CN204113171U - The hydraulic expansion cone of a kind of energy self-constriction - Google Patents
The hydraulic expansion cone of a kind of energy self-constriction Download PDFInfo
- Publication number
- CN204113171U CN204113171U CN201420535424.3U CN201420535424U CN204113171U CN 204113171 U CN204113171 U CN 204113171U CN 201420535424 U CN201420535424 U CN 201420535424U CN 204113171 U CN204113171 U CN 204113171U
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- roller
- stitching unit
- constriction
- piston
- expansion cone
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Abstract
The utility model provides the hydraulic expansion cone of a kind of energy self-constriction, comprise the body (2) of tubular, stitching unit body (4) is provided with in the external surface of body (2) sidewall, stitching unit body (4) comprises piston (41), limited block (42), roller (43) and spring (44), the rotating shaft (45) of roller (43) is fixedly connected with piston (41), piston (41) can moving radially along body (2), and roller (43) can be protruding from body (2) sidewall.The hydraulic expansion cone of this energy self-constriction can realize roller with well track reducing, automatically can shrink, reduce operating risk after roller expansion pressure release; Roller can automatic telescopic according to well size, realizes the object of reducing.
Description
Technical field
The utility model relates to oil and gas production technique field, the hydraulic expansion cone of particularly a kind of energy self-constriction.
Background technology
At present in the recovery process of oil reservoir, a lot of oil wells of sandstone oil reservoir also exist the problem of shaking out, and the outer mechanical sand control of traditional pipe is in pit shaft, set up a sand block barrier, because completion casing size is little, interior latus rectum reduces, and reduce oily well capacity, the interior latus rectum even had is too small and can not enter down.And the complicated construction technique of the outer mechanical sand control of pipe, enter under affecting other downhole tool; Chemical sand control can bring certain pollution to stratum, and success rate is lower, and the sand control life is short.Expandable screen can realize screen casing and be close to the borehole wall, does not have sand ring between screen casing and sleeve pipe, can prevent sand movement, protection reservoir sand skeleton, ensure the original permeability in stratum and conveyance capacity constant.And oil flows through flow area greatly, flow resistance is little.
Bloat tool is one of key technology of expandable screen sand control technique.Rational bloat tool can reduce friction factor thus reduce the expansion force in expansion process, thus improves the mechanical property of expandable screen.Swollen cone for expandable screen mainly contains two kinds: Solid expandable cone and the swollen cone of roller type.The rigidity of entity is swollen cone is too large, by the restriction of size, expandable screen can not be made well to fit outer layer sleeve or the borehole wall, and if well track irregular, reducing place's expandable screen at hole diameter can compacting near wellbore zone, not easily renwing stratum reset condition during production; For caliper expansion place, the zero clearance of screen casing and the borehole wall cannot be realized, affect sand controlling result.Roller type is swollen, and cone adopts roller and screen casing contact internal walls, can adapt to well track preferably, expandable screen and internal surface of sleeve pipe are fitted completely.
But existing roller is swollen cone upon inflation roller can not free shrink go back, tripping out of the swollen Taper Pipe post of impact, and there is the risk of upper lifting pipe post Ka Jing.
Utility model content
In order to solve the swollen cone of existing roller upon inflation roller free shrink can not return the problem that trips out of the swollen Taper Pipe post of impact.The utility model provides the hydraulic expansion cone of a kind of energy self-constriction, and the hydraulic expansion cone of this energy self-constriction can realize roller with well track reducing, and pressure release rear roller can shrink back automatically, avoids the risk executing time card tubing string.
The utility model is the technical scheme solving the employing of its technical problem: the hydraulic expansion cone of a kind of energy self-constriction, comprise the body of tubular, the external surface of body sidewall is provided with multiple stitching unit groove, stitching unit body is equipped with in each stitching unit groove, stitching unit body comprises piston, limited block, roller and spring, piston is arranged on the bottom in stitching unit groove, limited block is arranged on the top in stitching unit groove, limited block is fixedly connected with body, the rotating shaft of roller is fixedly connected with piston, spring is arranged between limited block and piston, bottom in stitching unit groove is provided with the through hole being communicated with stitching unit groove and body interior, piston can moving radially along body, roller can be protruding from body sidewall.
Stitching unit body contains two limited blocks, and two limited blocks are separately positioned on the both sides of roller, and the gap between two limited blocks is greater than the diameter of roller.
Two limited blocks are all fixedly connected with the sidewall of body by screw.
Stitching unit body contains two springs, and two springs are separately positioned on the both sides of roller.
The axis of roller and the axes normal of body, the two ends of roller are equipped with back-up block, and the two ends of the rotating shaft of roller are fixedly connected with piston respectively by back-up block.
The upper surface of piston is provided with can the groove of holding portion roller.
The upper surface of piston is provided with guide-localization bar, and one end of guide-localization bar is fixedly connected with the upper surface of piston, and the other end of guide-localization bar is plugged in limited block.
Along the axis of body, multiple stitching unit body forms multiple stitching unit body group at the external surface of body sidewall, containing at least two the equally distributed stitching unit of the circumference along body bodies in each stitching unit body group.
Stitching unit body in adjacent stitching unit body group is crisscross arranged.
One end of body is provided with top connection, and body is tightly connected by tube connector and top connection, and the other end of body is provided with circulation pipe, and one end sealing of circulation pipe is plugged in this other end of body, and the internal diameter of circulation pipe is less than the internal diameter of body.
The beneficial effects of the utility model are: the hydraulic expansion cone of this energy self-constriction can realize roller with well track reducing, automatically can shrink, reduce operating risk after roller expansion pressure release; Roller can automatic telescopic according to well size, realizes the object of reducing.
Accompanying drawing explanation
Be described in further detail below in conjunction with the hydraulic expansion cone of accompanying drawing to energy described in the utility model self-constriction.
Fig. 1 is the assembling drawing of the hydraulic expansion cone of energy self-constriction.
Fig. 2 is the enlarged diagram that stitching unit body divides.
Wherein 1. top connections, 2. body, 21. through holes, 3. stitching unit groove, 4. stitching unit body, 41. pistons, 42. limited blocks, 43. rollers, 44. springs, 45. rotating shafts, 46. back-up blocks, 47. grooves, 48. guide-localization bars, 5. stitching unit body group, 6. circulation pipe.
Detailed description of the invention
Be described in further detail below in conjunction with the hydraulic expansion cone of accompanying drawing to energy described in the utility model self-constriction.The hydraulic expansion cone of a kind of energy self-constriction, comprise columnar body 2, the external surface of body 2 sidewall is provided with multiple stitching unit groove 3, a stitching unit body 4 is equipped with in each stitching unit groove 3, stitching unit body 4 comprises piston 41, limited block 42, roller 43 and spring 44, piston 41 is arranged on the bottom in stitching unit groove 3, limited block 42 is arranged on the top in stitching unit groove 3, limited block 42 is fixedly connected with body 2, the rotating shaft 45 of roller 43 is fixedly connected with piston 41, spring 44 is arranged between limited block 42 and piston 41, bottom in stitching unit groove 3 is provided with the through hole 21 being communicated with stitching unit groove 3 and body 2 inside, piston 41 is connected with the inner wall sealing of stitching unit groove 3, piston 41 can moving radially along body 2, roller 43 can be protruding from body 2 sidewall, as depicted in figs. 1 and 2.
When not working, as shown in Figure 2, roller 43 is in the stitching unit groove 3 of body 2 sidewall, and roller 43 can not expose the external surface of body 2.When the liquid with pressure enters stitching unit groove 3 from the inside of body 2 through through hole 21, this liquid with pressure can promote piston 41 and make piston 41 drive roller 43 to move outside body 2 (namely in Fig. 2, piston 41 moves up along the radial direction of body 2 together with roller 43) along moving radially of body 2 together, until spring 44 compresses completely, the part or all of of roller 43 will be exposed to outside the sidewall of body 2, thus making roller 43 can the inwall of roll extrusion screen casing, the hydraulic expansion cone of this energy self-constriction can also realize roller with well track reducing.When after pressure liquid venting, spring 44 driving rolls 43 resets, and namely roller 43 comes back in the stitching unit groove 3 of the sidewall of body 2, thus avoids the risk of Ka Jing.
As shown in Figure 2, stitching unit body 4 is separately positioned on the left and right sides of roller 43 containing two limited blocks, 42, two limited blocks 42, and the gap between two limited blocks 42 is greater than the diameter of roller 43.Two limited blocks 42 are all fixedly connected with by the sidewall of screw with body 2.The effect of limited block 42 is movement positions of limited piston 41 and roller 43, prevents piston 41 and roller 43 from departing from stitching unit groove 3.Stitching unit body 4 is separately positioned on the left and right sides of roller 43 containing two springs, 44, two springs 44.
The axis of roller 43 and the axes normal of body 2, the two ends of roller 43 are equipped with back-up block 46, and the two ends of the rotating shaft 45 of roller 43 are fixedly connected with piston 41 respectively by back-up block 46.Back-up block 46 also can be arranged in the inner surface of stitching unit groove 3, thus plays guide effect, avoids piston 41 and roller 43 to rotate relative to body 2.
The upper surface of piston 41 is provided with can the groove 47 of holding portion roller 43, as shown in Figure 2.Such design can make full use of space.
As shown in Figure 2, the upper surface of piston 41 right-hand member is provided with guide-localization bar 48, and the lower end of guide-localization bar 48 is fixedly connected with the upper surface of piston 41, and the upper end of guide-localization bar 48 is plugged in limited block 42.
Along the axis of body 2, multiple stitching unit body 4 forms multiple stitching unit body group 5 at the external surface of body 2 sidewall, containing at least two the equally distributed stitching unit of the circumference along body 2 bodies 4 in each stitching unit body group 5, as shown in Figure 1, in figure, only depict two stitching unit body groups 5.
Stitching unit body 4 in adjacent stitching unit body group 5 is crisscross arranged, as shown in Figure 1.Also when sample can make roller 43 work, screen casing is stressed more even.
The upper end of body 2 is provided with top connection 1, body 2 is tightly connected by tube connector and top connection 1, the lower end of body 2 is provided with circulation pipe 6, the upper end sealing of circulation pipe 6 is plugged in the lower end of body 2, the internal diameter of circulation pipe 6 is less than the internal diameter of body 2, the internal diameter of circulation pipe 6 is circulation port, and circulation port can play ringing, and the internal diameter of circulation pipe 6 is 10% ~ 30% of body 2 internal diameter.Because liquid stream is when the internal diameter of the internal diameter of body 2 and circulation pipe 6, cross section has diminished, so this liquid has pressure, this liquid is when through hole 21 enters stitching unit groove 3, and this liquid with pressure can promote piston 41 and make piston 41 drive roller 43 to move outside body 2 along moving radially of body 2 together.
The course of work of the hydraulic expansion cone of this energy self-constriction is: by tubing string, the hydraulic expansion cone of this energy self-constriction is fed through design attitude, suppressed by pump truck on ground, roller 43 under the effect of hydraulic pressure along the radial outward movement of body 2, the radial load produced acts on expandable screen inwall, make expandable screen that plastic strain occur again and be close to internal surface of sleeve pipe or the bore hole borehole wall, keep pump pressure, transfer tubing string, expandable screen realizes all expanding.After completing expansion operation, stop suppressing, roller 43 is recycled to initial position under spring 44 active force, avoids the possibility that card well accident occurs.
In screen expansion process, when running into hole shrinkage situation, when external pressure suffered by roller 43 is greater than interior top power (i.e. the fluid pressure of body 2) of roller 43, roller 43 on the hydraulic expansion cone of this energy self-constriction can shrink automatically, can automatic telescopic according to the roller 43 of the hydraulic expansion cone of this energy self-constriction of well size, realize the object of reducing.
Effect of the present utility model: roller 43 expands after pressure release and can automatically shrink, and reduces operating risk; Roller can automatic telescopic according to well size, realizes the object of reducing.
The above; be only specific embodiment of the utility model, the scope of utility model enforcement can not be limited with it, so the displacement of its equivalent assemblies; or the equivalent variations to do according to the utility model scope of patent protection and modification, all still should belong to the category that this patent is contained.In addition, the technical characteristic in the utility model and all can using by independent assortment between technical characteristic, between technical characteristic and technical scheme, between technical scheme and technical scheme.
Claims (10)
1. the hydraulic expansion cone of an energy self-constriction, it is characterized in that, the hydraulic expansion cone of described energy self-constriction comprises the body (2) of tubular, the external surface of body (2) sidewall is provided with multiple stitching unit groove (3), stitching unit body (4) is equipped with in each stitching unit groove (3), stitching unit body (4) comprises piston (41), limited block (42), roller (43) and spring (44), piston (41) is arranged on the bottom in stitching unit groove (3), limited block (42) is arranged on the top in stitching unit groove (3), limited block (42) is fixedly connected with body (2), the rotating shaft (45) of roller (43) is fixedly connected with piston (41), spring (44) is arranged between limited block (42) and piston (41), bottom in stitching unit groove (3) is provided with the through hole (21) being communicated with stitching unit groove (3) and body (2) inside, piston (41) can moving radially along body (2), roller (43) can be protruding from body (2) sidewall.
2. the hydraulic expansion cone of energy according to claim 1 self-constriction, it is characterized in that: stitching unit body (4) is containing two limited blocks (42), two limited blocks (42) are separately positioned on the both sides of roller (43), and the gap between two limited blocks (42) is greater than the diameter of roller (43).
3. the hydraulic expansion cone of energy according to claim 2 self-constriction, is characterized in that: two limited blocks (42) are all fixedly connected with by the sidewall of screw with body (2).
4. the hydraulic expansion cone of energy according to claim 2 self-constriction, it is characterized in that, stitching unit body (4) is containing two springs (44), and two springs (44) are separately positioned on the both sides of roller (43).
5. the hydraulic expansion cone of energy according to claim 1 self-constriction, it is characterized in that: the axis of roller (43) and the axes normal of body (2), the two ends of roller (43) are equipped with back-up block (46), and the two ends of the rotating shaft (45) of roller (43) are fixedly connected with piston (41) respectively by back-up block (46).
6. according to claim 1 can the hydraulic expansion cone of self-constriction, it is characterized in that: the upper surface of piston (41) is provided with can the groove (47) of holding portion roller (43).
7. the hydraulic expansion cone of energy according to claim 1 self-constriction, it is characterized in that: the upper surface of piston (41) is provided with guide-localization bar (48), one end of guide-localization bar (48) is fixedly connected with the upper surface of piston (41), and the other end of guide-localization bar (48) is plugged in limited block (42).
8. the hydraulic expansion cone of energy according to claim 1 self-constriction, it is characterized in that: along the axis of body (2), multiple stitching unit body (4) forms multiple stitching unit body group (5) at the external surface of body (2) sidewall, containing at least two equally distributed stitching unit bodies (4) of the circumference along body (2) in each stitching unit body group (5).
9. the hydraulic expansion cone of energy according to claim 8 self-constriction, is characterized in that: the stitching unit body (4) in adjacent stitching unit body group (5) is crisscross arranged.
10. the hydraulic expansion cone of energy according to claim 1 self-constriction, it is characterized in that: one end of body (2) is provided with top connection (1), body (2) is tightly connected by tube connector and top connection (1), the other end of body (2) is provided with circulation pipe (6), one end sealing of circulation pipe (6) is plugged in this other end of body (2), and the internal diameter of circulation pipe (6) is less than the internal diameter of body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420535424.3U CN204113171U (en) | 2014-09-17 | 2014-09-17 | The hydraulic expansion cone of a kind of energy self-constriction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420535424.3U CN204113171U (en) | 2014-09-17 | 2014-09-17 | The hydraulic expansion cone of a kind of energy self-constriction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113171U true CN204113171U (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420535424.3U Expired - Fee Related CN204113171U (en) | 2014-09-17 | 2014-09-17 | The hydraulic expansion cone of a kind of energy self-constriction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265222A (en) * | 2014-09-17 | 2015-01-07 | 中国石油天然气股份有限公司 | Hydraulic expansion cone capable of realizing self-constriction |
| CN106437591A (en) * | 2016-11-25 | 2017-02-22 | 中国石油大学(华东) | Hydraulic ball-type casing reshaping device |
-
2014
- 2014-09-17 CN CN201420535424.3U patent/CN204113171U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265222A (en) * | 2014-09-17 | 2015-01-07 | 中国石油天然气股份有限公司 | Hydraulic expansion cone capable of realizing self-constriction |
| CN106437591A (en) * | 2016-11-25 | 2017-02-22 | 中国石油大学(华东) | Hydraulic ball-type casing reshaping device |
| CN106437591B (en) * | 2016-11-25 | 2018-09-04 | 中国石油大学(华东) | A kind of hydraulic pressure ball type truing device for sleeve pipes |
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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: 20150121 |