CN204283324U - Cementing packer - Google Patents
Cementing packer Download PDFInfo
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- CN204283324U CN204283324U CN201420749561.7U CN201420749561U CN204283324U CN 204283324 U CN204283324 U CN 204283324U CN 201420749561 U CN201420749561 U CN 201420749561U CN 204283324 U CN204283324 U CN 204283324U
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- cementing
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Abstract
The utility model relates to a kind of cementing packer, it comprises central tube (13), central tube (13) inside, lower end is provided with cementing piston (3), central tube lower linking tube (20) below is provided with cementing baffle plate (4), cementing is slidably fitted with for cap (5) in cementing baffle plate (4), cementing is provided with sealed steel ball (6) for cap (5) below, cementing is connected with cementing sleeve (7) for cap (5) lower end, steel ball stage clip (61) is provided with in cementing sleeve (7), cementing baffle plate (4) below is provided with the adapter sleeve (8) being connected to cementing baffle plate (4) bottom, cementing sleeve (7) below is provided with the cementing cap (9) being connected to adapter sleeve (8) lower end.Use its cementing plugging reliability high, one-way sealing good reliability, sets consequence pressure difference large.Its structure is simple, and it is large that packing element sets consequence pressure difference, can prevent the cement injecting oil reservoir from returning and tell return pipe post.
Description
Technical field
The utility model relates to petroleum tool, is specifically related to a kind of packer.
Background technology
Oil field in order to develop oil fields cost-effectively, carries out effective shutoff with regard to needs some high watercut layers after entering the exploitation later stage.One of method of shutoff is exactly inject cement to reservoir plugging, and in order to complete this purpose, the general cementing packer that uses forms flow string.But it is reliably not high enough that the existing packer with cementing function exists shutoff, one-way sealing poor reliability sets the shortcoming that consequence pressure difference is little, is unfavorable for injecting quantitative cement and reliable reservoir plugging in the oil reservoir of shutoff.
Summary of the invention
It is high that the purpose of this utility model is to provide a kind of shutoff reliability, one-way sealing good reliability, sets the cementing packer that consequence pressure difference is large.
Technical solution of the present utility model is: it comprises top connection, spring, anti-flushing well piston, central tube upper connecting tube, central tube, packing element assembly, shear sleeve, positioning piston, shearing ring, snap ring, thrust piston and central tube lower linking tube, central tube lower linking tube upper end inwall is axially connected with central tube lower end by internal thread, central tube lower end internal slide is provided with cementing piston, between cementing piston and central tube tube wall, radial direction is provided with cementing and cuts off pin, the back-off cup-shaped cementing baffle plate being arranged on central tube lower linking tube bottom by screw thread is provided with below central tube lower linking tube, in cementing baffle plate, the slid underneath of cementing baffle plate upper surface is provided with cementing for cap, cementing is for being provided with the sealed steel ball be sealed and matched mutually for cap end opening with cementing below cap, cementing is connected with for cap lower end and is connected to cementing for the cementing sleeve on cap outer wall by internal thread, be provided with upper end in cementing sleeve and push up the steel ball stage clip be pressed on sealed steel ball, be provided with below cementing baffle plate and cover on cementing sleeve outside, upper end is connected to the adapter sleeve of cementing baffle plate bottom by internal thread, be provided with upper end below cementing sleeve and be threaded connection cementing cap in adapter sleeve lower end, the lower end of steel ball stage clip is pressed on the inwall of cementing cap lower surface.
Technique effect of the present utility model is: use its cementing plugging reliability high, one-way sealing good reliability, sets consequence pressure difference large.Simply, it is large that packing element sets consequence pressure difference to its structure, and rapid closing passage after the one way valve of configuration injection cement can guarantee to inject cement to oil reservoir bottom packer, one-way sealing is reliable, can prevent the cement injected from returning and tell return pipe post.Inject after cement, can also backwash operation be carried out, in flow string, flows out from oil sets annular space injected clear water that can to remove cement residual, thus avoid oil jacket annular space enter cement and block packer.
This packer also has the advantage that low pressure (well-flushing process pressure) discharges, and packing element sealing is reliable, thus has saved the expense that configure dedicated cementing truck beats high pressure releasing packer, reduces cost of production.This packer can also on carry deblocking, deblocking success rate 100%.
Accompanying drawing explanation
Fig. 1 is the axial sectional view of the utility model embodiment.
Detailed description of the invention
As shown in Figure 1, it comprises top connection 1, spring 2, anti-flushing well piston 11, central tube upper connecting tube 12, central tube 13, packing element assembly 14, shear sleeve 15, positioning piston 16, shearing ring 17, snap ring 18, thrust piston 19 and central tube lower linking tube 20, central tube lower linking tube 20 upper end inwall is axially connected with central tube 13 lower end by internal thread, central tube 13 lower end internal slide is provided with cementing piston 3, between cementing piston 3 and central tube 13 tube wall, radial direction is provided with cementing and cuts off pin 31, the back-off cup-shaped cementing baffle plate 4 being arranged on central tube lower linking tube 20 bottom by screw thread is provided with below central tube lower linking tube 20, in cementing baffle plate 4, the slid underneath of cementing baffle plate 4 upper surface is provided with cementing for cap 5, cementing is for being provided with the sealed steel ball 6 be sealed and matched mutually for cap 5 end opening with cementing below cap 5, cementing is connected with for cap 5 lower end and is connected to cementing for the cementing sleeve 7 on cap 5 outer wall by internal thread, be provided with upper end in cementing sleeve 7 and push up the steel ball stage clip 61 be pressed on sealed steel ball 6, be provided with below cementing baffle plate 4 and cover on cementing sleeve 7 outside, upper end is connected to the adapter sleeve 8 of cementing baffle plate 4 bottom by internal thread, be provided with upper end below cementing sleeve 7 and be threaded connection cementing cap 9 in adapter sleeve 8 lower end, the lower end of steel ball stage clip 61 is pressed on the inwall of cementing cap 9 lower surface.
Cementing is cut off the outer wall that above pin 31, cementing piston 3 coordinates with central tube 13 slipper seal and is provided with seal groove and is provided with sealing ring 10.Cementing is circumferentially with multiple axially extending bore 51 for the position near its outer wall on the upper surface of the cementing baffle plate 4 above cap 5.Cementing is up-small and down-big inner conical surface for the end opening that cap 5 matches with sealed steel ball 6.The outer wall that cementing coordinates with cementing baffle plate 4 slipper seal for cap 5 is provided with seal groove and is provided with sealing ring 10.Cementing is provided with multiple radial direction through hole 71 for the sidewall of cementing sleeve 7 below cap 5.Cementing cap 9 wall portion between below cementing sleeve 7 lower end outside and adapter sleeve 8 is provided with multiple through hole 91.
It also comprises top connection overcoat 21, anti-flushing well piston jacket 22, shearing ring nut 23, thrust piston overcoat 24 and inner sleeve 25, the upper end of top connection overcoat 21 is sleeved on top connection 1 outside, the upper end of top connection overcoat 21 is connected with top connection 1 by internal thread, spring 2 is positioned at top connection overcoat 21 and is sleeved on top connection 1 outside, the upper end of central tube upper connecting tube 12 is connected by the lower end of outer end grain with top connection 1, the slid underneath sealing shroud that anti-flushing well piston 11 is positioned at spring 2 is contained in top connection overcoat 21 and is sleeved on top connection 1 and central tube upper connecting tube 12 outside, anti-flushing well piston jacket 22 is positioned at top connection overcoat 21 and is sleeved on central tube upper connecting tube 12 outside, upper end is axially connected with the lower end of anti-flushing well piston 11 by internal thread, the sealing mat 26 be sleeved on central tube upper connecting tube 12 is provided with between anti-flushing well piston jacket 22 lower surface and central tube upper connecting tube 12, central tube 13 is positioned at below central tube upper connecting tube 12, upper end is axially connected with central tube upper connecting tube 12 lower end by external screw thread, packing element assembly 14 is by the upper packing element 27 being sleeved on central tube outside from the top down in turn, upper dottle pin 28, middle packing element 29, lower dottle pin 32 and lower rubber cylinder 33 are formed, the slid underneath that shear sleeve 15 is positioned at lower rubber cylinder 33 is sleeved on central tube 13 outside, it is outside that positioning piston 16 slip cap is contained in central tube 13, the upper end of positioning piston 16 is enclosed within shear sleeve 15, between shear sleeve 15 and positioning piston 16, radial direction is provided with and sets pin 34, it is outside that shearing ring 17 slip cap is contained in central tube 13, the upper end of shearing ring 17 to be sleeved in positioning piston 16 and and between positioning piston 16 radial direction be provided with deblocking pin 35, shearing ring nut 23 is arranged on shearing ring 17 lower end by internal thread, snap ring 18 is positioned at the annular groove be sleeved on below positioning piston 16 on shearing ring nut 23, inner sleeve 25 is positioned at the below of shear sleeve 15, upper end slip cap is contained in positioning piston 16 outside and is enclosed within snap ring 18 and shearing ring nut 23 outside, the slid underneath that thrust piston 19 is positioned at inner sleeve 25 is sleeved on central tube 13 outside, the lower slide of inner sleeve 25 is sleeved on the outside, upper end of thrust piston 19, the lower end of thrust piston overcoat 24 is connected by the top axial of internal thread with central tube lower linking tube 20, middle part slip cap is contained on thrust piston 19, top slip cap is contained in the outside of inner sleeve 25, thrust piston overcoat 24 lower end is axially connected with central tube lower linking tube 20 upper end outer wall by internal thread.
Operating principle: after this packer is lowered into predetermined reservoir plugging, pressurization makes packer setting.Continuing pressurization makes cementing passage open, thus injects cement, shutoff high watercut layer.
Claims (8)
1. cementing packer, it comprises top connection (1), spring (2), anti-flushing well piston (11), central tube upper connecting tube (12), central tube (13), packing element assembly (14), shear sleeve (15), positioning piston (16), shearing ring (17), snap ring (18), thrust piston (19) and central tube lower linking tube (20), central tube lower linking tube (20) upper end inwall is axially connected with central tube (13) lower end by internal thread, it is characterized in that: central tube (13) lower end internal slide is provided with cementing piston (3), between cementing piston (3) and central tube (13) tube wall, radial direction is provided with cementing and cuts off pin (31), central tube lower linking tube (20) below is provided with back-off cup-shaped cementing baffle plate (4) being arranged on central tube lower linking tube (20) bottom by screw thread, the slid underneath of cementing baffle plate (4) interior cementing baffle plate (4) upper surface is provided with cementing for cap (5), cementing is provided with for cap (5) below the sealed steel ball (6) be sealed and matched mutually for cap (5) end opening with cementing, cementing is connected with for cap (5) lower end and is connected to cementing for the cementing sleeve (7) on cap (5) outer wall by internal thread, be provided with upper end in cementing sleeve (7) and push up the steel ball stage clip (61) be pressed on sealed steel ball (6), cementing baffle plate (4) below is provided with and covers on cementing sleeve (7) outside, upper end is connected to the adapter sleeve (8) of cementing baffle plate (4) bottom by internal thread, cementing sleeve (7) below is provided with upper end and is threaded connection cementing cap (9) in adapter sleeve (8) lower end, the lower end of steel ball stage clip (61) is pressed on the inwall of cementing cap (9) lower surface.
2. cementing packer as claimed in claim 1, is characterized in that described cementing is cut off the outer wall that above pin (31), cementing piston (3) coordinates with central tube (13) slipper seal and is provided with seal groove and is provided with sealing ring (10).
3. cementing packer as claimed in claim 1, is characterized in that the upper surface of described cementing for the cementing baffle plate (4) of cap (5) top is circumferentially with multiple axially extending bore (51) near the position of its outer wall.
4. cementing packer as claimed in claim 1, is characterized in that the end opening that described cementing matches with sealed steel ball (6) for cap (5) is up-small and down-big inner conical surface.
5. cementing packer as claimed in claim 1, is characterized in that described cementing is provided with seal groove for the outer wall that cap (5) coordinates with cementing baffle plate (4) slipper seal and is provided with sealing ring (10).
6. cementing packer as claimed in claim 1, is characterized in that described cementing is provided with multiple radial direction through hole (71) for the sidewall of cap (5) below cementing sleeve (7).
7. cementing packer as claimed in claim 1, is characterized in that cementing cap (9) wall portion between described cementing sleeve (7) lower end outside and adapter sleeve (8) below is provided with multiple through hole (91).
8. cementing packer as claimed in claim 1, it is characterized in that it also comprises top connection overcoat (21), anti-flushing well piston jacket (22), shearing ring nut (23), thrust piston overcoat (24) and inner sleeve (25), the upper end of top connection overcoat (21) is sleeved on top connection (1) outside, the upper end of top connection overcoat (21) is connected with top connection (1) by internal thread, spring (2) is positioned at top connection overcoat (21) and is sleeved on top connection (1) outside, the upper end of central tube upper connecting tube (12) is connected by the lower end of outer end grain with top connection (1), the slid underneath sealing shroud that anti-flushing well piston (11) is positioned at spring (2) is contained in top connection overcoat (21) and is sleeved on top connection (1) and central tube upper connecting tube (12) outside, anti-flushing well piston jacket (22) is positioned at top connection overcoat (21) and is sleeved on central tube upper connecting tube (12) outside, upper end is axially connected with the lower end of anti-flushing well piston (11) by internal thread, the sealing mat (26) be sleeved on central tube upper connecting tube (12) is provided with between anti-flushing well piston jacket (22) lower surface and central tube upper connecting tube (12), central tube (13) is positioned at central tube upper connecting tube (12) below, upper end is axially connected with central tube upper connecting tube (12) lower end by external screw thread, packing element assembly (14) is by the upper packing element (27) being sleeved on central tube outside from the top down in turn, upper dottle pin (28), middle packing element (29), lower dottle pin (32) and lower rubber cylinder (33) are formed, the slid underneath that shear sleeve (15) is positioned at lower rubber cylinder (33) is sleeved on central tube (13) outside, it is outside that positioning piston (16) slip cap is contained in central tube (13), the upper end of positioning piston (16) is enclosed within shear sleeve (15), between shear sleeve (15) and positioning piston (16), radial direction is provided with and sets pin (34), it is outside that shearing ring (17) slip cap is contained in central tube (13), the upper end of shearing ring (17) to be sleeved in positioning piston (16) and and between positioning piston (16) radial direction be provided with deblocking pin (35), shearing ring nut (23) is arranged on shearing ring (17) lower end by internal thread, snap ring (18) is positioned at positioning piston (16) below and is sleeved on annular groove on shearing ring nut (23), inner sleeve (25) is positioned at the below of shear sleeve (15), upper end slip cap is contained in positioning piston (16) outside and is enclosed within snap ring (18) and shearing ring nut (23) outside, the slid underneath that thrust piston (19) is positioned at inner sleeve (25) is sleeved on central tube (13) outside, the lower slide of inner sleeve (25) is sleeved on the outside, upper end of thrust piston (19), the lower end of thrust piston overcoat (24) is connected by the top axial of internal thread with central tube lower linking tube (20), middle part slip cap is contained on thrust piston (19), top slip cap is contained in the outside of inner sleeve (25), thrust piston overcoat (24) lower end is axially connected with central tube lower linking tube (20) upper end outer wall by internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749561.7U CN204283324U (en) | 2014-12-04 | 2014-12-04 | Cementing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749561.7U CN204283324U (en) | 2014-12-04 | 2014-12-04 | Cementing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283324U true CN204283324U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420749561.7U Active CN204283324U (en) | 2014-12-04 | 2014-12-04 | Cementing packer |
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| Country | Link |
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| CN (1) | CN204283324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869320A (en) * | 2016-09-23 | 2018-04-03 | 中国石油化工股份有限公司 | Anti- return of one kind tells flushing valve |
-
2014
- 2014-12-04 CN CN201420749561.7U patent/CN204283324U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869320A (en) * | 2016-09-23 | 2018-04-03 | 中国石油化工股份有限公司 | Anti- return of one kind tells flushing valve |
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| GR01 | Patent grant |