CN205154097U - Two -way compression hydraulic pressure packer of three power - Google Patents
Two -way compression hydraulic pressure packer of three power Download PDFInfo
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- CN205154097U CN205154097U CN201520848467.1U CN201520848467U CN205154097U CN 205154097 U CN205154097 U CN 205154097U CN 201520848467 U CN201520848467 U CN 201520848467U CN 205154097 U CN205154097 U CN 205154097U
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- central tube
- deblocking
- big envelope
- lock claw
- fluid cylinder
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Abstract
The utility model discloses a two -way compression hydraulic pressure packer of three power for oil field layering is in the pit annotated and is adopted technology. Inside and outside central pipe box is in the same place and is had the deblocking shear pin fixed mutually, inside and outside center tube is equipped with the deblocking step, the packing element, go up hydraulic cylinder locking mechanism and the top -down of anchoring mechanism overlaps in proper order outside outer center tube, and at the outer existence of solution big envelope that still overlaps below anchoring mechanism of outer center tube, outer center tube passes through the related organization and fixes mutually with separating between the big envelope, separating hydraulic cylinder locking mechanism under the big envelope peripheral hardware, and lower hydraulic cylinder locking mechanism is continuous with lower cone, establishing between cone and the lower hydraulic cylinder locking mechanism down and hanging interior step, outer center tube is correspondingly established outward and is hung outer step, and the internal diameter of step is lighter than the external diameter that hangs outer step in hanging. Owing to designed two hydraulic cylinder locking mechanism from the upper and lower direction common loading hydraulic pressure force of packing elements, including the machinery of tubular column pushes down load, makes the sealed effect of packer more ideal.
Description
Technical field
The utility model relates to the downhole packer technical field used in oil exploitation, particularly relates to a kind of downhole packer with hydraulic pressure, the two compression of machinery.
Background technology
In the operation such as completion, oil recovery of field of petroleum exploitation, downhole packer is often used to separate oil reservoir, Seal Oil cover annular space, hang down-hole string etc.In order to improve the sealing effectiveness of packer, Chinese Patent Application No. CN201310333524, applying date 2013.08.02, denomination of invention " double acting compression packer and using method thereof ", disclose a kind of first hydraulic setting compression packing element, again by the packer of two kinds of compression packing element modes of tubing string pressurization compression packing element, this packing element, anchor mechanism and fluid cylinder retaining mechanism are arranged in order from top to bottom, when setting, fluid cylinder after precommpression packing element slips anchoring on sleeve pipe, the last effectively compression of packing element draws the upper end of packing element to realize by fluid cylinder, simultaneously, the loading load of machinery tubing string is also the upper end that is pressed in packing element, namely hydraulic coupling and mechanical load power are all the upper ends acting on packing element." oil-gas mining engineer handbook " the 70th page " Y441 type packer " (He Shenghou edits, Beijing: Sinopec publishing house, April in 2006 the 1st edition), disclose the packer of a kind of fluid cylinder retaining mechanism between packing element and anchor mechanism, this is a kind of common Y441 type packer, push away slips anchoring sleeve pipe under fluid cylinder, above push away packing element, packing element is only that lower end receives extruding force.Experiment shows, loads compressive force from one end of packing element, and the contact stress of packing element and sleeve pipe is uneven along the external surface of packing element in the axial direction, and this affects sealing effectiveness.
Summary of the invention
For solving the problems of the technologies described above, inventing three power bidirectional compression type hydraulic packers, during set packer, having been improved the sealing effectiveness of packer by the two ends compressing packing element.
Present invention employs following technical scheme:
Three power bidirectional compression type hydraulic packers, exterior central tube is enclosed within outside inner central tube, has deblocking shear pin to fix between exterior central tube and inner central tube; Inner central tube is provided with deblocking outer step, exterior central tube is provided with step in deblocking, the external diameter of deblocking outer step is greater than the internal diameter of step in deblocking, deblocking outer step is enclosed within deblocking outside step, the distance in deblocking outer step and deblocking between step be not less than that inner support step makes related organization lose efficacy on move distance; Packing element, upper fluid cylinder retaining mechanism and anchor mechanism are enclosed within outside exterior central tube from top to bottom successively, upper fluid cylinder retaining mechanism is connected with upper cone, solution big envelope is had outer also the overlapping below anchor mechanism of exterior central tube, fixed by related organization between exterior central tube and solution big envelope, fluid cylinder retaining mechanism under solution big envelope peripheral hardware, lower fluid cylinder retaining mechanism is connected with lower cone; Establish step in hanging between lower cone and lower fluid cylinder retaining mechanism, exterior central tube correspondingly establishes suspension outer step outward, and in hanging, the internal diameter of step is less than the external diameter hanging outer step.
Preferred embodiment one, described related organization is lock dog mechanism, and exterior central tube is provided with hole, and deblocking is arranged with inner groovy, and lock dog is arranged in described hole and inner groovy, and inner central tube is provided with inner support step and props up lock dog diametrically.
Preferred embodiment two, described related organization is lock claw mechanism, and exterior central tube is provided with lock claw external screw thread, and deblocking is arranged with lock claw internal thread, and lock claw external screw thread and lock claw internal thread engage each other, and inner central tube is provided with inner support step and props up lock claw external screw thread diametrically.
Compared with prior art, the invention has the beneficial effects as follows, jointly hydraulic coupling is loaded from the above-below direction of packing element owing to devising two fluid cylinder retaining mechanisms, add the mechanical depress load of tubing string, the Bidirectional-squeezing power at two ends is received when the packing element of packer sets, make the contact stress between packing element and sleeve pipe become more even in the axial direction, thus sealing effectiveness is better.
Accompanying drawing explanation
Simply describing the present invention above, next describing the present invention further, in detail with reference to describing the drawing of following specific embodiment of the present invention.These drawings only describe some typical embodiments of this invention, therefore can not think to limit the scope of the invention.In these drawings:
Fig. 1 is the structural representation of packer of the present invention.
Fig. 2 is the structural representation of the preferred embodiment one of packer of the present invention.
Fig. 3 is the structural representation of the preferred embodiment two of packer of the present invention
Fig. 4 is the externally threaded structural representation of lock claw.
Detailed description of the invention
Accompanying drawing 1 in manual of the present invention and accompanying drawing 2 structural representation, only depict by simplifying the left part cutting packer open.
See Fig. 1, three power bidirectional compression type hydraulic packers, exterior central tube 26 is enclosed within outside inner central tube 12, has deblocking shear pin 11 to fix between exterior central tube 26 and inner central tube 12; Inner central tube 12 is provided with deblocking outer step 14, exterior central tube 26 is provided with step 13 in deblocking, the external diameter of deblocking outer step 14 is greater than the internal diameter of step 13 in deblocking, deblocking outer step 14 is enclosed within deblocking outside step 13, the distance in deblocking outer step 14 and deblocking between step 13 be not less than that inner support step 25 makes related organization 24 lose efficacy on move distance; Packing element 15, upper fluid cylinder retaining mechanism 16 and anchor mechanism 18 are enclosed within outside exterior central tube 26 from top to bottom successively, upper fluid cylinder retaining mechanism 16 is connected with upper cone 17, also overlap to have in anchor mechanism less than 18 outside exterior central tube 26 and separate big envelope 23, fixed by related organization 24 between exterior central tube 26 and solution big envelope 23, outside solution big envelope 23, set fluid cylinder retaining mechanism 22, lower fluid cylinder retaining mechanism 22 is connected with lower cone 19.Establish step 40 in hanging between lower cone 19 and lower fluid cylinder retaining mechanism 22, outer correspondingly the establishing of exterior central tube 26 hangs outer step 41, and in hanging, the internal diameter of step 40 is less than the external diameter hanging outer step 41.Solution is honored as a queen, and it is descending that big envelope 23 conciliate by lower cone 19 and following lower fluid cylinder retaining mechanism 22 thereof, and the weight of this part is just suspended in suspension outer step 41 by hanging interior step 40.
During deblocking, above carry inner central tube 12, deblocking shear pin 11 is cut off, and deblocking outer step 14 is up tangles step 13 in deblocking.
Described related organization 24 can be lock dog mechanism, and exterior central tube 26 is provided with hole, and separate big envelope 23 and be provided with inner groovy 28, lock dog 27 is arranged in described hole and inner groovy, and inner central tube 12 is provided with inner support step 25 and props up lock dog 27 diametrically.During deblocking, on carry inner central tube 12, inner support step 25 is up, lock dog 27 inside loses support, thus moves inward diametrically, as shown in Figure 1, the chamfered part of lock dog 27 exits from groove 28, separating big envelope 23 and exterior central tube 26 just can relative motion in the axial direction, and when being subject to lower thrust, solution big envelope 23 just can be thrown off with exterior central tube 26.
Described related organization 24 also can be lock claw mechanism, as shown in Figure 2 and Figure 4, exterior central tube 26 is provided with lock claw external screw thread 31, it is axially grooved that the bottom of exterior central tube 26 comprises lock claw external screw thread 31, form finger-shaped, when being subject to radial load, lock claw external screw thread 31 can move diametrically, and this is a kind of design common in downhole tool; Separate big envelope 23 and be provided with lock claw internal thread 30, lock claw external screw thread 31 and lock claw internal thread 30 engage each other, and inner central tube 12 is provided with inner support step 25 and props up lock claw external screw thread 31 diametrically.During deblocking, above carry inner central tube 12, inner support step 25 is up, and lock claw external screw thread 31 inside loses support, when being subject to lower thrust, separating big envelope 23 and just can throw off with exterior central tube 26.
As shown in Figure 3, this is a preferred embodiment of the present invention.In figure:
Top connection 301 and interior pipe 304 together constitute the inner central tube 12 in schematic diagram.Deblocking outer step 14 is provided with in the bottom of top connection 301.
Solution big envelope 302, adapter sleeve 305 and outer tube 306 together constitute the exterior central tube 26 in schematic diagram.The junction of separating big envelope 302 and adapter sleeve 305 is provided with inner groovy, and the upper end of described inner groovy is step 13 in deblocking.The external diameter of deblocking outer step 14 is greater than the internal diameter of step 13 in deblocking.
Packing element 15 is enclosed within outer tube 306, is positioned at adapter sleeve less than 305.Usually, be provided with baffle ring at the two ends of packing element, baffle ring can independently be arranged, and also can be integrated with adjacent part, and if the adapter sleeve 305 of the upper end of packing element in figure 15 is just as the upper baffle ring of packing element, and the lower end of packing element 15 is provided with independently lower baffle ring 330.Certain lower baffle ring 330 also can be integrated with upper pressing cap 307.
Upper pressing cap 307, upper lock ring 308, upper fluid cylinder cover 309, upper piston 311, upper cone 17 and on set shear pin 312 and together constitute upper fluid cylinder retaining mechanism 16 in schematic diagram.This is the conventional design of hydraulic packer setting mechanism, sees " oil-gas mining engineer handbook " the 70th page " Y441 type packer " (He Shenghou edits, Beijing: Sinopec publishing house, April in 2006 the 1st edition).When setting, above set shear pin 312 and cut off, the up compression packing element of upper piston 311, the descending grappling slips of upper cone 17.Upper piston 311 peripheral hardware locking screw 310, after having set, upper lock ring 308 is locked on locking screw 310.
Upper cone 17 slips cage 313, slips 314, spring 315 and lower cone 19 together constitute the anchor mechanism 18 in schematic diagram.This is the conventional design of hydraulic packer anchor mechanism, sees " oil-gas mining engineer handbook " the 70th page " Y441 type packer " (He Shenghou edits, Beijing: Sinopec publishing house, April in 2006 the 1st edition).
The lower end of outer tube 306 is the lock claw external screw threads shown in Fig. 4, separates big envelope 23 and is enclosed within outer tube 306 bottom, separates between big envelope 23 and outer tube 306 and is linked together by lock claw screw thread 323.The lock claw external screw thread 31 that lock claw screw thread 323 comprises outer tube 306 lower end conciliates the lock claw internal thread 30 of big envelope 23 lower end, and the two engages each other and forms lock claw screw thread 323 together.Lock claw screw thread 323 props up by interior pipe 304 lower end inner support step 25 outwardly.After inner support step 25 is up, lock claw external screw thread 31 loses inner support, and the lock claw external screw thread 31 meshed together and lock claw internal thread 30 will be thrown off and lose efficacy under the effect of external force.
Establish step 40 in suspension in lower cone 19, outer tube 306 peripheral hardware hangs outer step 41, and solution is honored as a queen, and hangs up the tangling of outer step 41 and hangs interior step 40, fluid cylinder retaining mechanism 22 and following weight thereof thus suspension is stayed.
Lower piston 319, lower fluid cylinder cover 318 and hang cap 316, lower lock ring 320, lower pressing cap 321, under set shear pin 322 and lower contact 324 and together constitute lower fluid cylinder retaining mechanism 22 in schematic diagram.When setting, under set shear pin 322 and cut off, lower piston 319 drives lower lock ring 320 together up promotion lower cone 19 to exercise slips anchoring sleeve pipe, simultaneously, the counter-force of fluid cylinder passes to outer tube 306 by lock claw screw thread 323, drop-down outer tube 306, thus applies setting force from the upper end of packing element 15.Outside solution big envelope 23, be also provided with locking screw, after having set, lower lock ring 320 is just locked in be separated on big envelope 23.The principle of upper fluid cylinder retaining mechanism and lower fluid cylinder retaining mechanism is identical.
Set in process, press down setting force that tubing string applies to packer has also been loaded into packing element 15 upper end by top connection 301, the transmission of separating big envelope 302 and adapter sleeve 305.
The mounting method of three power bidirectional compression type hydraulic packers, comprises the following steps:
A, with oil pipe or drilling rod, described packer is sent into downhole designs position, its necessary pipe string combination is: oil pipe or drilling rod+packer+pressure valve;
In b, raising tubing string, hydraulic coupling reaches the design load of packer setting power;
C, maintenance or the hydraulic coupling reduced in tubing string, but the hydraulic coupling that should ensure in tubing string is greater than the hydraulic coupling in oil jacket annular space;
D, from well head transfer send into tubing string to packer load mechanical force 50kN ~ 250kN;
In e, again raising tubing string, hydraulic coupling reaches the design load of packer setting power;
F, the hydraulic coupling shed in tubing string.
Described pressure valve generally uses level pressure ball seat, and this is a kind of common tool, and when setting when pressure reaches the design load of packer, ball is cut off the shear pin of ball seat and lost efficacy together with ball seat.Certain pressure valve also can use other instrument, as ball-and-seat, blind plugging, blanking plug etc.
Described " design load of packer setting power " refers to that the make packer of a certain concrete packer designed by its structure reaches the value of the hydraulic coupling setting state completely.Its value setting required hydraulic coupling of different packers is different, and the design of hydraulic packer sets pressure and is generally 15MPa ~ 25MPa, and scene generally uses 18MPa ~ 20MPa.
Described loading mechanical force is preferably 100kN ~ 150kN.
Embodiment as herein described is only exemplary embodiments, but is not limited only to these embodiments, and those skilled in the art can not depart from spirit of the present invention and make amendment under enlightening.A lot of change, combination and amendment may be there is in scheme disclosed herein; and all within the scope of the invention, therefore, protection domain is not limited only to explanation above; but define according to claim, protection domain comprises all equivalents of the target of claim.
Claims (3)
1. three power bidirectional compression type hydraulic packers, exterior central tube (26) is enclosed within inner central tube (12) outward, has deblocking shear pin (11) to fix between exterior central tube (26) and inner central tube (12); Inner central tube (12) is provided with deblocking outer step (14), exterior central tube (26) is provided with step in deblocking (13), the external diameter of deblocking outer step (14) is greater than the internal diameter of step in deblocking (13), deblocking outer step (14) is enclosed within step in deblocking (13) outward, the distance in deblocking outer step (14) and deblocking between step (13) be not less than that inner support step (25) makes related organization (24) lose efficacy on move distance; Packing element (15), upper fluid cylinder retaining mechanism (16) and anchor mechanism (18) are enclosed within exterior central tube (26) from top to bottom outward successively, upper fluid cylinder retaining mechanism (16) is connected with upper cone (17), it is characterized in that, also overlap below in anchor mechanism (18) outward at exterior central tube (26) and have solution big envelope (23), fixed by related organization (24) between exterior central tube (26) and solution big envelope (23), outside solution big envelope (23), set fluid cylinder retaining mechanism (22), lower fluid cylinder retaining mechanism (22) is connected with lower cone (19); Establish step (40) in hanging between lower cone (19) and lower fluid cylinder retaining mechanism (22), exterior central tube (26) is correspondingly established outward and is hung outer step (41), and in hanging, the internal diameter of step (40) is less than the external diameter hanging outer step (41).
2. three power bidirectional compression type hydraulic packers according to claim 1, it is characterized in that, described related organization (24) is lock dog mechanism, exterior central tube (26) is provided with hole, separate big envelope (23) and be provided with inner groovy (28), lock dog (27) is arranged in described hole and inner groovy, and inner central tube (12) is provided with inner support step (25) and props up lock dog (27) diametrically.
3. three power bidirectional compression type hydraulic packers according to claim 1, it is characterized in that, described related organization (24) is lock claw mechanism, exterior central tube (26) is provided with lock claw external screw thread (31), separate big envelope (23) and be provided with lock claw internal thread (30), lock claw external screw thread (31) and lock claw internal thread (30) engage each other, and inner central tube (12) is provided with inner support step (25) and props up lock claw external screw thread (31) diametrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848467.1U CN205154097U (en) | 2015-10-30 | 2015-10-30 | Two -way compression hydraulic pressure packer of three power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848467.1U CN205154097U (en) | 2015-10-30 | 2015-10-30 | Two -way compression hydraulic pressure packer of three power |
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| Publication Number | Publication Date |
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| CN205154097U true CN205154097U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520848467.1U Expired - Fee Related CN205154097U (en) | 2015-10-30 | 2015-10-30 | Two -way compression hydraulic pressure packer of three power |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221099A (en) * | 2015-10-30 | 2016-01-06 | 中国石油化工股份有限公司 | Three power bidirectional compression type hydraulic packer and mounting methods thereof |
| CN110259407A (en) * | 2019-07-16 | 2019-09-20 | 中国石油化工股份有限公司 | A kind of machine liquid inner-lock-type compression packer |
-
2015
- 2015-10-30 CN CN201520848467.1U patent/CN205154097U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221099A (en) * | 2015-10-30 | 2016-01-06 | 中国石油化工股份有限公司 | Three power bidirectional compression type hydraulic packer and mounting methods thereof |
| CN110259407A (en) * | 2019-07-16 | 2019-09-20 | 中国石油化工股份有限公司 | A kind of machine liquid inner-lock-type compression packer |
| CN110259407B (en) * | 2019-07-16 | 2021-06-15 | 中国石油化工股份有限公司 | Mechanical-hydraulic internal locking compression 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20191030 |