CN210239594U - Combined directional drill - Google Patents
Combined directional drill Download PDFInfo
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- CN210239594U CN210239594U CN201920915100.5U CN201920915100U CN210239594U CN 210239594 U CN210239594 U CN 210239594U CN 201920915100 U CN201920915100 U CN 201920915100U CN 210239594 U CN210239594 U CN 210239594U
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- tricone
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Abstract
The utility model discloses a combined directional drill, which comprises an annular drill bit, a tricone bit, a steel body and a crossover sub; the annular drill bit is sleeved on the periphery of the steel body; the annular drill bit comprises an outer pipe and PDC oil pieces; the tricone bit is arranged in the outer tube, and a bit main body of the tricone bit is arranged in the mounting groove of the head of the steel body; the adapter is connected with the tail of the steel body. The utility model discloses combination directional drilling, drilling path precision is high, guarantees the drilling precision, reduces the slope, long service life, convenient maintenance.
Description
Technical Field
The utility model belongs to the technical field of the drilling equipment technique and specifically relates to a combination directional drill is related to.
Background
The traditional directional drilling machine for construction uses a roller bit or other drilling tools for perforation, so that the precision of an inlet hole and an outlet hole can be ensured, and the path can not be ensured to run in a straight line.
The patent of publication number CN203463013U discloses a tricone bit, which comprises a bit body and a bit leg installed on the bit body, wherein a bit cone is installed on the bit leg, an oil storage compensation pressure balance system is installed on the back of the bit leg, a central water hole is arranged in the middle of the bit body, and a replaceable alloy nozzle is installed at one end of the central water hole, which is close to the bit cone. At present, middle distortion or arc lines are often generated in the actual construction process; the risk of twisting off of the drill rod is increased during reaming, and the precision of a drilling path cannot be guaranteed.
Foreign directional drilling equipment, such as German RVDS, uses built-in power to push palm pieces on a drill rod, changes the direction of the front end of the drill rod and further realizes the accuracy of an inlet hole and an outlet hole; the scheme inevitably generates the change of the path in the advancing process, so that the precision of the drilling path cannot be really guaranteed, the cost is very high, only renting and not selling are carried out, and the use cost and the risk of a user are greatly improved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at prior art's not enough, provide a combination directional drill, drilling path precision is high, guarantees the drilling precision, reduces the slope, long service life, convenient maintenance.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a combined directional drill comprises an annular drill bit, a tricone drill bit, a steel body and a crossover sub; the annular drill bit is sleeved on the periphery of the steel body; the annular drill bit comprises an outer pipe and PDC oil pieces; the tricone bit is arranged in the outer tube, and a bit main body of the tricone bit is arranged in the mounting groove of the head of the steel body; the adapter is connected with the tail of the steel body.
Furthermore, a first through hole is formed in the central axis of the steel body, and a second through hole is formed in the central axis of the adapter; the first through hole and the second through hole are communicated with a central liquid hole of the tricone bit.
Furthermore, the annular bit is in threaded connection with the periphery of the steel body, the tricone bit is installed in the installation groove in the head of the steel body through threads, and the adapter is in threaded connection with the tail of the steel body.
The utility model has the advantages that:
the combined directional drill of the utility model combines the annular drill bit and the tricone bit, has high precision of the drilling path, avoids the direct contact of the spherical surface of the leg of the tricone bit with the fracture zone to generate slippage, and further influences the inclination and the drilling precision; the combined directional drill has low manufacturing cost, long service life and convenient maintenance, and can effectively protect the drill rod from being twisted off; the utility model discloses combination directional drill is once only fixed a position through annular drill bit, guarantees the drilling precision, reduces the slope.
The utility model discloses directional brill application scope of combination is extensive, and accessible crossover sub and drilling rod are connected in oil-well rig, water well rig, and the drilling rig is dug soon to the tricone machine rig, and the raise boring machine is on the drilling machine power heads such as shale gas-drilling rig. When a power head of the drilling machine provides axial pressure and rotary torque force for the combined directional drill, the annular drill bit of the combined directional drill cuts into different rock stratums through PDC petroleum sheets to stabilize the drilling direction; the tricone bit is followed closely, extrudes the breakage to the rock in the ring bit, and the rock debris after the breakage is blown out by medium such as pressure wind, water or mud, discharges through the slag hole of tricone bit.
Drawings
FIG. 1 is a front view of the combined directional drill of the present invention;
fig. 2 is a left view of the combined directional drill of the present invention.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
Example 1
A combined directional drill comprises a ring bit 1, a tricone bit 2, a steel body 3 and a crossover sub 4. The annular drill bit 1 is sleeved on the periphery of the steel body 3; the ring bit 1 comprises an outer pipe 11 and PDC oil pieces 12; the tricone bit 2 is arranged in the outer tube 11, and a bit main body 21 of the tricone bit 2 is arranged in an installation groove 32 at the head of the steel body 3; the conversion joint 4 is connected with the tail part of the steel body 3.
Example 2
The present embodiment is different from embodiment 1 in that: a first through hole 31 is formed in the central axis of the steel body 3, and a second through hole 41 is formed in the central axis of the adapter 4; the first through hole 31 and the second through hole 41 are communicated with a central liquid hole of the tricone bit 2.
Example 3
The present embodiment is different from embodiment 1 in that: the annular drill bit 1 is in threaded connection with the periphery of the steel body 3, the tricone drill bit 2 is installed in the installation groove 32 at the head of the steel body 3 through threads, and the adapter 4 is in threaded connection with the tail of the steel body 3.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (3)
1. A combination directional drill, its characterized in that: comprises a ring bit, a tricone bit, a steel body and a crossover sub; the annular drill bit is sleeved on the periphery of the steel body; the annular drill bit comprises an outer pipe and PDC oil pieces; the tricone bit is arranged in the outer tube, and a bit main body of the tricone bit is arranged in the mounting groove of the head of the steel body; the adapter is connected with the tail of the steel body.
2. The combination directional drill of claim 1, wherein: a first through hole is formed in the central axis of the steel body, and a second through hole is formed in the central axis of the adapter; the first through hole and the second through hole are communicated with a central liquid hole of the tricone bit.
3. A combination directional drill according to claim 1 or 2, wherein: the annular drill bit is in threaded connection with the periphery of the steel body, the tricone drill bit is installed in the installation groove in the head of the steel body through threads, and the adapter is in threaded connection with the tail of the steel body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920915100.5U CN210239594U (en) | 2019-06-18 | 2019-06-18 | Combined directional drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920915100.5U CN210239594U (en) | 2019-06-18 | 2019-06-18 | Combined directional drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210239594U true CN210239594U (en) | 2020-04-03 |
Family
ID=69986346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920915100.5U Active CN210239594U (en) | 2019-06-18 | 2019-06-18 | Combined directional drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210239594U (en) |
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2019
- 2019-06-18 CN CN201920915100.5U patent/CN210239594U/en active Active
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