CN205743820U - A kind of down-hole plugging device - Google Patents
A kind of down-hole plugging device Download PDFInfo
- Publication number
- CN205743820U CN205743820U CN201620420204.5U CN201620420204U CN205743820U CN 205743820 U CN205743820 U CN 205743820U CN 201620420204 U CN201620420204 U CN 201620420204U CN 205743820 U CN205743820 U CN 205743820U
- Authority
- CN
- China
- Prior art keywords
- tubing string
- sealing
- inner tube
- fuel feed
- feed hole
- 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.)
- Active
Links
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model discloses a kind of down-hole plugging device, sealing projection seat and the positive stop lug boss with sealing surface is set in tubing string, it is positioned at the tubing string cooperation above sealing projection seat and insert pump is installed, the sealing surface of the seal boss that insert pump is arranged matches with the sealing surface sealing projection seat in tubing string, it is positioned on the tubing string tube wall below positive stop lug boss and outer fuel feed hole is set, coordinate in this section of tubing string and inner tube is installed, inner pipe wall arranges the interior fuel feed hole corresponding with the outer fuel feed hole of tubing string, it is positioned on the inner pipe wall of inner tube fuel feed hole bottom and sealed groove is set, the sealing ring coordinated with tubing string inner wall sealing is installed in sealed groove, the upper end of inner tube is connected with insert pump by on-off connector, the ferrule of tubing string lower end.It is simple and reasonable, dependable performance, it is possible to achieve actuating oil-pumping unit with pressure, the workover treatment of oil pipe, can the most repeatedly block down-hole pressure, it is achieved safe efficient, environmental protection, production energy-saving.
Description
Technical field
This utility model relates to oil field oil, casing operation instrument, belong to can blocking pipe, the device of isolation pipe external and internal pressure, particularly a kind of down-hole plugging device.
Background technology
During the production of the various well in oil field (such as oil well, well, steam injection well etc.) or well workover, it is sometimes necessary to blocking pipe, completely cut off the inside and outside pressure source of pipeline.As:
1, during well workover, need to block oil pipe lower end, it is to avoid in work progress, down-hole medium sprays, and causes energy waste, environmental pollution, or security incident.
Requirements above can be met currently without similar products, generally use well killing fluid during well workover, pour in oil pipe, limit down-hole pressure.Duty cycle is long, and cost is high.
2, for insert pump producing well, before lower pump, if can first suppress, the overall tightness of the test each junction point of tubing string, need first to block oil pipe lower end.And currently without this product, need rod type pump and rod string to suppress again after transferring, if it find that leakage problem is it is necessary to propose rod string, reintroduce tubing string, cause the duplication of labour.
Utility model content
The purpose of this utility model is to provide a kind of down-hole plugging device, and it is simple and reasonable, dependable performance, it is possible to achieve actuating oil-pumping unit with pressure, the workover treatment of oil pipe, can the most repeatedly block down-hole pressure, it is achieved safe efficient, environmental protection, production energy-saving.
The purpose of this utility model is achieved in that a kind of down-hole plugging device, sealing projection seat and the positive stop lug boss with sealing surface is set in tubing string, it is positioned at the tubing string cooperation above sealing projection seat and insert pump is installed, the sealing surface of the seal boss that insert pump is arranged matches with the sealing surface sealing projection seat in tubing string, it is positioned on the tubing string tube wall below positive stop lug boss and outer fuel feed hole is set, coordinate in this section of tubing string and inner tube is installed, inner pipe wall arranges the interior fuel feed hole corresponding with the outer fuel feed hole of tubing string, it is positioned on the inner pipe wall of inner tube fuel feed hole bottom and sealed groove is set, the sealing ring coordinated with tubing string inner wall sealing is installed in sealed groove, the upper end of inner tube is connected with insert pump by on-off connector, the ferrule of tubing string lower end.
Tubing string upper/lower terminal of the present utility model is all connected with oil pipe, and the oil pipe end plug of bottom is shut.The internal limited location step of the oil pipe being connected with tubing string upper end, limits and carries position in inner tube.Limited step top has sealing surface can coordinate with the sealing surface outside insert pump, it is achieved sealing function；Inner tube top and on-off connector bottom are fixed together, and insert pump bottom is fixed together with on-off connector top.
Operation principle of the present utility model:
1, during oil recovery, allow plugging device be in open mode, the fluid outside tubing string can enter, inside and outside ring can by oil-in go out as, can normally pump；
2, before well workover, will carry in inner tube, sealing ring at two in inner tube, when tubing string oil-in both sides, plugging device is closed, the inside and outside isolation of tubing string, after pressure testing checking sealing, can carry out on carry the work-over operations such as oil pipe；
3, when tubing string is installed, plugging device is in sealed condition, tubing string installs, it is possible to pressure testing, after checking sealing is qualified, then transfers rod string.
The good effect that this utility model produces:
1, during open mode, passage, in side, is not limited by tubing string diameter, and aisle spare can design larger, it is ensured that unimpeded；
2, during sealed condition, inner tube stress balance in the axial direction, plugging effect is reliable and stable；
3, it is achieved safe efficient, environmental protection, production energy-saving.
This utility model is simple and reasonable, dependable performance, it is achieved that actuating oil-pumping unit with pressure, the workover treatment of oil pipe, the most repeatedly blocks down-hole pressure, it is achieved that safe efficient, environmental protection, production energy-saving.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model will be further described, and Fig. 1 is this utility model sealed condition status architecture schematic diagram, and Fig. 2 is this utility model open mode structural representation.
Detailed description of the invention
nullA kind of down-hole plugging device，Such as Fig. 1、Shown in Fig. 2，Sealing projection seat 7 and the positive stop lug boss 8 with sealing surface is set in tubing string 2，It is positioned at tubing string 2 cooperation above sealing projection seat 7 and insert pump 9 is installed，The sealing surface of the seal boss 6 that insert pump 9 is arranged matches with the sealing surface sealing projection seat 7 in tubing string 2，It is positioned on the tubing string tube wall below positive stop lug boss 8 and outer fuel feed hole 3 is set，Coordinate in this section of tubing string and inner tube 1 is installed，Inner tube 1 tube wall arranges the interior fuel feed hole 4 corresponding with the outer fuel feed hole 3 of tubing string 2，It is positioned on inner tube 1 tube wall of inner tube fuel feed hole 4 bottom and sealed groove is set，The sealing ring 5 coordinated with tubing string 2 inner wall sealing is installed in sealed groove，The upper end of inner tube 1 is connected with insert pump 9 by on-off connector 10，The ferrule of tubing string 2 lower end.The quantity of sealed groove is 1-5.Sealing ring 5 is flexible wear sealing ring.
Installation tubing string and rod string procedure declaration:
One, oil pipe bottom plug is shut.Inner tube top and on-off connector bottom are fixed together, and inner tube and sealing ring are assembled in tubing string, is in sealed condition.At this moment it is in sealed condition bottom oil pipe, no killing well can be carried out and transfer the workover treatment of roofbolt.
Two, the tubing string that limited step, sealing surface, top are connected, transfer successively, until tubing string installs；
Three, insert pump bottom is fixed together with on-off connector top, and on-off connector top, insert pump, rod string are installed successively；
Four, after on-off connector upper and lower engages, continue to transfer rod string, until the sealing surface of insert pump contacts with the sealing surface of tubing string.Sealing surface is spacing by insert pump, it is achieved the upper and lower sealing of annular chamber between rod string and oil pipe.Inner tube is promoted by insert pump with sealing ring simultaneously, moves down into open mode.
Five, adjust dead space, rod string installs；Oil pumping can be started.
On carry rod string and tubing string process is just the opposite, when on-off connector upper and lower separates, inner tube by mention sealed condition.At this moment it is in sealed condition bottom oil pipe, the workover treatment of shadoof post on no killing well can be carried out.
Claims (3)
- null1. a down-hole plugging device，It is characterized in that: sealing projection seat (7) and the positive stop lug boss (8) with sealing surface is set in tubing string (2)，Tubing string (2) cooperation being positioned at sealing projection seat (7) top is installed with insert pump (9)，The sealing surface of the seal boss (6) that insert pump (9) is arranged matches with the sealing surface sealing projection seat (7) in tubing string (2)，It is positioned on the tubing string tube wall of positive stop lug boss (8) lower section and outer fuel feed hole (3) is set，Coordinate in this section of tubing string and inner tube (1) is installed，Inner tube (1) tube wall arranges the interior fuel feed hole (4) corresponding with the outer fuel feed hole (3) of tubing string (2)，It is positioned on inner tube (1) tube wall of inner tube fuel feed hole (4) bottom and sealed groove is set，The sealing ring (5) coordinated with tubing string (2) inner wall sealing is installed in sealed groove，The upper end of inner tube (1) is connected with insert pump (9) by on-off connector (10)，The ferrule of tubing string (2) lower end.
- A kind of down-hole plugging device the most according to claim 1, is characterized in that: the quantity of sealed groove is 1-5.
- A kind of down-hole plugging device the most according to claim 1, is characterized in that: sealing ring (5) is flexible wear sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620420204.5U CN205743820U (en) | 2016-05-11 | 2016-05-11 | A kind of down-hole plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620420204.5U CN205743820U (en) | 2016-05-11 | 2016-05-11 | A kind of down-hole plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205743820U true CN205743820U (en) | 2016-11-30 |
Family
ID=57367826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620420204.5U Active CN205743820U (en) | 2016-05-11 | 2016-05-11 | A kind of down-hole plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205743820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252678A (en) * | 2016-12-28 | 2018-07-06 | 克拉玛依胜利高原机械有限公司 | A kind of down-hole plugging device of uncoupling plunger tubing pump snubbing serving |
-
2016
- 2016-05-11 CN CN201620420204.5U patent/CN205743820U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252678A (en) * | 2016-12-28 | 2018-07-06 | 克拉玛依胜利高原机械有限公司 | A kind of down-hole plugging device of uncoupling plunger tubing pump snubbing serving |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107366510A (en) | A kind of down-hole plugging device and actuating oil-pumping unit with pressure, the workover treatment technology of oil pipe | |
| CN204311997U (en) | A kind of pressure break reverse circulation valve | |
| CN201730579U (en) | High-temperature resistant well control device for double-pipe operation in horizontal wells | |
| CN205743820U (en) | A kind of down-hole plugging device | |
| CN203626722U (en) | Sealing and isolating type cementing device | |
| CN208431479U (en) | A kind of oil development pipe connecting structure | |
| CN201778738U (en) | Energy storage pressure stabilizing controller of annular preventer | |
| CN204062272U (en) | Directly-inserted quick quick coupling | |
| CN206016755U (en) | A kind of sucker rod pump snubbing serving down-hole plugging device | |
| CN103452496B (en) | Integral type of adopting thick oil thermal extraction note automatically switches and produces joint | |
| CN202946094U (en) | Double-power-source packer for air-tight seal detection of oil sleeve | |
| CN202451474U (en) | Pressure reduction air extractor for oil well casing | |
| CN204457562U (en) | Shaft collar | |
| CN204807289U (en) | Leak detection device is suppressed at special cooler tube bank scene | |
| CN206655676U (en) | A kind of down-hole plugging device of uncoupling plunger tubing pump snubbing serving | |
| CN205805497U (en) | Enclosed compression packing element sealing unit | |
| CN205135547U (en) | Sleeve pipe gas automatic control device | |
| CN108252678A (en) | A kind of down-hole plugging device of uncoupling plunger tubing pump snubbing serving | |
| CN203594402U (en) | Oil tube plugging device | |
| CN206016756U (en) | A kind of down-hole plugging device of sleeve pipe snubbing serving method | |
| CN207813568U (en) | A kind of detachable bridge plug | |
| CN105952410A (en) | Underground blockage device of casing pressure balanced working method | |
| CN204163673U (en) | A kind of well mouth sealing device growing shutdown pumpingh well | |
| CN201867287U (en) | Sealing detection device for threads on pipe fittings in pipeline | |
| CN205027518U (en) | Anti - downhole tool cracking pressure testing arrangement that circulates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |