CN209398359U - A kind of drill bit with the lubrication borehole wall - Google Patents

Abstract

The utility model provides a kind of drill bit with the lubrication borehole wall, including drill body, tire, gear wheel and lubrication management, three tires, which are annularly spaced, is connected in drill body side, gear wheel is rotatably connected on tire, three gear wheel axis extended lines and drill body axis coincide with a bit, several gear teeth, which are annularly spaced, to be connected on gear wheel, lubrication management is erected on drill body outer wall, lubrication management includes wellbore pipe and wall casing, wellbore pipe is factory's font pipe, several wellbore pipe one end intervals are connected on drill body side wall, and the wellbore pipe other end is directed toward in wellbore；The advantages of wall casing is straight tube, several wall casing one end intervals are connected on drill body side wall, and the wall casing other end is directed toward the borehole wall, and the utility model has lubrication hole wall, reduces bit wear.

Description

A kind of drill bit with the lubrication borehole wall

Technical field

The utility model relates to oil-well drilling equipment fields, specifically, being related to a kind of drill bit with the lubrication borehole wall.

Background technique

Drill bit is the chief component of drilling equipment, and main function is broken pure rock, forms wellbore；Rotary drilling-head is The drill bit that petroleum industry generally uses at present, rotary drilling-head can generate rotation under mechanical drive, to drive entire drill bit It generates centripetal movement, and cuts by invading, grind and make rock generation slight crack and be crushed, play the role of drilling downwards.

Drill bit is during feeding, and because rock is harder, then drill bit and rock generate greatly friction, and are dry friction, no High heat can only be generated and corrode drill bit, can also increase the wear intensity of drill bit, reduce feeding efficiency, that shortens drill bit uses the longevity Life.

Utility model content

In place of solving above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide one kind to have lubrication well The drill bit of wall, to overcome defect in the prior art.

To achieve the goals above, the utility model provides a kind of drill bit with the lubrication borehole wall, including drill body, wheel Pawl, gear wheel and lubrication management, three tires, which are annularly spaced, is connected in drill body side, and gear wheel is rotatably connected on tire, three teeth Wheel axis extended line and drill body axis coincide with a bit, several gear teeth, which are annularly spaced, to be connected on gear wheel, and lubrication management is erected at On drill body outer wall, lubrication management includes wellbore pipe and wall casing, and wellbore pipe is factory's font pipe, several wellbore pipe one end intervals are connected On drill body side wall, the wellbore pipe other end is directed toward in wellbore；Wall casing is straight tube, several wall casing one end intervals are connected in brill On body sidewall, the wall casing other end is directed toward the borehole wall.

By using above-mentioned technical proposal, when carrying out drilling well work, it is passed through mud in drill body, subsequent mud is from wellbore pipe It is flowed out in wall casing, the mud flowed out from wellbore pipe is sprayed onto shaft bottom, is lubricated mud to shaft bottom, reduces to the gear teeth Abrasion, while the specific heat capacity of mud is big, when gear wheel tip and shaft bottom being made to rub, mud absorbs most heat, and then reduces The heat of gear wheel avoids gear wheel temperature distortion；The mud flowed out from wall casing is sprayed onto the borehole wall, moistens mud to the borehole wall It is sliding, it is further reduced the abrasion to the gear teeth, improves the service life of drill bit.

As the further explanation to the utility model, it is preferable that wellbore pipe and wall casing are located at gear wheel gap location.

By using above-mentioned technical proposal, mud is avoided to be directly sprayed on gear wheel and splash, guarantees that mud can be flowed to smoothly Shaft bottom.

As the further explanation to the utility model, it is preferable that three gear wheel maximum outside diameters are greater than wellbore pipe and the borehole wall The vertical gear wheel axis of maximum outside diameter and gear teeth tooth tip direction of pipe.

By using above-mentioned technical proposal, wellbore pipe and wall casing is avoided to contact with the borehole wall and bend fracture.

As the further explanation to the utility model, it is preferable that drill body is fixed with screwed pipe, screw thread far from gear wheel one end Pipe outside diameter is less than drill body outer diameter and screw thread pipe outer wall offers screw thread.

By using above-mentioned technical proposal, screwed pipe, which is arranged, to be mounted the bit on drilling rod, while being threadedly coupled guarantee Drill bit stable connection.

As the further explanation to the utility model, it is preferable that screwed pipe offers bevel edge far from drill body one end.

By using above-mentioned technical proposal, bevel edge is set and is convenient for for being inserted into drilling rod drill bit, plays the role of guiding.

As the further explanation to the utility model, it is preferable that be fixed in the drill body between gear wheel and lead mud column, lead mud Column be it is round table-like, lead the big one end of mud column outer diameter and drill body and be connected.

By using above-mentioned technical proposal, mud column is led in setting will enter the silt between gear wheel and rubble export gear wheel gap Outside, it avoids silt and rubble from being deposited on gear wheel gap location and be clamped gear wheel, influences drilling well everything goes well with your work to carry out.

The utility model has the following beneficial effects:

1, the utility model is respectively lubricated shaft bottom and the borehole wall by setting wellbore pipe and wall casing, reduces gear teeth mill Damage and high temperature attack, improve the service life of drill bit；

2, drill bit is easily installed by the way that screwed pipe is arranged；

3, leading mud column by setting avoids silt and rubble from being clamped gear wheel.

Detailed description of the invention

Fig. 1 is the bottom view of the utility model；

Fig. 2 is the top view of the utility model.

Description of symbols:

1, drill body；11, slurry pipe；2, tire；3, gear wheel；31, inclined-plane；32, the gear teeth；4, lubrication management；41, wellbore pipe；42, well Wall pipe；5, screwed pipe；51, bevel edge；6, mud column is led.

Specific embodiment

In order to further appreciate that the structure, feature and other purposes of the utility model, now in conjunction with appended preferable implementation Example is accompanied by attached drawing, and detailed description are as follows, this attached drawing embodiment described is merely to illustrate the technical solution of the utility model, and Non-limiting the utility model.

A kind of drill bit with the lubrication borehole wall is bored in conjunction with Fig. 1, Fig. 2, including drill body 1, tire 2, gear wheel 3 and lubrication management 4 Body 1 be it is cylindric, slurry pipe 11 is offered in drill body 1, tire 2 is factory's font steelframe, and annularly interval is connected in brill for three tires 2 The outside of body 1, gear wheel 3 be it is coniform, annularly interval is connected in 1 side of drill body to three tires 2, three gear wheels 3 company of rotation respectively It connects on three tires 2, three 3 axis extended lines of gear wheel and 1 axis of drill body coincide with a bit, offer on gear wheel 3 several oblique Face 31, several gear teeth 32 are annularly spaced and are connected on inclined-plane 31；Lubrication management 4 is erected on 1 outer wall of drill body, and lubrication management 4 includes Wellbore pipe 41 and wall casing 42, wellbore pipe 41 are factory's font pipe, and three 41 one end intervals of wellbore pipe are connected on 1 side wall of drill body, 41 other end of wellbore pipe is directed toward in wellbore；Wall casing 42 is straight tube, and three 42 one end intervals of wall casing are connected in 1 side wall of drill body On, 42 other end of wall casing is directed toward the borehole wall, and wellbore pipe 41 and wall casing 42 are communicated with slurry pipe 11.

In conjunction with Fig. 1, Fig. 2, when carrying out drilling well work, it is passed through mud in drill body 1, subsequent mud is from wellbore pipe 41 and the borehole wall It is flowed out in pipe 42, the mud flowed out from wellbore pipe 41 is sprayed onto shaft bottom, is lubricated mud to shaft bottom, reduces to the gear teeth 32 Abrasion, while the specific heat capacity of mud is big, when 3 tip of gear wheel and shaft bottom being made to rub, mud absorbs most heat, and then reduces The heat of gear wheel 3 avoids 3 temperature distortion of gear wheel；The mud flowed out from wall casing 42 is sprayed onto the borehole wall, carries out mud to the borehole wall Lubrication, is further reduced the abrasion to the gear teeth 32, improves the service life of drill bit.

In conjunction with Fig. 1, Fig. 2, wellbore pipe 41 and wall casing 42 are located at 3 gap location of gear wheel, and mud is avoided to be directly sprayed on gear wheel 3 And splash, guarantee that mud can smoothly flow to shaft bottom, three 3 maximum outside diameters of gear wheel are greater than wellbore pipe 41 and the maximum of wall casing 42 is outer Vertical 3 axis of gear wheel of diameter and 32 tooth tip direction of the gear teeth, avoids wellbore pipe 41 and wall casing 42 from contacting with the borehole wall and bend fracture.

In conjunction with Fig. 1, Fig. 2, drill body 1 is fixed with screwed pipe 5 far from 3 one end of gear wheel, and 5 outer diameter of screwed pipe is less than 1 outer diameter of drill body And 5 outer wall of screwed pipe offers screw thread, screwed pipe 5 offers bevel edge 51 far from 1 one end of drill body, and setting screwed pipe 5 can will bore Head is installed on drilling rod, while being threadedly coupled and being guaranteed drill bit stable connection, and setting bevel edge 51 is convenient for for being inserted into drilling rod drill bit, Play the role of guiding.

In conjunction with Fig. 1, Fig. 2, be fixed in the drill body 1 between gear wheel 3 and lead mud column 6, lead mud column 6 be it is round table-like, lead outside mud column 6 The big one end of diameter and drill body are connected, and mud column 6 is led in setting will enter outside the silt between gear wheel 3 and rubble export 3 gap of gear wheel, keep away Exempt from silt and rubble is deposited on 3 gap location of gear wheel and is clamped gear wheel 3, influences drilling well everything goes well with your work to carry out.

It is to be understood that above-mentioned utility model content and specific embodiment are intended to prove the provided skill of the utility model The practical application of art scheme should not be construed as the restriction to scope of protection of the utility model.Those skilled in the art are practical at this In novel spirit and principle, when can various modifications may be made, equivalent replacement or improvement.The protection scope of the utility model is with appended power Subject to sharp claim.

Claims (6)

1. a kind of drill bit with the lubrication borehole wall, which is characterized in that including drill body (1), tire (2), gear wheel (3) and lubrication management (4), annularly interval is connected in drill body (1) side to three tires (2), and gear wheel (3) is rotatably connected on tire (2), three teeth Wheel (3) axis extended line and drill body (1) axis coincide with a bit, several gear teeth (32) are annularly spaced and are connected on gear wheel (3), Lubrication management (4) is erected on drill body (1) outer wall, and lubrication management (4) includes wellbore pipe (41) and wall casing (42), and wellbore pipe (41) is Factory's font pipe, several wellbore pipe (41) one end intervals are connected on drill body (1) side wall, and wellbore pipe (41) other end is directed toward wellbore It is interior；Wall casing (42) is straight tube, several wall casing (42) one end intervals are connected on drill body (1) side wall, and wall casing (42) is another It is directed toward the borehole wall in one end.

2. a kind of drill bit with the lubrication borehole wall according to claim 1, which is characterized in that wellbore pipe (41) and wall casing (42) it is located at gear wheel (3) gap location.

3. a kind of drill bit with the lubrication borehole wall according to claim 2, which is characterized in that three gear wheels (3) are maximum outer Diameter is greater than vertical gear wheel (3) axis of maximum outside diameter and the gear teeth (32) tooth tip direction of wellbore pipe (41) and wall casing (42).

4. a kind of drill bit with the lubrication borehole wall according to claim 1, which is characterized in that drill body (1) is far from gear wheel (3) One end is fixed with screwed pipe (5), and screwed pipe (5) outer diameter is less than drill body (1) outer diameter and screwed pipe (5) outer wall offers screw thread.

5. a kind of drill bit with the lubrication borehole wall according to claim 4, which is characterized in that screwed pipe (5) is far from drill body (1) one end offers bevel edge (51).

6. a kind of drill bit with the lubrication borehole wall according to claim 5, which is characterized in that the drill body between gear wheel (3) (1) be fixed in and lead mud column (6), lead mud column (6) be it is round table-like, lead the big one end of mud column (6) outer diameter and drill body (1) and be connected.