CN202381026U - Hydraulic small-diameter packer for sand prevention - Google Patents
Hydraulic small-diameter packer for sand prevention Download PDFInfo
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- CN202381026U CN202381026U CN2011204760689U CN201120476068U CN202381026U CN 202381026 U CN202381026 U CN 202381026U CN 2011204760689 U CN2011204760689 U CN 2011204760689U CN 201120476068 U CN201120476068 U CN 201120476068U CN 202381026 U CN202381026 U CN 202381026U
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- sleeve
- packer
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Abstract
The utility model relates to a hydraulic small-diameter packer for sand prevention, which is characterized in that a sliding sleeve (2) is mounted inside an upper joint, the lower end of the sliding sleeve is connected with a pull rod (9), a ball seat (19) is mounted at the lower end of the pull rod (9), a central tube is connected between a lock sleeve (4) and an intermediate joint, a leather cup (6), a spacer ring (8) and a leather cup (24) are respectively and sequentially mounted on the outer circle of the central tube (7), a shear ring (15) is mounted in a groove below an external boss of the central tube, a guide ring (13) is clamped on the shear ring (15) and connected with a finger spring (14), a joint (20) is mounted inside a cylinder sleeve (17), and the lower end of the joint (20) is connected with a guide clamp sleeve (21). The packer effectively solves the problem that a conventional packer for sand prevention of a casing deformation well, a casing damage well, a side-tracked well and a small-hole well cannot be tripped in, and the requirement of large liquid pumping displacement on overflow area can be met by the aid of a large drift diameter of the central pipe.
Description
Technical field
The utility model relates to a kind of packer that is used for the oil field sand prevention well, particularly relates to a kind of sand control and uses the hydraulic pressure pony packer.
Background technology
The most domestic oil field has got into the exploitation middle and later periods at present; Because the influence of geologic(al) factor and engineering factor, the oil-water well downhole conditions constantly worsens, and damage has in various degree appearred in part oil, well sleeve pipe; Cover decreases, casing deformation well constantly increases, and cover becomes, the sand control of casing damaged well is a difficult problem always.Conventional sand control packer can't satisfy the production needs, has had a strong impact on Oilfield developing and later stage operation.Sidetracked hole is to solve important process of oil field later stage raising the output, and the application side drilling technology can be repaired the part casing deformation well, yet sidetracked hole all is lowered to Φ 101.6mm sleeve pipe windowing below the position, and existing sand control packer all can't be lowered to and work; Secondly be that cover change, casing damaged well are carried out the sleeve pipe reparation, but cost is bigger, effect is undesirable, causes easily repeatedly; The sand preventing tool conventional for slim hole well can't be lowered to and work.Chemical sand control technology is a kind of sand-preventing process of solution cover change, casing damaged well and sidetracked hole and slim hole well, but it is short also to exist the sand control life simultaneously, and artificial borehole wall intensity is low, can not satisfy difficult problems such as big pump extract production and big pressure reduction production.
The utility model content
For overcoming the defective that above-mentioned prior art exists, the technical problem that the utility model will solve provides a kind of sand control and uses the hydraulic pressure pony packer, solves the sand control difficult problem of cover change, casing damaged well and sidetracked hole and slim hole well.
For solving the problems of the technologies described above, the utility model sand control is made up of releasing gadget, setting mechanism, retaining mechanism, bindiny mechanism with the hydraulic pressure pony packer;
Above-mentioned releasing gadget is made up of top connection 1, sliding sleeve 2, lock tube 4, lock dog 5, realizes after the packer set and the giving up of top tubing string;
Above-mentioned setting mechanism is made up of leather cup 6, central tube 7, spacer ring 8, pull bar 9, piston seat 10, fluid cylinder 11, bearing 12, piston seat 16, cylinder sleeve 17, ball seat 19, leather cup 24, realizes the seat envelope of packer;
Retaining mechanism by fluid cylinder 11, lead ring 13, refer to spring 14, cut ring and 15 form, be used for guaranteeing after the packer set not deblocking automatically;
Bindiny mechanism by top connection 1, central tube 7, transition joint 18, joint 20, draw cutting ferrule 21, snap ring 22 is formed, and guarantees being connected and support between packer and top tubing string and the bottom tubing string;
Wherein:
This sliding sleeve 2 is installed in top connection 1 inside, and these sliding sleeve 2 bottoms are threaded with pull bar 9, and when giving up, sliding sleeve 2 moves down and discharges lock dog 5;
This lock tube 4 is installed in the outside of top connection 1, and said lock dog 5 is top connection 1 and lock tube 4 fixedly, and lock dog 5 is released when giving up, and top connection 1 is thrown off realization with lock tube 4 and given up;
This ball seat 19 is installed in pull bar 9 bottoms, and when pitching was suppressed, steel ball dropped on and works the effect of building the pressure on the ball seat 19;
Above-mentioned central tube 7 is threaded between transition joint 18 and the lock tube 4, and main rising supported and interconnect function, also for the installation of each parts carrier is provided simultaneously;
This leather cup 6, spacer ring 8, leather cup 24 are installed in respectively on the cylindrical of central tube 7 in order, and two leather cups 6,24 are to centre extruding spacer ring 8 during the seat envelope, and the leather cup spreading seals;
This piston seat 10 is installed in outside the leather cup 24 lower central pipes 7 and bearing 12 joins, and bearing 12 screw threads are fixed on the boss of central tube 7 middle part cylindricals, moves extruding leather cup 24 during the seat envelope on the hydraulic drive piston seat 10, and bearing 12 is fixing with central tube 7 maintenances;
This is cut ring 15 and is installed in the groove below central tube 7 exterior boss; Lead ring 13 is stuck in to be cut on the ring 15, and lead ring 13 is threaded with finger spring 14, cuts ring 15, lead ring 13, refers to that spring 14 interconnects; Be fixed on the cylindrical of central tube 7, seat is honored as a queen and is referred to that spring 14 and fluid cylinder 11 internal threads play locking function;
This fluid cylinder 11 is installed in the outside of central tube 7, and these fluid cylinder 11 upper ends are threaded with piston seat 10, and these fluid cylinder 11 lower ends are threaded with piston seat 16, and seat is honored as a queen and is moved on the fluid cylinder 11, fluid cylinder 11 internal threads with refer to spring 14 lockings;
These piston seat 16 lower ends connect cylinder sleeve 17, during the seat envelope, move on the hydraulic drive piston seat 16, drive simultaneously on the fluid cylinder 11 and move;
Above-mentioned transition joint 18 is installed between cylinder sleeve 17 and the ball seat 19, and these transition joint 18 upper ends are threaded with central tube 7, and these transition joint 18 lower ends are connected with joint 20, and this transition joint 18 is used for fixing central tube 7, and is connected with bottom joint 20;
This joint 20 is installed in cylinder sleeve 17 inside; These joint 20 lower ends with draw cutting ferrule 21 and be threaded; Snap ring 22 is installed in the groove that draws cutting ferrule 21 inside, and the support power effect when joint 20 lift pipe strings press down is drawn cutting ferrule 21 simultaneously and guaranteed to dock smoothly with the bottom tubing string with snap ring 22.
11 threes are concentric with central tube 7, fluid cylinder for above-mentioned pull bar 9, can guarantee the normal seat envelope and the locking of packer.
First O-ring seal 3 is set between above-mentioned sliding sleeve 2 bottoms and the top connection 1, between these sliding sleeve 2 bottoms and the central tube 7 second O-ring seal 23 is set; The 3rd O-ring seal 25 is set between said piston seat 16 and the central tube 7, the 4th O-ring seal 26 is set between this piston seat 16 and the cylinder sleeve 17; The 5th O-ring seal 27, the sealing function when O-ring seal mainly plays hydraulic pressure are set between said transition joint 18 and the cylinder sleeve 17.
Above-mentioned shear pin 28 is cylinder sleeve 17 and joint 20 fixedly, and tubing string presses down the effect of Shi Qifang pressure.
After adopting such technical scheme, the utility model sand control has the interior latus rectum of bigger central tube with the hydraulic pressure pony packer can satisfy the requirement of big pump extract discharge capacity to area of passage, has the little characteristics of diameter simultaneously; The sand control difficult problem that conventional packer can't be lowered in the time of can solving cover change casing damaged well, sidetracked hole and slim hole well sand control, it is simple that this packer has technology, easy to operate; But the property degree is high, weak point consuming time, and efficient is high; Characteristics such as cost is low, and is satisfactory for result.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed explanation:
Fig. 1 is the structural representation of the utility model sand control with hydraulic pressure pony packer upper semisection;
Fig. 2 is the structural representation of the utility model sand control with hydraulic pressure pony packer lower semisection.
The specific embodiment
The utility model sand control uses the operating principle of hydraulic pressure pony packer to be: in the time of after the back-up sand of sand control construction pressure break is accomplished, need being lowered to sand control packer; Be lowered to this packer behind design attitude by the downhole operations rules, pitching, voltage stabilizing when 8MPa is suppressed on ground; Realize the seat envelope; When continuing to suppress 15MPa, realize giving up, thereby accomplish a whole set of frac-pack sand-preventing process.This packer course of work mainly realizes through seat sealing mechanism and releasing gadget.Wherein seat envelope function mainly realizes that through the seat sealing mechanism function of giving up mainly realizes through releasing gadget.
As depicted in figs. 1 and 2; The utility model sand control with the course of work of the seat envelope function of hydraulic pressure pony packer is; At first pitching is suppressed to packer, and voltage stabilizing is 5 minutes when suppressing to 8MPa, packer setting; Seat envelope process is: the circular hole of liquid pull bar 9 bottoms gets in the inner chamber of pull bar 9 and central tube 7; The circular hole of a part of then liquid through central tube 7 middle parts arrive piston seat 10 extrusion piston seats 10 move upward extruding leather cup 24 simultaneously piston seat 10 drive fluid cylinders 11 and move upward, piston seat 16 promotes fluid cylinders 11 and moves upward, fluid cylinder 11 promotes piston seats 10 extruding leather cups 24; Move upward owing to fluid cylinder 11 simultaneously, thereby fluid cylinder 11 lower thread realize an envelope function with referring to spring 14 lockings.
As depicted in figs. 1 and 2, the utility model sand control is that pitching makes steel ball sealing ball seat 19 with the course of work of the function of giving up of hydraulic pressure pony packer; Ground is suppressed; When pressure rose to 15MPa, fixedly the pin of sliding sleeve 2 was cut off, and moved down at pressure low sleeve 2; Lock dog 5 ejects top connection 1 is separated with lock tube 4 simultaneously, thus the function that realization is given up.
Claims (4)
1. a sand control is used the hydraulic pressure pony packer, form by releasing gadget, setting mechanism, retaining mechanism, bindiny mechanism,
Said releasing gadget is made up of top connection (1), sliding sleeve (2), lock tube (4), lock dog (5);
Said setting mechanism is made up of leather cup (6), central tube (7), spacer ring (8), pull bar (9), piston seat (10), fluid cylinder (11), bearing (12), piston seat (16), cylinder sleeve (17), ball seat (19), leather cup (24);
Retaining mechanism by fluid cylinder (11), lead ring (13), refer to spring (14), cut ring (15) and form;
Bindiny mechanism by top connection (1), central tube (7), transition joint (18), joint (20), draw cutting ferrule (21), snap ring (22) is formed;
It is characterized in that:
Said sliding sleeve (2) is installed in top connection (1) inside, and this sliding sleeve (2) bottom is threaded with pull bar (9);
Said lock tube (4) is installed in the outside of top connection (1), fixedly top connection of said lock dog (5) (1) and lock tube (4);
Said ball seat (19) is installed in pull bar (9) bottom;
Said central tube (7) is threaded between transition joint (18) and the lock tube (4);
On the cylindrical of said leather cup (6) mounting center pipe (7), spacer ring (8) is installed on the cylindrical of lower central pipe (7) of leather cup (6), and leather cup (24) is installed on the cylindrical of spacer ring (8) lower central pipe (7);
Said piston seat (10) is installed in outside leather cup (24) the lower central pipe (7) and bearing (12) joins, and bearing (12) screw thread is fixed on the boss of central tube (7) middle part cylindrical;
The said ring (15) of cutting is installed in the groove below central tube (7) exterior boss, and lead ring (13) is stuck in to be cut on the ring (15), and lead ring (13) is threaded with referring to spring (14);
Said fluid cylinder (11) is installed in the outside of central tube (7), and this fluid cylinder (11) upper end is threaded with piston seat (10), and this fluid cylinder (11) lower end is threaded with piston seat (16);
Said piston seat (16) lower end connects cylinder sleeve (17);
Said transition joint (18) is installed between cylinder sleeve (17) and the ball seat (19), and this transition joint (18) upper end is threaded with central tube (7), and this transition joint (18) lower end is connected with joint (20);
Said joint (20) is installed in cylinder sleeve (17) inside, and this joint (20) lower end is threaded with drawing cutting ferrule (21), and snap ring (22) is installed in and draws in the inner groove of cutting ferrule (21).
2. packer according to claim 1 is characterized in that: said pull bar (9) and central tube (7), fluid cylinder (11) three are concentric.
3. packer according to claim 1 is characterized in that: between said sliding sleeve (2) bottom and the top connection (1) first O-ring seal (3) is set, between this sliding sleeve (2) bottom and the central tube (7) second O-ring seal (23) is set; Between said piston seat (16) and the central tube (7) the 3rd O-ring seal (25) is set, between this piston seat (16) and the cylinder sleeve (17) the 4th O-ring seal (26) is set; Between said transition joint (18) and the cylinder sleeve (17) the 5th O-ring seal (27) is set.
4. packer according to claim 1 is characterized in that: said shear pin (28) is cylinder sleeve (17) and joint (20) fixedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204760689U CN202381026U (en) | 2011-11-25 | 2011-11-25 | Hydraulic small-diameter packer for sand prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204760689U CN202381026U (en) | 2011-11-25 | 2011-11-25 | Hydraulic small-diameter packer for sand prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381026U true CN202381026U (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204760689U Expired - Fee Related CN202381026U (en) | 2011-11-25 | 2011-11-25 | Hydraulic small-diameter packer for sand prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132944A (en) * | 2011-11-25 | 2013-06-05 | 中国石油天然气股份有限公司 | Sand-prevention hydraulic small-diameter packer |
-
2011
- 2011-11-25 CN CN2011204760689U patent/CN202381026U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132944A (en) * | 2011-11-25 | 2013-06-05 | 中国石油天然气股份有限公司 | Sand-prevention hydraulic small-diameter packer |
| CN103132944B (en) * | 2011-11-25 | 2016-07-13 | 中国石油天然气股份有限公司 | Sand-prevention hydraulic small-diameter packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20201125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |