CN212054553U - Pulse torsion reversing device for well repair - Google Patents
Pulse torsion reversing device for well repair Download PDFInfo
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- CN212054553U CN212054553U CN201922052766.5U CN201922052766U CN212054553U CN 212054553 U CN212054553 U CN 212054553U CN 201922052766 U CN201922052766 U CN 201922052766U CN 212054553 U CN212054553 U CN 212054553U
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Abstract
The utility model discloses a pulse torsion back-off device for well repair, which comprises an outer cylinder component (10); a pulse pressure generator consisting of a valve rod assembly (20) and a central shaft assembly (30) is sequentially arranged in the outer cylinder assembly (10) from top to bottom, and pulse axial thrust generated by the pulse pressure generator is converted into pulse rotating torque through a conversion assembly (40); the pulse rotating torque forms pulse torque to the required reversed thread through the torque transmission assembly (50), and the success rate of drilling tool reversing is improved. The utility model discloses carry out the back-off operation with the back-off drilling tool together, after applying the biggest back-off moment of torsion, still can't open the lower part drilling tool upside down, can open the slush pump this moment, twist reverse the back-off ware through the pulse and turn into the pulse moment of torsion with mud pressure and provide the mandrel, increase back-off impact torque to improve the back-off success rate.
Description
Technical Field
The utility model relates to a well workover is with pulse torsion back-off ware belongs to oil field drilling tool technical field.
Background
In the prior art, when a well is repaired, a direct lower back-off drilling tool is generally adopted for back-off. The back-off success rate is low. Under the condition that the maximum torque is still not opened, the torque can be increased to forcibly back off, and the forced back-off is easy to cause the breakage accident of the back-off drilling tool. And the other method is to perform inverse buckling after explosion buckling is performed, so that the explosion buckling is too high in cost and complex in operation, and generally is not considered and is only performed as a final measure. Therefore, the prior art has shortcomings and needs to be further improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ware of reversing reverse is twistd reverse to pulse for workover, provides the mandrel through turning into the pulse moment of torsion with mud pressure, increases the back-off impact torque to improve the back-off success rate and overcome prior art not enough.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model relates to a pulse torsion reversing device for well repair, which comprises an outer cylinder component; a pulse pressure generator consisting of a valve rod component and a central shaft component is sequentially arranged in the outer barrel component from top to bottom, and pulse shaft thrust generated by the pulse pressure generator is converted into pulse rotating torque through a conversion component; the pulse rotating torque forms pulse torque to the reverse-buckled thread required by the drilling tool through the torque transmission assembly, and the success rate of the reverse-buckling of the drilling tool is improved.
In the pulse torsion reversing device for well repair, the outer cylinder component comprises an upper joint, an upper connector, a spline body and a spline sleeve which are sequentially in threaded connection from top to bottom; all the threaded connections are externally provided with connecting seal rings.
In the pulse torsion reversing device for well repair, the valve rod assembly is positioned in the upper connector and comprises a valve rod; an upper ring sleeve, a middle ring sleeve and a lower ring sleeve are sequentially arranged outside the valve rod from top to bottom; a spring is arranged between the upper ring sleeve and the middle ring sleeve; a valve rod rectangular spring is arranged between the middle ring sleeve and the lower ring sleeve; an adjusting pad is arranged between the bottom of the valve rod rectangular spring and the lower ring sleeve.
In the pulse torsion reversing device for well repair, bypass holes are formed in the upper end and the lower end of the valve rod, the upper ring sleeve and the middle ring sleeve.
In the pulse torsion reversing device for well repair, the central shaft assembly is positioned in the upper connecting body and the connecting body and comprises a central shaft; the top of the central shaft is provided with a valve seat; a central shaft rectangular spring is arranged between the shaft shoulder of the central shaft and the upper end surface of the connecting body, and a limiting sleeve is arranged outside the central shaft rectangular spring; the lower end surface of the central shaft is provided with a top ring.
In the pulse torsion reversing device for well repair, the valve seat is connected with the central shaft through the stabilizing nail.
In the pulse torsion reversing device for well repair, the conversion assembly is positioned at the upper part in the spline body; the conversion assembly comprises a torque transmission jacket; the excircle of the torque transmission outer sleeve is connected with the spline of the spline body; the inner circle of the torque transmission outer sleeve is connected with a torque transmission shaft through nine large-pitch small-helix-angle threads to drive the torque transmission shaft to rotate; a torque transmission shaft rectangular spring is arranged outside the torque transmission shaft; the top of the rectangular spring of the torque transmission shaft is provided with a baffle ring.
In the pulse torsion reversing device for well repair, the torque transmission assembly is positioned at the lower part in the spline body; the torque transmission assembly comprises a transmission sleeve; the upper part of the inner hole of the transmission sleeve is connected with the tooth shape of the torque transmission shaft; the lower part of the inner hole of the transmission sleeve is in threaded connection with a mandrel positioned in the spline sleeve.
In the pulse torsion reversing device for well repair, sealing rings are arranged between the stabilizing nail and the central shaft, between the central shaft and the upper connector, between the torque transmission shaft and the central shaft and between the central shaft and the spline sleeve.
In the pulse torsion reversing device for well repair, wear-resistant belts are arranged between the central shaft and the torque transmission shaft and between the central shaft and the spline sleeve; and a dustproof ring is arranged between the mandrel and the spline sleeve.
Since the technical scheme is used, the utility model discloses compare with prior art, the utility model discloses carry out the back-off operation with the back-off drilling tool together, after applying the biggest back-off moment of torsion, still can't open the lower part drilling tool, can open the slush pump this moment, twist reverse the back-off ware through the pulse and turn into the pulse torque with mud pressure and provide the mandrel, increase back-off impact torque to improve the back-off success rate.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the outer barrel assembly of the present invention;
FIG. 3 is a schematic structural view of the valve stem assembly of the present invention;
fig. 4 is a schematic structural view of the central shaft assembly of the present invention;
fig. 5 is a schematic structural diagram of the conversion assembly of the present invention;
fig. 6 is a schematic structural view of the torque transmission assembly of the present invention.
The labels in the figures are: 01-sealing ring, 02-wear-resistant belt, 03-dust ring, 10-outer cylinder component, 11-upper joint, 12-upper connecting body, 13-connecting body, 14-spline body, 15-spline sleeve, 16-connecting sealing ring, 20-valve rod component, 21-valve rod, 22-upper ring sleeve, 23-middle ring sleeve, 24-lower ring sleeve, 25-spring, 26-valve rod rectangular spring, 27-adjusting pad, 28-bypass hole, 30-central shaft component, 31-central shaft, 32-valve seat, 33-central shaft rectangular spring, 34-limiting sleeve, 35-top ring, 36-stable nail, 40-converting component, 41-torque transmission outer sleeve, 42-nine large-pitch small-pitch screw thread, 43-torque transmission shaft, 44-torque drive shaft rectangular spring, 45-baffle ring, 50-torque transmission assembly, 51-drive sleeve, 52-spindle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model relates to a pulse torsion reversing device for well repair, as shown in figures 1-6, comprising an outer cylinder component 10; a pulse pressure generator composed of a valve rod assembly 20 and a central shaft assembly 30 is sequentially arranged in the outer cylinder assembly 10 from top to bottom, and pulse shaft thrust generated by the pulse pressure generator is converted into pulse rotating torque through a conversion assembly 40; the pulse rotation torque forms a pulse torque to the thread to be reversed through the torque transmission assembly 50, and the success rate of the drilling tool reversing is improved.
The outer cylinder component 10 comprises an upper joint 11, an upper connecting body 12, a connecting body 13, a spline body 14 and a spline sleeve 15 which are sequentially connected by threads from top to bottom; all threaded connections are externally provided with connecting seal rings 16.
The valve rod assembly 20 is positioned in the upper connector 11, and the valve rod assembly 20 comprises a valve rod 21; an upper ring sleeve 22, a middle ring sleeve 23 and a lower ring sleeve 24 are sequentially arranged outside the valve rod 21 from top to bottom; a spring 25 is arranged between the upper ring sleeve 22 and the middle ring sleeve 23; a valve rod rectangular spring 26 is arranged between the middle ring sleeve 23 and the lower ring sleeve 24; an adjusting pad 27 is arranged between the bottom of the valve rod rectangular spring 26 and the lower ring sleeve 24.
The upper and lower ends of the valve rod 21 and the upper and middle ring sleeves 22 and 23 are provided with bypass holes 28.
The central shaft assembly 30 is located in the upper connecting body 12 and the connecting body 13, and the central shaft assembly 30 includes a central shaft 31; the top of the central shaft 31 is provided with a valve seat 32; a central shaft rectangular spring 33 is arranged between the shaft shoulder of the central shaft 31 and the upper end surface of the connecting body 13, and a limiting sleeve 34 is arranged outside the central shaft rectangular spring 33; the lower end surface of the central shaft 31 is provided with a top ring 35.
The valve seat 32 is connected to the central shaft 31 via a stabilizing pin 36.
The conversion component 40 is positioned at the upper part in the spline body 14; the conversion assembly 40 includes a torque transmission housing 41; the excircle of the torque transmission outer sleeve 41 is in splined connection with the spline body 14; the inner circle of the torque transmission jacket 41 is connected with a torque transmission shaft 43 through a nine-head large-pitch small-helix-angle thread 42 to drive the torque transmission shaft 43 to rotate; a torque transmission shaft rectangular spring 44 is arranged outside the torque transmission shaft 43; the top of the rectangular spring 44 of the torque transmission shaft is provided with a retaining ring 45.
The torque transmission assembly 50 is located at the lower portion of the spline body 14; the torque transmitting assembly 50 includes a drive sleeve 51; the upper part of the inner hole of the transmission sleeve 51 is in tooth-shaped connection with the torque transmission shaft 43; the lower part of the inner bore of the driving sleeve 51 is in threaded connection with a spindle 52 located inside the splined sleeve 15.
Wear-resistant belts 02 are arranged between the central shaft 31 and the torque transmission shaft 43 and between the mandrel 52 and the spline sleeve 15; a dust ring 03 is arranged between the mandrel 52 and the spline sleeve 15.
The working principle of the utility model
The utility model discloses a when pulse torsion back-off device for workover uses, produce pulse pressure under the effect of mud, the high-speed flow of mud drives valve rod 21 downstream, drive ring cover 22 downstream simultaneously, compression spring 25, spring force is used in well ring cover 23, thereby compress valve rod rectangle spring 26, when valve rod 21 moved down the terminal surface and the up end of disk seat 32 laminating, form airtight space, because the effect of mud pump forms the high pressure, this high-pressure effect forms a thrust on center pin 31, in the moment of valve rod 21 and the up end of disk seat 32 laminating, the whole cavity on disk seat 32 upper portion is airtight chamber, mud flows and stops, under the effect of spring force, valve rod 21 gets back to the home position, in the moment of center pin 31 downstream mud flow resumes, under the effect of center pin rectangle spring 33, resume center pin 31 to the home position, the mud then resumes high velocity flow and will begin to produce thrust in the next pass, which will form a pulsed thrust with a certain period. The pulse thrust is transmitted downwards to the top ring 35, the top ring 35 is transmitted to the torque transmission outer sleeve 41, the torque transmission outer sleeve 41 is connected with the spline body 14 through an external spline in a sliding mode only up and down, and the torque transmission outer sleeve 41 can only slide up and down under the action of the thrust. Under the action of the rectangular spring 44 of the torque transmission shaft, the torque transmission jacket 41 is restored to the original position after one-time transmission, and the torque transmission jacket 41 is connected with the torque transmission shaft 43 through the nine-head large-pitch small-helix-angle thread 42 to convert the pulse thrust into the pulse torque. The torque transmission shaft 43 is in a toothed connection with the drive sleeve 51 and transmits a pulsating torque to the spindle 52. The success rate of the drill back-off is improved by providing a pulsed impact torque through the mandrel 52 to the desired back-off thread.
The utility model discloses carry out the back-off operation with the back-off drilling tool together, after applying the biggest back-off moment of torsion, still can't open the lower part drilling tool upside down, can open the slush pump this moment, twist reverse the back-off ware through the pulse and turn into the pulse moment of torsion with mud pressure and provide the mandrel, increase back-off impact torque to improve the back-off success rate.
Claims (10)
1. A pulse torsion reversing device for well repair comprises an outer cylinder component (10); the method is characterized in that: a pulse pressure generator consisting of a valve rod assembly (20) and a central shaft assembly (30) is sequentially arranged in the outer cylinder assembly (10) from top to bottom, pulse shaft thrust generated by the pulse pressure generator is converted into pulse rotating torque through a conversion assembly (40), and the pulse rotating torque forms pulse torque for reversed threads required by the drilling tool through a torque transmission assembly (50).
2. The pulsed torque reverser for well intervention of claim 1, wherein: the outer barrel assembly (10) comprises an upper joint (11), an upper connecting body (12), a connecting body (13), a spline body (14) and a spline sleeve (15) which are sequentially in threaded connection from top to bottom; all the thread connections are externally provided with connecting sealing rings (16).
3. The pulsed torque reverser for well intervention of claim 1, wherein: the valve rod assembly (20) is positioned in the upper connector (11), and the valve rod assembly (20) comprises a valve rod (21); an upper ring sleeve (22), a middle ring sleeve (23) and a lower ring sleeve (24) are sequentially arranged outside the valve rod (21) from top to bottom; a spring (25) is arranged between the upper ring sleeve (22) and the middle ring sleeve (23); a valve rod rectangular spring (26) is arranged between the middle ring sleeve (23) and the lower ring sleeve (24); an adjusting pad (27) is arranged between the bottom of the valve rod rectangular spring (26) and the lower ring sleeve (24).
4. The pulsed torque reverser for well intervention of claim 3, wherein: and bypass holes (28) are formed in the upper end and the lower end of the valve rod (21) and the upper ring sleeve (22) and the middle ring sleeve (23).
5. The pulsed torque reverser for well intervention of claim 1, wherein: the central shaft assembly (30) is positioned in the upper connecting body (12) and the connecting body (13), and the central shaft assembly (30) comprises a central shaft (31); the top of the central shaft (31) is provided with a valve seat (32); a central shaft rectangular spring (33) is arranged between the shaft shoulder of the central shaft (31) and the upper end surface of the connecting body (13), and a limiting sleeve (34) is arranged outside the central shaft rectangular spring (33); the lower end surface of the central shaft (31) is provided with a top ring (35).
6. The pulsed torque reverser for well intervention of claim 5, wherein: the valve seat (32) is connected with the central shaft (31) through a stable nail (36), and sealing rings (01) are arranged between the stable nail (36) and the central shaft (31) and between the central shaft (31) and the upper connector (12).
7. The pulsed torque reverser for well intervention of claim 1, wherein: the conversion assembly (40) is positioned at the inner upper part of the spline body (14); the conversion assembly (40) comprises a torque transmission housing (41); the excircle of the torque transmission outer sleeve (41) is in spline connection with the spline body (14); the inner circle of the torque transmission jacket (41) is connected with a torque transmission shaft (43) through a nine-head large-pitch small-helix-angle thread (42) to drive the torque transmission shaft (43) to rotate; a torque transmission shaft rectangular spring (44) is arranged outside the torque transmission shaft (43); the top of the rectangular spring (44) of the torque transmission shaft is provided with a baffle ring (45).
8. The pulsed torque reverser for well intervention of claim 1, wherein: the torque transmission assembly (50) is positioned at the inner lower part of the spline body (14); the torque transmission assembly (50) comprises a transmission sleeve (51); the upper part of the inner hole of the transmission sleeve (51) is in tooth-shaped connection with the torque transmission shaft (43); the lower part of the inner hole of the transmission sleeve (51) is in threaded connection with a mandrel (52) positioned in the spline sleeve (15).
9. The pulsed torque reverser for well intervention of claim 8, wherein: and sealing rings (01) are arranged between the torque transmission shaft (43) and the mandrel (52) and between the mandrel (52) and the spline sleeve (15).
10. The pulsed torque reverser for well intervention of claim 9, wherein: wear-resistant belts (02) are arranged between the central shaft (31) and the torque transmission shaft (43) and between the mandrel (52) and the spline sleeve (15); and a dustproof ring (03) is arranged between the mandrel (52) and the spline sleeve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922052766.5U CN212054553U (en) | 2019-11-25 | 2019-11-25 | Pulse torsion reversing device for well repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922052766.5U CN212054553U (en) | 2019-11-25 | 2019-11-25 | Pulse torsion reversing device for well repair |
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| Publication Number | Publication Date |
|---|---|
| CN212054553U true CN212054553U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922052766.5U Active CN212054553U (en) | 2019-11-25 | 2019-11-25 | Pulse torsion reversing device for well repair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212054553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042751A (en) * | 2019-11-25 | 2020-04-21 | 贵州高峰石油机械股份有限公司 | Pulse torsion reversing device for well repair |
-
2019
- 2019-11-25 CN CN201922052766.5U patent/CN212054553U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042751A (en) * | 2019-11-25 | 2020-04-21 | 贵州高峰石油机械股份有限公司 | Pulse torsion reversing device for well repair |
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