CN105239956B - Wedge-type sealer - Google Patents
Wedge-type sealer Download PDFInfo
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- CN105239956B CN105239956B CN201510752598.4A CN201510752598A CN105239956B CN 105239956 B CN105239956 B CN 105239956B CN 201510752598 A CN201510752598 A CN 201510752598A CN 105239956 B CN105239956 B CN 105239956B
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- wedge
- righting
- reinforcing plate
- type sealer
- sleeve pipe
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Abstract
The invention provides wedge-type sealer, belong to oil field development DP technology field, the wedge-type sealer is arranged in sleeve pipe, including causing of being sequentially connected with from top to bottom oil casing communicating vessel, upper shield wedge device, cone that oil pipe connect with sleeve pipe, hold wedge connecting tube, lower shield wedge device and malleation when closing back-pressure when the ball-and-seat opened, be arranged with ring packing wedge in described cone.Wedge-type sealer described in the invention, is arranged in sleeve pipe (pit shaft), and centrum of the ring packing wedge under pressure along centre is descending, and more wedge is tighter, realizes sealing oil sets annular space purpose.When needed, by beating high pressure or upper lifting pipe post makes ring packing wedge depart from centrum and fall into hold wedge connecting tube and fail in the sleeve pipe (pit shaft) simultaneously.
Description
Technical field
The invention belongs to oil field development DP technology field, more particularly, to a kind of pit shaft (sleeve) interior sealing
Wedge-type sealer.
Background technology
Being born that day from oil well, in world wide in order to develop the need for when insulating oil, gas and water in wellbore casing
The potted component of all kinds of packers used all uses elastomeric material.Operation principle is by suppressing expansion or mechanical presses method
The purpose of packing pit shaft is realized using the high resiliency of rubber tube.The various types of packers made of the principle are recovering the oil, noted
In the production such as water, pressure break, acidifying, sand control, it is made that huge Historic Contributions in the construction such as discharge opeing.But have also discovered such
The serious defect of product：
1st, ageing-resistant and fatigability is poor.Due to rubber tube worked in wellbore casing high temperature to be born, high pressure, the temperature difference become
The comprehensive function of corrosion composition makes its rubber in the lab in change, pressure difference change, string creep, the dynamic abrasion of frequency and fluid media (medium)
The glue energy packer of ageing-resistant 5 years, was just failed in actual use less than 1 year.Substantial amounts of, long-term production leadtime tables of data
It is bright：At present all kinds of packers more than 95% failed in 1 year.And the packer failure period at least to reach three and half with
On could meet oil well and water injection well the need for.
2nd, poor reliability.Because all links particularly hole deviations and wellbore casing such as manufacture, handling, transport, work be not clean
And frequently set cause to go into the well during rubber tube damage.Also structure the reason for make packing element discontinuity, cause failure.
Often occur that with great difficulty position will be arrived under packer in site operation, it has been found that fail and go into the well, it is necessary to change one.And newly change
It can ensure that it is unknown not fail.Also a kind of situation：Because packing element has partial injury (can not be checked in well, only
There is well head could check), start effectively to work, but do not know when just to fail etc., the loss thereby resulted in
It is very huge.
3rd, needed before use with gauguste cutter drifting and use scraper scraping；Using having the trouble of lost tool in holes such as block rubber in rear well.
4th, due to the product currently without a reliable sealing oil sets annular space, have to change in DP technology field
Become and abandon many great technological measures, the loss thereby resulted in is even more very huge.
The content of the invention
In view of this, the invention aimed to provide it is a kind of it is entirely different with existing product structure, in wellbore casing
Isolating tool-wedge-type sealer of interior good reliability, use time length.
To reach above-mentioned purpose, what the technical scheme of the invention was realized in：
A kind of wedge-type sealer, the wedge-type sealer is arranged in sleeve pipe 1, including be sequentially connected with from top to bottom cause
Closed when oil casing communicating vessel 2, upper shield wedge device 3, cone 4, appearance wedge connecting tube 5, lower shield wedge device 6 and malleation that oil pipe is connected with sleeve pipe 1
Close in the ball-and-seat 7 opened during back-pressure, described cone 4 and be arranged with ring packing wedge 8；
Described upper shield wedge device 3 includes the first hollow center body 31, and uniform ring is located at the outer surface of the first hollow center body 31
On multiple first righting gussets 32, the multiple first righting gussets 32 of series connection and be arranged on the of the lower end of the first hollow center body 31
One annular reinforcing plate 33 and the first discharge orifice 34 being arranged in first annular reinforcing plate 33, described multiple first righting gussets
32 radians away from first annular one end of reinforcing plate 33 are less than the radian close to first annular one end of reinforcing plate 33, described first
The height of annular reinforcing plate 33 and the first righting gusset 32 of the junction of the first annular righting gusset 32 of reinforcing plate 33 and first
It is highly consistent；
The diameter of the described upper end of cone 4 is less than the diameter of the lower end of cone 4；
The described external diameter for holding wedge connecting tube 5 is less than the minimum outer diameter of cone 4；
The maximum outside diameter of described lower shield wedge device 6 is adapted with the internal diameter of sleeve pipe 1, and it is empty that described lower shield wedge device 6 includes second
Heart centerbody 61, uniform ring is located at multiple second righting gussets 62 on the outer surface of the second hollow center body 61, connect multiple the
Two righting gussets 62 are simultaneously arranged on second annular reinforcing plate 63 of the second hollow center body 61 at lower end and are arranged on second
The second discharge orifice 64 in annular reinforcing plate 63, the radians of described multiple second righting gussets 62 is along the second hollow center body 61
Upper end to lower end first increases and then decreases, the height and the second annular reinforcing plate 63 and second of described the second annular reinforcing plate 63
The second righting of the junction gusset 62 of righting gusset 62 it is highly consistent；
Described ring packing wedge 8 includes flexible gland 81 and nylon outer barrel 82, and described flexible gland 81 includes
Seal cap 811 and sealing ring 812, described seal cap 811 and sealing ring 812 are integrally formed, and described seal cap 811 is arranged on
The upper end of sealing ring 812, described nylon outer barrel 82 is set in outside sealing ring 812, and the top of described nylon outer barrel 82 is withstood on
In seal cap 811, along its axial direction staggeredly provided with a plurality of mutually disconnected gap on the described outer surface of nylon outer barrel 82
821, the external diameter of described nylon outer barrel 82 is identical with the internal diameter of sleeve pipe 1, and the internal diameter of the upper end of described nylon outer barrel 82 is less than
The internal diameter of lower end.
Further, the oil casing communicating vessel 2 is the structure that bar shaped groove is provided with oil pipe.
Further, the upper end of the first hollow center body 31 of the upper shield wedge device 3 is provided with provided with the first female joint 35, lower end
First pin end 36, first female joint 35 is connected by screw thread with oil casing communicating vessel 2, first pin end 36 and cone
It is threadedly coupled between 4.
Further, the upper end of the second hollow center body 61 of the lower shield wedge device 6 is set provided with the second female joint 65, lower end
There is the second pin end 66, second female joint 65 is connected by screw thread with holding wedge connecting tube 5, second pin end 66 and list
Stream valve 7 passes through screwed connection.
Further, the annular reinforcement between all two neighboring first righting gussets or the second righting gusset
Discharge orifice is respectively provided with plate, and discharge orifice is set close to the side of hollow center body.
Further, the length of the cone 4 is not less than the length of ring packing wedge 8.
Further, it is be arranged in parallel between multiple gaps 821, and is distributed in the outer surface of whole nylon outer barrel 82
On.
Further, the length for holding wedge connecting tube 5 is not less than the length of ring packing wedge 8.
Further, the maximum outside diameter of the upper shield wedge device 3 and lower shield wedge device 6 is respectively less than the internal diameter 3-6mm of sleeve pipe 1.
Further, the free valve ball that the ball-and-seat 7 is included under free valve ball and ball seat, normal pressure state is located
On ball seat, the free valve ball under back-pressure state leaves ball seat.
Relative to prior art, the wedge-type sealer described in the invention has the advantage that：
Wedge-type sealer described in the invention, is arranged in sleeve pipe (pit shaft), ring packing wedge is under pressure
Centrum along centre is descending, and more wedge is tighter, realizes sealing oil sets annular space purpose.When needed, at sleeve pipe (pit shaft) simultaneously
It is interior by beating high pressure or upper lifting pipe post makes ring packing wedge depart from centrum to fall into appearance wedge connecting tube and fail.
Brief description of the drawings
The accompanying drawing for constituting the part of the invention is used for providing further understanding the invention, present invention wound
The schematic description and description made is used to explain the invention, does not constitute the improper restriction to the invention.
In accompanying drawing：
Fig. 1 is the state diagram of going into the well of the wedge-type sealer described in the invention embodiment；
Fig. 2 is the upper structural representation for protecting wedge device in the wedge-type sealer described in the invention embodiment；
Fig. 3 is the lower structural representation for protecting wedge device in the wedge-type sealer described in the invention embodiment；
Fig. 4 is Fig. 3 A direction views；
Fig. 5 is the structural representation of annular wedged seal in wedge-type sealer described in the invention embodiment；
Fig. 6 be the invention embodiment described in wedge-type sealer in flexible gland structural representation；
Fig. 7 is nylon outer tube structure schematic diagram in the wedge-type sealer described in the invention embodiment；
Fig. 8 is the working state figure of the wedge-type sealer described in the invention embodiment；
Fig. 9 acts the figure that does well for the wedge-type sealer described in the invention embodiment.
Description of reference numerals：
Wedge device, 31- the first hollow center bodies, 32- the first righting gussets, 33- are protected on 1- sleeve pipes, 2- oil casing communicating vessels, 3-
First annular reinforcing plate, the discharge orifices of 34- first, the female joints of 35- first, the pin ends of 36- first, 4- cones, 5- holds wedge connecting tube,
Protect wedge device under 6-, 61- the second hollow center bodies, 62- the second righting gussets, the annular reinforcing plates of 63- second, the discharge orifices of 64- second,
The female joints of 65- second, the pin ends of 66- second, 7- ball-and-seats, 8- ring packing wedges, 81- flexible glands, 811- seal caps,
812- sealing rings, 82- nylon outer barrels, 821- gaps.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the invention can
To be mutually combined.
Describe the invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, wedge-type sealer, the wedge-type sealer is arranged in sleeve pipe 1, including it is sequentially connected with from top to bottom
Cause oil casing communicating vessel 2, upper shield wedge device 3, cone 4 that oil pipe connect with sleeve pipe 1, hold wedge connecting tube 5, the lower wedge device 6 and just of protecting
Ring packing wedge 8 is arranged with the ball-and-seat 7 opened when closing back-pressure during pressure, described cone 4.
As shown in Fig. 2 the maximum outside diameter of the upper shield wedge device 3 is less than the internal diameter 3-6mm of sleeve pipe 1, described upper shield wedge device 3 is wrapped
The first hollow center body 31 is included, uniform ring is located at multiple first righting gussets 32, string on the outer surface of the first hollow center body 31
Join multiple first righting gussets 32 and be arranged on the first annular reinforcing plate 33 of the lower end of the first hollow center body 31 and be arranged on the
The first discharge orifice 34 in one annular reinforcing plate 33, described multiple first righting gussets 32 are away from first annular reinforcing plate 33 1
The radian at end is less than the radian close to first annular one end of reinforcing plate 33, the height and first of described first annular reinforcing plate 33
First righting gusset 32 of the junction of the annular righting gusset 32 of reinforcing plate 33 and first it is highly consistent, the of upper shield wedge device 3
The upper and lower ends of one hollow center body 31 are respectively equipped with the first female joint 35 and the first pin end 36, and first female joint 35 passes through
Screw thread is connected with oil casing communicating vessel 2, is threadedly coupled between first pin end 36 and cone 4, the main function of upper shield wedge device 3
Be when going into the well the first hollow center body 31 and while the descending impeller ring packing wedge 8 of first annular reinforcing plate 33 with lower shield wedge
Device 6 protects annular wedged seal 8 from intense impact and extruding jointly, while deforming in sleeve pipe 1, utilizing when junk etc. meets card in well
The light unfreezing of deformation of righting gusset.The effect of discharge orifice is：Fluid can pass through therefrom when going into the well or rising, suppress.
The diameter of the upper end of cone 4 is less than the diameter of the lower end of cone 4, and the length of cone 4 is not less than the length of ring packing wedge 8
Degree, ring packing wedge 8 is close to its outer wall and slided from small end to big end under pressure, and is closely pasted with the inwall of sleeve pipe 1 simultaneously
Close, so as to reach the purpose of sealing oil pipe and the annular space of sleeve pipe 1.
The external diameter for holding wedge connecting tube 5 is less than the minimum outer diameter of cone, and the length for holding wedge connecting tube 5 is not less than ring packing wedge
8 length, when needing and acting sleeve pipe 1 by wedge-type sealer squeezes into the ring packing wedge 8 of failure and retains herein.
As Figure 3-Figure 4, the maximum outside diameter of lower shield wedge device 6 is less than the internal diameter 3-6mm of sleeve pipe 1, and described lower shield wedge device 6 is wrapped
The second hollow center body 61 is included, uniform ring is located at multiple second righting gussets 62, string on the outer surface of the second hollow center body 61
Join multiple second righting gussets 62 and be arranged on second annular reinforcing plate 63 of the second hollow center body 61 at lower end and set
The second discharge orifice 64 in the second annular reinforcing plate 63 is put, the radian of described multiple second righting gussets 62 is hollow along second
The upper end of centerbody 61 is to lower end first increases and then decreases, the height and the second annular reinforcing plate of described the second annular reinforcing plate 63
63 and the second righting of the junction gusset 62 of the second righting gusset 62 it is highly consistent, it is lower shield wedge device 6 the second hollow center body 61
Upper and lower ends be respectively equipped with the second female joint 65 and the second pin end 66, second female joint 65 passes through screw thread and connected with holding wedge
Adapter 5 is connected, and second pin end 66 is with ball-and-seat 7 by screwed connection, and the main function of lower shield wedge device 6 is the epoch of going into the well
The inwall of sleeve pipe 1 is handled for gauguste cutter and scraper, annular wedged seal 8 is protected jointly from strong punching with upper shield wedge device 3
Hit and extrude, while the shape of righting gusset is that big, the above diameter of following diameter is small, be difficult to be stuck in sleeve pipe 1, i.e.,
Make to deform due to sleeve pipe 1, when junk etc. meets card in well using righting gusset deformation can also easily unfreezing, while positioned at appearance wedge
The bottom of connecting tube 5, makes the ring packing wedging down 8 of failure thereon.
It is respectively provided with discharge orifice in annular reinforcing plate between all two neighboring righting gussets, and discharge orifice is in hollow
The side of heart body is set.
As shown in Figure 5-Figure 7, described ring packing wedge 8 includes flexible gland 81 and nylon outer barrel 82, and described is soft
Property sealing shroud 81 include seal cap 811 and sealing ring 812, described seal cap 811 and sealing ring 812 is integrally formed, described
Seal cap 811 is arranged on the upper end of sealing ring 812, and described nylon outer barrel 82 is set in outside sealing ring 812, outside described nylon
The top of cylinder 82 is withstood in seal cap 811, along its axial direction staggeredly provided with a plurality of mutual on the described outer surface of nylon outer barrel 82
It is arranged in parallel, and is distributed on the outer surface of whole nylon outer barrel 82 between disconnected gap 821, multiple gaps 821, it is described
Nylon outer barrel 82 external diameter it is identical with the internal diameter of sleeve pipe 1, the internal diameter of the upper end of described nylon outer barrel 82 is less than the interior of lower end
Footpath, the making material of flexible gland 81 is seal cap under oil resistant, high temperature resistant, corrosion-resistant, impact-resistant rubber, nature
811 external diameters are more than the internal diameter of sleeve pipe 1, are squeezed into when going into the well by its pliability in sleeve pipe 1, with the inwall of sleeve pipe 1 all the time in close patch
Conjunction state.When initially suppressing, positive differential pressure is formed above and below it and promotes whole ring packing wedge 8 dynamic along the outer wall of cone 4 to hyposphene.Buddhist nun
Imperial outer barrel 82 has a kind of certain degree of hardness to have certain elasticity again, will not be plastically deformed in certain field of load
Nylon material makes the wedge-shaped cylinder that external diameter is identical with the internal diameter of sleeve pipe 1, the big upper end in internal diameter lower end is small, and circumference above and below it vertically
It is above each uniformly to cut out the gap 821 that several angles are interlaced, length is overlapped, do not connect, have one fixed width up and down.Buddhist nun
When imperial outer barrel 82 is squeezed, gap 821 diminishes, then girth diminishes, and diameter diminishes naturally.Smoothly slided in sleeve pipe 1.Work as external force
During the power being plastically deformed more than nylon, gap 821 accommodates the body distortion of nylon outer barrel 82.Again due to the intensity of nylon outer barrel 82
High, wearability is good, and the formation of flexible gland 81 is protected when being slided in sleeve pipe 1.
Oil casing communicating vessel 2 is the structure that bar shaped groove is provided with oil pipe.
The free valve ball that ball-and-seat 7 is included under free valve ball and ball seat, the normal pressure state is seated on ball seat, back-pressure
Free valve ball under state leaves ball seat.
As shown in figure 8, wedge-type sealer enters behind precalculated position, oil pipe gate is closed, anti-flushing well is suppressed, and ball-and-seat 7 exists
Closed under positive pressure, fluid compression ring packing wedge 8 is close to the outer wall of cone 4 and the downward wedge of the inwall of sleeve pipe 1.Increase with pressure
Height, it is closer that ring packing wedge 8 is wedged in the outer wall of cone 4 and the inwall annular space of sleeve pipe 1, so that Seal Oil collar-shaped is empty
Between.Open oil pipe and go out port strobe, flushing fluid is entered in oil pipe by oil casing communicating vessel 2 from oil sets annular space, from oil pipe gate
Discharge.After well-flushing terminates, oil well pump by oil casing communicating vessel 2 by the oil sets annular space emptying rate of liquid of ring packing wedge more than 8,
Ring packing wedge 8 its own convergent force, up and down pressure difference, liquid nighttide gush, under the synergy of string creep it is up along cone, from
And in by guard mode.Later said process is repeated during each well-flushing.Realize that well-flushing liquid does not pollute stratum so as to protecting field
The purpose of layer.
As shown in figure 9, when needing to propose wedge-type sealer out of sleeve pipe 1, ring packing wedge 8 need to be moved to appearance wedge and connected
The position of adapter 5.Method has two：A instead beats high pressure from sleeve pipe 1, and ring packing wedge 8 is pushed down over into cone 4 falls into lower shield wedge device 6
Above, into the position for holding wedge connecting tube 5.B is upper to carry tubing string, cone 4 is deviate from from ring packing wedge 8, then ring packing
Wedge 8 is fallen into above lower shield wedge device 6, is taken off into the position for holding wedge connecting tube 5, the state of failure from cone 4.
The preferred embodiment of the invention is the foregoing is only, creation is not intended to limit the invention, it is all at this
Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc. should be included in the invention
Protection domain within.
Claims (10)
1. a kind of wedge-type sealer, it is characterised in that：The wedge-type sealer is arranged in sleeve pipe (1), including suitable from top to bottom
Secondary connection cause oil pipe connect with sleeve pipe (1) oil casing communicating vessel (2), it is upper shield wedge device (3), cone (4), appearance wedge connecting tube
(5) it is arranged with, lower shield wedge device (6) and the ball-and-seat (7) opened when closing back-pressure during malleation, described cone (4) annular close
Seal wedge (8)；
Described upper shield wedge device (3) includes the first hollow center body (31), and uniform ring is located at first hollow center body (31) appearance
Multiple first righting gussets (32) on face, connecting multiple first righting gussets (32) and is arranged on the first hollow center body (31)
The first annular reinforcing plate (33) of lower end and the first discharge orifice (34) being arranged in first annular reinforcing plate (33), described is more
Radian of the individual first righting gusset (32) away from first annular reinforcing plate (33) one end is less than close to first annular reinforcing plate (33)
The radian of one end, height and first annular reinforcing plate (33) and the first righting gusset of described first annular reinforcing plate (33)
(32) the first righting gusset (32) of junction it is highly consistent；
The diameter of described cone (4) upper end is less than the diameter of cone (4) lower end；
The external diameter of described appearance wedge connecting tube (5) is less than the minimum outer diameter of cone (4)；
The maximum outside diameter of described lower shield wedge device (6) is adapted with sleeve pipe (1) internal diameter, and described lower shield wedge device (6) includes second
Hollow center body (61), uniform ring is located at multiple second righting gussets (62) on second hollow center body (61) outer surface, string
Join multiple second righting gussets (62) and be arranged on second annular reinforcing plate of the second hollow center body (61) at lower end
(63) and the second discharge orifice (64) for being arranged on the second annular reinforcing plate (63), described multiple second righting gussets (62)
Upper end of the radian along the second hollow center body (61) is to lower end first increases and then decreases, the height of described the second annular reinforcing plate (63)
Degree with second annular reinforcing plate (63) and second righting gusset (62) the second righting of junction gusset (62) it is highly consistent；
Described ring packing wedge (8) includes flexible gland (81) and nylon outer barrel (82), described flexible gland (81)
Including seal cap (811) and sealing ring (812), described seal cap (811) and sealing ring (812) is integrally formed, and described is close
Sealing cap (811) is arranged on the upper end of sealing ring (812), and described nylon outer barrel (82) is set in sealing ring (812) outside, described
The top of nylon outer barrel (82) is withstood in seal cap (811), is handed on described nylon outer barrel (82) outer surface along its axial direction
Mistake is provided with a plurality of mutually disconnected gap (821), and the external diameter of described nylon outer barrel (82) is identical with the internal diameter of sleeve pipe (1), institute
The internal diameter of the upper end for the nylon outer barrel (82) stated is less than the internal diameter of lower end.
2. wedge-type sealer according to claim 1, it is characterised in that：The oil casing communicating vessel (2) is to be provided with oil pipe
The structure of bar shaped groove.
3. wedge-type sealer according to claim 1, it is characterised in that：First hollow center of the upper shield wedge device (3)
Body (31) upper end is provided with the first pin end (36) provided with the first female joint (35), lower end, and first female joint (35) passes through silk
Button is connected with oil casing communicating vessel (2), is threadedly coupled between first pin end (36) and cone (4).
4. wedge-type sealer according to claim 1, it is characterised in that：Second hollow center of the lower shield wedge device (6)
The upper end of body (61) is provided with the second pin end (66) provided with the second female joint (65), lower end, and second female joint (65) passes through
Screw thread is connected with holding wedge connecting tube (5), and second pin end (66) passes through screwed connection with ball-and-seat (7).
5. wedge-type sealer according to claim 1, it is characterised in that：All two neighboring first righting gussets or
Discharge orifice is respectively provided with annular reinforcing plate between the second righting gusset, and discharge orifice is set close to the side of hollow center body
Put.
6. wedge-type sealer according to claim 1, it is characterised in that：The length of the cone (4) is close not less than annular
Seal the length of wedge (8).
7. wedge-type sealer according to claim 1, it is characterised in that：It is be arranged in parallel between multiple gaps (821),
And be distributed on the outer surface of whole nylon outer barrel (82).
8. wedge-type sealer according to claim 1, it is characterised in that：The length for holding wedge connecting tube (5) is not less than
The length of ring packing wedge (8).
9. wedge-type sealer according to claim 1, it is characterised in that：The upper shield wedge device (3) and lower shield wedge device (6)
Maximum outside diameter is respectively less than sleeve pipe (1) internal diameter 3-6mm.
10. wedge-type sealer according to claim 1, it is characterised in that：The ball-and-seat (7) includes free valve ball and ball
The free valve ball under seat, normal pressure state is seated on ball seat, and the free valve ball under back-pressure state leaves ball seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510752598.4A CN105239956B (en) | 2015-11-04 | 2015-11-04 | Wedge-type sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510752598.4A CN105239956B (en) | 2015-11-04 | 2015-11-04 | Wedge-type sealer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105239956A CN105239956A (en) | 2016-01-13 |
| CN105239956B true CN105239956B (en) | 2017-10-03 |
Family
ID=55037750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510752598.4A Active CN105239956B (en) | 2015-11-04 | 2015-11-04 | Wedge-type sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105239956B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882111B (en) * | 2019-04-11 | 2024-04-12 | 天津市益彰石油科技发展有限公司 | Anti-blocking anti-falling through lubrication wedge type sealer |
| CN110700789B (en) * | 2019-11-12 | 2021-10-15 | 宋宝玉 | Oil field packer |
| CN115874970B (en) * | 2023-03-08 | 2023-06-09 | 天津市益彰石油科技发展有限公司 | Bidirectional pressure-bearing wedge sealer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4134454A (en) * | 1977-09-21 | 1979-01-16 | Otis Engineering Corporation | Multi-stage sliding valve fluid operated and pressure balanced |
| US4934460A (en) * | 1989-04-28 | 1990-06-19 | Baker Hughes Incorporated | Pressure compensating apparatus and method for chemical treatment of subterranean well bores |
| CN201273168Y (en) * | 2008-09-19 | 2009-07-15 | 中国石化集团胜利石油管理局井下作业公司 | High pressure-resistant sealing mechanism of packer |
| US9739113B2 (en) * | 2012-01-16 | 2017-08-22 | Schlumberger Technology Corporation | Completions fluid loss control system |
| CN203362102U (en) * | 2013-05-23 | 2013-12-25 | 深圳市百勤石油技术有限公司 | Straddle type packer capable of repeatedly conducting setting |
| CN205100932U (en) * | 2015-11-04 | 2016-03-23 | 天津市益彰石油科技发展有限公司 | Ware is sealed to wedge type |
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2015
- 2015-11-04 CN CN201510752598.4A patent/CN105239956B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105239956A (en) | 2016-01-13 |
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Inventor after: Chen Jianjun Inventor after: Liu Daojie Inventor after: Ning Xiaoyong Inventor after: Li Chaofeng Inventor after: Chen Weichao Inventor before: Chen Jianjun |