CN203362107U - Salvageable and drillable suspension bridge plug - Google Patents
Salvageable and drillable suspension bridge plug Download PDFInfo
- Publication number
- CN203362107U CN203362107U CN 201320456585 CN201320456585U CN203362107U CN 203362107 U CN203362107 U CN 203362107U CN 201320456585 CN201320456585 CN 201320456585 CN 201320456585 U CN201320456585 U CN 201320456585U CN 203362107 U CN203362107 U CN 203362107U
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- China
- Prior art keywords
- center pipe
- sub
- drillable
- bridge plug
- central tube
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a salvageable and drillable suspension bridge plug, which is mainly used for solving the problem that an existing bridge plug is easy to seal but difficult to unseal. The salvageable and drillable suspension bridge plug is characterized in that a main center pipe (1) is positioned in a subsidiary center pipe (2) and is connected with the subsidiary center pipe (2) through an unsealing pin (4); the subsidiary center pipe (2) is connected with a lower joint (3) through a screw thread; six breaches (5) are axially formed in the lower end of the subsidiary center pipe (2); an inner bench is arranged in the lower end of the subsidiary center pipe (2); an outer bench matched with the inner bench is arranged outside the lower end of the main center pipe (1). The salvageable and drillable suspension bridge plug has the characteristic of being easy to seal and unseal.
Description
Technical field
The utility model relates to a kind of oil field downhole tool, and especially the fishable and drillable formula hangs bridging plug.
Background technology
In the oil extraction in oil field field, bridging plug is important downhole tool.And the existing bridging plug of order is setting easy because reasons in structure exists, the problem of deblocking difficulty, affect oil recovery efficiency.
Summary of the invention
Setting easily in order to solve existing bridging plug, the problem of deblocking difficulty.The utility model provides a kind of fishable and drillable formula to hang bridging plug.It is setting easy that this fishable and drillable formula suspension bridging plug has, and deblocking also is easy to characteristics.
The technical solution of the utility model is: this fishable and drillable formula hangs bridging plug and comprises main central tube, sub-center pipe and lower contact.Main central tube is placed in the sub-center pipe, and be connected by the deblocking pin, the sub-center pipe is connected with lower contact by screw thread, and axially there are 6 gap sub-center pipe lower end, the sub-center pipe has inner step in lower end, and the outer stage matched with inner step is arranged outside main central tube lower end.
The utlity model has following beneficial effect: this fishable and drillable formula hangs bridging plug owing to adopting main central tube to be placed in the sub-center pipe, and be connected by the deblocking pin, the sub-center pipe is connected with lower contact by screw thread, axially there are 6 gap sub-center pipe lower end, the sub-center pipe has inner step in lower end, and the structure of the outer stage matched with inner step is arranged outside main central tube lower end.Utilize gap under deblocking pin, sub-center pipe and inner step, outer stage, make deblocking also easy.Thus this fishable and drillable formula hang bridging plug have setting easily, deblocking also is easy to characteristics.
the accompanying drawing explanation:
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is A-A sectional drawings in Fig. 1.
1-master's central tube in figure, 2-sub-center pipe, 3-lower contact, 4-deblocking pin, 5-gap.
the specific embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in accompanying drawing, this fishable and drillable formula hangs bridging plug and comprises main central tube 1, sub-center pipe 2 and lower contact 3.Main central tube 1 is placed in sub-center pipe 2, and be connected by deblocking pin 4, sub-center pipe 2 is connected with lower contact 3 by screw thread, axially there are 6 gap 5 sub-center pipe 2 lower ends, by gap 5, sub-center pipe 2 lower end diameter can be changed, become large or dwindle, the sub-center pipe has inner step in 2 lower ends, main central tube has the outer stage matched with inner step outside 1 lower end, that is to say that in sub-center pipe 2 lower ends be step hole, main central tube has annular boss outside 1 lower end, boss is placed in step hole, boss can block mutually with step hole, by preventing inner step and coordinating of outer stage that main central tube 1 breaks away from whole.Sub-center pipe 2 lower ends, by main central tube 1 distending, make sub-center pipe 2 outer screw threads be connected with lower contact 3.
When this fishable and drillable formula hangs the bridging plug deblocking, being lowered to fishing tool catches in fishing joint and carries, cutting off deblocking pin 4 makes to move on main central tube 1, because sub-center pipe 2 has axial gap 5, move on main central tube 1 sub-center pipe 2 lower end external diameters are shunk, the contraction of sub-center pipe 2 lower end external diameters breaks away from sub-center pipe 2 external screw threads and lower contact 3, and sub-center pipe 2 breaks away from and makes to move on sub-center pipe 2 with lower contact 3, finally makes on setting part to move to reach the deblocking purpose.Adopt once and to inject highly pressurised liquid from oil pipe and just can complete successively respectively that compression piston release, packing element are setting, slips anchoring, four activitiess of the deblocking of giving up.As run into long in the underground work time under drilling tool grind off and meet card portion and just can integral body pull out.
The setting top of compression piston that enters to compression piston central tube injection highly pressurised liquid by top connection, when compression piston reaches the first aim value in the effect downforce of liquid, promote movable sleeving and cut off release pin, promote the sand control cone and drive slips shelves ring, jump ring, upper cone, the slips central tube, slips, the slips fairlead, return spring, lower cone, the packing element central tube, the packing element jump ring, card tooth along the sub-center pipe travels forward, make packing element, the purpose with bobbin seal is got in limit packing element and the compression of middle packing element, when the packing element compression pressure reaches the second target value, the slips release pin is cut off, make upper cone and lower cone relative motion, the slips enlarged-diameter is anchored on sleeve pipe, the pin of giving up when operating pressure reaches the 3rd desired value is cut off, the part of giving up breaks away from successfully.
This fishable and drillable formula hangs the bridging plug major function on existing bridging plug basis, and deblocking has partly been done to improvement, makes deblocking become easy.
Claims (1)
1. a fishable and drillable formula hangs bridging plug, comprise main central tube (1), sub-center pipe (2) and lower contact (3), it is characterized in that: main central tube (1) is placed in sub-center pipe (2), and be connected by deblocking pin (4), sub-center pipe (2) is connected with lower contact (3) by screw thread, axially there are 6 gap (5) sub-center pipe (2) lower end, sub-center pipe (2) has inner step in lower end, and main central tube (1) has the outer stage matched with inner step outside lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320456585 CN203362107U (en) | 2013-07-30 | 2013-07-30 | Salvageable and drillable suspension bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320456585 CN203362107U (en) | 2013-07-30 | 2013-07-30 | Salvageable and drillable suspension bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362107U true CN203362107U (en) | 2013-12-25 |
Family
ID=49809893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320456585 Expired - Fee Related CN203362107U (en) | 2013-07-30 | 2013-07-30 | Salvageable and drillable suspension bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362107U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939337A (en) * | 2018-01-12 | 2018-04-20 | 大庆市天德忠石油科技有限公司 | Hydraulic setting formula bridge plug |
| CN110821442A (en) * | 2019-12-02 | 2020-02-21 | 大庆益科石油科技开发有限公司 | Integral fishable and drillable bridge plug |
-
2013
- 2013-07-30 CN CN 201320456585 patent/CN203362107U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939337A (en) * | 2018-01-12 | 2018-04-20 | 大庆市天德忠石油科技有限公司 | Hydraulic setting formula bridge plug |
| CN107939337B (en) * | 2018-01-12 | 2018-08-07 | 大庆市天德忠石油科技有限公司 | Hydraulic setting formula bridge plug |
| CN110821442A (en) * | 2019-12-02 | 2020-02-21 | 大庆益科石油科技开发有限公司 | Integral fishable and drillable 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20160730 |