CN104499989A - Fully-enclosed track anchoring mechanism with function of sand prevention - Google Patents
Fully-enclosed track anchoring mechanism with function of sand prevention Download PDFInfo
- Publication number
- CN104499989A CN104499989A CN201410819040.9A CN201410819040A CN104499989A CN 104499989 A CN104499989 A CN 104499989A CN 201410819040 A CN201410819040 A CN 201410819040A CN 104499989 A CN104499989 A CN 104499989A
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- China
- Prior art keywords
- track
- sand
- enclosed
- anchor
- slips
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1293—Packers; Plugs with mechanical slips for hooking into the casing with means for anchoring against downward and upward movement
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to an anchoring assembly of a mechanical packer for an oil field, particularly to a fully-enclosed track anchoring mechanism with the function of sand prevention. The fully-enclosed track anchoring mechanism comprises an upper connector, a track central pipe connected with the lower part of the upper connector and an anchoring assembly sleeving the track central pipe, wherein a switching pin is arranged at the inner end of the lower part of the anchoring assembly, and inserted into a track groove of the track central pipe; the lower end of the anchoring assembly is connected with a sand preventing sleeve; the track groove of the track central pipe is covered with the anchoring assembly and the sand preventing sleeve. The fully-enclosed track anchoring mechanism can well overcome the defects that the anchoring assembly and the track pipe have high possibility of being out of operation when foreign materials are clamped in the anchoring assembly and the track pipe; by being matched with a centering guide, the fully-enclosed track anchoring mechanism greatly improves working efficiency of underground operation, and reduces the manufacturing cost.
Description
Technical field
The present invention relates to the anchor of oil field mechanical packer, be specifically related to a kind of totally-enclosed track anchor mechanism with sand-proof function, be applied to the continuous pressing crack construction of dynamic tubing string jetting, as end packer anchor mechanism.
Background technology
Rail mounted anchor mechanism is the anchor mechanism that a kind of downhole tool and tubing string are conventional, and realized the grappling of tubing string and instrument by the mode of put-on and delegated tubing string, it has simple to operate, grappling reliably advantage extensive use.
As Chinese patent CN202338266U, disclosing one can anchoring type cup packer, it includes a leather cup packing portion and an anchor, described anchor comprises a track centers pipe, a cone and a slips righting mechanism, wherein, the lower end in described leather cup packing portion is connected by the upper end of described cone with described track centers pipe, and the lower end of described track centers pipe is connected with a lower contact, and described slips righting mechanism is mobile is set on described track centers pipe.Operationally can be anchored on a certain permanent position in oil well casing, can prevent cup packer from wriggling up and down with oil pipe and cause sealing cup to damage, overcome oil pipe and to wriggle the Problem Technical causing leather cup rubber to damage.
But the track groove of conventional rail mounted anchor mechanism is outside exposed, anchor can be caused to lose efficacy, causing constructing unsuccessfully when being applied to the pit shaft containing impurity such as a large amount of sand grains.Such as above-mentioned can anchoring type cup packer, can find out that its track centers pipe is exposed from its structure, easily allow in the anchoring structure of the impurity accesss to plant such as sand grains, cause the inefficacy of anchor.
Summary of the invention
The object of the invention is to overcome existing conventional anchor mechanism due to the situation that well liquid contains the impurity such as sand causes the idle problem of anchor mechanism, and that improves the downhole tools such as packer is constructed into power.
For this reason, the invention provides a kind of totally-enclosed track anchor mechanism with sand-proof function, comprise top connection, be connected to the track centers pipe of top connection bottom, the anchor be sleeved on track centers pipe, described the inner, anchor bottom is provided with switching pin, switching pin is plugged in the track groove of track centers pipe, anchor lower end connects anti-sand sleeve, and the track groove of track centers pipe covers by anchor and anti-sand sleeve.
The track groove of described track centers pipe comprises radial elongated slot and radial short groove, is provided with communicating passage between elongated slot and short groove.
Described anchor comprises conical surface slips, wiper block and slip ring sheath, slips is arranged on slip spider, wiper block is arranged on righting block, slip spider lower end connects the upper end of righting block, the lower end connection slip ring sheath of righting block, slip ring jacket inner wall radial direction is provided with switching pin, and slide rail pin is embedded in the track groove of described track centers tube outer surface formation movably, and slip ring sheath bottom is threaded connection anti-sand sleeve.
Described righting block and the connecting portion of slip spider run through the first retaining pin, and slip ring sheath bottom and anti-sand sleeve connecting portion run through the second retaining pin.
Described slips top inner conical surface slides with top connection male cone (strobilus masculinus) and coordinates, and slips bottom radial direction offers the first press spring base, and in the first press spring base, radial direction is provided with the first stage clip, and in the middle part of slips, overcoat has slips baffle ring.
On described wiper block inwall, axial distribution has two the second press spring bases, and in the second press spring base, radial direction is provided with the second stage clip, wiper block together with the second compression spring sleeve on righting block outer wall.
Described slip ring sheath upper end is provided with convex edge, and convex edge inwall is provided with the internal thread be connected with righting block lower end, and wiper block lower end is blocked in the end of convex edge, is socketed with wiper block pressure cap outside the upper end of wiper block.
Described convex edge and righting block lower end link position run through the 3rd retaining pin.
Be provided with sliding ring bottom the inwall of described slips and between track centers pipe, between described anti-sand sleeve and track centers pipe, be also provided with sliding ring.
Beneficial effect of the present invention: this totally-enclosed track anchor mechanism of the present invention, anchor and track Guan Yi can be solved preferably and snap in the defect that foreign matter lost efficacy, coordinate with centralizer one, drastically increase the operating efficiency of underground work, reduce cost of production.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Description of reference numerals: 1, top connection; 2, slips; 3, slips baffle ring; 4, elongated slot; 5, righting block; 6, slip spider; 7, the first retaining pin; 8, wiper block pressure cap; 9, wiper block; 10, short groove; 11, slip ring sheath; 12, the 3rd retaining pin; 13, convex edge; 14, pin is switched; 15, the second retaining pin; 16, anti-sand sleeve; 17, track centers pipe; 18, the first press spring base; 19, the first stage clip; 20, the second press spring base; 21, the second stage clip.
Detailed description of the invention
Embodiment 1:
The present embodiment provides a kind of totally-enclosed track anchor mechanism with sand-proof function, as shown in Figure 1, comprise top connection 1, be connected to the track centers pipe 17 of top connection 1 bottom, the anchor be sleeved on track centers pipe 17, described the inner, anchor bottom is provided with and switches pin 14, switching pin 14 is plugged in the track groove of track centers pipe 17, anchor lower end connects anti-sand sleeve 16, and the track groove of track centers pipe 17 covers by anchor and anti-sand sleeve 16.
In the process of put-on and delegated tubing string, anchor can slide on track central tube 17, switch pin 14 and convert the position in the track groove of track central tube 17, anchoring states can be realized, in existing device, anchor is always outside exposed, easily make the impurity such as gravel enter anchor mechanism and cause damage, and arranging of anti-sand sleeve 16 can make anchor and track groove all seal in the present embodiment, other impurity can not be made to enter in the process that anchor slides, can guarantee that device runs long-term effectively.
Embodiment 2:
On the basis of embodiment 1, in the present embodiment, the track groove of track centers pipe 17 comprises radial elongated slot 4 and radial short groove 10, is provided with communicating passage between elongated slot 4 and short groove 10.
Anchor comprises conical surface slips 2, wiper block 9 and slip ring sheath 11, slips 2 is arranged on slip spider 6, wiper block 9 is arranged on righting block 5, slip spider 6 lower end connects the upper end of righting block 5, the lower end connection slip ring sheath 11 of righting block 5, slip ring sheath 11 inwall radial direction is provided with and switches pin 14, and slide rail pin 14 is embedded in the track groove of described track centers pipe 17 external surface formation movably, and slip ring sheath 11 bottom is threaded connection anti-sand sleeve 16.
Slips 2 top inner conical surface slides with top connection 1 male cone (strobilus masculinus) and coordinates, and slips 2 bottom radial direction offers radial direction in the first press spring base 18, first press spring base 18 and is provided with the first stage clip 19, and in the middle part of slips 2, overcoat has slips baffle ring 3.
When switching pin 14 is mobile in short groove 10 time, the distance that anchor moves can not make slips 2 prop up top connection 1, now grappling cannot be carried out, when switching pin 14 is mobile in elongated slot 4 time, the distance that anchor moves is longer, and slips 2 can prop up top connection 1, coordinate because slips 2 top inner conical surface slides with top connection 1 male cone (strobilus masculinus), now slips 2 starts to open, and opens up into a certain degree and can be stuck on sleeve pipe, realize the grappling of tubing string.
The connecting portion of righting block 5 and slip spider 6 runs through the first retaining pin 7, slip ring sheath 11 bottom and anti-sand sleeve 16 connecting portion run through the second retaining pin 15, the connection of righting block 5 and slip spider 6 and the connection of slip ring sheath 11 bottom and anti-sand sleeve 16 all adopt the mode be threaded, first retaining pin 7 and the second retaining pin 15 can carry out fastening, anti-retaining button.
Embodiment 3:
In the present embodiment, on wiper block 9 inwall, axial distribution has radial direction in two the second press spring base 20, second press spring bases 20 to be provided with the second stage clip 21, and wiper block 9 is enclosed within righting block 5 outer wall together with the second stage clip 21.
Wiper block 9 centralizing functions, as shown in Figure 1, the second stage clip 21 can make wiper block 9 radially shrink, and plays certain cushioning effect.
Slip ring sheath 11 upper end is provided with convex edge 13; convex edge 13 inwall is provided with the internal thread be connected with righting block 5 lower end; wiper block 9 lower end is blocked in the end of convex edge 13; be socketed with wiper block pressure cap 8 outside the upper end of wiper block 9, convex edge 13 and wiper block pressure cap 8 can play certain protective effect to wiper block 9.
Convex edge 13 and righting block 5 lower end link position run through has the 3rd retaining pin the 12, three retaining pin 12 can carry out fastening to the connection that is threaded of convex edge 13 and righting block 5 lower end, anti-retaining button.
Embodiment 4:
In the present embodiment, sliding ring is provided with bottom the inwall of slips 2 and between track centers pipe 17, also sliding ring is provided with between described anti-sand sleeve 16 and track centers pipe 17, sliding ring the effect playing sealing is set, sliding ring bottom the inwall of slips 2 and between track centers pipe 17 seals anchor top, sliding ring between anti-sand sleeve 16 and track centers pipe 17 seals anchor bottom, like this in the process of anchor slip, remain sealing state, the impurity accesss to plant such as gravel can not be made to cause damage.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (9)
1. one kind has the totally-enclosed track anchor mechanism of sand-proof function, comprise top connection (1), be connected to the track centers pipe (17) of top connection (1) bottom, the anchor be sleeved on track centers pipe (17), it is characterized in that: described the inner, anchor bottom is provided with and switches pin (14), switching pin (14) is plugged in the track groove of track centers pipe (17), anchor lower end connects anti-sand sleeve (16), and the track groove of track centers pipe (17) covers by anchor and anti-sand sleeve (16).
2. there is the totally-enclosed track anchor mechanism of sand-proof function as claimed in claim 1, it is characterized in that: the track groove of described track centers pipe (17) comprises radial elongated slot (4) and radial short groove (10), is provided with communicating passage between elongated slot (4) and short groove (10).
3. there is the totally-enclosed track anchor mechanism of sand-proof function as claimed in claim 1, it is characterized in that: described anchor comprises the slips of the conical surface (2), wiper block (9) and slip ring sheath (11), slips (2) is arranged on slip spider (6), wiper block (9) is arranged on righting block (5), slip spider (6) lower end connects the upper end of righting block (5), lower end connection slip ring sheath (11) of righting block (5), slip ring sheath (11) inwall radial direction is provided with and switches pin (14), slide rail pin (14) is embedded in the track groove of described track centers pipe (17) external surface formation movably, slip ring sheath (11) bottom is threaded connection anti-sand sleeve (16).
4. there is the totally-enclosed track anchor mechanism of sand-proof function as claimed in claim 3, it is characterized in that: described righting block (5) and the connecting portion of slip spider (6) run through the first retaining pin (7), and slip ring sheath (11) bottom and anti-sand sleeve (16) connecting portion run through the second retaining pin (15).
5. there is the totally-enclosed track anchor mechanism of sand-proof function as claimed in claim 3, it is characterized in that: described slips (2) top inner conical surface slides with top connection (1) male cone (strobilus masculinus) and coordinates, slips (2) bottom radial direction offers the first press spring base (18), first press spring base (18) interior radial direction is provided with the first stage clip (19), and slips (2) middle part overcoat has slips baffle ring (3).
6. there is the totally-enclosed track anchor mechanism of sand-proof function as claimed in claim 3, it is characterized in that: on described wiper block (9) inwall, axial distribution has two the second press spring bases (20), second press spring base (20) interior radial direction is provided with the second stage clip (21), and wiper block (9) is enclosed within righting block (5) outer wall together with the second stage clip (21).
7. there is the totally-enclosed track anchor mechanism of sand-proof function as claimed in claim 6, it is characterized in that: described slip ring sheath (11) upper end is provided with convex edge (13), convex edge (13) inwall is provided with the internal thread be connected with righting block (5) lower end, wiper block (9) lower end is blocked in the end of convex edge (13), is socketed with wiper block pressure cap (8) outside the upper end of wiper block (9).
8. there is the totally-enclosed track anchor mechanism of sand-proof function as claimed in claim 7, it is characterized in that: described convex edge (13) and righting block (5) lower end link position run through the 3rd retaining pin (12).
9. the totally-enclosed track anchor mechanism with sand-proof function as described in claim 3 or 4 or 5 or 6 or 7 or 8, it is characterized in that: bottom the inwall of described slips (2) and between track centers pipe (17), be provided with sliding ring, between described anti-sand sleeve (16) and track centers pipe (17), be also provided with sliding ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819040.9A CN104499989A (en) | 2014-12-25 | 2014-12-25 | Fully-enclosed track anchoring mechanism with function of sand prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819040.9A CN104499989A (en) | 2014-12-25 | 2014-12-25 | Fully-enclosed track anchoring mechanism with function of sand prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104499989A true CN104499989A (en) | 2015-04-08 |
Family
ID=52941429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410819040.9A Pending CN104499989A (en) | 2014-12-25 | 2014-12-25 | Fully-enclosed track anchoring mechanism with function of sand prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104499989A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368635A (en) * | 2015-07-24 | 2017-02-01 | 天津统晟石油科技有限公司 | Novel open hole anchor |
| CN109098689A (en) * | 2018-08-31 | 2018-12-28 | 康庆刚 | Energy saving and environment friendly leather cup pressure release type hot wash not pressure oil layer device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438811A (en) * | 1982-08-16 | 1984-03-27 | Otid Engineering Corporation | Latch for use in a well |
| CN2177799Y (en) * | 1993-12-28 | 1994-09-21 | 新疆石油管理局试油处 | Packer |
| CN2851548Y (en) * | 2005-06-20 | 2006-12-27 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Slip type packer |
| CN201228530Y (en) * | 2008-07-23 | 2009-04-29 | 孔宪春 | Anchoring means for oil pipe |
| US20120160523A1 (en) * | 2010-12-28 | 2012-06-28 | Texproil S.R.L. | Downhole packer tool with safety systems for preventing undue set and release operations |
| CN202325383U (en) * | 2011-12-01 | 2012-07-11 | 阜新驰宇石油机械有限公司 | Drag fracturing packer for horizontal well |
| CN202338266U (en) * | 2011-12-02 | 2012-07-18 | 中国石油天然气股份有限公司 | Cup-type packer capable of being anchored |
| CN204419113U (en) * | 2014-12-25 | 2015-06-24 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of totally-enclosed track anchor mechanism with sand-proof function |
-
2014
- 2014-12-25 CN CN201410819040.9A patent/CN104499989A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438811A (en) * | 1982-08-16 | 1984-03-27 | Otid Engineering Corporation | Latch for use in a well |
| CN2177799Y (en) * | 1993-12-28 | 1994-09-21 | 新疆石油管理局试油处 | Packer |
| CN2851548Y (en) * | 2005-06-20 | 2006-12-27 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Slip type packer |
| CN201228530Y (en) * | 2008-07-23 | 2009-04-29 | 孔宪春 | Anchoring means for oil pipe |
| US20120160523A1 (en) * | 2010-12-28 | 2012-06-28 | Texproil S.R.L. | Downhole packer tool with safety systems for preventing undue set and release operations |
| CN202325383U (en) * | 2011-12-01 | 2012-07-11 | 阜新驰宇石油机械有限公司 | Drag fracturing packer for horizontal well |
| CN202338266U (en) * | 2011-12-02 | 2012-07-18 | 中国石油天然气股份有限公司 | Cup-type packer capable of being anchored |
| CN204419113U (en) * | 2014-12-25 | 2015-06-24 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of totally-enclosed track anchor mechanism with sand-proof function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368635A (en) * | 2015-07-24 | 2017-02-01 | 天津统晟石油科技有限公司 | Novel open hole anchor |
| CN106368635B (en) * | 2015-07-24 | 2019-08-13 | 山东四通石油技术开发有限公司 | A kind of novel open hole well anchor |
| CN109098689A (en) * | 2018-08-31 | 2018-12-28 | 康庆刚 | Energy saving and environment friendly leather cup pressure release type hot wash not pressure oil layer device |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |
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| RJ01 | Rejection of invention patent application after publication |