CN205135419U - Hole enlargement ware in pit - Google Patents
Hole enlargement ware in pit Download PDFInfo
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- CN205135419U CN205135419U CN201520884673.8U CN201520884673U CN205135419U CN 205135419 U CN205135419 U CN 205135419U CN 201520884673 U CN201520884673 U CN 201520884673U CN 205135419 U CN205135419 U CN 205135419U
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Abstract
The utility model relates to a hole enlargement ware in pit, include outer barrel and the interior barrel established with the axle sleeve, interior barrel includes circulating pipe and fluid damping device, and the setting of circulating pipe endwise slip is internal at the urceolus, is equipped with an axial passage in the circulating pipe, overlaps outside the circulating pipe and between the outer barrel to be equipped with compression spring. The fluid damping device is established and internal and lie in the upper end of circulating pipe at the urceolus, is equipped with the damping runner in the fluid damping device, damping runner and axial passage intercommunication, be equipped with a plurality of hole enlargement claws on the outer barrel, the hole enlargement claw hinges on outer barrel along even setting the all around of outer barrel, the upper end of hole enlargement claw, and the lower extreme of hole enlargement claw is holding along the radial swinging's of outer barrel swing, wherein, the lower extreme of circulating pipe constitutes the promotion end that promotes hole enlargement claw inside wall and make the outside side oscillation of hole enlargement claw. The utility model provides a cover of the little sleeve pipe well completion sidetracking that decreases the well reform transform a difficult problem, and enlarged the annular space clearance, increased cement ring thickness, improve the cementing quality.
Description
Technical field
The utility model is the oil-gas field development instrument about expanding hole diameter after a kind of slim-hole window sidetracking and slimhole drilling, particularly relates to a kind of down-hole Expending device.
Background technology
Before Qinghai Oil Field, completion adopts the sleeve pipe of Φ 177.8mm, in this big hole, the technology of sidetracking is ripe, and the well developed in recent years all adopts the small casing completion of Φ 139.7mm substantially, and the cover damage improvement faced after small casing completion encounters problem.The sleeve pipe of lower Φ 101.6mm in Φ 118mm well, the size not only entering down sleeve pipe is restricted, and shell clearance is little, completion practice difficulty, the phenomenon of ubiquity cementing quality difference.This phenomenon has become " bottleneck " technology of serious restriction window sidetracking directional well.Sidetracking at present for the casing damaged well adopting the small casing completion of Φ 139.7mm is transformed, and does not also have small casing SIDETRACKING TECHNOLOGY and instrument.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of down-hole Expending device, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of down-hole Expending device, solves a sidetracking transformation difficult problem for the casing damaged well of small casing completion, and expands annular clearance, increase cement thickness, improve cementing quality.
The purpose of this utility model is achieved in that a kind of down-hole Expending device, and described down-hole Expending device comprises coaxially sheathed outer cylinder body and inner barrel, and described inner barrel comprises:
Circulation pipe, described circulation pipe is arranged in described outer cylinder body in axial sliding, the first axial passage is provided with in described circulation pipe, Compress Spring is arranged with outside described circulation pipe and between described outer cylinder body, the upper end of described Compress Spring is resisted against on described circulation pipe, and the lower end abutment of described Compress Spring is on described outer cylinder body;
Fluid damping device, described fluid damping device to be arranged in described outer cylinder body and to be positioned at the upper end of described circulation pipe, and be provided with damping flow channel in described fluid damping device, described damping flow channel is communicated with described first axial passage;
Described outer cylinder body is provided with multiple expanding pawl, and described expanding pawl is evenly arranged along the surrounding of described outer cylinder body, and the upper end thereof of described expanding pawl is on described outer cylinder body, and the lower end of described expanding pawl is the swinging end radially wobbled along described outer cylinder body;
Wherein, the lower end of described circulation pipe forms the promote-side promoting described expanding pawl inside wall and described expanding pawl is swung laterally.
In a better embodiment of the present utility model, described fluid damping device comprises:
Nozzle, described nozzle is coaxially fixed on the upper end of described circulation pipe, and the central authorities of described nozzle are provided with the second axial passage, and described second axial passage is communicated with described first axial passage;
Circulating valve, described circulating valve to be fixedly installed in described outer cylinder body and to be positioned at the top of described circulation pipe, the central authorities of described circulating valve are provided with locating shaft fixing hole, the side described circulating valve being positioned at described locating shaft fixing hole is provided with the 3rd axial passage, and described 3rd axial passage is communicated with the second axial passage with described first axial passage;
Locating shaft, the upper end of described locating shaft is fixed in described locating shaft fixing hole, and the lower end of described locating shaft is to downward-extension and extend in described first axial passage through described second axial passage; Form annular gap between described locating shaft and described second axial passage, described annular gap forms described damping flow channel.
In a better embodiment of the present utility model, the internal diameter on described second axial passage top is greater than the internal diameter of bottom, forms the runner form of shrinking gradually from top to bottom; The internal diameter of described first axial passage is greater than the internal diameter of described second axial passage bottom.
In a better embodiment of the present utility model, described 3rd axial passage is evenly provided with multiple around described locating shaft fixing hole; The lower surface of described circulating valve is provided with the connected space of indent, and described 3rd axial passage is communicated with described second axial passage by described connected space.
In a better embodiment of the present utility model, the upper surface of described circulation pipe is provided with groove, and described nozzle is inlaid in described groove.
In a better embodiment of the present utility model, the inner side on described expanding pawl top is provided with lug boss; The lower outside face of described circulation pipe is provided with the groove of pulling back extended vertically, described in the pull back position of groove corresponding with the lug boss of described expanding pawl, and described lug boss extend into described in pull back in groove, together with being hooked on the lower surface of described groove of pulling back when pulling back.
In a better embodiment of the present utility model, described outer cylinder body is cylindric, and its circumferencial direction is evenly provided with multiple mounting groove, and described mounting groove extends vertically and is communicated with described outer cylinder body inside; A support claw seat is fixed in the upper end of each mounting groove, and described expanding pawl is arranged in described mounting groove by described support claw seat, described expanding pawl upper end by pin-hinges on described support claw seat; The lower end of each mounting groove fixes one for the pressing plate of pawl swinging end expanding described in backstop.
In a better embodiment of the present utility model, described outer cylinder body comprise be threaded successively from top to bottom top connection, body and drill bit; The circumferencial direction of described body is evenly provided with four described mounting grooves, and the outside of described body is fixed with multiple gauge teeth be made up of high-abrasive material.
In a better embodiment of the present utility model, the lateral wall of described expanding pawl is fixed with hard-metal insert, outside described drill bit, is fixed with multiple abrasionproof alloy block and diamond blade.
From the above mentioned, the caliper expansion scope of this down-hole Expending device is large, can by the hole diameter of the caliper expansion of Φ 118mm well to nearly Φ 140mm.Well bore logging instrument after expansion is easy to be disposable lower to shaft bottom, reduces drifting number of times.Because annular space not easily suppresses Lou stratum comparatively greatly during casing job, under enter smoothly.Expand annular clearance, increase cement thickness, can cementing quality be improved.Slim-hole window sidetracking well is than beating a bite offset well cost-saving about 50%.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be the longitudinal sectional view of the utility model down-hole Expending device.
Fig. 2: be longitudinal half sectional view of the utility model down-hole Expending device.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.
As depicted in figs. 1 and 2, in figure, left side is upper end, and right side is lower end, and horizontal direction is the axis of down-hole Expending device.The utility model provides a kind of down-hole Expending device 100, and down-hole Expending device 100 comprises coaxially sheathed outer cylinder body and inner barrel.Inner barrel comprises circulation pipe 7, fluid damping device.Circulation pipe 7 is arranged in outer cylinder body in axial sliding, the first axial passage 71 is provided with in circulation pipe 7, Compress Spring 8 is arranged with outside circulation pipe 7 and between outer cylinder body, Compress Spring 8 coaxial sleeve is located at the outside of circulation pipe 7, the upper end of Compress Spring 8 is resisted against on circulation pipe 7, and the lower end abutment of Compress Spring 8 is on outer cylinder body; Compressed by this Compress Spring 8 after circulation pipe 7 moves down, Compress Spring 8 pairs of circulation pipes 7 apply a restoring force upwards.Fluid damping device to be arranged in outer cylinder body and to be positioned at the upper end of circulation pipe 7, and be provided with damping flow channel in fluid damping device, damping flow channel is communicated with the first axial passage 71; Pressure Drop is produced when fluid flows through from this damping flow channel, the pressure above damping flow channel is made to be greater than the pressure of below, namely when fluid flows through the first axial passage 71, pressure above circulation pipe 7 first axial passage 71 is greater than the pressure of the first axial passage 71 inside, and this pressure differential acts on circulation pipe 7 and makes its slide downward.Outer cylinder body is provided with expanding pawl 16, and expanding pawl 16 is evenly arranged along the surrounding of outer cylinder body, and the upper end thereof of expanding pawl 16, on outer cylinder body, makes this expanding pawl 16 can around hinged place radially wobbling along outer cylinder body, and the lower end of expanding pawl 16 is swinging end.This expanding pawl 16 can extend outward to outer cylinder body outside and inwardly be retracted to outer cylinder body inside.Wherein, the lower end of circulation pipe 7 forms the promote-side promoting expanding pawl 16 inside wall and expanding pawl 16 is swung laterally.
When after down-hole Expending device 100 times to the well section needing to expand hole diameter, first open pump circulating fluid, Pressure Drop is produced when drilling fluid passes through the damping flow channel of fluid damping device, promote circulation pipe 7 to move downward, the promote-side of circulation pipe 7 promotes the inside wall of expanding pawl 16, expanding pawl 16 is swung laterally and reaches outer cylinder body outside, thus expanding pawl 16 pairs of boreholes wall cut, and under certain the pressure of the drill, promote the descending expansion hole diameter of whole drilling tool.When drilling fluid stop by fluid damping device after, act on the pressure difference ends on circulation pipe 7, under the effect of Compress Spring 8, circulation pipe 7 is returned to original position, inside expanding pawl 16 support distress resolves after-contraction to outer cylinder body inside.
As a detailed description of the invention of the present utility model, fluid damping device comprises nozzle 6, circulating valve 3 and locating shaft 4.Nozzle 6 is coaxially fixed on the upper end of circulation pipe 7, and the upper surface of circulation pipe 7 is provided with groove, and nozzle 6 setting-in moves in a groove together with circulation pipe 7.The central authorities of nozzle 6 are provided with the second axial passage 61, second axial passage 61 and are communicated with the first axial passage 71.Concrete, the internal diameter on the second axial passage 61 top is greater than the internal diameter of bottom, forms the runner form of shrinking gradually from top to bottom.Circulating valve 3 to be fixedly installed in outer cylinder body and to be positioned at the top of circulation pipe 7; Inner barrel and outer cylinder body are generally cylindric, outer cylinder body comprise be threaded successively from top to bottom top connection 1, body 9 and drill bit 22, the upper outside of cylindric circulation pipe 7 is provided with to be formed inside sealing ring 5 and body 9 and seals.Columned circulating valve 3 is located at top connection 1 and body 9 junction, after top connection 1 and body 9 are threaded, can be fixedly clamped between top connection 1 and body 9 by circulating valve 3; Simultaneously the outside of circulating valve 3 is provided with O RunddichtringO 2, and is formed between the inner side of top connection 1 and body 9 and seal.The central authorities of circulating valve 3 are provided with locating shaft 4 fixing hole, and side circulating valve 3 being positioned at locating shaft 4 fixing hole is provided with the 3rd axial passage 31, can evenly arrange multiple 3rd axial passage 31 around locating shaft 4 fixing hole.3rd axial passage 31 is communicated with the second axial passage 61 with the first axial passage 71; Concrete, the lower surface of circulating valve 3 is provided with the connected space of indent, and the 3rd axial passage 31 is communicated with the second axial passage 61 by connected space.Locating shaft 4 is a stock shape part extended vertically, and the upper end of locating shaft 4 is fixed in locating shaft 4 fixing hole, and the lower end of locating shaft 4 extend in the first axial passage 71 to downward-extension and through the second axial passage 61 of nozzle 6; The diameter of locating shaft 4 is less than the internal diameter of the second axial passage 61, thus forms annular gap between locating shaft 4 and the second axial passage 61, and this annular gap forms damping flow channel.
In a selectable replacement scheme, nozzle 6 can be adopted, the lower end of locating shaft 4 extend in the first axial passage 71 of circulation pipe 7 downwards, the diameter of locating shaft 4 is less than the internal diameter of the first axial passage 71, thus annular gap is formed between locating shaft 4 and the first axial passage 71, this annular gap forms damping flow channel.
Further, the circumferencial direction of outer cylinder body is evenly provided with multiple mounting groove, is specifically evenly provided with four mounting grooves at the circumferencial direction of body 9, and mounting groove extends vertically and is communicated with outer cylinder body inside.A support claw seat 12 is fixed in the upper end of each mounting groove, and support claw seat 12 is fixedly connected on body 9 by screw 10 and pad 11, and expanding pawl 16 is arranged in mounting groove by support claw seat 12, and expanding pawl 16 upper end is hinged on support claw seat 12 by pin 13.A pressing plate 20 is fixed in the lower end of each mounting groove, and pressing plate 20 is fixed on body 9 by screw 21, for the swinging end of the expanding pawl 16 of backstop, prevents swinging end from departing from the outside of mounting groove.In order to make four expanding pawls 16 can well be retracted in body 9, wherein relative two expanding pawl 16 length are longer, and two other relative expanding pawl 16 length is shorter, form the expanding pawl 16 of two couples that staggers and can not produce interference; Certainly, also can reach by the shape and size changing expanding pawl 16 object not producing interference.The inner side on expanding pawl 16 top is provided with lug boss 161, and the position of lug boss 161 should be tried one's best near hinged turning cylinder place, expanding pawl 16 can be driven to swing to body 9 inside during the power being subject to upwards with this lug boss 161 of box lunch.The lower outside face of circulation pipe 7 is provided with the groove 72 of pulling back extended vertically, the pull back position of groove 72 is corresponding with the lug boss 161 of expanding pawl 16, and lug boss 161 extend into and pulls back in groove 72, together with lug boss 161 is hooked on the lower surface of groove 72 of pulling back when pulling back; Namely when circulation pipe 7 moves up under the effect of Compress Spring 8, the lower surface of groove 72 of pulling back touches corresponding lug boss 161, to the power that lug boss 161 applies upwards, makes lug boss 161 drive expanding pawl 16 to swing to body 9 inside.The lateral wall of expanding pawl 16 is fixed with hard-metal insert 18, and the outside of body 9 is fixed with multiple gauge teeth 19 be made up of high-abrasive material, prevents body 9 from wearing and tearing.Drill bit 22 is connected to the lower end of body 9 by screw 30, is fixed with multiple abrasionproof alloy block 23 and diamond blade 25 outside drill bit 22.The maximum outside diameter of down-hole Expending device 100 is 114mm, and it is 140mm that expanding pawl 16 opens rear diameter completely, can be used in the expanding construction of Φ 118mm well.
From the above mentioned, the caliper expansion scope of this down-hole Expending device is large, can by the hole diameter of the caliper expansion of Φ 118mm well to nearly Φ 140mm.Well bore logging instrument after expansion is easy to be disposable lower to shaft bottom, reduces drifting number of times.Because annular space not easily suppresses Lou stratum comparatively greatly during casing job, under enter smoothly.Expand annular clearance, increase cement thickness, can cementing quality be improved.Slim-hole window sidetracking well is than beating a bite offset well cost-saving about 50%.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (9)
1. a down-hole Expending device, described down-hole Expending device comprises coaxially sheathed outer cylinder body and inner barrel, it is characterized in that, described inner barrel comprises:
Circulation pipe, described circulation pipe is arranged in described outer cylinder body in axial sliding, the first axial passage is provided with in described circulation pipe, Compress Spring is arranged with outside described circulation pipe and between described outer cylinder body, the upper end of described Compress Spring is resisted against on described circulation pipe, and the lower end abutment of described Compress Spring is on described outer cylinder body;
Fluid damping device, described fluid damping device to be arranged in described outer cylinder body and to be positioned at the upper end of described circulation pipe, and be provided with damping flow channel in described fluid damping device, described damping flow channel is communicated with described first axial passage;
Described outer cylinder body is provided with multiple expanding pawl, and described expanding pawl is evenly arranged along the surrounding of described outer cylinder body, and the upper end thereof of described expanding pawl is on described outer cylinder body, and the lower end of described expanding pawl is the swinging end radially wobbled along described outer cylinder body;
Wherein, the lower end of described circulation pipe forms the promote-side promoting described expanding pawl inside wall and described expanding pawl is swung laterally.
2. down-hole as claimed in claim 1 Expending device, it is characterized in that, described fluid damping device comprises:
Nozzle, described nozzle is coaxially fixed on the upper end of described circulation pipe, and the central authorities of described nozzle are provided with the second axial passage, and described second axial passage is communicated with described first axial passage;
Circulating valve, described circulating valve to be fixedly installed in described outer cylinder body and to be positioned at the top of described circulation pipe, the central authorities of described circulating valve are provided with locating shaft fixing hole, the side described circulating valve being positioned at described locating shaft fixing hole is provided with the 3rd axial passage, and described 3rd axial passage is communicated with the second axial passage with described first axial passage;
Locating shaft, the upper end of described locating shaft is fixed in described locating shaft fixing hole, and the lower end of described locating shaft is to downward-extension and extend in described first axial passage through described second axial passage; Form annular gap between described locating shaft and described second axial passage, described annular gap forms described damping flow channel.
3. down-hole as claimed in claim 2 Expending device, it is characterized in that, the internal diameter on described second axial passage top is greater than the internal diameter of bottom, forms the runner form of shrinking gradually from top to bottom; The internal diameter of described first axial passage is greater than the internal diameter of described second axial passage bottom.
4. down-hole as claimed in claim 2 or claim 3 Expending device, it is characterized in that, described 3rd axial passage is evenly provided with multiple around described locating shaft fixing hole; The lower surface of described circulating valve is provided with the connected space of indent, and described 3rd axial passage is communicated with described second axial passage by described connected space.
5. down-hole as claimed in claim 4 Expending device, it is characterized in that, the upper surface of described circulation pipe is provided with groove, and described nozzle is inlaid in described groove.
6. down-hole as claimed in claim 1 or 2 Expending device, it is characterized in that, the inner side on described expanding pawl top is provided with lug boss; The lower outside face of described circulation pipe is provided with the groove of pulling back extended vertically, described in the pull back position of groove corresponding with the lug boss of described expanding pawl, and described lug boss extend into described in pull back in groove, together with being hooked on the lower surface of described groove of pulling back when pulling back.
7. down-hole as claimed in claim 6 Expending device, it is characterized in that, described outer cylinder body is cylindric, and its circumferencial direction is evenly provided with multiple mounting groove, and described mounting groove extends vertically and is communicated with described outer cylinder body inside; A support claw seat is fixed in the upper end of each mounting groove, and described expanding pawl is arranged in described mounting groove by described support claw seat, described expanding pawl upper end by pin-hinges on described support claw seat; The lower end of each mounting groove fixes one for the pressing plate of pawl swinging end expanding described in backstop.
8. down-hole as claimed in claim 7 Expending device, is characterized in that, described outer cylinder body comprise be threaded successively from top to bottom top connection, body and drill bit; The circumferencial direction of described body is evenly provided with four described mounting grooves, and the outside of described body is fixed with multiple gauge teeth be made up of high-abrasive material.
9. down-hole as claimed in claim 8 Expending device, is characterized in that, the lateral wall of described expanding pawl is fixed with hard-metal insert, be fixed with multiple abrasionproof alloy block and diamond blade outside described drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884673.8U CN205135419U (en) | 2015-11-09 | 2015-11-09 | Hole enlargement ware in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884673.8U CN205135419U (en) | 2015-11-09 | 2015-11-09 | Hole enlargement ware in pit |
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| Publication Number | Publication Date |
|---|---|
| CN205135419U true CN205135419U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520884673.8U Active CN205135419U (en) | 2015-11-09 | 2015-11-09 | Hole enlargement ware in pit |
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| CN (1) | CN205135419U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952380A (en) * | 2016-06-17 | 2016-09-21 | 四川众基精锚工程技术有限公司 | Die chambering equipment and chambering method thereof |
| CN112252983A (en) * | 2020-11-04 | 2021-01-22 | 中国矿业大学(北京) | Hydraulic hole expanding drill bit |
| CN112901102A (en) * | 2019-12-04 | 2021-06-04 | 中国石油天然气股份有限公司 | Oil-water well casing deformation treatment device and method |
-
2015
- 2015-11-09 CN CN201520884673.8U patent/CN205135419U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952380A (en) * | 2016-06-17 | 2016-09-21 | 四川众基精锚工程技术有限公司 | Die chambering equipment and chambering method thereof |
| CN112901102A (en) * | 2019-12-04 | 2021-06-04 | 中国石油天然气股份有限公司 | Oil-water well casing deformation treatment device and method |
| CN112252983A (en) * | 2020-11-04 | 2021-01-22 | 中国矿业大学(北京) | Hydraulic hole expanding drill bit |
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