CN203939435U - A kind of band stabilizer drill bit - Google Patents
A kind of band stabilizer drill bit Download PDFInfo
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- CN203939435U CN203939435U CN201420398712.9U CN201420398712U CN203939435U CN 203939435 U CN203939435 U CN 203939435U CN 201420398712 U CN201420398712 U CN 201420398712U CN 203939435 U CN203939435 U CN 203939435U
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- piston
- spring
- lever
- roller bearing
- piston assembly
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Abstract
The utility model discloses a kind of band stabilizer drill bit, mainly in order to natural gas, the fields such as oil drilling, it comprises fittings body (1) and bit body (12), it also comprises piston assembly (3) and stabilizer structure, piston assembly (3) is connected on the inwall of fittings body (1), lever supporting in stabilizer structure (10) lower end axial support is in the groove of bit body (12), lever (5) is fixed by a pin to lever supporting (10) upper end, one end of lever (5) withstands in piston assembly (3), the other end of lever (5) withstands on roller bearing (6), piston body (9) is threaded connection in the sidewall that is fixed on fittings body (1), roller bearing (6) rear end is provided with a roller (8), between roller bearing (6) and piston body (9), be provided with spring B (7).The beneficial effects of the utility model are: it has advantages of that the hole deviation of avoiding, long service life, cost are low.
Description
Technical field
The utility model relates to a kind of band stabilizer drill bit for technical equipment fields such as oil-gas drilling engineering, geological drilling, construction of tunnel, non-excavations.
Background technology
Fast development along with China's drilling engineering, requirement to drill bit is more and more higher, particularly in the hard formation of probing deep-well, ultradeep well, there are many problems, drill bit in the process of creeping into due to and the borehole wall between exist all the time gap, in straight well section, be easy to occur hole deviation; In drilling well, due to the soft or hard degree of geology and the existence of stratigraphic dip, there is the inclination of well, horizontal segment is because drill bit lies low in the borehole wall, and wayward drilling direction has reduced the quality of drilling well.Because the gap between drill bit and the borehole wall exists, drill bit is unsettled state, and vibratory impulse phenomenon very easily occurs, and drill bit can not be crept into stably, causes the destruction in advance of Cutter, the application life of having reduced drill bit.
Utility model content
The purpose of this utility model exists gap for solving in the process of creeping between drill bit and the borehole wall, the hole deviation phenomenon occurring while causing beating straight well and horizontal well, and the improper inefficacy of drill bit that brings of the vibration of drill bit, spy provides the band stabilizer that a kind of efficiency is high, cost is low and drilled well bore quality is high drill bit.
The purpose of this utility model is achieved through the following technical solutions: a kind of band stabilizer drill bit, it comprises fittings body and bit body, between fittings body and bit body, adopt screw thread to be connected, and be fixed by welding, it also comprises piston assembly and stabilizer structure, described piston assembly is connected on the inwall of fittings body, and piston assembly is epicoele and cavity of resorption by fittings body interior separation, piston assembly lower end is connected with a spring C, described spring C lower end is stuck in the groove of bit body inside, described stabilizer structure comprises roller, roller bearing, lever, lever supporting, spring B, piston body, described lever supporting is hollow structure, lever supporting and fittings body lower inner wall are connected, and lever supporting lower end axial support is in the groove of bit body, described lever center is fixed by a pin to lever supporting upper end, one end of lever withstands in piston assembly, the other end of lever withstands on roller bearing front end, described piston body is threaded connection in the sidewall that is fixedly connected on fittings body, described roller bearing rear end is through piston body, and axially offer a through hole in roller bearing rear end, one roller is installed in through hole, there is shoulder described roller bearing outer end and piston body the inner, described spring B is enclosed within on roller bearing, and one end of spring B is against on the shoulder of roller bearing, the other end of spring B withstands in piston body.
Described piston assembly is comprised of one way valve, piston, spring A, spring base, described piston is hollow structure, piston lower end has been threaded connection a spring base, piston upper end is connected with an one way valve, in one way valve, axially offer one and be close to circulation passage, described spring A is stuck between the groove of one way valve and the groove of spring base.
On described spring base upper surface, offer four through holes of circumferential distribution.
One end of described lever withstands on the spring base of piston assembly.
The utlity model has following advantage: drill bit of the present utility model compared with prior art, (1) avoid hole deviation: with stabilizer drill bit in the process of drilling well, can make the roller of drill bit periphery equidistantly stretch out, be close to the borehole wall, drill bit is stably fixed on well center, effectively avoid the generation of hole deviation, improve wellbore quality; (2) extend drilling life of bit: roller is close to after the borehole wall, the vibration producing when being conducive to avoid and subduing drill bit and creep into, avoids cutting teeth to destroy, and improves drilling life of bit, improves drilling efficiency, reduces the number of times that makes a trip, and reduces drilling cost.
Accompanying drawing explanation
Fig. 1 is the structural representation with stabilizer drill bit of the present utility model;
Fig. 2 is piston assembly enlarged drawing of the present utility model;
In figure, 1-fittings body, 2-epicoele, 3-piston assembly, 4-cavity of resorption, 5-lever, 6-roller bearing, 7-spring B, 8-roller, 9-piston body, 10-lever supporting, 11-spring C, 12-bit body, 13-bypass passageways, 14-one way valve, 15-piston, 16-spring A, 17-spring base.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described, protection domain of the present utility model is not limited to the following stated:
As shown in Figure 1, a kind of band stabilizer drill bit, it comprises fittings body 1 and bit body 12, between fittings body 1 and bit body 12, adopt screw thread to be connected, and be fixed by welding, it is characterized in that: it also comprises piston assembly 3 and stabilizer structure, described piston assembly 3 is connected on the inwall of fittings body 1, and piston assembly 3 is epicoele 2 and cavity of resorption 4 by fittings body 1 interior separation, piston assembly 3 lower ends are connected with a spring C11, described spring C11 lower end is stuck in the groove of bit body 12 inside, described stabilizer structure comprises roller 8, roller bearing 6, lever 5, lever supporting 10, spring B 7, piston body 9, described lever supporting 10 is hollow structure, lever supporting 10 is connected with fittings body 1 lower inner wall, and lever supporting 10 lower end axial support are in the groove of bit body 12, described lever 5 centers are fixed by a pin to lever supporting 10 upper ends, one end of lever 5 withstands in piston assembly 3, the other end of lever 5 withstands on roller bearing 6 front ends, described piston body 9 is threaded connection in the sidewall that is fixed on fittings body 1, described roller bearing 6 rear ends are through piston body 9, and axially offer a through hole in roller bearing 6 rear ends, one roller 8 is installed in through hole, there is shoulder described roller bearing 6 outer ends and piston body 9 the inners, described spring B 7 is enclosed within on roller bearing 6, and one end of spring B 7 is against on the shoulder of roller bearing 6, the other end of spring B 7 withstands in piston body 9.
As shown in Figure 2, described piston assembly 3 is comprised of one way valve 14, piston 15, spring A16, spring base 17, described piston 15 is hollow structure, piston 15 lower ends have been threaded connection a spring base 17, piston 15 upper ends are connected with an one way valve 14, one way valve 14 is interior axially to be offered one and is close to circulation passage 13, and described spring A16 is stuck between the groove of one way valve 14 and the groove of spring base 17.On described spring base 17 upper surfaces, offer four through holes of circumferential distribution.One end of described lever 5 withstands on the spring base 17 of piston assembly, and piston assembly 3 is supported in fittings body 1 by lever 5 and spring C11.In the present embodiment, described roller 8, roller bearing 6, lever 5, spring B 7, piston body 9 are at least three, and are circumferentially uniformly distributed, and make like this roller 8 stressed evenly, avoid creeping into the crooked phenomenon of appearance.
The course of work of the present utility model is as follows: while creeping into, because bypass passageways 13 apertures are little, can not discharge in time drilling fluid, drill bit is at epicoele 2 mineralization pressures, under the effect of pressure, piston assembly 3 moves downward, and compressing lever 5 rotates, and promote roller bearing 6 and move radially, thereby roller 8 is contacted with the borehole wall.After roller 8 puts in place, drilling fluid pressure constantly raises, and push one way valve 14 open, at the epicoele 2 of piston assembly 3 and cavity of resorption 4, form basicly stable pressure difference, the thrust that single roller 8 obtains is in formula, to be the effective area of piston assembly 3, pressure difference for piston assembly 3 upper and lower chambeies, for the roller number of drill bit, roller bearing 6 equidistantly stretches out certain displacement amount, makes drill bit all the time in well center.
When rising, during lower brill, drilling liquid pressure disappears, in drill bit, each parts return to initial position under the effect of spring A16 and spring C11, roller 8 is return under the effect of spring B 7, when roller 8 returns to initial position, roller 8 produces gap with the borehole wall, facilitates the rising of drill bit, lower brill, and the cavity in hole annulus and drill bit can be communicated with by the bypass passageways 13 on one way valve 14.
Initialization situation during drilling well:
(1), the pump pressure of drilling fluid is raised to operating pressure gradually since 0.
(2), pressure raises and can be divided into three phases:
A, pressure is, the thrust F that the pressure of this section forms is less than spring A16, spring B 7, the formed spring force of spring C11, that is, now drilling fluid flows to from bypass passageways 13.
B, pressure are, this section is due to the Kong Tai little of bypass passageways 13, pressure is elevated to gradually this stage and acts on making every effort to overcome on piston 15 and take spring B 7 and spring C11 spring force, piston assembly moves down, by lever 5, promote roller bearings 6 and outwards move, but mud pressure now can not promote one way valve 14, open.
C, pressure are that, when roller 8 withstands after the borehole wall, pressure continues to raise, when the thrust of pressure action on one way valve 14 is greater than the power of spring A16, one way valve 14 moves down, and opens gradually one way valve breach, and drilling fluid displacement (flowing through bypass passageways 13 and one way valve breach) increases gradually.When=spring A spring force, now just reached a balance, drilling fluid just can be discharged drill bit smoothly, and drill bit there will not be crookedly, thereby has avoided hole deviation.
Claims (4)
1. be with stabilizer drill bit for one kind, it comprises fittings body (1) and bit body (12), between fittings body (1) and bit body (12), adopt screw thread to be connected, and be fixed by welding, it is characterized in that: it also comprises piston assembly (3) and stabilizer structure, described piston assembly (3) is connected on the inwall of fittings body (1), and piston assembly (3) is epicoele (2) and cavity of resorption (4) by fittings body (1) interior separation, piston assembly (3) lower end is connected with a spring C(11), described spring C(11) lower end is stuck in the inner groove of bit body (12), described stabilizer structure comprises roller (8), roller bearing (6), lever (5), lever supporting (10), spring B (7), piston body (9), described lever supporting (10) is hollow structure, lever supporting (10) is connected with fittings body (1) lower inner wall, and lever supporting (10) lower end axial support is in the groove of bit body (12), described lever (5) center is fixed by a pin to lever supporting (10) upper end, one end of lever (5) withstands in piston assembly (3), the other end of lever (5) withstands on roller bearing (6) front end, described piston body (9) is threaded connection in the sidewall that is fixed on fittings body (1), described roller bearing (6) rear end is through piston body (9), and axially offer a through hole in roller bearing (6) rear end, one roller (8) is installed in through hole, there is shoulder described roller bearing (6) outer end and piston body (9) the inner, described spring B (7) is enclosed within on roller bearing (6), and one end of spring B (7) is against on the shoulder of roller bearing (6), the other end of spring B (7) withstands in piston body (9).
2. a kind of band stabilizer drill bit according to claim 1, it is characterized in that: described piston assembly (3) is by one way valve (14), piston (15), spring A(16), spring base (17) forms, described piston (15) is hollow structure, piston (15) lower end has been threaded connection a spring base (17), piston (15) upper end is connected with an one way valve (14), in one way valve (14), axially offer one and be close to circulation passage (13), described spring A(16) be stuck between the groove of one way valve (14) and the groove of spring base (17).
3. a kind of band stabilizer drill bit according to claim 1, is characterized in that: four through holes that offer circumferential distribution on described spring base (17) upper surface.
4. a kind of band stabilizer drill bit according to claim 1, is characterized in that: one end of described lever (5) withstands on the spring base (17) of piston assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420398712.9U CN203939435U (en) | 2014-07-18 | 2014-07-18 | A kind of band stabilizer drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420398712.9U CN203939435U (en) | 2014-07-18 | 2014-07-18 | A kind of band stabilizer drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939435U true CN203939435U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420398712.9U Active CN203939435U (en) | 2014-07-18 | 2014-07-18 | A kind of band stabilizer drill bit |
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| Country | Link |
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| CN (1) | CN203939435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100206A (en) * | 2014-07-18 | 2014-10-15 | 成都保瑞特钻头有限公司 | Drill bit with stabilizer |
-
2014
- 2014-07-18 CN CN201420398712.9U patent/CN203939435U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100206A (en) * | 2014-07-18 | 2014-10-15 | 成都保瑞特钻头有限公司 | Drill bit with stabilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 611130 Wenjiang District, Chengdu, Sichuan, No. 123, Xingxin Road, Chengdu science and technology development park across the Taiwan Strait. Patentee after: Sichuan Bao Wright drill Co., Ltd. Address before: 611130 Wenjiang District, Chengdu, Sichuan, No. 123, Xingxin Road, Chengdu science and technology development park across the Taiwan Strait. Patentee before: Sino-Canada Chengdu Bright Bits Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 611130 No. 30, West Section of Second Ring Road, Tianyuan Town, Zheyang District, Deyang City, Sichuan Province Patentee after: Sichuan Bao Wright drill Co., Ltd. Address before: 611130 No. 123 Xingxin Road, Chengdu Cross-Strait Science and Technology Industrial Development Park, Wenjiang District, Chengdu City, Sichuan Province Patentee before: Sichuan Bao Wright drill Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |