CN207315293U - Packer - Google Patents
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- CN207315293U CN207315293U CN201721249722.6U CN201721249722U CN207315293U CN 207315293 U CN207315293 U CN 207315293U CN 201721249722 U CN201721249722 U CN 201721249722U CN 207315293 U CN207315293 U CN 207315293U
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Abstract
This application provides a kind of packer, including：Top connection, the central tube and retaining outer barrel being connected with top connection, ring cavity is formed between the two, central tube is provided with first through hole, retaining outer barrel is provided with the first locking tooth, deblocking sliding sleeve and connector are set in ring cavity, set on deblocking sliding sleeve fluted, the retaining ring for being provided with the second locking tooth is housed in groove, connector is connected with retaining outer barrel, its outer wall is formed with step, step-shaped top unseals sliding sleeve admittedly, outer tube is arranged with outside central tube, the solid step in the upper end top, and it is arranged with backstop cap, lower backstop cap, on top is solid, the lower fluid cylinder for setting component and descending backstop cap admittedly with top of lower backstop cap, outer tube, vacuum chamber is formed between lower backstop cap and lower fluid cylinder, lower fluid cylinder connects overcoat, it is lower that lower contact is folded between fluid cylinder and central tube, lower contact, the first hydraulic cavities formed with connection first through hole between central tube and lower fluid cylinder.The packer of the application embodiment can be achieved to set under ground hydraulic pressure conditions.
Description
Technical field
This application involves petroleum production engineering selective sand control field, more particularly to a kind of packer for selective sand control interlayer.
Background technology
The description of this part only provide with the relevant background information of disclosure, without form the prior art.
Well, which shakes out, easily causes the problems such as water nozzle blocks, water injection string sand buries, well-flushing is obstructed, dropping-fishing test is hampered, can not
Tested and allotment acts on, caused operation frequent, influence effectively to dispense, note is not intake and operation is frequent, effective water injection time
It is short.Secondly, well, which shakes out, causes sand card, and accident rate is high, and seriously shaking out even results in well and scrap and cannot return to normal production,
Influence the development effectiveness in oil field.
It there is no the supporting technology of maturation for well dispensing of shaking out, mainly dispensed using water injection through tubing and casing, commingled water injection, three pipes
Etc. mode, but dispensing rank is low, and dispensing effect is poor.
At present, domestic NW Hebei, Shengli Oil Field succeed in developing selective sand control, separate zone waterflooding technology.Such as《Petroleum drilling and mining
Technique》The 5th phase of volume 32,《Casing water injection well layering sand control eccentric separated-injection technology》In mention a kind of QHY341-
152 layer separating packers, the packer can be realized Casing selective sand control.But it is to need tripping in special there are problem
With tubing string is set, construction is cumbersome.
《Exploration and development》Propose《A kind of application of novel packer in selective sand control technique》, novel packer model
For RTTS221-148M or RTTS221-114M, assembly is mainly insulated by compression and anti-top assembly forms, compression packing is total
Into including compositions such as seal assembly, slips assembly, friction reversing assemblies.It is anti-to push up the wealthy anchor body of assembly bag, spring, anchor fluke, orientation block
Deng composition.In use, connection tubing string above puies forward setting height down toward projected depth, and tubing string is rotated after a few and is transferred again.Friction is changed
To friction block mountain acted in the elastic force of spring, the wiper block of centralizer is produced a frictional force with casing wall, by upper and lower two groups
Slide and set the guiding role of pin, " J " the shape groove of centralizer along central tube moves last two groups of slips and sets pin just under
The top when end movement of upper and lower two groove is to set position during well.Slips is then moved and strutted by cone upwards along cone, card
Jail has reached positioning action on internal surface of sleeve pipe.Meanwhile downlink compression packing element becomes its diameter together for upper press ring and central tube
Greatly, oil, casing annulus are just insulated, is played the role of setting.During construction, the pressure difference that oil jacket produces makes outside the anchor fluke in anti-top assembly
Swollen, anchor tool is played the role of in card jail on internal surface of sleeve pipe, and preventing, which produces instrument because of oil jacket pressure difference, moves up.Oil jacket pressure difference
After disappearance, anchor fluke retraction grappling releases.When deblocking, upper lifting pipe post is only needed, upper press ring and central tube uplink together, uncompression
The effect of packing element, packing element are just withdrawn at the same time, when two slips of centralizer set pin from central tube upper and lower two by its own resilient
When the tip motions of a " J " shape groove return to its end, cone exits slips, and slips just recycles and unfreezing.But the drawback is that cannot
Realize multistage use, and Inter-zonal packing device can not easily cause the accidents such as overhaul using slips for sand output well.
It should be noted that the introduction to technical background above be intended merely to the convenient technical solution to the application carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes the application's
Background section is set forth and thinks that above-mentioned technical proposal is known to those skilled in the art.
Utility model content
Based on foregoing prior art defect, this application provides a kind of packer, it is without special setting tool
Realize setting under low hydraulic pressure conditions, and can ensure tubing string latus rectum, easy to the tripping in of later stage separate layer water injection string.
To achieve these goals, this application provides following technical solution.
A kind of packer, including：
Top connection；
The central tube being connected with the inner wall of the top connection, it is logical that the central tube is provided with first on the wall of lower end
Hole；
The retaining outer barrel being connected with the outer wall of the top connection, is provided with the first retaining on the inner wall of the retaining outer barrel
Tooth, formed with ring cavity between the retaining outer barrel and the central tube；
The deblocking sliding sleeve being slidably arranged in the ring cavity, is provided with opening towards outside the retaining on the deblocking sliding sleeve
The groove of cylinder；
The retaining ring being contained in the groove, being provided with the outer wall of the retaining ring can be with the first locking tooth phase
The second sealed locking tooth；
The connector being arranged in the ring cavity, the connector pass through in the first shear pin and the retaining outer barrel
Wall is connected, and the outer wall of the connector towards the central tube is inwardly protruding solid described formed with step, the step-shaped top
Unseal the lower end of sliding sleeve；
The outer tube being set in outside the central tube, the upper end top of the outer tube is solid on the step, outside the outer tube
Backstop cap and lower backstop cap are arranged with wall；
The component that sets being set on the outer tube outer wall, the solid backstop cap on described in upper end top for setting component
Lower end, the upper end of the solid lower backstop cap in lower end top for setting component；
The lower fluid cylinder for being set on the outer tube outer wall and being connected by the second shear pin with the central tube, it is described
The solid lower backstop cap in upper end top of lower fluid cylinder, formed with vacuum chamber, institute between the outer tube, lower backstop cap and the lower fluid cylinder
State lower fluid cylinder and be connected with overcoat；
The lower contact being folded between the lower fluid cylinder and the central tube, the lower contact, central tube, lower fluid cylinder and outer
It is connected between set formed with the first hydraulic cavities, first hydraulic cavities with the first through hole.
Preferably, be folded with fluid cylinder between the retaining outer barrel and the outer tube, the upper end of the upper fluid cylinder with it is described
The lower end of retaining outer barrel is fixedly connected, the solid lower backstop cap in lower end top of the upper fluid cylinder.
Preferably, the retaining outer barrel is provided with the second through hole on the wall of lower end, the upper fluid cylinder, retaining outer barrel,
It is connected between outer tube and connector formed with the second hydraulic cavities, second hydraulic cavities with second through hole.
Preferably, the first dummy piston is provided with the ring cavity, first dummy piston is slidably located in described outer
Guan Shang, the inner and outer wall of first dummy piston are in sealing contact with the outer tube and the retaining outer barrel respectively.
Preferably, the outer wall outwardly convex of the outer tube forms backstop rank, and it is flat to be arranged with second on the outer wall of the outer wall
Weigh piston, the solid backstop rank in upper end top of second dummy piston；The outer tube, upper fluid cylinder, the second dummy piston and
Formed with the 3rd hydraulic cavities between upper backstop cap；The upper fluid cylinder is provided with third through-hole on the wall of lower end, and the described 3rd
Through hole is connected with the 3rd hydraulic cavities.
Preferably, the upper fluid cylinder includes first segment and is connected with the first segment and the second segment of outward bending,
The first segment is plugged between the retaining outer barrel and the outer tube；
The inside constriction of outer wall of the upper backstop cap close to upper end forms first connecting portion, the first connecting portion with it is described
The joint of upper backstop cap forms the first limited step, and the second segment is connected with the first connecting portion, the second segment
Lower end top it is solid on first limited step.
Preferably, the component that sets includes：
The lower end of the upper backstop cap is consolidated on first packing element, the first packing element top；
The first spacer ring being slidably located on the outer tube outer wall, the first spacer ring top are consolidated under first packing element
End；
The upper end of the lower backstop cap, first packing element and second glue are consolidated in second packing element, the second packing element top
The equal length of cylinder；
The upper of second packing element is consolidated on the second spacer ring being slidably located on the outer tube outer wall, the second spacer ring top
End；
3rd packing element, solid first spacer ring in upper end top of the 3rd packing element, the lower end top of the 3rd packing element solid described the
Two spacer rings；The length of 3rd packing element is more than the length of first packing element and second packing element.
Preferably, outer wall outwardly convex of the lower backstop cap close to upper end forms the second limited step, the lower backstop
Outer wall of the cap close to lower end is inwardly protruding to form the 3rd limited step, and the upper end top of the lower fluid cylinder is solid in second limiting stand
On rank, the lower end top of the outer tube is solid on the 3rd limited step.
Preferably, fixed piston is arranged with outside the central tube, the fixed piston is located in the vacuum chamber, described solid
The inner and outer wall of fixed piston is in sealing contact with the central tube and the lower fluid cylinder respectively.
Preferably, the lower fluid cylinder includes the 3rd section and the 4th section being connected and bending inwards with described 3rd section,
Described 3rd section is connected with the lower backstop cap, and the upper end top is solid on second limited step, the 4th section of sandwiched
Between the central tube and the overcoat, described 4th section of inner and outer wall is close with the central tube and the overcoat respectively
Sealing-in is touched.
Technical solution more than, the packer of the application embodiment, by outer tube, lower backstop cap and lower fluid cylinder
Between formed with predetermined vacuum level vacuum chamber, compared with conventional packer, external pressure is not transferred to lower fluid cylinder, lower liquid
Cylinder is not present during uplink due to the air in extruding vacuum chamber, causes air to be hindered lower fluid cylinder to continue uplink by compression
Situation, so as to according to well depth adjustment set pressure, it is relatively low to set pressure so that the packer of the application embodiment with
When screen casing coordinates, it can be suppressed without cementing truck, you can realize and set under relatively low hydraulic pressure.
It was verified that the latus rectum of the packer of the application embodiment is big, can meetFollowing instrument tripping in；
And designed by vacuum chamber, it can be achieved to set at low pressures；In addition, pressure-bearing effect is preferable, by setting the first balance
Piston and the second dummy piston, can make to set component and remain the trend of setting；Furthermore stopped by the first locking tooth and second
Move back the closing component structure design of tooth, it is ensured that set after component sets pressure release and do not spring back.
Other application field will become obvious according to description provided herein.The description of the utility model content and tool
Body example is only intended to the purpose illustrated, it is not intended that limitation the scope of the utility model.
Brief description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended in any way to limit model disclosed in the present application
Enclose.In addition, shape and proportional sizes of each component in figure etc. are only schematical, the understanding to the application is used to help, and
It is not the specific shape and proportional sizes for limiting each component of the application.Those skilled in the art, can under teachings of the present application
To select various possible shapes and proportional sizes to implement the application as the case may be.In the accompanying drawings：
Fig. 1 is the structure diagram of the packer of the application embodiment；
Fig. 2 is that retaining outer barrel in Fig. 1, deblocking sliding sleeve, retaining ring, connector and the part of the first shear pin assembling are put
Big structure schematic diagram；
Fig. 3 is the partial enlargement structural representation of central tube lower end in Fig. 1；
Fig. 4 is the partial enlargement structural representation of the second segment of upper fluid cylinder in Fig. 1；
Fig. 5 is the partial enlargement structural representation of the first segment of upper fluid cylinder in Fig. 1；
Fig. 6 is the partial enlargement structural representation that component is set in Fig. 1.
Embodiment
It should be noted that when a parts are referred to as " being arranged at " another parts, it can be directly another
On a parts or there may also be parts placed in the middle.When a parts are considered as " connection " another parts,
It can be directly to another parts or may be simultaneously present parts placed in the middle.Term as used herein " is hung down
Directly ", " level ", "left", "right" and similar statement are for illustrative purposes based on Figure of description, are not offered as being only
One embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field of the application is belonged to
The normally understood implication of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
The arbitrary and all combination of relevant Listed Items.
As shown in Figures 1 to 5, the application embodiment provides a kind of packer, it can include：Top connection 1, above connects
Female thread can be provided with first 1 inner wall, for being connected with top oil pipe.
As shown in figure 3, the inner wall of top connection 1 is connected with central tube 2, connection mode is threaded connection.Central tube 2 is under
First through hole 201 is provided with the wall at end.
As shown in Fig. 2, the outer wall of top connection 1 is connected with retaining outer barrel 3, specific connection mode is threaded connection.Outside retaining
The first locking tooth 301 is provided with the inner wall of cylinder 3, formed with ring cavity 302 between retaining outer barrel 3 and central tube 2.In ring cavity 302
Slip is provided with deblocking sliding sleeve 4, and deblocking sliding sleeve 4 is substantially annular in shape, it is set in outside central tube 2.Unseal and set on the outer wall of sliding sleeve 4
It is equipped with groove 401 of the opening towards retaining outer barrel 3.Retaining ring 5 is equipped with groove 401, energy is provided with the outer wall of retaining ring 5
The second locking tooth 501 to lock together with the first locking tooth 301.Connector 6 is additionally provided with ring cavity 302, connector 6 substantially can be in
Ring-type, it is set in outside central tube 2.Connector 6 is connected by the first shear pin 7 with the inner wall of retaining outer barrel 3, connector
6 towards central tube 2 outer wall it is inwardly protruding formed with step 601, step 601 push up admittedly unseal sliding sleeve 4 lower end.
With reference to shown referring to Figures 1 and 2, outer tube 8 is arranged with outside central tube 2, the upper end top of outer tube 8 is solid on step 601.
With reference to reference to shown in Fig. 1 and Fig. 6, it is arranged with backstop cap 9, lower backstop cap 10 outside outer tube 8 and sets component 11.Wherein, sit
The upper end top of sealing assembly 11 is solid to descend the upper end of backstop cap 10 admittedly on the lower end of upper backstop cap 9, the lower end top for setting component 11.
With reference to reference to shown in Fig. 1 and Fig. 3, lower fluid cylinder 12 is arranged with outside outer tube 8, lower fluid cylinder 12 passes through the second shear pin 25
It is connected with central tube 2, the upper end top of lower fluid cylinder 12 is solid in the lower end of lower backstop cap 10, outer tube 8, lower backstop cap 10 and lower fluid cylinder
Formed with vacuum chamber 13 between 12.Lower fluid cylinder 12 is connected with overcoat 14, and lower contact is folded between lower fluid cylinder 12 and central tube 2
15, formed with the first hydraulic cavities 16, the first hydraulic cavities 16 and first between lower contact 15, central tube 2, lower fluid cylinder 12 and overcoat 14
Through hole 201 is connected.
The packer of the application embodiment, has in advance by being formed between outer tube 8, lower backstop cap 10 and lower fluid cylinder 12
Determine the vacuum chamber 13 of vacuum, compared with conventional packer, external pressure is not transferred to lower fluid cylinder 12, and lower fluid cylinder 12 is in uplink
During be not present due to extruding vacuum chamber 13 in air, the feelings for causing air to be hindered lower fluid cylinder 12 to continue uplink by compression
Condition, so as to according to well depth adjustment set pressure, it is relatively low to set pressure so that the packer of the application embodiment with screen casing
During cooperation, it can be suppressed without cementing truck, you can realize and set under relatively low hydraulic pressure.
As shown in Figure 1, in one embodiment, in order to preferably realize the backstop cap 10 under the promotion of lower fluid cylinder 12, sit
The upward movement of sealing assembly 11, upper backstop cap 9 and outer tube 8, is folded with fluid cylinder 17, upper fluid cylinder between retaining outer barrel 3 and outer tube 8
17 upper end is fixedly connected with the lower end of retaining outer barrel 3, and backstop cap 10 is descended on the lower end top of upper fluid cylinder 17 admittedly.
Specifically, as shown in Figure 4 and Figure 5, upper fluid cylinder 17 is in up-small and down-big tubular, its can include first segment 1701 with
And be connected with first segment 1701 and the second segment of outward bending 1702, as shown in figure 5, first segment 1701 is plugged in retaining outer barrel
Between 3 and outer tube 8.
As shown in figure 4, outer wall inside constriction of the upper backstop cap 9 close to upper end is formed with first connecting portion 901, the first connection
Portion 901 and the joint of upper backstop cap 9 form the first limited step 902, and second segment 1702 is connected with first connecting portion 901,
The lower end top of second segment 1702 is solid on the first limited step 902.
By forming the first limited step 902 in the joint of upper backstop cap 9 and first connecting portion 901, and make fluid cylinder
The lower end top of 17 second segment 1702 is solid on the first limited step 902, so as to preferably realize the transmission of power, ensures this
Apply for setting and unseal and relatively accurately completing for the packer of embodiment.
As shown in figure 5, in one embodiment, retaining outer barrel 3 is provided with the second through hole 303 on the wall of lower end,
Formed with the second hydraulic cavities 18, the second hydraulic cavities 18 and second between upper fluid cylinder 17, retaining outer barrel 3, outer tube 8 and connector 6
Through hole 303 is connected.The first dummy piston 19 is provided with ring cavity 302, the first dummy piston 19 is slidably located on outer tube 8,
The inner and outer wall of first dummy piston 19 is in sealing contact with outer tube 8 and retaining outer barrel 3 respectively.
As shown in figure 4, the outer wall outwardly convex of outer tube 8 forms backstop rank 801, it is flat to be arranged with second on the outer wall of outer tube 8
Weigh piston 20, the solid backstop rank 801 in upper end top of the second dummy piston 20.Outer tube 8, upper fluid cylinder 17, the second dummy piston 20 and
Formed with the 3rd hydraulic cavities 21 between upper backstop cap 9.Upper fluid cylinder 17 is provided with third through-hole 1703 on the wall of lower end, and the 3rd
Through hole 1703 is connected with the 3rd hydraulic cavities 21.
By setting the first dummy piston 19 and the second dummy piston 20, when low pressure is high, pressure can promote seat
Sealing assembly 11 is in compressive state all the time；When upper pressure is high, hydraulic pressure is made by the second through hole 303 into the second hydraulic cavities 18
Used in the first dummy piston 19, so that the first dummy piston 19 can impose upward active force to outer tube 8.In this way, can be
Outer tube 8 remain the trend moved upwards, guarantee, which sets component 11, can remain the state of setting.
As shown in fig. 6, in one embodiment, setting component 11 includes：First packing element 1101, the first packing element 1101 push up
Admittedly the lower end of upper backstop cap 9；The first spacer ring 1102 being slidably located on 8 outer wall of outer tube, the solid glue in the first spacer ring 1102 top
The lower end of cylinder 1101；Second packing element 1103, the second packing element 1103 push up the upper end for descending backstop cap 10 admittedly, the first packing element 1101 and second
The equal length of packing element 1103；The second spacer ring 1104 being slidably located in outside outer tube 8, solid second packing element in the second spacer ring 1104 top
1103 upper end；3rd packing element 1105, solid first spacer ring 1102 in upper end top of the 3rd packing element 1105, the lower end of the 3rd packing element 1105
Solid second spacer ring 1104 in top；The length of 3rd packing element 1105 is more than the length of the first packing element 1101 and the second packing element 1103.
As shown in fig. 6, in one embodiment, outer wall outwardly convex of the lower backstop cap 10 close to upper end forms the second limit
Position step 1002,10 outer wall close to lower end of lower backstop cap it is inwardly protruding formed the 3rd limited step 1003, lower fluid cylinder 12 it is upper
End top is solid on the second limited step 1002, and the lower end top of outer tube 8 is solid on the 3rd limited step 1003.
As shown in Figure 1, in one embodiment, fixed piston 23 substantially annular in shape is arranged with outside central tube 2, it is fixed
Piston 23 is located in vacuum chamber 13, and the inner and outer wall of fixed piston 23 is in sealing contact with central tube 2 and lower fluid cylinder 12 respectively.Tool
Body can be, fluted all the time respectively on the inner and outer wall of fixed piston 23, and sealing ring is equipped with groove, be realized with this solid
The inner and outer wall of fixed piston 23 is in sealing contact with central tube 2 and lower fluid cylinder 12 respectively.
As shown in figures 1 to 6, in one embodiment, lower fluid cylinder 12 presents big lower tubular, it includes the 3rd section
1201 and be connected and bend inwards with the 3rd section 1201 the 4th section 1202, the 3rd section 1201 is connected with lower backstop cap 10
Connect, the upper end top is solid on the second limited step 1002, and the 4th section 1202 is folded between central tube 2 and overcoat 14, the 4th section
1202 inner and outer wall is in sealing contact with central tube 2 and overcoat 14 respectively.
The operation principle of the packer of the application embodiment is described below.
Before operation, pressure is set according to well depth and water injection pressure setting, by the packer of the application embodiment on request
G.I.H, hydraulic pressure enters the first hydraulic cavities 16 by first through hole 201 after water filling, so as to impose upward work to lower fluid cylinder 12
Firmly, the upward active force of the direction remakes for lower backstop cap 10, sets component 11, upper backstop cap 9 and outer tube 8 successively, and
It is ultimately applied on connector 6.When the upward active force is more than the shearing strength of the second shear pin 25, the second shear pin
Nail 25 is cut.
In the process, lower backstop cap 10 occurs radially to setting the upward active force that component 11 imposes and make to set component 11
Expansion, sets on the inner wall of casing so that setting component 11.Also, connector 6 continues to move up, deblocking is promoted to slide
Set 4 drives the retaining ring 5 being contained in its groove 401 to move up, so that upper second locking tooth 501 of 5 outer wall of retaining ring
It is meshed with the first locking tooth 301 being arranged on 3 inner wall of retaining outer barrel, so as to ensure that setting component 11 remains expansion shape
State does not bounce back.
When needing deblocking, the oil pipe being connected with top connection 1 is above carried, central tube 2 and retaining outer barrel 3 move upwards, sit
Sealing assembly 11 remains stationary as.When the active force above carried is more than the shearing strength of the first shear pin 7,7 quilt of the first shear pin
Cut, set component 11 rebound by elastic force return to original state realize unseal.
It was verified that the latus rectum of the packer of the application embodiment is big, can meetFollowing instrument tripping in；
And by designing vacuum chamber 13, it can be achieved to set at low pressures；In addition, pressure-bearing effect is preferable, it is flat by setting first
Weigh 19 and second dummy piston 20 of piston, can make to set component 11 and remains the trend of setting；Furthermore pass through the first locking tooth
301 and second locking tooth 501 closing component structure design, it is ensured that set after component 11 sets pressure release and do not spring back.
It should be noted that in the description of the present application, term " first ", " second " etc. are only used for description purpose and difference
Similar object, between the two and is not present sequencing, can not be interpreted as indicating or implying relative importance.In addition,
In the description of the present application, unless otherwise indicated, " multiple " are meant that two or more.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
State, many embodiments and many applications outside the example provided all will be aobvious and easy for a person skilled in the art
See.Therefore, the scope of this teaching should not be determined with reference to foregoing description, but should with reference to preceding claims and this
The four corner of the equivalent that a little claims are possessed determines.It is for comprehensive purpose, all articles and special with reference to including
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as applicant the theme is not thought of as it is disclosed
Apply for a part for theme.
Claims (10)
- A kind of 1. packer, it is characterised in that including：Top connection；The central tube being connected with the inner wall of the top connection, the central tube are provided with first through hole on the wall of lower end；The retaining outer barrel being connected with the outer wall of the top connection, is provided with the first locking tooth on the inner wall of the retaining outer barrel, Formed with ring cavity between the retaining outer barrel and the central tube；The deblocking sliding sleeve being slidably arranged in the ring cavity, described unseal are provided with opening towards the retaining outer barrel on sliding sleeve Groove；The retaining ring being contained in the groove, is provided with and can lock together with first locking tooth on the outer wall of the retaining ring The second locking tooth；The connector being arranged in the ring cavity, the inner wall phase that the connector passes through the first shear pin and the retaining outer barrel Connection, the outer wall of the connector towards the central tube are inwardly protruding solid in the deblocking formed with step, the step-shaped top The lower end of sliding sleeve；The outer tube being set in outside the central tube, the upper end top of the outer tube is solid on the step, on the outer wall of the outer tube It is arranged with backstop cap and lower backstop cap；The component that sets being set on the outer tube outer wall, the upper end top for setting component is admittedly on described under backstop cap End, the upper end of the solid lower backstop cap in lower end top for setting component；The lower fluid cylinder for being set on the outer tube outer wall and being connected by the second shear pin with the central tube, the lower liquid The solid lower backstop cap in upper end top of cylinder, formed with vacuum chamber between the outer tube, lower backstop cap and the lower fluid cylinder, under described Fluid cylinder is connected with overcoat；The lower contact being folded between the lower fluid cylinder and the central tube, the lower contact, central tube, lower fluid cylinder and overcoat it Between be connected formed with the first hydraulic cavities, first hydraulic cavities with the first through hole.
- 2. packer as claimed in claim 1, it is characterised in that be folded with upper liquid between the retaining outer barrel and the outer tube Cylinder, the upper end of the upper fluid cylinder are fixedly connected with the lower end of the retaining outer barrel, the lower end of upper fluid cylinder top it is solid it is described it is lower only Gear cap.
- 3. packer as claimed in claim 2, it is characterised in that the retaining outer barrel is provided with second on the wall of lower end Through hole, formed with the second hydraulic cavities between the upper fluid cylinder, retaining outer barrel, outer tube and connector, second hydraulic cavities with Second through hole is connected.
- 4. packer as claimed in claim 3, it is characterised in that it is provided with the first dummy piston in the ring cavity, described One dummy piston is slidably located on the outer tube, the inner and outer wall of first dummy piston respectively with the outer tube and institute It is in sealing contact to state retaining outer barrel.
- 5. packer as claimed in claim 2, it is characterised in that the outer wall outwardly convex of the outer tube forms backstop rank, institute State and the second dummy piston is arranged with the outer wall of outer wall, the solid backstop rank in upper end top of second dummy piston；It is described outer Formed with the 3rd hydraulic cavities between pipe, upper fluid cylinder, the second dummy piston and upper backstop cap；Wall of the upper fluid cylinder close to lower end On be provided with third through-hole, the third through-hole is connected with the 3rd hydraulic cavities.
- 6. packer as claimed in claim 2, it is characterised in that the upper fluid cylinder include first segment and with the first segment It is connected and the second segment of outward bending, the first segment is plugged between the retaining outer barrel and the outer tube；The inside constriction of outer wall of the upper backstop cap close to upper end forms first connecting portion, and the first connecting portion is above stopped with described The joint of gear cap forms the first limited step, and the second segment is connected with the first connecting portion, under the second segment End top is solid on first limited step.
- 7. packer as claimed in claim 1, it is characterised in that the component that sets includes：The lower end of the upper backstop cap is consolidated on first packing element, the first packing element top；The lower end of first packing element is consolidated on the first spacer ring being slidably located on the outer tube outer wall, the first spacer ring top；The upper end of the lower backstop cap, first packing element and second packing element are consolidated in second packing element, the second packing element top Equal length；The upper end of second packing element is consolidated on the second spacer ring being slidably located on the outer tube outer wall, the second spacer ring top；3rd packing element, solid first spacer ring in upper end top of the 3rd packing element, the lower end top solid described second of the 3rd packing element every Ring；The length of 3rd packing element is more than the length of first packing element and second packing element.
- 8. packer as claimed in claim 1, it is characterised in that outer wall outwardly convex shape of the lower backstop cap close to upper end Into the second limited step, outer wall of the lower backstop cap close to lower end is inwardly protruding to form the 3rd limited step, the lower fluid cylinder Upper end top it is solid on second limited step, the lower end top of the outer tube is solid on the 3rd limited step.
- 9. packer as claimed in claim 8, it is characterised in that be arranged with fixed piston, the fixation outside the central tube Piston is located in the vacuum chamber, and the inner and outer wall of the fixed piston is sealed with the central tube and the lower fluid cylinder respectively Contact.
- 10. packer as claimed in claim 9, it is characterised in that the lower fluid cylinder includes the 3rd section and with the described 3rd Section be connected and bend inwards the 4th section, described 3rd section is connected with the lower backstop cap, and the upper end top is consolidated described the On two limited steps, described 4th section is folded between the central tube and the overcoat, described 4th section of inner and outer wall It is in sealing contact with the central tube and the overcoat respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721249722.6U CN207315293U (en) | 2017-09-27 | 2017-09-27 | Packer |
Applications Claiming Priority (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671102A (en) * | 2019-10-14 | 2020-01-10 | 重庆科技学院 | Method and system for determining critical sand production pressure difference of gas well |
| CN111502594A (en) * | 2020-04-28 | 2020-08-07 | 大庆兴华天义石油钻采设备制造有限公司 | Double-tube separate injection tool capable of drilling bridge plug |
| CN113338841A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Mechanical packer |
| CN114991700A (en) * | 2022-06-27 | 2022-09-02 | 大庆市龙商科技有限公司 | High-temperature high-pressure water injection packer |
| CN115613995A (en) * | 2022-12-16 | 2023-01-17 | 山东圣颐石油技术开发有限公司 | Multi-stage low-pressure driven double-working-flow-channel packer |
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2017
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671102A (en) * | 2019-10-14 | 2020-01-10 | 重庆科技学院 | Method and system for determining critical sand production pressure difference of gas well |
| CN110671102B (en) * | 2019-10-14 | 2022-09-09 | 重庆科技学院 | Method and system for determining critical sand production pressure difference of gas well |
| CN111502594A (en) * | 2020-04-28 | 2020-08-07 | 大庆兴华天义石油钻采设备制造有限公司 | Double-tube separate injection tool capable of drilling bridge plug |
| CN111502594B (en) * | 2020-04-28 | 2024-05-10 | 大庆兴华天义石油钻采设备制造有限公司 | Double-tube separate injection tool capable of drilling bridge plug |
| CN113338841A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Mechanical packer |
| CN113338841B (en) * | 2021-06-29 | 2022-07-22 | 大庆市天顺和泰石油科技有限公司 | Mechanical packer |
| CN114991700A (en) * | 2022-06-27 | 2022-09-02 | 大庆市龙商科技有限公司 | High-temperature high-pressure water injection packer |
| CN114991700B (en) * | 2022-06-27 | 2023-11-17 | 大庆市龙商科技有限公司 | High-temperature high-pressure water injection packer |
| CN115613995A (en) * | 2022-12-16 | 2023-01-17 | 山东圣颐石油技术开发有限公司 | Multi-stage low-pressure driven double-working-flow-channel packer |
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