CN208347708U - A kind of tool for preventing drill string from twisting off - Google Patents
A kind of tool for preventing drill string from twisting off Download PDFInfo
- Publication number
- CN208347708U CN208347708U CN201821036104.8U CN201821036104U CN208347708U CN 208347708 U CN208347708 U CN 208347708U CN 201821036104 U CN201821036104 U CN 201821036104U CN 208347708 U CN208347708 U CN 208347708U
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- China
- Prior art keywords
- lower contact
- top connection
- torque
- transmission pin
- tool
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of tool for preventing drill string from twisting off, mainly it is made of top connection, shell, pressure regulating screw, thrust ball bearing, lower contact, sealing ring, spring and transmission pin, it is characterized by: when carrying out drillng operation, torque passes through top connection, lower contact is passed to by transmission pin again, at this time since transmission pin is stuck in arc groove, it is possible to drive lower contact to rotate together, be crept into；When lower end, drill bit meets with obstruction when stopping rotating; the lower contact connecting with drill bit is stopped rotating; top connection torque under the drive of upper end drill string gathers; when reaching the torque that will be driven pin extrusion arc groove; top connection is dallied with respect to lower contact, to protect downhole tool from causing to twist off accident because torque is excessive.
Description
Technical field
It is especially a kind of for protecting downhole tool from because of the torsion on drill string the utility model relates to a kind of drilling tool
The device that square is excessive and twists off drill string belongs to mechanical engineering or drilling engineering technical field.
Background technique
With the rapid development of domestic and international drilling technology, bit speed is greatly improved compared in the past, but asks
It inscribes also following.In drilling process drill bit often because torque it is excessive or it is unstable there is situations such as stall, and due to
Phenomena such as depth of drilling well and the complexity on stratum are higher and higher, are easy to appear cave-in, undergauge, cause drill bit bit freezing.
Once bit freezing phenomenon occurs in drill bit, since turntable persistently rotates, the torque on drill string will continue to increase, and the torque persistently increased can
The phenomenon that drill string capable of being caused to twist off appearance.
Domestic main torque protection device is a kind of energy-storage buffering device at present, and 201510867447.3 institute of application number is public
" a kind of buffering energy storage equipment of protection underground helicoid hydraulic motor and drill bit combination " opened, mainly by main shaft, accumulation of energy component and is placed on
Shell composition on main shaft；The device adjusts the bit pressure size that drill bit is born by accumulation of energy component, reduces vibration while passing
Torque delivery prevents excessive torque from damaging to helicoid hydraulic motor and drill bit, and certain buffering is played to helicoid hydraulic motor and drill bit
And protective effect.And device disclosed in patent " bit protector " (application number 201721165840.9) is mainly used for reducing well
Subdrilling tool bending, keeping drill bit to be close to always, shaft bottom revolving speed is uniform, prevents the destruction because of drill bit caused by sending the uneven stall of brill.More than
Two kinds of devices are than more typical downhole tool protective device, and domestic others torque protection device is also generally so, not
The function of downhole tool damage is protected when drill bit is stuck.Therefore develop one kind protects downhole tool to exempt from when drill bit is stuck
The device being damaged is of great significance.
Utility model content
The purpose of this utility model is: in order to overcome above-mentioned difficult point, spy proposes a kind of tool for preventing drill string from twisting off.
In order to achieve the above object, the technical solution adopted in the utility model is: a kind of tool for preventing drill string from twisting off, main
It to be made of top connection, shell, pressure regulating screw, thrust ball bearing, lower contact, sealing ring, spring and transmission pin, feature
Be: the top connection and shell are connected through a screw thread, and the two is formed by toroidal cavity inner sleeve and loads connector；The top connection
For multi-diameter shaft, eight arc grooves evenly distributed in the circumferential direction are equipped at middle bench, for assembling transmission pin；It is described
It is equipped with seal groove at top connection lower end and lower contact cooperation, prevents high-pressure fluid from inversely flowing into arc groove for installing sealing ring
Place；The upper end of the lower contact is equipped with eight radial bolts holes；The transmission pin is equipped with hemisphere and cylinder step, the circle
In the arc groove that pylon rank is caught in top connection under the elastic force effect of spring for righting spring, the hemisphere；The spring
Lower end is against trundle and nails on, and upper end is against on pressure regulating screw；The pressure regulating screw is installed on the radial direction of lower contact by screw thread
In bolt hole, pressure regulating screw is equipped with the groove rotated using specific purpose tool, thus the decrement and tune of adjustment spring
The pressure size of section transmission pin, enables a device to transmit different torques and meets the drilling well demand of different situations；Into
When row drillng operation, torque is by top connection, then passes to lower contact by transmission pin, at this time since transmission pin is stuck in circular arc
In slot, it is possible to drive lower contact to rotate together, be crept into；When lower end, drill bit meets with obstruction when stopping rotating, with drill bit
The lower contact of connection is stopped rotating, and top connection torque under the drive of upper end drill string gathers, and squeezes out transmission pin once reaching
When the torque of arc groove, top connection is dallied with respect to lower contact, to protect downhole tool from causing because torque is excessive
Twist off accident.
Compared with prior art, the utility model has the beneficial effect that the anti-drill string of (1) the application twists off tool
Structure is simple, easy to process, and assembly is quick.(2) this tool can be by the pressure size of adjustment spring, to adjust transmission
Torque, and can form multiple rows of transmission by axially adding multiple rows of torque protection mechanism, more be able to satisfy various Different Stratas
The drillng operation of condition.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for the tool for preventing drill string from twisting off of the utility model；
Fig. 2 is the structural schematic diagram of top connection in the utility model；
Fig. 3 is the A-A diagrammatic cross-section in Fig. 1；
Fig. 4 is the partial enlarged view of the part I in Fig. 1；
Fig. 5 is the structural schematic diagram that pin is driven in the utility model.
In figure: 1. top connections, 1a. arc groove, 2. shells, 3. pressure regulating screws, 4. thrust ball bearings, 5. lower contacts, 6. is close
Seal, 7. springs, 8. transmission pins, 8a. hemisphere, 8b. cylinder step.
Specific embodiment
As Figure 1-Figure 5, a kind of tool for preventing drill string from twisting off, mainly by top connection 1, shell 2, pressure regulating screw 3, push away
Power ball bearing 4, lower contact 5, sealing ring 6, spring 7 and transmission pin 8 are formed, it is characterised in that: the top connection 1 and shell
2 are connected through a screw thread, and the two is formed by toroidal cavity inner sleeve and loads connector 5；The top connection 1 is multi-diameter shaft, middle part platform
Eight arc groove 1a evenly distributed in the circumferential direction are equipped at rank, for assembling transmission pin 8；1 lower end of top connection with
It is equipped with seal groove at 5 cooperation of lower contact, prevents high-pressure fluid from inversely flowing at arc groove 1a for installing sealing ring 6；It is described
The upper end of lower contact 5 is equipped with eight radial bolts holes；The transmission pin 8 is equipped with hemisphere 8a and cylinder step 8b, the circle
In the arc groove 1a that pylon rank 8b is caught in top connection 1 under the elastic force effect of spring 7 for righting spring 7, the hemisphere 8a；
7 lower end of spring is against on transmission pin 8, and upper end is against on pressure regulating screw 3；The pressure regulating screw 3 is installed on by screw thread
In the radial bolts hole of lower contact 5, pressure regulating screw 3 is equipped with the groove rotated using specific purpose tool, thus adjustment spring 7
Decrement and adjust transmission pin 8 pressure size, enable a device to transmit different torques and meet different situations
Drilling well demand；When carrying out drillng operation, torque is by top connection 1, then passes to lower contact 5 by transmission pin 8, at this time by
It is stuck in arc groove 1a in transmission pin 8, it is possible to drive lower contact 5 to rotate together, be crept into；When lower end, drill bit encounters
When obstruction is stopped rotating, the lower contact 5 connecting with drill bit is stopped rotating, and the torque under the drive of upper end drill string of top connection 1 gathers,
When reaching the torque that will be driven the extrusion of pin 8 arc groove 1a, top connection 1 is dallied with respect to lower contact 5, to protect well
Lower tool because torque is excessive from causing to twist off accident.
Claims (1)
1. a kind of tool for preventing drill string from twisting off, mainly by top connection (1), shell (2), pressure regulating screw (3), thrust ball bearing
(4), lower contact (5), sealing ring (6), spring (7) and transmission pin (8) formed, it is characterised in that: the top connection (1) and
Shell (2) is connected through a screw thread, and the two is formed by toroidal cavity inner sleeve and loads connector (5)；The top connection (1) is ladder
Axis is equipped with eight arc grooves (1a) evenly distributed in the circumferential direction at middle bench, for assembling transmission pin (8)；Institute
It states and is equipped with seal groove at top connection (1) lower end and lower contact (5) cooperation, prevent high-pressure fluid inverse for installing sealing ring (6)
To at inflow arc groove (1a)；The upper end of the lower contact (5) is equipped with eight radial bolts holes；The transmission pin (8) is equipped with
Hemisphere (8a) and cylinder step (8b), the cylinder step (8b) are used for righting spring (7), and the hemisphere (8a) is in spring
(7) it is caught in the arc groove (1a) of top connection (1) under elastic force effect；Spring (7) lower end is against in transmission pin (8),
Upper end is against on pressure regulating screw (3)；The pressure regulating screw (3) is installed in the radial bolts hole of lower contact (5) by screw thread, is adjusted
Pressure screw (3) is equipped with the groove rotated using specific purpose tool, thus the decrement of adjustment spring (7) and adjusting transmission
The pressure size of pin (8) enables a device to transmit different torques and meets the drilling well demand of different situations；It is being bored
When well operations, torque is by top connection (1), then passes to lower contact (5) by transmission pin (8), at this time due to being driven pin (8)
It is stuck in arc groove (1a), it is possible to drive lower contact (5) to rotate together, be crept into；When lower end, drill bit, which meets with obstruction, stops
It is spin-ended that the lower contact (5) connecting with drill bit is stopped rotating, and top connection (1) torque under the drive of upper end drill string gathers when turning, and one
When denier reaches the torque that will be driven pin (8) extrusion arc groove (1a), top connection (1) is dallied with respect to lower contact (5), thus
Protect downhole tool from causing to twist off accident because torque is excessive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821036104.8U CN208347708U (en) | 2018-07-02 | 2018-07-02 | A kind of tool for preventing drill string from twisting off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821036104.8U CN208347708U (en) | 2018-07-02 | 2018-07-02 | A kind of tool for preventing drill string from twisting off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208347708U true CN208347708U (en) | 2019-01-08 |
Family
ID=64881463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821036104.8U Expired - Fee Related CN208347708U (en) | 2018-07-02 | 2018-07-02 | A kind of tool for preventing drill string from twisting off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208347708U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014390A (en) * | 2019-05-08 | 2019-07-16 | 南京汤峰机电有限公司 | Hand-held device |
| CN112373555A (en) * | 2020-11-18 | 2021-02-19 | 杭州琳达汽配有限公司 | Self-protection automobile steering shaft |
| CN114032884A (en) * | 2021-11-10 | 2022-02-11 | 江苏建院营造股份有限公司 | Stable high-bearing recyclable twisted thread expanded steel pile |
-
2018
- 2018-07-02 CN CN201821036104.8U patent/CN208347708U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014390A (en) * | 2019-05-08 | 2019-07-16 | 南京汤峰机电有限公司 | Hand-held device |
| CN110014390B (en) * | 2019-05-08 | 2023-12-12 | 南京汤峰机电有限公司 | Hand-held device |
| CN112373555A (en) * | 2020-11-18 | 2021-02-19 | 杭州琳达汽配有限公司 | Self-protection automobile steering shaft |
| CN112373555B (en) * | 2020-11-18 | 2022-03-25 | 杭州琳达汽配有限公司 | Self-protection automobile steering shaft |
| CN114032884A (en) * | 2021-11-10 | 2022-02-11 | 江苏建院营造股份有限公司 | Stable high-bearing recyclable twisted thread expanded steel pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 Termination date: 20200702 |