CN201843571U - Oil drainage type packer - Google Patents
Oil drainage type packer Download PDFInfo
- Publication number
- CN201843571U CN201843571U CN2010206051023U CN201020605102U CN201843571U CN 201843571 U CN201843571 U CN 201843571U CN 2010206051023 U CN2010206051023 U CN 2010206051023U CN 201020605102 U CN201020605102 U CN 201020605102U CN 201843571 U CN201843571 U CN 201843571U
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- packer
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Abstract
The utility model relates to an oil drainage type packer which is applied to the technical field of heavy oil exploitation of oilfields. The upper end of an upper joint is sheathed with a connecting sleeve, and the upper joint is fixed to the connecting sleeve through unsealing pins. The lower end of the connecting sleeve is connected with an outer pipe, and an annular oil drainage channel is formed between the outer pipe and a center pipe of the lower part of the upper joint. A rubber barrel and a distance ring are sheathed on the outer wall of the outer pipe, the lower end of the center pipe of the lower part of the upper joint is connected with a cone, and the lower end of the oil drainage channel is communicated with an annular groove of the upper end of the cone. The outer wall of the cone is provided with a liquid outlet hole, the outer wall of the upper end of the cone is connected with a connecting cover through screw threads, and the upper end surface of the connecting cover is pressed on the lower end surface of the rubber barrel. The outer wall of the lower end of the cone is provided with a track groove, and a clamp and an annular wiper block are sheathed on the outer wall of the lower end of the cone. The oil drainage type packer has the effects: during lifting unsealing, the oil drainage channel can enable upper liquid pressure and lower liquid pressure of the packer to be balanced, and the lifting unsealing force is reduced; the oil drainage type packer applied in a large-drift-diameter cased well can successfully solve the problem that an oil pumping rod is broken; and the packer can be unsealed under the condition that the oil pipe has no channel.
Description
Technical field
The utility model relates to oil-field thick-oil production technique field, and particularly a kind of downhole packer is gone up a kind of draining type packer.
Background technology
At present, the cold artificial lift employing enclosed annular space of adopting of deep-layer heavy crude (reservoir buried depth is more than 2800m) is mixed rare viscosity reduction lifting technology, uses the supporting annular space of solid sucker rod column system to mix rare technology, can prolong oil well repair free period, reduces the upkeep operation cost.General lifting technology tubing string uses conventional Y211 packer (standard commonly used is Y211-148) as annular space card envelope instrument, realizes mixing rare viscosity reduction lifting on the pump.Packer is a kind of special downhole tool of field produces, is used for packing oil jacket annular space.This tool performance is reliable, good seal, yet open under the situation of inefficacy in that rod parting or tubing pump bleeder take place because casing inner diameter is big, well depth (the packer degree of depth is below 2400m), pressure reduction is bigger up and down for packer, on put forward the deblocking difficulty.Especially under the relatively poor situation of stratum feed flow, owing to be subjected to the restriction of oil pipe tensile strength and equipment lifting ability, carry deblocking Y211 packer on can't be directly.Usually adopt and salvage sucker rod, rod-type pumping unit is proposed pump seat, set up pressure balance on the packer, carry deblocking on can be smoothly.And, then adopt the gaslift mode for salvaging under the sucker rod situation, and reduce head of liquid in the oil jacket, carry load on alleviating, so that realize deblocking.When above-mentioned situation can not deblocking, must adopt the heavy repair task power-equipment, adopt technological measure deblocking packers such as back-off unfreezing, not only increase operating cost, and prolonged duty cycle, influence crude output.
The utility model content
The purpose of this utility model is: a kind of draining type packer is provided, can packing sleeve pipe with relevant between annular space, when overcoming mechanical packer card oil sealing layer top, packer does not have (disconnected bar of sucker rod pump or pipe plug) under the draining passage situation up and down, on carry oil pipe deblocking packer difficult problem, thereby shorten duty cycle, reduce operating cost, increase crude output.
The technical solution adopted in the utility model is: the draining type packer, mainly form by top connection, packing element, spacer ring, cone, slips, wiper block, deblocking pin, adapter sleeve, outer tube, connection cover and lower contact, there is internal thread the top connection upper end, can connect the top oil pipe; It is characterized in that: central tube is arranged at the bottom of top connection; On the outer wall of top connection upper end, be with adapter sleeve, pass through the deblocking dowel fixes between top connection and the adapter sleeve; In the adapter sleeve lower end internal thread is arranged, the lower end screw thread of adapter sleeve is connected with outer tube, and outer tube forms annular draining passage in the outside of top connection lower central pipe between outer tube and the top connection lower central pipe; On the outer wall of outer tube, be with packing element and spacer ring; There is internal thread lower end at top connection lower central pipe, the lower end of the top connection lower central pipe cone that is threaded, and cone has centre bore for the cylinder bodily form, and there are the groove of annular, the lower end of draining passage and cone top ring connected in star UNICOM in the cone upper end; On the outer wall of cone, fluid hole is arranged, fluid hole and cone top ring connected in star UNICOM.The upper end outer wall thread of cone connects one and connects cover, connects cover and is annular, and the upper end that connects cover is enclosed within on the outer wall of outer tube lower end, connects the upper surface of cover and the lower surface of packing element and compresses; On the outer wall of the lower end of cone rail groove is arranged, rail groove has long rail groove and short rail groove; On the outer wall of the lower end of cone, be with slips and annular wiper block; Slips and annular wiper block can slide on the outer wall of the lower end of cone.The structure of slips, annular wiper block and rail groove is a structure commonly used on the downhole tool, and those skilled in the art can design.Lower end in cone is connected with lower contact, and there is external screw thread the lower contact lower end, can be connected with the bottom oil pipe.
The beneficial effects of the utility model: the utility model draining type packer, this instrument have Y211 packer repertoire, and on when carrying deblocking, the standby sealing mechanism draining of separating can be set up packer fluid pressure balance up and down in the road, puies forward deblocking power in the minimizing.This instrument replaces conventional Y211 packer, uses successfully to solve the disconnected bar of sucker rod in big latus rectum cased well, and oil pipe does not have a passage situation lower packet deblocking difficult problem, thereby shortens duty cycle, reduces operating cost.
The draining type packer is adapted to formation testing by layer, oil recovery, water detection, water blockoff, thickened oil recovery technology.It is big that packer sealing bears pressure reduction, satisfies temperature in wellbore and the requirement of operation liquid temp, and the while is not subjected to contain in the annulus fluid impurity obstruction and influences the packer deblocking.
Description of drawings
Fig. 1 is the utility model draining type packer construction generalized section.
Among the figure, 1. top connection, 2. packing element, 3. spacer ring, 4. cone, 5. slips, 6. wiper block, 7. rail groove, 8. deblocking pin, 9. adapter sleeve, 10. draining passage, 11. outer tubes, 12. connect cover, 13. fluid holes, 14. lower contacts.
The specific embodiment
Embodiment 1: with a draining type packer is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model draining type packer mainly is made up of top connection 1, packing element 2, spacer ring 3, cone 4, slips 5, wiper block 6, deblocking pin 8, adapter sleeve 9, outer tube 11, connection cover 12 and lower contact 14.There is internal thread top connection 1 upper end.Central tube is arranged at the bottom of top connection 1.On top connection 1 upper end outer wall, be with an annular adapter sleeve 9, be fixed together by two deblocking pins 8 between top connection 1 and the adapter sleeve 9.In adapter sleeve 9 lower ends internal thread is arranged, the lower end screw thread of adapter sleeve 9 is connected with an outer tube 11, and outer tube 11 forms an annular draining path 10 in the outside of top connection 1 lower central pipe between outer tube 11 and the top connection 1 lower central pipe.On the outer wall of outer tube 11, be with three packing elements 2 and two spacer rings 3; There is internal thread lower end at top connection 1 lower central pipe, the lower end of the top connection 1 lower central pipe cone 4 that is threaded, and cone 4 has centre bore for the cylinder bodily form, and there are the groove of annular, the lower end of draining path 10 and cone 4 top ring connected in star UNICOMs in cone 4 upper ends.A fluid hole 13 is radially arranged, fluid hole 13 and cone 4 top ring connected in star UNICOMs on the outer wall of cone 4.The upper end outer wall thread of cone 4 connects one and connects cover 12, and connecting cover 12 is annular, and the upper end that connects cover 12 is enclosed within on the outer tube 11 lower end outer walls, connects the upper surface of cover 12 and the lower surface of packing element 2 and compresses.On the outer wall of the lower end of cone 4 rail groove 7 is arranged, rail groove 7 has long rail groove and short rail groove.On the outer wall of the lower end of cone 4, be with slips 5 and an annular wiper block 6.Slips 5 and annular wiper block 6 can slide on the outer wall of the lower end of cone 4.Be connected with a lower contact 14 in the lower end of cone 4, there is external screw thread lower contact 14 lower ends.
The operating principle of summary draining type packer.Consult Fig. 1.Draining type packer and tubing string link together, by the designing requirement G.I.H, when needs set, the upper lifting pipe post, and then transfer, slips 5 is close to internal surface of sleeve pipe under the effect of spring, cause slips 5 and internal surface of sleeve pipe friction, slips 5 and annular wiper block 6 move along rail groove 7, when the top dead-centre that slips into short rail groove.So slips 5 is strutted by cone 4, slips 5 is fixed on the inwall of sleeve pipe, reaches the permanent position.Top connection 1 simultaneously, the together descending compression packing element 2 of outer tube 11 make packing element 2 diameters become big, play the effect of annular space between sealing oil pipe and the sleeve pipe.When the needs deblocking, top connection 1, outer tube 11 are up together, and packing element 2 restores to the original state and deblocking.If pressure reduction is excessive up and down for packer during deblocking, then cut off deblocking pin 8, move in the top connection 1, outside liquid enters the draining path 10 from draining path 10 top inlet, flow out by fluid hole 13, thereby set up packer fluid pressure balance up and down, enter conventional deblocking program, put forward the deblocking success rate in the assurance.
Claims (1)
1. draining type packer, mainly be made up of top connection (1), packing element (2), spacer ring (3), cone (4), slips (5), wiper block (6), deblocking pin (8), adapter sleeve 9, outer tube (11), connection cover (12) and lower contact (14), there is internal thread top connection (1) upper end; It is characterized in that: central tube is arranged at the bottom of top connection (1); On the outer wall of top connection (1) upper end, be with adapter sleeve (9), fixing between top connection (1) and the adapter sleeve (9) by deblocking pin (8); In adapter sleeve (9) lower end internal thread is arranged, the lower end screw thread of adapter sleeve (9) is connected with outer tube (11), and outer tube (11) forms annular draining passage (10) in the outside of top connection (1) lower central pipe between outer tube (11) and top connection (1) the lower central pipe; On the outer wall of outer tube (11), be with packing element (2) and spacer ring (3); There is internal thread lower end at top connection (1) lower central pipe, the lower end of top connection (1) the lower central pipe cone (4) that is threaded, cone (4) has centre bore for the cylinder bodily form, and there are the groove of annular, the lower end of draining passage (10) and cone (4) top ring connected in star UNICOM in cone (4) upper end; Fluid hole (13) is arranged, fluid hole (13) and cone (4) top ring connected in star UNICOM on the outer wall of cone (4); The upper end outer wall thread of cone (4) connects one and connects cover (12), and connecting cover (12) is annular, and the upper end that connects cover (12) is enclosed within on the outer wall of outer tube (11) lower end, connects the upper surface of cover (12) and the lower surface of packing element (2) and compresses; Rail groove (7) is arranged on the lower end outer wall of cone (4), and rail groove (7) has long rail groove and short rail groove; On the lower end outer wall of cone (4), be with slips (5) and annular wiper block (6); Be connected with lower contact (14) in the lower end of cone (4), there is external screw thread lower contact (14) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206051023U CN201843571U (en) | 2010-11-11 | 2010-11-11 | Oil drainage type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206051023U CN201843571U (en) | 2010-11-11 | 2010-11-11 | Oil drainage type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843571U true CN201843571U (en) | 2011-05-25 |
Family
ID=44038464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206051023U Expired - Lifetime CN201843571U (en) | 2010-11-11 | 2010-11-11 | Oil drainage type packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843571U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134121A (en) * | 2015-08-21 | 2015-12-09 | 梁伟成 | Screw pump blowout prevention supporting slips anchoring tool |
| CN109025872A (en) * | 2018-09-20 | 2018-12-18 | 明士皓 | A kind of safe tripping in of oil production by layer packer and anti-pollution Refloatation method |
| CN109267954A (en) * | 2018-09-20 | 2019-01-25 | 明士皓 | The safe tripping in of oil production by layer packer and anti-pollution salvaging dual-purpose apparatus |
| CN109931024A (en) * | 2019-03-14 | 2019-06-25 | 河南福侨石油装备有限公司 | A kind of slideway compression packer |
-
2010
- 2010-11-11 CN CN2010206051023U patent/CN201843571U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134121A (en) * | 2015-08-21 | 2015-12-09 | 梁伟成 | Screw pump blowout prevention supporting slips anchoring tool |
| CN109025872A (en) * | 2018-09-20 | 2018-12-18 | 明士皓 | A kind of safe tripping in of oil production by layer packer and anti-pollution Refloatation method |
| CN109267954A (en) * | 2018-09-20 | 2019-01-25 | 明士皓 | The safe tripping in of oil production by layer packer and anti-pollution salvaging dual-purpose apparatus |
| CN109025872B (en) * | 2018-09-20 | 2020-11-03 | 徐州天骋智能科技有限公司 | Packer safe running and anti-pollution salvaging method for layered oil extraction |
| CN109267954B (en) * | 2018-09-20 | 2020-11-06 | 徐州企润食品有限公司 | Packer safety running and anti-pollution salvaging dual-purpose device for layered oil extraction |
| CN109931024A (en) * | 2019-03-14 | 2019-06-25 | 河南福侨石油装备有限公司 | A kind of slideway compression packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |
|
| CX01 | Expiry of patent term |