the supporting body is provided with a flushing hole which is communicated with the outside and the central hole of the supporting body. The utility model discloses following beneficial effect has: through the position of adjusting nut and the supporting action of spring, can make the reaming tooth reciprocate along the dovetail guide rail, change the external diameter of reaming tooth, go into the well through the fixed back reaming effect that goes into of back of the body cap, the external diameter of adjustment reaming tooth adapts to different reaming demands, sets up expansion section and guarantor section and carries out the reaming respectively and the wall of a well is maintained, improves the reaming effect, can dismantle the reaming tooth and change the maintenance alone when the reaming tooth wearing and tearing, has reduced use cost.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil and gas well drilling technique and specifically relates to a reaming device for oil and gas well drilling.
Background art:
with the continuous development of oil and gas resources, people need to drill a channel between the ground and an underground oil and gas layer for better drilling operation, a reaming device is needed to be used for reaming operation while drilling, the reaming device is a tool for reaming while drilling oil well, is different from a reaming drill bit arranged at the lower part of a drill string, is arranged in the middle of the drill string, has a diameter larger than that of the drill bit, and is used for reaming and well wall trimming simultaneously when a lower drill bit drills.
The utility model has the following contents:
in order to solve the problem, the utility model provides a reaming device for oil and gas drilling.
The technical scheme of the utility model is that: the reaming device for petroleum and natural gas drilling comprises a body, wherein the body is in threaded sealing connection with a support body at the lower part, an upper joint is arranged on the upper part of the body, a lower joint is arranged on the lower part of the support body, a central hole is formed in the body and the support body, dovetail groove guide rails which are uniformly distributed on the circumference downwards and outwards incline are arranged in the middle of the body, each dovetail groove guide rail is connected with a reaming tooth, nuts and the body are arranged on the upper parts of the reaming teeth and in threaded connection, springs are arranged between the lower parts of the reaming teeth and the support body, and flushing holes communicated with the outer part of the support body and the central hole are formed in the support body.
The reaming tooth comprises an expansion section at the lower end and a diameter-keeping section at the upper end, a polycrystalline diamond compact is welded on the conical surface of the expansion section, and a wear-resistant surfacing layer is formed on the outer circle of the diameter-keeping section in a surfacing mode.
The upper side of the nut is provided with a back cap which is connected with the body by screw thread.
The outside of the flushing hole is provided with a one-way valve.
The utility model discloses following beneficial effect has: through the position of adjusting nut and the supporting action of spring, can make the reaming tooth reciprocate along the dovetail guide rail, change the external diameter of reaming tooth, go into the well through the fixed back reaming effect that goes into of back of the body cap, the external diameter of adjustment reaming tooth adapts to different reaming demands, sets up expansion section and guarantor section and carries out the reaming respectively and the wall of a well is maintained, improves the reaming effect, can dismantle the reaming tooth and change the maintenance alone when the reaming tooth wearing and tearing, has reduced use cost.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1-a body, 2-a support body, 3-a dovetail groove guide rail, 4-reaming teeth, 5-a spring, 6-a flushing hole, 7-an expansion section, 8-a diameter-keeping section, 9-a polycrystalline diamond compact, 10-a wear-resistant surfacing layer, 11-a nut, 12-a back cap, 13-a one-way valve and 14-a central hole.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown in figure 1, the reaming device for petroleum and natural gas drilling comprises a body 1, the lower portion of the body 1 is in threaded sealing connection with a supporting body 2, an upper connector is arranged on the upper portion of the body 1, a lower connector is arranged on the lower portion of the supporting body 2, a central hole 14 is formed in the body 1 and the supporting body 2, downward and outward-inclined dovetail groove guide rails 3 which are uniformly distributed on the circumference are arranged in the middle of the body 1, each dovetail groove guide rail 3 is connected with a reaming tooth 4, a nut 11 is arranged on the upper portion of each reaming tooth 4 and is in threaded connection with the body 1, a spring 5 is arranged between the lower portion of each reaming tooth 4 and the supporting body 2, and a flushing hole 6 is formed in the supporting body 2 and is communicated with the outer portion of the supporting body 2 and the central hole 14.
The reaming tooth 4 comprises an expansion section 7 at the lower end and a diameter-protecting section 8 at the upper end, a polycrystalline diamond composite sheet 9 is welded on the conical surface of the expansion section 7 to serve as a tunneling tooth, a wear-resistant surfacing layer 10 is surfacing-welded on the excircle of the diameter-protecting section 8 to play a role in protecting the diameter and resisting the wear, and after the wear-resistant surfacing layer is worn, surfacing can be performed, and the reaming tooth can be continuously used after being polished.
The upper side of the nut 11 is provided with a back cap 12 which is in threaded connection with the body 1, so that the change of the outer diameter of the reaming teeth 4 caused by the looseness of the nut 11 is prevented.
The outside of the flushing hole 6 is provided with a one-way valve 13 to prevent external mud from entering the inside of the drill rod.
Through the position of adjusting nut and the supporting action of spring, can make the reaming tooth reciprocate along the dovetail guide rail, change the external diameter of reaming tooth, go into the well through the fixed back reaming effect that goes into of back of the body cap, the external diameter of adjustment reaming tooth adapts to different reaming demands, sets up expansion section and guarantor section and carries out the reaming respectively and the wall of a well is maintained, improves the reaming effect, can dismantle the reaming tooth and change the maintenance alone when the reaming tooth wearing and tearing, has reduced use cost.
Claims (4)
1. A reaming device for petroleum and natural gas drilling comprises a body (1), and is characterized in that: the supporting body (2) is connected with the lower portion of the body (1) in a threaded sealing mode, an upper joint is arranged on the upper portion of the body (1), a lower joint is arranged on the lower portion of the supporting body (2), a center hole (14) is formed in the body (1) and the supporting body (2), the middle portion of the body (1) is provided with downward dovetail groove guide rails (3) which are evenly distributed on the circumference and inclined outwards, each dovetail groove guide rail (3) is connected with one reaming tooth (4), a nut (11) is arranged on the upper portion of each reaming tooth (4) and connected with the body (1) in a threaded mode, a spring (5) is arranged between the lower portion of each reaming tooth (4) and the supporting body (2), and a flushing hole (6) is formed in the supporting body (2) and communicates with the outer portion of the supporting body (2) and the center hole (14).
2. The reaming device for petroleum and natural gas drilling according to claim 1, wherein: the reaming teeth (4) comprise an expansion section (7) at the lower end and a diameter-protecting section (8) at the upper end, polycrystalline diamond compacts (9) are welded on the conical surface of the expansion section (7), and a wear-resistant surfacing layer (10) is surfacing-welded on the excircle of the diameter-protecting section (8).
3. The reaming device for petroleum and natural gas drilling according to claim 1, wherein: the upper side of the nut (11) is provided with a back cap (12) which is in threaded connection with the body (1).
4. The reaming device for petroleum and natural gas drilling according to claim 1, wherein: a one-way valve (13) is arranged outside the flushing hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121124738.0U CN214944002U (en) | 2021-05-24 | 2021-05-24 | Reaming device for petroleum and natural gas drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121124738.0U CN214944002U (en) | 2021-05-24 | 2021-05-24 | Reaming device for petroleum and natural gas drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214944002U true CN214944002U (en) | 2021-11-30 |
Family
ID=79059225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121124738.0U Active CN214944002U (en) | 2021-05-24 | 2021-05-24 | Reaming device for petroleum and natural gas drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214944002U (en) |
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2021
- 2021-05-24 CN CN202121124738.0U patent/CN214944002U/en active Active
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