CN103132944B - Sand-prevention hydraulic small-diameter packer - Google Patents
Sand-prevention hydraulic small-diameter packer Download PDFInfo
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- CN103132944B CN103132944B CN201110381840.3A CN201110381840A CN103132944B CN 103132944 B CN103132944 B CN 103132944B CN 201110381840 A CN201110381840 A CN 201110381840A CN 103132944 B CN103132944 B CN 103132944B
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Abstract
The present invention relates to a kind of Sand-prevention hydraulic small-diameter packer, it is characterized by, sliding sleeve (2) is arranged on inside top connection, lower end cylinder lever connecting rod (9)；Ball seat (19) is arranged on pull bar (9) lower end；Central canal is connected between lock tube (4) and transition joint；Leather cup (6), spacer ring (8), leather cup (24) is arranged on the cylindrical of central canal (7) respectively in order, cut ring (15) and be arranged in the groove below central canal exterior boss, lead ring (13) is stuck in be cut on ring (15), and lead ring (13) connection refers to spring (14)；It is internal that joint (20) is arranged on cylinder sleeve (17), this joint (20) lower end is connected with drawing cutting ferrule (21), this packer effectively solves the difficult problem that set becomes, casing damaged well sand control and sidetracked hole and slim hole well sand control routine packer cannot enter down, meanwhile, in bigger central canal, latus rectum can meet the requirement to area of passage of the big pump extract discharge capacity.
Description
Technical field
The present invention relates to a kind of packer for oil field sand prevention well, particularly relate to a kind of Sand-prevention hydraulic small-diameter packer.
Background technology
Most domestic oil field now has been enter into mid-later development phase, due to the impact of geologic(al) factor and engineering factor, oil-water well downhole conditions constantly worsens, and part oil, well sleeve pipe occur in that damage in various degree, set damages, casing deformation well is continuously increased, and set becomes, the sand control of casing damaged well is always up a difficult problem.Conventional sand control packer cannot meet production needs, has had a strong impact on exploitation and the later stage operation in oil field.Sidetracked hole is to solve one important process of oil field later stage volume increase, and application side drilling technology can repair part casing deformation well, but sidetracked hole enters all down Φ 101.6mm sleeve pipe below position of windowing, and existing sand control packer all cannot enter down and work；Secondly for set is become, casing damaged well carries out casing repairing, but cost is relatively big, and effect is undesirable, it is easy to cause repeatedly；The sand preventing tool conventional for slim hole well cannot enter down and work.Chemical sand control technique is to solve a kind of sand-preventing process of set change, casing damaged well and sidetracked hole and slim hole well, but to there is also the sand control life short simultaneously, and artificial borehole wall intensity is low, it is impossible to meet the difficult problems such as the production of big pump extract and big pressure reduction production.
For the defect overcoming above-mentioned prior art to exist, the technical problem to be solved in the present invention is to provide a kind of Sand-prevention hydraulic small-diameter packer, solves a sand control difficult problem for set change, casing damaged well and sidetracked hole and slim hole well.
Utility model summary of the invention
For the defect overcoming above-mentioned prior art to exist, the technical problem to be solved in the present invention is to provide a kind of Sand-prevention hydraulic small-diameter packer, solves a sand control difficult problem for set change, casing damaged well and sidetracked hole and slim hole well.
For solving above-mentioned technical problem, Sand-prevention hydraulic small-diameter packer of the present invention is made up of releasing gadget, setting mechanism, retaining mechanism, bindiny mechanism,
Above-mentioned releasing gadget is made up of sliding sleeve 2, lock tube 4, lock dog 5, it is achieved with the giving up of top tubing string after packer set；
Above-mentioned setting mechanism is made up of upper leather cup 6, central canal 7, spacer ring 8, pull bar 9, upper piston seat 10, fluid cylinder 11, bearing 12, lower piston seat 16, cylinder sleeve 17, ball seat 19, down cup 24, it is achieved packer setting；
Retaining mechanism by lead ring 13, refer to spring 14, cut ring 15 and form, being used for ensureing after packer set will not deblocking automatically；
Bindiny mechanism by top connection 1, transition joint 18, lower contact 20, draw cutting ferrule 21, snap ring 22 forms, it is ensured that connection between packer and top tubing string and bottom tubing string and support；
Wherein:
It is internal that this sliding sleeve 2 is arranged on top connection 1, threadeds with pull bar 9 in this sliding sleeve 2 bottom, and when giving up, sliding sleeve 2 moves down release lock dog 5；
This lock tube 4 is arranged on the outside of top connection 1, and described lock dog 5 fixes top connection 1 and lock tube 4, and when giving up, lock dog 5 is released, and top connection 1 and lock tube 4 disengage realization and give up；
This ball seat 19 is arranged on pull bar 9 bottom, and when pitching is suppressed, steel ball drops on and acts the effect of building the pressure on ball seat 19；
Above-mentioned central canal 7 is threaded between transition joint 18 and lock tube 4, acts primarily as support and interconnection function, also provides carrier for the installation of each parts simultaneously；
On this, leather cup 6, spacer ring 8, down cup 24 are arranged on the cylindrical of central canal 7 respectively in order, and time setting, upper and lower two leather cups 6,24 extrude spacer ring 8 to centre, and leather cup spreading seals；
This upper piston seat 10 is arranged on outside down cup 24 lower central pipe 7 and connects with bearing 12, and bearing 12 is threadedly secured in the middle part of central canal 7 on the boss of cylindrical, moves extruding down cup 24 time setting on hydraulic drive upper piston seat 10, and bearing 12 and central canal 7 keep fixing；
This is cut ring 15 and is arranged in the groove below central canal 7 exterior boss, lead ring 13 is stuck in be cut on ring 15, and lead ring 13 is threadeded with finger spring 14, cuts ring 15, lead ring 13, refers to that spring 14 is connected with each other, being fixed on the cylindrical of central canal 7, the setting spring of finger afterwards 14 plays locking function with fluid cylinder 11 female thread；
This fluid cylinder 11 is arranged on the outside of central canal 7, threadeds with upper piston seat 10 in this fluid cylinder 11 upper end, threadeds with lower piston seat 16 in this fluid cylinder 11 lower end, and setting rear fluid cylinder 11 moves, and fluid cylinder 11 female thread is locked with finger spring 14；
This lower piston seat 16 lower end connects cylinder sleeve 17, time setting, hydraulic drive lower piston seat 16 moves, and drives simultaneously and moves on fluid cylinder 11；
Above-mentioned transition joint 18 is arranged between cylinder sleeve 17 and ball seat 19, threadeds with central canal 7 in this transition joint 18 upper end, and this transition joint 18 lower end is connected with lower contact 20, and this transition joint 18 is for fixed center pipe 7, and is connected with lower contact 20；
It is internal that this lower contact 20 is arranged on cylinder sleeve 17, threaded with drawing cutting ferrule 21 in this lower contact 20 lower end, snap ring 22 is arranged in the groove drawn within cutting ferrule 21, support force effect when lower contact 20 lift pipe string is pressed down, draws cutting ferrule 21 simultaneously and snap ring 22 ensures to dock smoothly with bottom tubing string.
Above-mentioned pull bar 9 and central canal 7, fluid cylinder 11 three are concentric, it is possible to ensure the normally setting of packer and locking.
Between above-mentioned sliding sleeve 2 top and top connection 1, O-ring seal 3 is set, between this sliding sleeve 2 bottom and central canal 7, O-ring seal 23 is set；Between described lower piston seat 16 and central canal 7, O-ring seal 25 is set, between this lower piston seat 16 and cylinder sleeve 17, O-ring seal 26 is set；Arranging O-ring seal 27 between described transition joint 18 and cylinder sleeve 17, O-ring seal acts primarily as sealing function during hydraulic pressure.
Above-mentioned shear pin 28 fixes cylinder sleeve 17 and lower contact 20, plays effect against pressure when pressing under tubing string.
After adopting such technical scheme, Sand-prevention hydraulic small-diameter packer of the present invention has latus rectum in bigger central canal can meet the requirement to area of passage of the big pump extract discharge capacity, having the feature that diameter is little, it is possible to resolve the sand control difficult problem that when set becomes casing damaged well, sidetracked hole and slim hole well sand control, routine packer cannot enter down, it is simple that this packer has technique simultaneously, easy to operate, can property degree high, consuming time short, efficiency is high, the features such as cost is low, satisfactory for result.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail:
Fig. 1 is the structural representation of Sand-prevention hydraulic small-diameter packer of the present invention.
Detailed description of the invention
The operation principle of Sand-prevention hydraulic small-diameter packer of the present invention is: when sand control construction pressure break back-up sand enters sand control packer under needing after completing, by entering this packer under downhole operations code to after design attitude, pitching, voltage stabilizing during 8MPa is suppressed on ground, realize setting, when continuing to suppress 15MPa, it is achieved give up, thus completing a whole set of pressure crack filling anti-sand technique.This packer work process realizes mainly through setting mechanism and releasing gadget.Wherein setting function realizes mainly through setting mechanism, and function of giving up realizes mainly through releasing gadget.
As shown in Figure 1, the work process of the setting function of Sand-prevention hydraulic small-diameter packer of the present invention is, first packer pitching is suppressed, suppress voltage stabilizing 5 minutes during to 8MPa, packer setting, setting procedure is: the circular hole of liquid pull bar 9 bottom enters the interior intracavity of pull bar 9 and central canal 7, then a part of liquid arrives upper piston seat 10 by the circular hole in the middle part of central canal 7 and extrudes the upper piston seat 10 extruding down cup 24 upper piston seat 10 simultaneously that moves upward and drive fluid cylinder 11 to move upward, lower piston seat 16 promotes fluid cylinder 11 to move upward, fluid cylinder 11 promotes upper piston seat 10 to extrude down cup 24, simultaneously because fluid cylinder 11 moves upward, fluid cylinder 11 lower thread is locked thus realizing setting function with finger spring 14.
As shown in Figure 1, the work process of the function of giving up of Sand-prevention hydraulic small-diameter packer of the present invention is, pitching makes steel ball close ball seat 19, ground is suppressed, when pressure rises to 15MPa, the pin of fixing sliding sleeve 2 is cut off, and sliding sleeve 2 moves down under stress, lock dog 5 ejects and makes top connection 1 and lock tube 4 separate simultaneously, thus realizing the function given up.
Claims (3)
1. a Sand-prevention hydraulic small-diameter packer, is made up of releasing gadget, setting mechanism, retaining mechanism, bindiny mechanism,
Described releasing gadget is made up of sliding sleeve (2), lock tube (4), lock dog (5)；
Described setting mechanism is made up of upper leather cup (6), central canal (7), spacer ring (8), pull bar (9), upper piston seat (10), fluid cylinder (11), bearing (12), lower piston seat (16), cylinder sleeve (17), ball seat (19), down cup (24)；
Retaining mechanism by lead ring (13), refer to spring (14), cut ring (15) and form；
Bindiny mechanism by top connection (1), transition joint (18), lower contact (20), draw cutting ferrule (21), snap ring (22) forms；
It is characterized in that:
It is internal that described sliding sleeve (2) is fixed on top connection (1) by shear pin, threadeds with pull bar (9) in this sliding sleeve (2) bottom；
Described lock tube (4) is arranged on the outside of top connection (1), and described lock dog (5) fixes top connection (1) and lock tube (4)；
Described ball seat (19) is arranged on pull bar (9) bottom；
Described central canal (7) is threaded between transition joint (18) and lock tube (4)；
Described upper leather cup (6) is installed on the cylindrical of central canal (7), spacer ring (8) is arranged on the cylindrical of lower central pipe (7) of leather cup (6), and down cup (24) is arranged on the cylindrical of spacer ring (8) lower central pipe (7)；
Described upper piston seat (10) is arranged on down cup (24) lower central pipe (7) and connects with bearing (12) outward, and bearing (12) is threadedly secured on the boss of central canal (7) middle part cylindrical；
Described ring (15) of cutting is arranged in the groove below central canal (7) exterior boss, and lead ring (13) is stuck in be cut on ring (15), and lead ring (13) is threadeded with finger spring (14)；
Described fluid cylinder (11) is arranged on the outside of central canal (7), threadeding with upper piston seat (10) in this fluid cylinder (11) upper end, threadeds with lower piston seat (16) in this fluid cylinder (11) lower end；
Described lower piston seat (16) lower end connects cylinder sleeve (17)；
Described transition joint (18) is arranged between cylinder sleeve (17) and ball seat (19), threadeding with central canal (7) in this transition joint (18) upper end, this transition joint (18) lower end is connected with lower contact (20)；
It is internal that described lower contact (20) is arranged on cylinder sleeve (17), fixed by shear pin (28) between lower contact (20) and cylinder sleeve (17), threadeding with drawing cutting ferrule (21) in this lower contact (20) lower end, snap ring (22) is arranged on and draws in the groove that cutting ferrule (21) is internal.
2. packer according to claim 1, is characterized in that: described pull bar (9) and central canal (7), fluid cylinder (11) three are concentric.
3. packer according to claim 1, is characterized in that: arrange O-ring seal (23) between sliding sleeve (2) bottom and central canal (7)；Between described lower piston seat (16) and central canal (7), O-ring seal (25) is set, between this lower piston seat (16) and cylinder sleeve (17), O-ring seal (26) is set；O-ring seal (27) is set between described transition joint (18) and cylinder sleeve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110381840.3A CN103132944B (en) | 2011-11-25 | 2011-11-25 | Sand-prevention hydraulic small-diameter packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110381840.3A CN103132944B (en) | 2011-11-25 | 2011-11-25 | Sand-prevention hydraulic small-diameter packer |
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| Publication Number | Publication Date |
|---|---|
| CN103132944A CN103132944A (en) | 2013-06-05 |
| CN103132944B true CN103132944B (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110381840.3A Active CN103132944B (en) | 2011-11-25 | 2011-11-25 | Sand-prevention hydraulic small-diameter packer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437734B (en) * | 2013-09-22 | 2016-09-28 | 中国石油集团川庆钻探工程有限公司 | A kind of packer construction |
| CN103590780A (en) * | 2013-11-27 | 2014-02-19 | 中国石油化工股份有限公司 | High-temperature high-pressure large-drift-diameter hydraulic sleeve packer |
| CN108872471A (en) * | 2017-05-08 | 2018-11-23 | 中国石油化工股份有限公司 | A kind of the increasing hole solidification function sand prevention testing device and method of simulated formation |
| CN109869121B (en) * | 2019-03-18 | 2021-02-19 | 中国石油化工股份有限公司 | Mechanical sand prevention process for small cased well |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844419Y (en) * | 2005-10-27 | 2006-12-06 | 大庆市萨尔图区登峰石油构件厂 | Minor diameter companding sand control card pressure break packer |
| CN201024941Y (en) * | 2007-04-04 | 2008-02-20 | 大港油田集团有限责任公司 | Sifting tube suspender |
| CN201344013Y (en) * | 2009-01-07 | 2009-11-11 | 张忠江 | Small-diameter packer |
| CN201443351U (en) * | 2009-05-27 | 2010-04-28 | 胜利油田金岛实业有限责任公司 | Novel packer |
| CN201778744U (en) * | 2010-07-22 | 2011-03-30 | 中国石油天然气股份有限公司 | Oil well releasing packer |
| CN202381026U (en) * | 2011-11-25 | 2012-08-15 | 中国石油天然气股份有限公司 | Hydraulic small-diameter packer for sand prevention |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AR067941A1 (en) * | 2008-08-14 | 2009-10-28 | Carro Gustavo Ignacio | HYDRAULIC PACK (PACKER) FOR PITCHED WELLS. |
-
2011
- 2011-11-25 CN CN201110381840.3A patent/CN103132944B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844419Y (en) * | 2005-10-27 | 2006-12-06 | 大庆市萨尔图区登峰石油构件厂 | Minor diameter companding sand control card pressure break packer |
| CN201024941Y (en) * | 2007-04-04 | 2008-02-20 | 大港油田集团有限责任公司 | Sifting tube suspender |
| CN201344013Y (en) * | 2009-01-07 | 2009-11-11 | 张忠江 | Small-diameter packer |
| CN201443351U (en) * | 2009-05-27 | 2010-04-28 | 胜利油田金岛实业有限责任公司 | Novel packer |
| CN201778744U (en) * | 2010-07-22 | 2011-03-30 | 中国石油天然气股份有限公司 | Oil well releasing packer |
| CN202381026U (en) * | 2011-11-25 | 2012-08-15 | 中国石油天然气股份有限公司 | Hydraulic small-diameter packer for sand prevention |
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| CN103132944A (en) | 2013-06-05 |
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