CN203655217U - Novel releasing packer - Google Patents
Novel releasing packer Download PDFInfo
- Publication number
- CN203655217U CN203655217U CN201320857095.XU CN201320857095U CN203655217U CN 203655217 U CN203655217 U CN 203655217U CN 201320857095 U CN201320857095 U CN 201320857095U CN 203655217 U CN203655217 U CN 203655217U
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- piston
- packing element
- inner core
- center tube
- cap
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Abstract
The utility model relates to a packer used for oilfield downhole operation, in particular to a novel releasing packer. The novel releasing packer is characterized in that an upper joint is connected with a piston and a pressure cap screw, an outer barrel of the piston is located under a pressure cap and is connected with the upper joint and the piston, a hole is formed in the lower portion of the outer barrel of the piston, an inner barrel of the piston is connected with the inner wall of the upper joint and the piston, a ball seat is arranged on the inner side of the inner barrel of the piston, a fishing head is connected to the lower side of the ball seat, the lower portion of the fishing head is arranged around an upper center tube, the lower portion of the upper center tube is connected with the inner side of an unblocking lock anchor, the outer side of the unblocking lock anchor is simultaneously connected with a lower center tube, and the lower center tube is connected with a lower joint. The novel releasing packer has a releasing function, so that the problems that a conventional packer having no releasing function needs to be added with a releasing device resulting in time-consuming operation, high labor intensity and the like are solved, waste of resources is reduced, and construction cost is lowered.
Description
Technical field
The utility model relates to a kind of packer for oilfield downhole operation, especially a kind of novel back-off packer.
Background technology
At present, implement zonal water plugging oil recovery technique, envelope is fallen high aquifer formation, is to control the effective way that well water rises.Zonal water plugging will adopt packer, and existing packer kind is more, but exist easy inefficacy, downslide, supporting capacity low, be constructed into the problems such as the low and deblocking of power is difficult.And in the oil extraction process tubular column in oil field, need regularly inspection pump, when inspection pump, propose tubing string, removing seal for packer, when lower subjob, must be lowered to new packer again, cause the wasting of resources, and workload is larger.
Summary of the invention
The purpose of this utility model is exactly that conventional packer easily lost efficacy in order to solve, downslide, supporting capacity are low, be constructed into that power is low, inspection pump difficulty, packer easily lost efficacy and the problem such as deblocking difficulty, and a kind of novel packer with the function of giving up is provided.
The technical scheme that the utility model provides is:
Novel back-off packer, top connection (1) is connected with piston (7), top connection (1) is connected with pressure cap (2) screw, piston urceolus (3) is positioned at pressure cap (2) below and is connected with top connection (1) and piston (7), piston urceolus (3) bottom has hole, piston inner core (4) is connected with top connection (1) inwall and piston (7), ball seat (6) is arranged on the inner side of piston inner core (4), the below of ball seat (6) is connected with fishing head (8), fishing head (8) bottom arranges around upper center tube (9), upper center tube (9) bottom is connected with deblocking break adrift (21) inner side, deblocking break adrift (21) outside connects lower center tube (23) simultaneously, lower center tube (23) is connected with lower contact (31), piston (7) is fixedly connected with piston inner core (4) by shear pin (5), the corresponding shear pin of ball seat (6) (5) has hole, fishing head (8) below is provided with and sets lock dog pull bar (12), set between lock dog pull bar (12) and piston inner core (4) and be provided with the joint of slipping out of the hand (10), joint (10) upper end of slipping out of the hand is connected with fishing head (8) simultaneously, the joint (10) of slipping out of the hand is fixedly connected with piston inner core (4) by shear pin (11), piston inner core (4) bottom be closely connected with piston (7) bottom and piston inner core (4) bottom in be provided with hang fixture block (13), piston (7) lower end connects piston lower block cap (15), piston lower block cap (15) is connected with end packing element (17) by packing element upper pressing cap (14), packing element upper pressing cap (14) top is closely connected with piston inner core (4) bottom and upper end heads on the joint of slipping out of the hand (10), packing element upper pressing cap (14) middle part is tightly connected with piston (7) lower end, the bottom of packing element upper pressing cap (14) connects packing element central tube (16) simultaneously, packing element central tube (16) with set lock dog pull bar (12) and be connected, set that lock dog pull bar (12) is connected with deblocking break adrift (21) and middle part is provided with groove, groove is placed snap ring (20), between end packing element (17) and middle packing element (19), spacer ring (18) is set, between middle packing element (19) and lower rubber cylinder, spacer ring is set, between deblocking break adrift (21) inner side and upper center tube (9) bottom, be fixedly connected with by shear pin (22), deblocking break adrift (21) outside connects lower center tube (23) simultaneously, lower rubber cylinder is connected with upper centrum (25) by packing element lower pressing cap (24), between upper centrum (25) and hypocentrum (29), be provided with slips (27), slips (27) seat is in slip sleeve (26), slip sleeve (26) comprises part and lower part, on slips, part is stuck in centrum (25) bottom, gear cap (30) is set between part and hypocentrum (29) under slips, in slips (27), be provided with spring (28).
Concrete, between piston urceolus (3) and piston (7), be provided with sealing ring.
Concrete, between ball seat (6) and piston inner core (4), be provided with sealing ring.
Concrete, between piston inner core (4) and the joint of slipping out of the hand (10), sealing ring is set.
Concrete, between packing element upper pressing cap (14) and piston (7), sealing ring is set, packing element upper pressing cap (14) and set between lock dog pull bar (12) sealing ring is set.
Concrete, between lower center tube (23) and lower contact (31), sealing ring is set.
Preferably, packing element central tube (16) with set lock dog pull bar (12) contact surface and be provided with unidirectional sawtooth.
Preferably, described snap ring (20) arranged outside has tooth.
The beneficial effects of the utility model are: there is the function of giving up, both solved conventional packer without the function of giving up, need the difficult problems such as the additional equipment of giving up, operating time are long, labour intensity is high, reduced again the wasting of resources, reduced construction cost.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model detailed description of the invention.
1 top connection 2 pressure cap 3 piston urceolus 4 piston inner core 5 shear pin 6 ball seat 7 pistons
8 fishing head 9 upper center tubes 10 joint 11 shear pins 12 of slipping out of the hand set lock dog pull bar
13 hang fixture block 14 packing element upper pressing cap 15 piston lower block cap 16 packing element central tubes
28 spring 29 hypocentrums 30 keep off cap 31 lower contacts.
Detailed description of the invention
Back-off packer as novel in Fig. 1, top connection 1 is connected with piston 7, and top connection 1 is connected with pressure cap 2 screws, and piston urceolus 3 is positioned at pressure cap 2 belows and is connected with top connection 1 and piston 7, between piston urceolus 3 and piston 7, is provided with sealing ring.Piston urceolus 3 bottoms have hole, and piston inner core 4 is connected with top connection 1 inwall and piston 7, and ball seat 6 is arranged on the inner side of piston inner core 4, between ball seat 6 and piston inner core 4, is provided with sealing ring.The below of ball seat 6 is connected with fishing head 8, fishing head 8 bottoms arrange around upper center tube 9, upper center tube 9 bottoms are connected with deblocking break adrift 21 inner sides, deblocking break adrift 21 outsides connect lower center tube 23 simultaneously, lower center tube 23 is connected with lower contact 31, between lower center tube 23 and lower contact 31, sealing ring is set.
Piston 7 is fixedly connected with piston inner core 4 by shear pin 5, and the corresponding shear pin 5 of ball seat 6 has hole, and fishing head 8 belows are provided with and set lock dog pull bar 12.Set between lock dog pull bar 12 and piston inner core 4 and be provided with the joint 10 of slipping out of the hand, joint 10 upper ends of slipping out of the hand are connected with fishing head 8 simultaneously.The joint 10 of slipping out of the hand is fixedly connected with piston inner core 4 by shear pin 11, piston inner core 4 bottoms be closely connected with piston 7 bottoms and piston inner core 4 bottoms in be provided with and hang fixture block 13, piston 7 lower ends connect piston lower block caps 15.Piston lower block cap 15 is connected with end packing element 17 by packing element upper pressing cap 14.Packing element upper pressing cap 14 tops are closely connected with piston inner core 4 bottoms and upper end heads on the joint 10 of slipping out of the hand, piston inner core 4 and slip out of the hand, between joint 10, sealing ring is set; Packing element upper pressing cap 14 middle parts and piston 7 lower ends are tightly connected; The bottom of packing element upper pressing cap 14 connects packing element central tube 16 simultaneously, between packing element upper pressing cap 14 and piston 7, sealing ring is set, packing element upper pressing cap 14 and set between lock dog pull bar 12 sealing ring is set.Packing element central tube 16 with set lock dog pull bar 12 and be connected, packing element central tube 16 with set lock dog pull bar 12 contact surfaces and be provided with unidirectional sawtooth, set that lock dog pull bar 12 is connected with deblocking break adrift 21 and middle part is provided with groove, groove is placed snap ring 20, and snap ring 20 arranged outside have tooth.Between end packing element 17 and middle packing element 19, spacer ring 18 is set, between middle packing element 19 and lower rubber cylinder, spacer ring is set.Between deblocking break adrift 21 inner sides and upper center tube 9 bottoms, be fixedly connected with by shear pin 22, deblocking break adrift 21 outsides connect lower center tube 23 simultaneously.Lower rubber cylinder is connected with upper centrum 25 by packing element lower pressing cap 24, between upper centrum 25 and hypocentrum 29, is provided with slips 27.In slip sleeve 26, slip sleeve 26 comprises part and lower part to 27 of slips, and on slips, part is stuck in centrum 25 bottoms, and gear cap 30 is set between part and hypocentrum 29 under slips, is provided with spring 28 in slips 27.
When assembling, if there is no hermetically-sealed construction between component, can be gapped between component, oil pipe internal pressure will enter the gap between component.The utility model is lowered to design well depth, drop into steel ball 32 from well head, after steel ball 32 is seated on ball seat 6, in oil pipe, suppress, reach design pressure, shear pin 5 is cut off, piston 7 is descending, hang fixture block 13 and lose outer support, piston inner core 4 and packing element upper pressing cap 14 unlock, promote packing element upper pressing cap 14 simultaneously, packing element central tube 16, end packing element 17, spacer ring 18, middle packing element 19, packing element lower pressing cap 24, upper cone 25 is descending, go downwards to certain position, slips 27 extends radially out, end packing element 17 and middle packing element 19 radial compression expand, tooth locking on unidirectional sawtooth and snap ring 20 on packing element central tube 16, set.
Continue to suppress, cut off shear pin 11, thereby top connection 1, pressure cap 2, piston urceolus 3, piston inner core 4, shear pin 5, ball seat 6, piston 7, suspension fixture block 13 and piston lower block cap 15 are proposed to pit shaft.Wherein hang fixture block 13 and on piston inner core 4, carry process China and foreign countries and move, carrying piston 7 and moving upward.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement detailed description of the invention of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (8)
1. novel back-off packer, top connection (1) is connected with piston (7), top connection (1) is connected with pressure cap (2) screw, piston urceolus (3) is positioned at pressure cap (2) below and is connected with top connection (1) and piston (7), piston urceolus (3) bottom has hole, piston inner core (4) is connected with top connection (1) inwall and piston (7), ball seat (6) is arranged on the inner side of piston inner core (4), the below of ball seat (6) is connected with fishing head (8), fishing head (8) bottom arranges around upper center tube (9), upper center tube (9) bottom is connected with deblocking break adrift (21) inner side, deblocking break adrift (21) outside connects lower center tube (23) simultaneously, lower center tube (23) is connected with lower contact (31), it is characterized in that, piston (7) is fixedly connected with piston inner core (4) by shear pin (5), the corresponding shear pin of ball seat (6) (5) has hole, fishing head (8) below is provided with and sets lock dog pull bar (12), set between lock dog pull bar (12) and piston inner core (4) and be provided with the joint of slipping out of the hand (10), joint (10) upper end of slipping out of the hand is connected with fishing head (8) simultaneously, the joint (10) of slipping out of the hand is fixedly connected with piston inner core (4) by shear pin (11), piston inner core (4) bottom be closely connected with piston (7) bottom and piston inner core (4) bottom in be provided with hang fixture block (13), piston (7) lower end connects piston lower block cap (15), piston lower block cap (15) is connected with end packing element (17) by packing element upper pressing cap (14), packing element upper pressing cap (14) top is closely connected with piston inner core (4) bottom and upper end heads on the joint of slipping out of the hand (10), packing element upper pressing cap (14) middle part is tightly connected with piston (7) lower end, the bottom of packing element upper pressing cap (14) connects packing element central tube (16) simultaneously, packing element central tube (16) with set lock dog pull bar (12) and be connected, set that lock dog pull bar (12) is connected with deblocking break adrift (21) and middle part is provided with groove, groove is placed snap ring (20), between end packing element (17) and middle packing element (19), spacer ring (18) is set, between middle packing element (19) and lower rubber cylinder, spacer ring is set, between deblocking break adrift (21) inner side and upper center tube (9) bottom, be fixedly connected with by shear pin (22), deblocking break adrift (21) outside connects lower center tube (23) simultaneously, lower rubber cylinder is connected with upper centrum (25) by packing element lower pressing cap (24), between upper centrum (25) and hypocentrum (29), be provided with slips (27), slips (27) seat is in slip sleeve (26), slip sleeve (26) comprises part and lower part, on slips, part is stuck in centrum (25) bottom, gear cap (30) is set between part and hypocentrum (29) under slips, in slips (27), be provided with spring (28).
2. novel back-off packer according to claim 1, is characterized in that, between piston urceolus (3) and piston (7), is provided with sealing ring.
3. novel back-off packer according to claim 1, is characterized in that, between ball seat (6) and piston inner core (4), is provided with sealing ring.
4. novel back-off packer according to claim 1, is characterized in that, between piston inner core (4) and the joint of slipping out of the hand (10), sealing ring is set.
5. novel back-off packer according to claim 1, is characterized in that, between packing element upper pressing cap (14) and piston (7), sealing ring is set, packing element upper pressing cap (14) and set between lock dog pull bar (12) sealing ring is set.
6. novel back-off packer according to claim 1, is characterized in that, between lower center tube (23) and lower contact (31), sealing ring is set.
7. novel back-off packer according to claim 1, is characterized in that, packing element central tube (16) with set lock dog pull bar (12) contact surface and be provided with unidirectional sawtooth.
8. novel back-off packer according to claim 1, is characterized in that, described snap ring (20) arranged outside has tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857095.XU CN203655217U (en) | 2013-12-24 | 2013-12-24 | Novel releasing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857095.XU CN203655217U (en) | 2013-12-24 | 2013-12-24 | Novel releasing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655217U true CN203655217U (en) | 2014-06-18 |
Family
ID=50921617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320857095.XU Expired - Fee Related CN203655217U (en) | 2013-12-24 | 2013-12-24 | Novel releasing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655217U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747116A (en) * | 2015-03-26 | 2015-07-01 | 西南石油大学 | Umbrella-shaped downhole blowout preventer used for reducing overflowing risk |
| CN111021985A (en) * | 2018-10-09 | 2020-04-17 | 中国石油天然气股份有限公司 | Bridge plug |
-
2013
- 2013-12-24 CN CN201320857095.XU patent/CN203655217U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747116A (en) * | 2015-03-26 | 2015-07-01 | 西南石油大学 | Umbrella-shaped downhole blowout preventer used for reducing overflowing risk |
| CN104747116B (en) * | 2015-03-26 | 2017-10-03 | 西南石油大学 | It is a kind of to be used to reduce the umbellate form downhole blow-out preventer of overflow risk |
| CN111021985A (en) * | 2018-10-09 | 2020-04-17 | 中国石油天然气股份有限公司 | 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: 20140618 Termination date: 20201224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |