CN202215148U - Reciprocating type percussive-rotary drilling tool - Google Patents
Reciprocating type percussive-rotary drilling tool Download PDFInfo
- Publication number
- CN202215148U CN202215148U CN2011203268273U CN201120326827U CN202215148U CN 202215148 U CN202215148 U CN 202215148U CN 2011203268273 U CN2011203268273 U CN 2011203268273U CN 201120326827 U CN201120326827 U CN 201120326827U CN 202215148 U CN202215148 U CN 202215148U
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- drilling
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- percussive
- reciprocating type
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Abstract
The utility model relates to a reciprocating type percussive-rotary drilling tool which is a rotary-percussive drilling tool capable of providing reciprocating percussion and torque simultaneously in the well drilling process. The reciprocating type percussive-rotary drilling tool can improve drilling efficiency and mechanical drilling speed and reduce drilling cost. The technical scheme is as follows: an upper joint is internally provided with a flow controller, and an automatic valve device below the upper joint is connected with an inner hole of the upper joint through threads; a containing cavity with changeable volume is formed by the automatic valve device, a shell and the upper end face of a core shaft; a fluid channel is arranged in the middle of the core shaft, a sealing piece is arranged between the outer wall at the upper end of the core shaft and the inner wall of the shell, and the threads at the lower part of the core shaft is used for being connected with a drill; and a rotary device is provided with a spiral chute, a cylinder of the rotary device is arranged on the core shaft along with a moving piece, and the bottom of the rotary device is provided with a unidirectional lower pawl surface that is matched with a unidirectional upper pawl surface at the upper part of a load-bearing joint. The reciprocating type percussive-rotary drilling tool has a simple structure, is suitable for well maintaining and well drilling operation, can provide torque and percussive energy simultaneously, reduces the stick-slip phenomenon of the drill, rises the mechanical drilling speed, improves the well drilling efficiency and reduces the well drilling cost.
Description
Technical field
The utility model relates to a kind of rotary percussion drill by driving well tool that reciprocal impact and moment of torsion can be provided simultaneously in drilling process, be applicable in oil and gas well drilling engineering and the well workover service, also can be used for the geological prospecting hole and creeps into engineering.
Background technology
At present the drilling tool major part that adopts of oil field can only be single provides axial impact force or circumferential moment of torsion, and for harder stratum or abrasive layer, when drilling tool only provided axial impact force, the depth of tooth penetration of drill bit was not enough, and rate of penetration has much room for improvement; And when drilling tool only provides circumferential moment of torsion, often lack enough moments of torsion to destroy the stratum, thereby drill bit moment is stopped operating; Sticking sliding, bit freezing phenomenon appears; At this moment drill string can tighten as clockwork spring, discharges fast again after moment of torsion gathers, and causes drill string to reverse concussion; Simultaneously also can receive higher shock loading on the drill bit, to having a negative impact in application life of drill bit, drill string matching component.
In order to improve bit speed; Except drilling technologies such as research bit technique, jetting breaking technique for rock; Proposed the rotary percussion drilling technological concept again, its core content is that drilling tool applies circumferential moment of torsion to drill bit when axial impact loading is provided, proves through a large amount of technical research and The field; Rotary percussion drilling can significantly improve the rate of penetration of drilling well, reaches the purpose of fast broken rock.Therefore the utility model provides a kind of drilling tool that reciprocal impact and rotation torque can be provided simultaneously, this instrument is converted into moment of torsion and axial impact loading with the fluid energy of drilling fluid, and directly acts on the drill bit, has improved drilling efficiency greatly.This tool construction is simple, and length is short, has overcome big, stupid, the heavy problem of conventional drilling instrument, is with a wide range of applications.
Summary of the invention
The purpose of the utility model is that reconnoitring the exploitation drilling well for natural petroleum gas field drilling well, non-oil resource provides a kind of reciprocating type percussive-rotary drilling instrument; This instrument has significantly improved drill bit efficiency of breaking rock and drilling machinery drilling speed; And length is short, and is simple in structure, has the wide using value of sending out.
In order to achieve the above object, the technical scheme that the utility model adopted is: a kind of reciprocating type percussive-rotary drilling instrument is made up of flow control valve, top sub, automatic valve device, shell, mandrel, whirligig, load-bearing joint etc.Its architectural feature is: top sub is through being threaded in shell upper, and flow control valve is equipped with in its inside; Automatic valve device is installed in the top sub, automatic valve device by valve stroke calibrating installation, valve rod, valve body, valve head, unload valve spring and constitute, the upper surface of it and shell, mandrel has constituted the variable volume cavity volume jointly; The top major diameter external surface of mandrel cooperates with the internal surface gaps of shell, and seal is arranged between the two; Three helicla flutes are arranged on the whirligig; Unidirectional following ratchet face is arranged on the lower surface; Cylinder follower on the mandrel contacts with the helicla flute on the whirligig, and the outer wall of whirligig and the inwall of shell constitute matched in clearance, and the outer wall of inwall and mandrel also constitutes matched in clearance; The load-bearing joint is through being threaded in the lower end of shell, and unidirectional last ratchet face is arranged at its top, contacts with the following ratchet face of whirligig, has constituted detent mechanism, holds the face of hitting 22 on the bottom has; The screw thread of mandrel bottom is used for connecting drill bit.
The beneficial effect of the utility model is: (1) this instrument can be converted into the fluid energy of drilling fluid moment of torsion and axial impact loading, and directly acts on the drill bit, has improved efficiency of breaking rock greatly; (2) drilling tool produces the stick-slip phenomenon that torsional pulse power can weaken drill bit, significantly improves rate of penetration; (3) this tool construction is simple, and length is short, can in deflecting operation and crooked hole, use.
Description of drawings
Fig. 1 is the structural representation of a kind of reciprocating type percussive-rotary drilling instrument of the utility model.
Fig. 2 is the shell 9 that obtained by cross section A-A of a kind of reciprocating type percussive-rotary drilling instrument of the utility model, the generalized section that whirligig 16 cooperates with mandrel 10.
Fig. 3 is the whirligig sketch map of a kind of reciprocating type percussive-rotary drilling instrument of the utility model.
Among the figure: 1. flow control valve, 2. top sub, 3. valve stroke control device, 4. valve rod, 5. valve body, 6. valve head; 7. seal, 8. spring, 9. shell, 10. mandrel, 11. times ratchet faces, ratchet face on 12.; 13. centre bore, 14. unload valve spring, 15. cylinder followers, 16. whirligigs, 17. load-bearing joints, 18. cavity volumes; 19. automatic valve device, 20. valve seats, 21. helicla flutes hold the face of hitting on 22., hold the face of hitting 23. times.
The specific embodiment
Like Fig. 1, Fig. 2, shown in Figure 3, a kind of reciprocating type percussive-rotary drilling instrument of the utility model is made up of flow control valve 1, top sub 2, automatic valve device 19, shell 9, mandrel 10, whirligig 16, load-bearing joint 17 etc.Its architectural feature is: top sub 2 is through being threaded in shell 9 tops, and flow control valve 1 is equipped with in its inside; Automatic valve device 19 is installed in the top sub 2, automatic valve device 19 by valve stroke calibrating installation 3, valve rod 4, valve body 5, valve head 6, unload valve spring 14 and constitute, the upper surface of it and shell 9, mandrel 10 has constituted variable volume cavity volume 18 jointly; The top major diameter external surface of mandrel 10 cooperates with the internal surface gaps of shell 9, and seal 7 is arranged between the two; Three helicla flutes 21 are arranged on the whirligig 16; Unidirectional following ratchet face 11 is arranged on the lower surface; Cylinder follower 15 on the mandrel 10 contacts with helicla flute 21 on the whirligig 16; The inwall of the outer wall of whirligig 16 and shell 9 constitutes matched in clearance, and the outer wall of inwall and mandrel 10 also constitutes matched in clearance; Load-bearing joint 17 is through being threaded in the lower end of shell 9, and unidirectional last ratchet face 12 is arranged at its top, contacts with the following ratchet face 11 of whirligig 16, has constituted detent mechanism, holds the face of hitting 22 on the bottom has; The screw thread of mandrel 10 bottoms is used for connecting drill bit.
This instrument is connected drill string bottom.When in running order, the pressure reduction of dependence fluid just valve head 6 is pressed on the valve seat 20, and fluid flows in the variable volume cavity volume 18; Along with increasing of fluid; Pressure in the variable volume cavity volume 18 and volume increase, and promote shell 9 and move upward, and move upward thereby promote drill string; In the process that shell 9 moves upward; Whirligig 16 relative mandrels 10 move upward; Helicla flute 21 on cylinder follower 15 and the whirligig 16 interacts, and the last ratchet face 12 of the following ratchet face 11 of whirligig 16 lower ends and load-bearing joint 17 interacts, and makes whirligig 16 fixing; So 16 pairs of mandrels of whirligig 10 produce tangential forces, thereby form moment of torsion; After shell 9 moved upward, valve head 6 separated with valve seat 20, and fluid flows out through the hydrophthalmia of centre bore 13 from drill bit, and the pressure reduction that valve head 6 and valve seat are 20 reduces, and the pressure in the variable volume cavity volume 18 also reduces, and the drill string on shell 9 and top begins to move downward; Under the effect of unloading valve spring 14, valve head moves upward, under the action of gravity of spring 8 and drill string self; On hold the face of hitting (22) the following face of hitting (23) that holds on the drill bit clashed into, drill bit is produced ballistic work, shell 9 begins to return to initial relative position with mandrel 10; In the process that shell 9 moves downward, cylinder follower 15 still interacts with helicla flute 21, has produced opposite effect power when moving upward with shell 9; But because the ratchet face is unidirectional; Can't make whirligig 16 fixing, also just can't produce moment of torsion, so mandrel 10 can not done reverse rotation mandrel 10; When valve head 6 and mandrel 10 all are returned to initial position, continue the above-mentioned course of work of circulation.Can measure and control the pressure and the speed of fluid through flow control valve 1; Thereby determined the cycle period of automatic valve device; Quick impact repeatedly can make the relative drill string of drill bit do interrupted periodic rotary; Under the effect of the pressure of the drill and ballistic work, rate of penetration and drilling efficiency have been improved greatly simultaneously.
Claims (3)
1. a reciprocating type percussive-rotary drilling instrument is made up of flow control valve (1), top sub (2), automatic valve device (19), shell (9), mandrel (10), whirligig (16), load-bearing joint (17) etc.; It is characterized in that: top sub (2) is through being threaded in shell (9) top, and flow control valve (1) is equipped with in its inside; Automatic valve device (19) is installed in top sub (2) lower end, and the upper surface of it and shell (9), mandrel (10) has constituted variable volume cavity volume (18) jointly; The inner surface of the outer surface of upper of mandrel (10) and shell (9) constitutes matched in clearance, and seal (7) is arranged between the two, and cylinder follower (15) is arranged on the mandrel (10), contacts with helicla flute (21) on the whirligig (16); Load-bearing joint (17) is connected the lower end of shell (9), and its top has unidirectional last ratchet face (12) to contact with the following ratchet face (11) of whirligig (16); The screw thread of mandrel (10) bottom is used for connecting drill bit.
2. a kind of reciprocating type percussive-rotary drilling instrument according to claim 1 is characterized in that: automatic valve device (19) by valve stroke calibrating installation (3), valve rod (4), valve body (5), valve head (6), unload valve spring (14) and constitute.
3. a kind of reciprocating type percussive-rotary drilling instrument according to claim 1 is characterized in that: three helicla flutes (21) are arranged on the whirligig (16), unidirectional following ratchet face (11) is arranged on the lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203268273U CN202215148U (en) | 2011-09-02 | 2011-09-02 | Reciprocating type percussive-rotary drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203268273U CN202215148U (en) | 2011-09-02 | 2011-09-02 | Reciprocating type percussive-rotary drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215148U true CN202215148U (en) | 2012-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203268273U Expired - Fee Related CN202215148U (en) | 2011-09-02 | 2011-09-02 | Reciprocating type percussive-rotary drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215148U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418474A (en) * | 2011-08-09 | 2012-04-18 | 西南石油大学 | Reciprocating percussive-rotary drilling tool |
| CN105257212A (en) * | 2015-11-03 | 2016-01-20 | 西南石油大学 | Drilling tool with spinning coupling function and operating method of drilling tool |
| CN113047769A (en) * | 2021-05-21 | 2021-06-29 | 长江大学 | Self-adaptive percussion drill capable of rotating circularly |
-
2011
- 2011-09-02 CN CN2011203268273U patent/CN202215148U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418474A (en) * | 2011-08-09 | 2012-04-18 | 西南石油大学 | Reciprocating percussive-rotary drilling tool |
| CN105257212A (en) * | 2015-11-03 | 2016-01-20 | 西南石油大学 | Drilling tool with spinning coupling function and operating method of drilling tool |
| CN113047769A (en) * | 2021-05-21 | 2021-06-29 | 长江大学 | Self-adaptive percussion drill capable of rotating circularly |
| CN113047769B (en) * | 2021-05-21 | 2023-12-12 | 长江大学 | Rotatable self-adaptive impact drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20120902 |