CN107989570A - A kind of sump packer - Google Patents
A kind of sump packer Download PDFInfo
- Publication number
- CN107989570A CN107989570A CN201810017625.7A CN201810017625A CN107989570A CN 107989570 A CN107989570 A CN 107989570A CN 201810017625 A CN201810017625 A CN 201810017625A CN 107989570 A CN107989570 A CN 107989570A
- Authority
- CN
- China
- Prior art keywords
- inner tube
- piston
- giving
- ring
- setting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims description 20
- 210000000078 claw Anatomy 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
Abstract
A kind of sump packer, is made of top connection (1), locking assembly, seal assembly and anchor.Wherein, locking assembly includes four retaining mechanism, setting mechanism, solution sealing mechanism, releasing gadget parts.The sump packer of the present invention is used hydraulic base sealed and given up, salvaged using conventional tool, upper lifting pipe post unseals and carries packer accessory mechanism in one's power, with big orifice, it is setting firmly, it is safe and reliable, the advantages of compact-sized, meet the requirement of various straight wells, high angle hole, horizontal well suspension to kit matching size and technological measure extensively.
Description
Technical field
The present invention relates to packer, more particularly to a kind of sump packer.
Background technology
Horizontal well and high angle hole are increase wellbore and oil reservoir contact area, and the one kind for improving reservoir recovery has efficacious prescriptions
Method.This oil well type is widely applied in the higher offshore oilfield of cost of winning and tidal zone oilfield.Horizontal well compares straight well at the same time
For, the distribution of crustal stress is more uneven, and this considerably increases the probability of sand production.In order to realize to horizontal well sand control,
Generally use metal wool sand screen in the prior art, i.e., build vapour packer hanging metal cotton sand screen sand control with giving up.Due to oil
Well shakes out seriously, when turning discontinuous running, it is often necessary to huge discharge sand washing.Conventional packer can not be realized big since interior latus rectum is small
Discharge capacity sand washing, thus limit the application of metal wool sand screen.Meanwhile in the packer of the prior art, there are packer not
It is setting to occur as soon as the risk given up.
The content of the invention
It is an object of the invention to provide a kind of sump packer, has the advantages of big orifice, safe and reliable, meets straight
Well, high angle hole, the requirement for horizontally suspending sand screen.
The purpose of the present invention is achieved by the following technical programs：
The present invention provides a kind of sump packer, is made of top connection, locking assembly, seal assembly and anchor.Its
In, locking assembly includes four retaining mechanism, setting mechanism, solution sealing mechanism, releasing gadget parts.Inside the top connection with it is interior
Pipe screw thread connects, and outside is connected with external pipe thread, and the plunger shaft of annular, one He of piston are formed between said inner tube and the outer tube
Piston two is sealingly disposed in the plunger shaft, is set in the corresponding inner tube of plunger shaft between the piston one and the piston two
There is the through hole communicated with plunger shaft, hydraulic oil enters plunger shaft by the through hole.Two lower part of piston is equipped with connection successively
Ring and retainer ring, the connection ring are connected with the piston thread, closing piece and are separately positioned on the piston one and the piston
Between two and between the connection ring and retainer ring.The retainer ring lower part is connected with setting pipe screw thread, and fishing head is located at institute
State between inner tube and the setting pipe, the fishing head bottom connects with upper portion inner tube and solution big envelope, and the solution big envelope is located at institute
State in upper portion inner tube, both are connected by unsealing shear pin.The embedding external screw thread of the upper portion inner tube outer surface of upper tongue tooth and lock ring
The embedding internal thread composition ratcheting setting locking of stepping of tooth, groove are engaged with the groove pawl of fishing head, and the lock ring is arranged on lock ring seat
Interior, in the step of the setting pipe, a part is located at cylinder sleeve and the top for the lock ring and a lock ring seat part
Between interior, the cylinder sleeve and the setting pipe connect, and deblocking closing piece set is equipped between the upper portion inner tube lower part and the cylinder sleeve,
Deblocking closing piece is equipped with the locked groove of the deblocking closing piece set, its upper part is headed into the upper portion inner tube.In the solution big envelope, top
Heart pipe conciliates block block set and connects with center pipe connector sleeves, the center pipe connector sleeves other end connection lower part inner tube and lower part
Outer tube, is fixed between the cylinder sleeve and the center pipe connector sleeves and the lower outer tubes by setting shear pin.With upper-part phase
Connect, interact, constitute the setting, locking, solution sealing mechanism.
Further, piston of giving up is located inside said inner tube, and by giving up, shear pin is fixed with said inner tube, described to give up
Piston base is inwardly projecting inclined-plane, and the piston base outer circumferential surface connection of giving up, which is given up, controls set, and lower part connects set of giving up,
Collectively constitute the releasing gadget.The set lower end of giving up is provided with screwed claw of 6 valves with left-turn spiral, and the set of giving up is by cutting
Follow closely and give up control set connection, control set piston that can be given up of giving up is open-top.
Further, the cylinder sleeve lower end connecting seat seal ring, setting ring lower part and packing element, packing element spacer ring, packing element successively phase
Connect the composition seal assembly.
Further, on upper cone part connect respectively with the packing element and the lower outer tubes, lower tapered surface with it is described
The slips conical surface is engaged, and another conical surface of slips is engaged with the upper conical surface of lower cone, slip sleeve and the upper cone, described
The outer lug boss of lower cone connects, and is made of the flat spring being distributed between the slips and the slip sleeve, forms the grappling
Assembly.
The sump packer of the present invention is compared with conventional back-off packer, and there are advantages below：(1) can avoid carrying
Before give up problem.The piston of giving up of the present invention uses the form on inclined-plane, can guarantee that the pressure difference for work of giving up more than setting required
Pressure difference, gives up, it is ensured that process of giving up is complete in packer set so as to only continue pressurization after setting completion and could realize
Into rear progress.(2) piston of giving up of ramp type is used, different pitchings can also realize smoothly giving up for packer.(3) locking device
Coordinate with lock ring, lock ring is unidirectionally moved, reverse locking, compresses packing element and slips, prevent from springing back.(4) multistage lock is set
Block assembly, ensures setting, deblocking process safe and reliable.(5) have compared with big orifice, meet various straight wells, High angle extensively
Well, horizontal well hang the requirement to kit matching size and technological measure.(6) it is compact-sized, it is easy to assembly, it is easy to add
Work.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of sump packer of the present invention.
In figure：1- top connections；2- inner tubes；3- outer tubes；4- pistons；5- pistons；6- closing pieces；7- connection rings；8- closing pieces；9- consolidates
Determine ring；10- fishing heads；11- gives up piston；The setting pipes of 12-；13- upper portion inner tubes；14- lock rings；15- lock ring seats；16- cylinder sleeves；
17- solves big envelope；18- unseals closing piece set；19- unseals closing piece；20- centers pipe connector sleeves；21-, which gives up, controls set；22- gives up set；
23- lower parts inner tube；24- lower outer tubes；The setting rings of 25-；26- packing element spacer rings；27- packing elements；28- upper cones；29- slip sleeves；
30- slips；31- flat springs；32- lower cones.
Embodiment
The embodiment of the present invention is illustrated below in conjunction with the accompanying drawings.
According to Fig. 1, sump packer of the invention is made of top connection 1, locking assembly, seal assembly and anchor.
Wherein, locking assembly includes four retaining mechanism, setting mechanism, solution sealing mechanism, releasing gadget parts.The inside of top connection 1 with it is interior
Pipe 2 is threadedly coupled, and outside is threadedly coupled with outer tube 3, and the plunger shaft of annular, piston 4 and piston are formed between inner tube 2 and outer tube 3
5 are sealingly disposed in plunger shaft, and the corresponding inner tube of plunger shaft between piston 4 and 5 is equipped with the through hole communicated with plunger shaft, liquid
Pressure oil enters plunger shaft by through hole.5 lower part of piston is equipped with connection ring 7 and retainer ring 9 successively, and connection ring 7 connects with 5 screw thread of piston
Connect, closing piece 6 and 8 is separately positioned between piston 4 and 5 and between connection ring 7 and retainer ring 9.9 lower part of retainer ring and setting pipe
12 are threadedly coupled, and fishing head 10 is between inner tube 2 and setting pipe 12,10 bottom of fishing head and upper portion inner tube 13 and solution big envelope 17
Connect, solution big envelope 17 is located in upper portion inner tube 13, both are connected by unsealing shear pin.13 outer surface of upper tongue tooth of upper portion inner tube
The internal thread composition ratcheting setting locking of stepping embedding with 14 tooth of lock ring of embedding external screw thread, groove are engaged with the groove pawl of fishing head 10, lock
Ring 14 is arranged in lock ring seat 15, and in the step of setting pipe 12, a part is located at cylinder for lock ring 14 and the part of lock ring seat 15
Between set 16 and upper portion inner tube 13, cylinder sleeve 16 and setting pipe 12 connect, and deblocking is equipped between 13 lower part of upper portion inner tube and cylinder sleeve 16
Closing piece set 18, the locked groove of deblocking closing piece set 18 is interior to be equipped with deblocking closing piece 19, and its upper part is headed into upper portion inner tube 13.Solution big envelope 17,
Central upper portion pipe 13 conciliates block block set 18 and connects with center pipe connector sleeves 20, under the connection of 20 other end of center pipe connector sleeves
Portion's inner tube 23 and lower outer tubes 24, are fixed between cylinder sleeve 16 and center pipe connector sleeves 20 and lower outer tubes 24 by setting shear pin.
It is connected with each other, is interacted with upper-part, constitutes setting, locking, solution sealing mechanism.Piston 11 of giving up is located inside inner tube 2, leads to
Cross shear pin of giving up to fix with inner tube 2, inwardly projecting inclined-plane is in 22 bottom of piston of giving up, 22 bottom outer circumferential surface connection of piston of giving up
Control of giving up covers 21, and lower part connects set 22 of giving up, and collectively constitutes releasing gadget.Give up set 22 lower ends be provided with the 6 left-handed spiral shells of valve band
The screwed claw of rotation, the set of giving up are open-top by shear pin and control set connection of giving up, control set piston that can be given up of giving up.
16 lower end connecting seat seal ring 25 of cylinder sleeve, setting 25 lower part of ring connect successively with packing element 27, packing element spacer ring 26, packing element 27
Form seal assembly.Part connects with packing element 27 and lower outer tubes 24 respectively on upper cone 28, lower tapered surface and 30 conical surface of slips
It is engaged, 30 another conical surface of slips is engaged with the upper conical surface of lower cone 32, slip sleeve 29 and upper cone 28, lower cone 32
Outer lug boss connects, and is made of the flat spring 31 being distributed between slips 30 and slip sleeve 29, forms anchor.
The sump packer mechanism of the present invention is as follows.
It is setting：By, to after design position, from oil pipe input steel ball, (High angle, horizontal well are without throwing under sump packer
Ball), oil pipe small displacement is sprained pressure, is suppressed numerical value and is followed successively by 5MPa, 8MPa, 10MPa, 12MPa, 15MPa, middle each voltage stabilizing 3 minutes.
Hydraulic pressure is entered in the plunger shaft between piston 4 and piston 5 by the through hole of inner tube 2, is acted on piston 4 and 5, is made on piston 4
Move, piston 5 moves down, and promotes setting pipe 12, and setting pipe 12 is moved down relative to fishing head 10, promotes lock ring 14, lock ring set
15th, cylinder sleeve 16 moves down, and setting shear pin is cut, so as to promote setting ring 25, packing element 27, packing element 26, upper centrum 28 overall
Move down, slip sleeve 29 is outwards opened by the active force footpath of upper cone, completes the grappling of slip sleeve 29 and casing.Continue to pressurize,
Packing element 27 is compressed, and insulates the annular space of oil pipe and casing, realizes sealing.Lock ring 14 is transported downwards on lock ring set 15 at the same time
It is dynamic, realize locking, prevent packing element from bouncing back.
Give up：When pressure reaches certain value, piston 11 of giving up is stressed to be moved down relative to inner tube 2, shear pin of giving up
Cut, control set 21 of giving up is given up, and piston 11 is open-top, and the screwed claw for set 22 of giving up unclamps, and realization is given up.
Deblocking：Tripping in fishing tool drags for fishing head 10, upper lifting pipe post, and fishing head 10 is moved up relative to inner tube 2, and deblocking is cut
Nail is cut.The bottom boss of fishing head 10 heads into 14 internal diameter of lock ring, and lock ring 14 departs from the embedding screw thread of 13 tooth of upper portion inner tube, realizes
Deblocking.Continue upper lifting pipe post, fishing head 10 drives setting pipe 12, cylinder sleeve 16, setting ring 25 to move up.Packing element 27 loses pressure
Contracting power, voluntarily restores to the original state；28 uplink of upper cone, slips 30, which loses, to be made and bounces back under spring leaf effect, is departed from casing
Wall, packer unseal completely, you can smoothly rise.
Claims (4)
1. a kind of sump packer, is made of top connection (1), locking assembly, seal assembly and anchor, wherein, locking is total
Into including four retaining mechanism, setting mechanism, solution sealing mechanism, releasing gadget parts, the top connection (1) is internal with inner tube (2)
It is threadedly coupled, outside is threadedly coupled with outer tube (3), and the plunger shaft of annular is formed between said inner tube (2) and the outer tube (3),
Piston (4) and piston (5) are sealingly disposed in the plunger shaft, the corresponding inner tube of plunger shaft between the piston (4) and (5)
The through hole communicated with plunger shaft is equipped with, hydraulic oil enters plunger shaft by the through hole, and piston (5) lower part is equipped with successively
Connection ring (7) and retainer ring (9), the connection ring (7) are threadedly coupled with the piston (5), and closing piece (6) and (8) are set respectively
Between the piston (4) and (5) and between the connection ring (7) and retainer ring (9), retainer ring (9) lower part and seat
Tube sealing (12) is threadedly coupled, and fishing head (10) is located between said inner tube (2) and the setting pipe (12), the fishing head (10)
Bottom connects with upper portion inner tube (13) and solution big envelope (17), and the solution big envelope (17) is located in the upper portion inner tube (13), both
Connected by unsealing shear pin, upper portion inner tube (13) the embedding external screw thread of outer surface of upper tongue tooth and the embedding internal thread of lock ring (14) tooth
The ratcheting setting locking of stepping is formed, groove is engaged with the groove pawl of fishing head (10), and the lock ring (14) is arranged on lock ring seat
(15) in, the lock ring (14) and the lock ring seat (15) part are in the step of the setting pipe (12), a part of position
Between cylinder sleeve (16) and the upper portion inner tube (13), the cylinder sleeve (16) and the setting pipe (12) connect, in the top
Manage and deblocking closing piece set (18) is equipped between (13) lower part and the cylinder sleeve (16), be equipped with the locked groove of the deblocking closing piece set (18)
Closing piece (19) is unsealed, its upper part is headed into the upper portion inner tube (13), the solution big envelope (17), central upper portion pipe (13) and deblocking
Closing piece set (18) connects with center pipe connector sleeves (20), center pipe connector sleeves (20) other end connection lower part inner tube (23)
With lower outer tubes (24), pass through seat between the cylinder sleeve (16) and the center pipe connector sleeves (20) and the lower outer tubes (24)
Envelope shear pin is fixed, and is connected with each other with upper-part, is interacted, and constitutes the setting, locking, solution sealing mechanism.
2. sump packer according to claim 1, it is characterised in that：Piston (11) of giving up is located at said inner tube (2) inside, leads to
It is fixed to cross give up shear pin and said inner tube (2), piston of giving up (22) bottom is inwardly projecting inclined-plane, the piston of giving up
(22) outer circumferential surface connection in bottom, which is given up, controls set (21), and lower part connects set (22) of giving up, collectively constitutes the releasing gadget, described
Set (22) lower end of giving up is provided with screwed claw of 6 valves with left-turn spiral, which, should by shear pin and control set connection of giving up
The control set piston that can be given up of giving up is open-top.
3. sump packer according to claim 1, it is characterised in that：Cylinder sleeve (16) the lower end connecting seat seal ring (25), seat
Seal ring (25) lower part connects successively with packing element (27), packing element spacer ring (26), packing element (27) forms the seal assembly.
4. sump packer according to claim 1, it is characterised in that：On upper cone (28) part respectively with the packing element (27)
Connect with the lower outer tubes (24), lower tapered surface is engaged with the slips (30) conical surface, another conical surface of the slips (30)
It is engaged with the upper conical surface of lower cone (32), slip sleeve (29) and the upper cone (28), the outer lug boss of the lower cone (32)
Connect, be made of the flat spring (31) being distributed between the slips (30) and the slip sleeve (29), it is total to form the grappling
Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017625.7A CN107989570B (en) | 2018-01-09 | 2018-01-09 | Sand setting packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017625.7A CN107989570B (en) | 2018-01-09 | 2018-01-09 | Sand setting packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107989570A true CN107989570A (en) | 2018-05-04 |
| CN107989570B CN107989570B (en) | 2024-04-12 |
Family
ID=62040684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810017625.7A Active CN107989570B (en) | 2018-01-09 | 2018-01-09 | Sand setting packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107989570B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117309A1 (en) * | 2001-02-15 | 2002-08-29 | Brett Guillory | Hydraulically activated selective circulating/reverse circulating packer assembly |
| CN2533256Y (en) * | 2002-02-20 | 2003-01-29 | 孔利生 | Suspended packer |
| CN102409990A (en) * | 2011-12-26 | 2012-04-11 | 中国石油集团渤海钻探工程有限公司 | Positioning hanger |
| CN203008864U (en) * | 2012-12-21 | 2013-06-19 | 中国石油集团渤海钻探工程有限公司 | Advance window-opening hanger for multilateral well |
| CN203783520U (en) * | 2014-01-11 | 2014-08-20 | 中国石油化工股份有限公司 | Large-diameter releasing hanging packer |
| CN204186329U (en) * | 2014-10-19 | 2015-03-04 | 中国石油集团渤海钻探工程有限公司 | Band fluid cylinder expansion pipe hanger |
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| WO2016078181A1 (en) * | 2014-11-17 | 2016-05-26 | 杰瑞能源服务有限公司 | Coiled tubing velocity string and method for gas recovery by liquid unloading |
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-
2018
- 2018-01-09 CN CN201810017625.7A patent/CN107989570B/en active Active
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|---|---|---|---|---|
| US20020117309A1 (en) * | 2001-02-15 | 2002-08-29 | Brett Guillory | Hydraulically activated selective circulating/reverse circulating packer assembly |
| CN2533256Y (en) * | 2002-02-20 | 2003-01-29 | 孔利生 | Suspended packer |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107989570B (en) | 2024-04-12 |
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