CN203035145U - Fishable bottom plug and fishing tool for expansion pipe - Google Patents
Fishable bottom plug and fishing tool for expansion pipe Download PDFInfo
- Publication number
- CN203035145U CN203035145U CN2012206055112U CN201220605511U CN203035145U CN 203035145 U CN203035145 U CN 203035145U CN 2012206055112 U CN2012206055112 U CN 2012206055112U CN 201220605511 U CN201220605511 U CN 201220605511U CN 203035145 U CN203035145 U CN 203035145U
- Authority
- CN
- China
- Prior art keywords
- fishing tool
- expansion tube
- dowel bushing
- bottom plug
- pin
- Prior art date
- 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 - Lifetime
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Abstract
The utility model relates to a fishable bottom plug and a fishing tool for an expansion pipe. The fishable bottom plug and the fishing tool for the expansion pipe consist of the fishable bottom plug and the fishing tool, and a main body is a pin seat. A T-shaped groove is formed in the pin seat, and the head portion of a pin is arranged in the groove in a clamped mode. When the pin slides up and down along the T-shaped groove, the pin can stretch out or retract in the horizontal direction, so that the fact that the fishable bottom plug is connected with the expansion pipe in an inserting mode or the fishable bottom plug is broken away from the expansion pipe can be achieved. The bottom of the expansion pipe is sealed by the fishable bottom plug, liquid which is pumped into the expansion pipe can establish a high pressure area below an expansion head in the expansion pipe so as to push the expansion head to move, and expansion construction of the expansion pipe is completed. After the expansion construction is finished, the specially-used fishing tool can be thrown in, a sectioning locking claw of the fishing tool can clamp a draw bar of the fishable bottom plug, and the entire bottom plug is fished out. When fishing out the entire bottom plug can not be achieved, the specially-used fishing tool can fish out part of components of the expansion pipe, and the remaining part of the bottom plug is ground and milled conveniently.
Description
Technical field
The utility model relates to a kind of oil-water well subsidy and blocks up and fishing tool with expansion tube corollary apparatus and fishing tool, particularly a kind of end of dragging for.
Background technology
At present, expansion tube is the expansion process that adopt from the bottom to top when subsidy construction more, in order to make expansion tube begin to expand, in expansion process, reduce weight on hook at desired location, need be installed the end in the lower end of expansion tube blocks up, make expansion-head and the end form a bay between stifled, when expansion tube expands in the bay pumping liquid, rely on the pressure promotion expansion-head of liquid to move upward, realize that expansion tube radially swells, after the construction of expanding finishes, again the end is blocked up and removed.The method of drilling is mainly adopted in stifled removal at the bottom of the bay, this kind technology more complicated, and construction period is longer, and bores and stay ring in the expansion tube bottom easily after stifled.Can to drag for the end stifled though have, but the end, is stifled and expansion tube between the employing draw-in groove form location that has, namely at one annular groove of expansion tube bottom inner headed face processing, can drag for stifled lower end, the end is the distinguish claw shape of up-small and down-big band tapering, divide the bottom of claw to be stuck in the ring groove, the stifled relative expansion pipe in the end can only be moved up, can not move down; The employing slips form location that has namely relies on the slips stifled and expansion tube locking end of with.Locate for adopting the draw-in groove form, because the restriction of expansion tube wall thickness, the degree of depth of ring groove can not be too dark, when fluid pressure is excessive in the expansion tube, expansion tube can expand stifled position the end of at, the branch claw is deviate from from the ring groove of expansion tube, caused and to drag for stifled the coming off of the stifled seal failure in the end or the end, the expansion tube construction can't be finished smoothly.For adopting the slips form to locate, also can make the same problem of the stifled appearance in the end because of the expansion of the expansion tube stifled position end of at.
The utility model content
At the defective that above-mentioned prior art exists, the technical problems to be solved in the utility model provides a kind of expansion tube and blocks up and fishing tool with dragging for the end, the sealing expansion tube bottom, and can bear downward fluid pressure, the construction of expanding can be carried out smoothly; After the construction of expanding finished, this can drag for stifled can being pulled out by this fishing tool in the end, saves and bores stifled construction, and do not stay ring in the expansion tube bottom.
For solving the problems of the technologies described above, the utility model expansion tube is formed by dragging for the stifled and fishing tool in the end with dragging for the stifled and fishing tool in the end, end blocking package be can drag for and lifting rod 1, pressure ring 2, dowel bushing 5, pin 6, shear pin 7 and baffle ring 8 drawn together, be installed in expansion tube 9 bottoms, fishing tool comprises top connection 10, spring 11, distinguish lock pawl 12 and urceolus 13, wherein, above-mentioned dowel bushing 5 and pressure ring 2 are threaded; Above-mentioned dowel bushing 5 is provided with T-slot, and the T-slot axis becomes the V font with dowel bushing 5 axis; Pin 6 heads are stuck in the described T-slot, can slide in groove, and the bar portion of pin 6 can insert in the radial direction through hole of expansion tube 9; The periphery of dowel bushing 5 bottoms is provided with groove, and shear pin 7 is screwed in expansion tube 9 screwed holes, in the groove on the afterbody embedding dowel bushing 5 bottom peripheries; The lower port of T-slot on the above-mentioned baffle ring 8 shutoff dowel bushings 5, it is threaded with dowel bushing 5; Lifting rod 1 top is provided with annular groove, and the middle part is prismatic, and the bottom is threaded with dowel bushing 5; Above-mentioned urceolus 13 lower ends are the regular polygon hole, with lifting rod 1 middle part terrace with edge matched in clearance; Above-mentioned distinguish lock pawl 12 is interior pawl, blocks lifting rod 1 upper grooves, above the above-mentioned distinguish lock pawl 12 spring 11 is housed, and spring 11 upper surfaces withstand on the step of top connection 10 endoporus; Above-mentioned top connection 10 is threaded with urceolus 13.
Between above-mentioned lifting rod 1 and the dowel bushing 5 sealing ring 3 is set; Between above-mentioned dowel bushing 5 and the pressure ring 2 joint ring 4 is set.
Above-mentioned urceolus 13 centers are the variable cross-section hole, are followed successively by the polygonal hole, minor diameter circular hole, following little big conical bore and the major diameter circular hole of that match with the terrace with edge of lifting rod 1 from bottom to up.
Compare with present technical scheme, the utility model expansion tube can be pulled out by fishing tool after the construction of expanding finishes with dragging for the stifled and fishing tool in the end, has reduced and has bored stifled operation, has shortened duty cycle; This can drag for the mode that adopts pin to peg graft between the stifled and expansion tube in the end, and the reliability height is provided with the salable bigger gap of joint ring group, and when having avoided that fluid pressure is too high in the expansion tube, stifled position internal diameter becomes big to expansion tube the end of at, causes the stifled seal failure in the end or comes off; This can drag for the end and stifled be easy drilling material except lifting rod 1, when can dragging for the end during stifled can not pulling out, can be with the fishing tool rotation and pull out and can drag for the lifting rod 1 of the end in the middle of stifled, and be convenient to bore and mill the remainder that blocks up at the end.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Fig. 1 uses for the utility model expansion tube can drag for the stifled structural representation in the end;
Block up and the overall structure schematic diagram of special-purpose fishing tool with dragging for by the end for the utility model expansion tube for Fig. 2;
Fig. 3 is the structural representation of the special-purpose fishing tool of the utility model.
The specific embodiment
As shown in Figure 1, the utility model expansion tube stifled mainly is made up of lifting rod 1, pressure ring 2, dowel bushing 5, pin 6, shear pin 7 and baffle ring 8 etc. with dragging for the end, and joint ring 4 is equipped with on the top of dowel bushing 5, and compresses with pressure ring 2; Lifting rod 1 bottom is screwed in the screwed hole of dowel bushing 5 centres, relies on sealing ring 3 sealing gaps between the two; Dowel bushing 5 bottoms are provided with T-slot, and the axis of T-slot becomes the V font with the axis of dowel bushing 5; After the head of pin 6 is packed in the T-slot, baffle ring 8 and dowel bushing 5 are tightened the lower port of shutoff T-slot.When pin 6 is positioned at the T-slot lower end, in pin 6 whole indentation T-slots, dragging in the stifled expansion tube 9 of packing in the end, make dowel bushing 5 relative pins 6 to lower slider, pin 6 stretches out along the radial direction of dowel bushing 5, the bar portion of pin 6 inserts in the radial hole of expansion tube 9, and realization can be dragged for the end and stifledly is connected with expansion tube 9.When pin 6 slided into the T-slot upper end, pin 6 heads can withstand on expansion tube 9 inwalls, and dowel bushing 5 relative expansion pipes can not continue to move down.
Be screwed into shear pin 7 in the screwed hole of expansion tube 9 this moment, and the afterbody of shear pin 7 embeds in the groove of dowel bushing 5 bottoms, can drag for stifled and expansion tube 9 location, the end; Number by changing shear pin 7 and the size of its tail diameter can be adjusted and salvage the starting pressure of end when stifled.
As shown in Figures 2 and 3, the utility model expansion tube is made up of top connection 10, spring 11, distinguish lock pawl 12 and urceolus 13 etc. with dragging for the stifled fishing tool in the end.The centre bore of urceolus 13 is followed successively by polygonal hole, roundlet taper hole, conical bore, big hole from bottom to up.During the fishing tool assembling, rely on the step of top connection 10 endoporus to lower compression spring 11, make spring 11 produce certain pretightning force, distinguish lock pawl 12 lower end parts of this moment are received in its bottom, and can not be strutted in the small sircle hole position of urceolus 13; When upwards promote distinguish lock pawl 12 compression springs 11, when making distinguish lock pawl 12 lower end parts in the major diameter circular hole of urceolus 13, its bottom can be strutted.
In when construction, the utility model expansion tube is stifledly gone into well as the part of expansion tube bay with expansion tube with dragging for the end, as shown in Figure 1.After the construction of expanding finishes, be lowered to the utility model expansion tube with dragging for the stifled fishing tool in the end, as shown in Figure 3.When lifting rod 1 guide head enters the small sircle hole of urceolus 13 bottoms and 12 times end in contact of distinguish lock pawl, promoting distinguish lock pawl 12 compression springs 11 moves up, when distinguish lock pawl 12 bottoms move to the big hole position of urceolus 13, under the effect of spring 11 downward thrusts, the guide head at lifting rod 1 top struts the claw of distinguish lock pawl 12 lower ends, enter distinguish lock pawl 12 endoporus, continue to press down fishing tool, the inside boss in distinguish lock pawl 12 bottoms can be stuck in the ring groove on lifting rod 1 top, as shown in Figure 2.When on when carrying special-purpose fishing tool, distinguish lock pawl 12 can block the annular groove on lifting rod 1 top, making its drive dowel bushing 5 cut off shear pin 7 moves up, under the constraint of T-slot on the dowel bushing 5, pin 6 is withdrawn along dowel bushing 5 radial directions, and from the radial hole of expansion tube 9, withdraw from, can drag for stifled and expansion tube 9 disengagements in the end.When pin 6 slides into the T-slot bottom, can be blocked by baffle ring 8, can not deviate from from the T-slot bottom, wholely drag for stifled being pulled out in the end.
If on carry fishing tool can not will be able to drag for stifled the pulling out in the end, then press down and rotate fishing tool, make the inner polygon borehole jack of urceolus 13 lower ends on the polygon prism of lifting rod 1, drive lifting rod 1 rotation, from dowel bushing 5, withdraw from, propose expansion tube 9 with fishing tool, down corresponding instrument bores mill off and can drag for the stifled rest parts in the end then.
Claims (3)
1. an expansion tube is with dragging for the stifled and fishing tool in the end, the end, blocked up and fishing tool is formed by dragging for, end blocking package be can drag for and lifting rod (1), pressure ring (2), dowel bushing (5), pin (6), shear pin (7) and baffle ring (8) drawn together, be installed in expansion tube (9) bottom, fishing tool comprises top connection (10), spring (11), distinguish lock pawl (12) and urceolus (13), and it is characterized in that: described dowel bushing (5) and pressure ring (2) are threaded; Described dowel bushing (5) is provided with T-slot, and the T-slot axis becomes the V font with dowel bushing (5) axis; Pin (6) head is stuck in the described T-slot, can slide in groove, and the bar portion of pin (6) can insert in the radial direction through hole of expansion tube (9); The periphery of dowel bushing (5) bottom is provided with groove, and shear pin (7) is screwed in expansion tube (9) screwed hole, in the groove on the periphery of afterbody embedding dowel bushing (5) bottom; Described baffle ring (8) shutoff dowel bushing (5) is gone up the lower port of T-slot, and it is threaded with dowel bushing (5); Lifting rod (1) top is provided with annular groove, and the middle part is prismatic, and the bottom is threaded with dowel bushing (5); Described urceolus (13) lower end is the regular polygon hole, with lifting rod (1) middle part terrace with edge matched in clearance; Described distinguish lock pawl (12) is interior pawl, blocks lifting rod (1) upper grooves, above the described distinguish lock pawl (12) spring (11) is housed, and spring (11) upper surface withstands on the step of top connection (10) endoporus; Described top connection (10) is threaded with urceolus (13).
2. expansion tube according to claim 1 is characterized in that: between described lifting rod (1) and the dowel bushing (5) sealing ring (3) is set with dragging for the stifled and fishing tool in the end; Between described dowel bushing (5) and the pressure ring (2) joint ring (4) is set.
3. expansion tube according to claim 1 is with dragging for the stifled and fishing tool in the end, it is characterized in that: described urceolus (13) center is the variable cross-section hole, is followed successively by the polygonal hole, minor diameter circular hole, following little big conical bore and the major diameter circular hole of that match with the terrace with edge of lifting rod (1) from bottom to up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206055112U CN203035145U (en) | 2012-11-16 | 2012-11-16 | Fishable bottom plug and fishing tool for expansion pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206055112U CN203035145U (en) | 2012-11-16 | 2012-11-16 | Fishable bottom plug and fishing tool for expansion pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035145U true CN203035145U (en) | 2013-07-03 |
Family
ID=48687278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206055112U Expired - Lifetime CN203035145U (en) | 2012-11-16 | 2012-11-16 | Fishable bottom plug and fishing tool for expansion pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821472A (en) * | 2012-11-16 | 2014-05-28 | 中国石油天然气股份有限公司 | Fishing bottom plug and fishing tool combination for expansion pipe |
-
2012
- 2012-11-16 CN CN2012206055112U patent/CN203035145U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821472A (en) * | 2012-11-16 | 2014-05-28 | 中国石油天然气股份有限公司 | Fishing bottom plug and fishing tool combination for expansion pipe |
| CN103821472B (en) * | 2012-11-16 | 2016-08-03 | 中国石油天然气股份有限公司 | Expansion tube blocks up and fishing tool with dragging for the end |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130703 Effective date of abandoning: 20160803 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |