CN205036342U - Removable bridging plug - Google Patents
Removable bridging plug Download PDFInfo
- Publication number
- CN205036342U CN205036342U CN201520790144.1U CN201520790144U CN205036342U CN 205036342 U CN205036342 U CN 205036342U CN 201520790144 U CN201520790144 U CN 201520790144U CN 205036342 U CN205036342 U CN 205036342U
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- CN
- China
- Prior art keywords
- central tube
- bridging plug
- slips
- pressure ring
- spool
- 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 - Fee Related
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Abstract
The utility model discloses a removable bridging plug, including center tube (7), down toper clamping ring (6), it expands slips (5), goes up toper clamping ring (3), end cover nut (4) and controllable overflow valve subassembly on, to expand slips (1), packing element (2) down, center tube (7) excircle by on going in proper order the cover have lower toper clamping ring (6), expand slips (1), packing element (2) expand on, slips (5) and last toper clamping ring (3) down, down tip in center tube (7) is under blocked in toper clamping ring (6), and center tube (7) upper end is equipped with the external screw thread, last toper clamping ring (3) that end cover nut (4) and matching the external screw compressed tightly center tube (7) overcoat expand on, slips (5), packing element (2), expand slips (1) and lower toper clamping ring (6) down, center tube (7) in establish controllable overflow valve subassembly, end cover nut (4) the upper end edge be equipped with the spanner bayonet socket.
Description
Technical field
The utility model relates to underground work packing frame for movement technical field when belonging to oil, natural gas extraction; Particularly relate to a kind of removable bridging plug.
Background technology
Bridging plug is a kind of important tool of carrying out packing in petroleum exploration and development process, its effect carries out sealing in down-hole to Oil/gas Well, thus make to complete in Oil/gas Well separate stratum fracfturing and change and stifledly wait operation, have that working procedure is few, the cycle is short, card envelope position feature accurately.
Because individual well uses bridging plug more, therefore require that bridging plug can be removed at any time, there is drillability simultaneously, the convenient coiled tubing quick drill that adopts removes, but, along with going deep into of oil pipe, there will be darker bridging plug and be difficult to bore except and bore problems such as removing overlong time, operating cost is high, safety factor is low, therefore, need design a kind of more reasonably can the outer dismounting of well, operation in well, the desirable bridging plug put.
Summary of the invention
The purpose of this utility model is to provide a kind of removable bridging plug, is a kind of dismountable bridging plug that can carry out dismounting, convenient highly effective and safe packing operation in taking-up, well in well outside well.
The purpose of this utility model is achieved through the following technical solutions:
A kind of removable bridging plug, comprises central tube 7, inferior pyramidal pressure ring 6, lower expansion slips 1, packing element 2, upper expansion slips 5, upper conical pressure ring 3, end cover nut 4 and controlled circulation valve module;
Described central tube 7 cylindrical overlaps from down to up successively inferior pyramidal pressure ring 6, lower expansion slips 1, packing element 2, upper expansion slips 5 and upper conical pressure ring 3; Inferior pyramidal pressure ring 6 is stuck in central tube 7 bottom, and central tube 7 upper end is provided with external screw thread, and end cover nut 4 coordinates the upper conical pressure ring 3 compressing central tube 7 overcoat, upper expansion slips 5, packing element 2, lower expansion slips 1 and inferior pyramidal pressure ring 6 with external screw thread;
Controlled circulation valve module is established in described central tube 7; Described end cover nut 4 upper end-face edge is provided with spanner bayonet socket.
Described controlled circulation valve module comprises internal end cover nut 9, rotary valve cover 10, spool 11, Compress Spring 12 and valve shell 13;
Valve shell 13 endoporus installs Compress Spring 12, spool 11 and rotary valve cover 10 from down to up successively, valve shell 13 endoporus upper end is provided with internal thread, and internal end cover plug screw 9 and the screw-internal thread fit of valve shell 13 compress rotary valve cover 10, spool 11 and Compress Spring 12.
Positioner is provided with between described central tube 7 and valve shell 13.
Described rotary valve cover 10 has spanner screens.
Described spool 11 is provided with limited support bar.
Described spool 11 is equipped with doubled via with rotary valve cover 10.
Described central tube 7 upper end is provided with internal thread, and inner fastening plug screw 8 compresses controlled circulation valve module with the screw-internal thread fit of central tube 7.
The lower end of described central tube 7 is taper, and is designed with multiple radial groove.
The technical scheme provided as can be seen from above-mentioned the utility model, the removable bridging plug of the one that the utility model embodiment provides is a kind of dismountable bridging plug that can carry out dismounting, convenient highly effective and safe packing operation in taking-up, well in well outside well.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation of the removable bridging plug that Fig. 1 provides for the embodiment of the present invention;
The controlled circulation valve module structural representation of the removable bridging plug that Fig. 2 provides for the embodiment of the present invention;
The controlled circulation valve module structural representation of the removable bridging plug that Fig. 3 provides for the embodiment of the present invention;
The center tube structure schematic diagram of the removable bridging plug that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection domain of the present utility model.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail.
As shown in Figure 1, a kind of removable bridging plug, structure comprises central tube 7, inferior pyramidal pressure ring 6, lower expansion slips 1, packing element 2, upper expansion slips 5, upper conical pressure ring 3, end cover nut 4 and controlled circulation valve module;
Controlled circulation valve module is established in described central tube 7; Described central tube 7 upper end is provided with internal thread, and inner fastening plug screw 8 compresses controlled circulation valve module with the screw-internal thread fit of central tube 7.Thus the fixing apical position of controlled flowing valve in central tube 7.As shown in Figure 2, described controlled circulation valve module comprises internal end cover nut 9, rotary valve cover 10, spool 11, Compress Spring 12 and valve shell 13; Valve shell 13 endoporus installs Compress Spring 12, spool 11 and rotary valve cover 10 from down to up successively, valve shell 13 endoporus upper end is provided with internal thread, and internal end cover plug screw 9 and the screw-internal thread fit of valve shell 13 compress rotary valve cover 10, spool 11 and Compress Spring 12.The effect of Compress Spring 12 can control spool 11 and rotary valve cover 10 and contact and do not loosen, in time depressing Compress Spring 12, rotary valve cover 10 can produce gap with inner fastening plug screw 8, thus reaches the effect that can operate rotary valve cover 10.
Spool 11 is provided with limited support bar, and limited support bar is located in Compress Spring 12, the stroke that restriction spool 11 moves down, and because of pressing down rotary valve cover 10, spool 11 depressed position can not be caused excessive, also play certain support limit effect to spring 12.
Spool 11 and rotary valve cover 10 all adopt doubled via design, and this design can not affect the closing function of controlled circulation valve while augmented flow.Described rotary valve cover 10 has spanner screens.90 degree can be turned between rotary valve cover 10 by a special spanner, just can the controlled circulation valve module of switch.The outer operating personnel of well carries out the clamping of the spanner screens to rotary valve cover 10 by drilling rod, such as special spanner can be an outside control lever, stretches into carry out revolution switch to rotary valve cover 10 from outside.
Positioner is provided with between described central tube 7 and valve shell 13.The concrete position contacted with valve shell 13 below central tube 7 endoporus is provided with snap ring and fixture block in ring-type, valve shell 13 is provided with bayonet socket, the position that snap ring prevents valve shell 13 from moving down, bayonet socket is stuck in fixture block, the rotation of limiting valve body shell 13.Also can not down move while namely making controlled flowing valve not rotate motion in central tube 7.
Described central tube 7 cylindrical overlaps from down to up successively inferior pyramidal pressure ring 6, lower expansion slips 1, packing element 2, upper expansion slips 5 and upper conical pressure ring 3; Inferior pyramidal pressure ring 6 is stuck in central tube 7 bottom, concrete central tube 7 lower end cylindrical is provided with annular boss, inferior pyramidal pressure ring 6 is stuck on annular boss, central tube 7 upper end is provided with external screw thread, and end cover nut 4 coordinates the upper conical pressure ring 3 compressing central tube 7 overcoat, upper expansion slips 5, packing element 2, lower expansion slips 1 and inferior pyramidal pressure ring 6 with external screw thread.
Described end cover nut 4 upper end-face edge is provided with spanner bayonet socket.A front end is adopted to have the special tool wrench of claw, rotating end cap nut 4, under the acting in conjunction of annular boss, upper conical pressure ring 3 and inferior pyramidal pressure ring 6 are mobile in opposite directions compresses upper expansion slips 5 and lower expansion slips 1, and by upper expansion slips 5 and lower expansion slips 1, pressure is passed to packing element assembly 2; Upper expansion slips 5 and lower expansion slips 1 oneself have certain coefficient of elasticity, and the coefficient of elasticity of packing element assembly 2 is greater than expansion slips 5 and lower expansion slips 1, and has sealing function, and friction factor is also higher.Packing element assembly 2 is made up of elastomeric material, and be squeezed backward outer expansion, and external diameter becomes large, and jam-pack hole, realizes the basic function of bridging plug.Thus reach the effect in Seal Oil gas well hole; When needs open and close oil gas packing time, then live rotary valve cover 10 also to the active force that its direction is downward by slip, power passes on Compress Spring 12 by spool 11, make Compress Spring 12 that compressive strain occur, now, rotary valve cover 10 and internal end cover nut 9 produce gap, rotate, then realize the open and close operation of controlled flowing valve to rotary valve cover 10.Solve existing bridging plug poor reliability simply and easily, the life-span is short, two-wayly bears the low problem of compressed capability, is specially adapted to oil-gas exploration and development packing operation.
In addition, the lower end of described central tube 7 is taper, and is designed with multiple radial groove.This design facilitates whole device to go deep into down-hole and carries out operation, do not need additionally to carry out bore operation.Simultaneously overall structure can reduce ambient exterior atmospheric pressure and temperature to the impact of bridging plug function, reaches high-precision operation, due to bottom taper, without the need to carrying out the operation of unnecessary brill plug, overall operation expense is lower, and efficiency is high, because bridging plug adopts the two pressure ring design of dual-grip, global reliability is higher.Simultaneously also for rotating end cap nut 4 provides reverse support force.
Adopt the bridging plug involved by this utility model, complicated underground work can be adapted to, and the outer dismounting of well can be carried out, under guaranteeing the prerequisite of stability and reliability, ensure that the convenient, flexible of work; When needs carry out packing, by long drill pipe instrument, rotary valve cover is pressed down, when produce mechanical force reach make spring generation compressive strain time, namely can rotate rotary valve cover, make packing switch realize switching operations, structure is simple; By this apparatus structure, solve existing bridging plug poor reliability, the life-span is short, two-wayly bears the low problem of compressed capability, is specially adapted to oil-gas exploration and development packing operation.
The above; be only the utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (8)
1. a removable bridging plug, it is characterized in that, comprise central tube (7), inferior pyramidal pressure ring (6), lower expansion slips (1), packing element (2), upper expansion slips (5), upper conical pressure ring (3), end cover nut (4) and controlled circulation valve module;
Described central tube (7) cylindrical overlaps from down to up successively inferior pyramidal pressure ring (6), lower expansion slips (1), packing element (2), upper expansion slips (5) and upper conical pressure ring (3); Inferior pyramidal pressure ring (6) is stuck in central tube (7) bottom, central tube (7) upper end is provided with external screw thread, and end cover nut (4) coordinates the upper conical pressure ring (3), upper expansion slips (5), packing element (2), lower expansion slips (1) and the inferior pyramidal pressure ring (6) that compress central tube (7) overcoat with external screw thread;
Controlled circulation valve module is established in described central tube (7); Described end cover nut (4) upper end-face edge is provided with spanner bayonet socket.
2. removable bridging plug according to claim 1, it is characterized in that, described controlled circulation valve module comprises internal end cover nut (9), rotary valve cover (10), spool (11), Compress Spring (12) and valve shell (13);
Valve shell (13) endoporus installs Compress Spring (12), spool (11) and rotary valve cover (10) from down to up successively, valve shell (13) endoporus upper end is provided with internal thread, and internal end cover plug screw (9) and the screw-internal thread fit of valve shell (13) compress rotary valve cover (10), spool (11) and Compress Spring (12).
3. removable bridging plug according to claim 2, is characterized in that, is provided with positioner between described central tube (7) and valve shell (13).
4. removable bridging plug according to claim 2, is characterized in that, described rotary valve cover (10) has spanner screens.
5. removable bridging plug according to claim 2, is characterized in that, described spool (11) is provided with limited support bar.
6. removable bridging plug according to claim 2, is characterized in that, described spool (11) and rotary valve cover (10) are equipped with doubled via.
7. the removable bridging plug according to claim 1,2,3,4,5 or 6, it is characterized in that, described central tube (7) upper end is provided with internal thread, and inner fastening plug screw (8) compresses controlled circulation valve module with the screw-internal thread fit of central tube (7).
8. the removable bridging plug according to claim 1,2,3,4,5 or 6, is characterized in that, the lower end of described central tube (7) is taper, and is designed with multiple radial groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520790144.1U CN205036342U (en) | 2015-10-12 | 2015-10-12 | Removable bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520790144.1U CN205036342U (en) | 2015-10-12 | 2015-10-12 | Removable bridging plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205036342U true CN205036342U (en) | 2016-02-17 |
Family
ID=55295251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520790144.1U Expired - Fee Related CN205036342U (en) | 2015-10-12 | 2015-10-12 | Removable bridging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205036342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182702A (en) * | 2022-07-07 | 2022-10-14 | 太原科技大学 | Degradable bidirectional slip pressure abutment bridge plug |
-
2015
- 2015-10-12 CN CN201520790144.1U patent/CN205036342U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182702A (en) * | 2022-07-07 | 2022-10-14 | 太原科技大学 | Degradable bidirectional slip pressure abutment bridge plug |
| CN115182702B (en) * | 2022-07-07 | 2023-03-10 | 太原科技大学 | Degradable bidirectional slip pressure abutment bridge plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20181012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |