CN203441401U - Ceramic slip composite bridge plug - Google Patents
Ceramic slip composite bridge plug Download PDFInfo
- Publication number
- CN203441401U CN203441401U CN201320473891.3U CN201320473891U CN203441401U CN 203441401 U CN203441401 U CN 203441401U CN 201320473891 U CN201320473891 U CN 201320473891U CN 203441401 U CN203441401 U CN 203441401U
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- split
- bridge plug
- composite bridge
- packing element
- type pedestal
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Abstract
The utility model discloses a ceramic slip composite bridge plug, comprising a center cylinder (1), wherein an upper lantern ring (3), a positioning cone I (6), a rubber cylinder (10), a positioning cone II (6) and a lower lantern ring (11) are sequentially sleeved outside the center cylinder (1), the lower lantern ring (11) is fixedly connected with the center cylinder (1), the upper lantern ring (3), the positioning cone I (6) and rubber cylinder (10) can all move along the axial direction of the center cylinder (1), the positioning cone II (6) is provided with a plurality of sectioning substrates (4) along the circumferential direction, and the sectioning substrates (4) are capable of moving along the generatrix direction of the positioning cone II (6). In a setting process, the sectioning substrates (4) can be cracked in a sectioning manner and embedded into the inner wall of a casing pipe, so that a firm and reliable setting effect is achieved.
Description
Technical field
The utility model relates to oil exploration equipment field, particularly a kind of ceramic slips composite bridge plug using at Oil/gas Well production casing for work progresss such as Oil/gas Well production, shutoff and fracturing reforms.
Background technology
In Oil/gas Well test process, when meeting multilayer and be stratum, the interlayer of each oil-gas-water layer there are differences and need to carry out the measures such as zonal testing, layering volume increase, now just needs to use shutoff layering instrument.For a long time, the bridging plug that the extensive employing in oil field both at home and abroad can be bored milling metal material is as Oil/gas Well layer position separating device.There is the easily shortcoming such as card, brill milling difficulty in the bridging plug of existing metal material, once there is accident in construction, process also quite trouble after construction operation.Particularly when techniques such as the pressure break for the layering of inclined shaft, horizontal well or section, acidifying, shutoff water, owing to being subject to the impact of its exceptional well body structure, this class well is when boring except metal bridging plug, easily there is especially eccentric wear milling sleeve pipe, bit freezing, drilling cuttings and return the problems such as row's difficulty, and than straight well, deal with complexity after going wrong.
Utility model content
In order to solve easy card, brill milling difficulty, the drilling cuttings of existing metal bridging plug or metal slips composite bridge plug existence when boring except construction, return the technical problems such as row's difficulty, the utility model provides a kind of ceramic slips composite bridge plug, this pottery slips composite bridge plug can be firmly setting, temporary transient packing payzone or discarded layer, complete the object of the operations such as follow-up test, fracturing reform construction.After horizontal well multistage fracturing reform construction finishes, next time be can realize and tens of quick millings, twenties, tens composite bridge plugs even bored, get through Oil/gas Well production passage.
The utility model for solving the technical scheme of its technical problem employing is: a kind of ceramic slips composite bridge plug, comprise central tube, from one end of central tube, to the other end central tube of central tube, be arranged with successively upper isolating ring, location cone, packing element, location cone and lower isolating ring, lower isolating ring is fixedly connected with central tube, upper isolating ring, location cone and packing element all can moving axially along central tube, location cone is taper, locate a plurality of split-type pedestals that are circumferentially with of cone, split-type pedestal can move along the generatrix direction of location cone.
The bottom that is arranged on the location cone between upper isolating ring and packing element is towards packing element top towards upper isolating ring, and the surface of location cone offers a plurality of guide chutes that slide for split-type pedestal along generatrix direction, and the bottom of split-type pedestal is plugged in guide chute.
The top of split-type pedestal is provided with a plurality of ceramics poles, and ceramics pole is obliquely installed, and the top of ceramics pole is towards packing element.
Location cone be circumferentially evenly distributed with 8～12 split-type pedestals, the top of each split-type pedestal is provided with 4 ceramics poles.
Split-type pedestal is connected by shear pin between cone with location, or guide chute is dovetail groove, and the bottom of split-type pedestal and this dovetail groove match.
The bottom that is arranged on the location cone between lower isolating ring and packing element is towards packing element top towards lower isolating ring, and the surface of location cone offers a plurality of guide chutes that slide for split-type pedestal along generatrix direction, and the bottom of split-type pedestal is plugged in guide chute.
Between one end of central tube and upper isolating ring, be provided with the tension ring for preventing that upper isolating ring from throwing off.
Between location cone and packing element, be connected with the first umbrella, the second umbrella and the protective sleeve for the protection of packing element in turn.
The external surface of lower isolating ring is fixedly sleeved be useful on remove greasy dirt scrape wall cushion rubber.
The top of split-type pedestal is provided with ceramic card tile, and there are a plurality of zigzag protuberant bars that circumferentially arrange along location cone on the top of ceramic card tile.
The beneficial effects of the utility model are: by cable or coiled tubing, this pottery slips composite bridge plug is delivered to target zone position fast, carry out gunpowder or waterpower setting, realize packing payzone or non-target zone, reach change wellbore conditions, realize packing object, reach follow-up construction requirement.After having constructed, can realize quick milling, flowback effect, improve operating efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, ceramic slips composite bridge plug described in the utility model is described in further detail.
Fig. 1 is the assembling drawing of the ceramic slips composite bridge plug described in embodiment 1.
Fig. 2 is the use view of the ceramic slips composite bridge plug described in embodiment 1.
Fig. 3 is the enlarged diagram at ceramics pole position in Fig. 2.
Fig. 4 is the ceramic card tile schematic diagram described in embodiment 2.
1. central tubes wherein, 2. tension ring, 3. upper isolating ring, 4. split-type pedestal, 41. ceramic card tiles; 5. ceramics pole, 6. locates cone, 61. guide chutes, 7. the first umbrella, 8. the second umbrella; 9. protective sleeve, 10. packing element, 11. lower isolating rings, 12. scrape wall cushion rubber, 13. sleeve pipes.
The specific embodiment
Below in conjunction with accompanying drawing, ceramic slips composite bridge plug described in the utility model is elaborated.A kind of ceramic slips composite bridge plug, comprise central tube 1, from one end of central tube 1, to the other end central tube 1 of central tube 1, be arranged with successively upper isolating ring 3, location cone 6, packing element 10, location cone 6 and lower isolating ring 11, lower isolating ring 11 is fixedly connected with central tube 1, upper isolating ring 3, location cone 6 and packing element 10 all can moving axially along central tube 1, location cone 6 is taper, locate a plurality of split-type pedestals 4 that are circumferentially with of cone 6, split-type pedestal 4 can move along the generatrix direction of location cone 6, as shown in Figure 1.
The split-type pedestal 4 in left side is arranged between the location cone 6 in upper isolating ring 3 and left side, the split-type pedestal 4 on right side is arranged between the location cone 6 on lower isolating ring 11 and right side, in Fig. 1, the left end of the split-type pedestal 4 in left side contacts with upper isolating ring 3, the right-hand member of split-type pedestal 4 and the location cone 6 in left side in left side contact, the left end of the split-type pedestal 4 on right side contacts with the location cone 6 in left side, and the right-hand member of the split-type pedestal 4 on right side contacts with lower isolating ring 11.After upper isolating ring 3 moves from left to right in Fig. 1, the split-type pedestal 4 that can promote packing element 10 left and right sides moves along the generatrix direction of locating cone 6, and split-type pedestal 4 is opened, the stressed rear compression packing element 10 of location cone 6 of packing element 10 left and right sides, make the middle part of packing element 10 to outer process, simultaneously the split-type pedestal 4 in open configuration can fix with the inwall of the sleeve pipe 13 of down-hole, thereby realizes packing element 10 setting in sleeve pipe 13, as shown in Figure 2.
This pottery slips composite bridge plug easily bores milling, and the chip grinding off is gently little, more easily goes out, and can prevent bit freezing.Be specially adapted to the operations such as separate stratum fracfturing, acidifying, shutoff water of inclined shaft, horizontal well, overcome metal bridging plug and easily blocked, bore milling difficulty, bore the shortcomings such as milling time length consuming time.Wherein, after packing element 10 Expansion sealings, can reach isolation pit shaft liquid and pressure, packing payzone or non-target zone, reach change wellbore conditions, realize packing object.
The left side of this pottery slips composite bridge plug in Fig. 1, the bottom that is arranged on the location cone 6 between upper isolating ring 3 and packing element 10 towards packing element 10 tops towards upper isolating ring 3, generatrix direction for the ease of split-type pedestal 4 along location cone 6 moves, the surface of location cone 6 offers a plurality of guide chutes 61 that slide for split-type pedestal 4 along generatrix direction, the bottom of split-type pedestal 4 is plugged in guide chute 61, as shown in Figure 1, split-type pedestal 4 mobile displacement in guide chute 61 can be divided into one along the axial displacement of central tube 1 and one along central tube 1 displacement radially.
The top of split-type pedestal 4 is provided with a plurality of ceramics poles 5, and ceramics pole 5 is obliquely installed, and the top of ceramics pole 5 is towards packing element 10.Ceramics pole on split-type pedestal 4 in open configuration 5 can form tooth-shape structure after embedding sleeve pipe 13 inwalls like this, forms stable embedding fixed point on sleeve pipe 13 inwalls.Packing element 10 forms at both sides ceramics pole 5 deformation state that under the effect that embeds fixed point, maintenance is extruded, and maintains sealing effectiveness stable, as shown in Figure 3.
As this pottery slips composite bridge plug in Fig. 1 contains the two groups of split-type pedestals 4 in left and right, every group is comprised of circumferential equally distributed 8～12 the split-type pedestals 4 in location cone 6.On the top of each split-type pedestal 4, be inlaid with 4 ceramics poles 5.The cylinder edge, one end that ceramics pole 5 exposes split-type pedestal 4 is rounding, the size of fillet R is 3mm, and in view of the large feature of brittleness of ceramics, each split-type pedestal 4 is arranged four ceramics poles 5, simultaneously in conjunction with the fillet structure on ceramics pole 5, effective peptizaiton active force thereon.Ceramics pole 5 can embed in down-hole casing 13 inwalls, is unlikely to again because the contacting points position pressure of ceramics pole 5 and sleeve pipe 13 inwalls is excessive, and makes ceramics pole 5 squeezed broken, loses support effect.
For split-type pedestal 4 can not come off from the guide chute 61 of location cone 6, while not using, split-type pedestal 4 is connected by shear pin between cone 6 with location, and when upper isolating ring 3 promotion split-type pedestal 4, shear pin will be cut off.Or guide chute 61 is dovetail groove, the bottom of split-type pedestal 4 and this dovetail groove match, and rely on the shape of this dovetail groove sealed, and split-type pedestal 4 can be fixed on guide chute 61.
The right side of this pottery slips composite bridge plug in Fig. 1, the bottom that is arranged on the location cone 6 between lower isolating ring 11 and packing element 10 towards packing element 10 tops towards lower isolating ring 11, the surface of location cone 6 offers a plurality of guide chutes 61 that slide for split-type pedestal 4 along generatrix direction, and the bottom of split-type pedestal 4 is plugged in guide chute 61.Be arranged in the right positioner cone 6 of this pottery slips composite bridge plug of Fig. 1 identical with split-type pedestal 4 with the left positioner cone 6 that is positioned at this pottery slips composite bridge plug with the structure of split-type pedestal 4, act on also identically, no longer repeat.
Between one end of central tube 1 and upper isolating ring 3, be provided with the tension ring 2 for preventing that upper isolating ring 3 from throwing off.Tension ring 2 provides the fixing power of giving up, and is not compressed to settingly before internal surface of sleeve pipe at this bridging plug, and upper isolating ring 3 can not thrown off, and a compressive surpasses the power of giving up that tension ring 2 is set, and tension ring 3 could be pulled, and this bridging plug just can be realized and giving up.
Between location cone 6 and packing element 10, be connected with the first umbrella 7, the second umbrella 8 and the protective sleeve 9 for the protection of packing element 10 in turn.The distortion when extruding of the first umbrella 7 and the second umbrella 8, tightly encases the packing element 10 after protective sleeve 9 and distortion, plays pressure and protection packing element 10, the effect that packing element 10 can be sealed of bearing.Protective sleeve 9 is polytetrafluoroethylene (PTFE) materials, and protective sleeve 9 can protect packing element 10 by the umbrella of hard material, not scratched in stressed extruding, and plays pressure-bearing effect.
The external surface of lower isolating ring 11 is fixedly sleeved be useful on remove greasy dirt scrape wall cushion rubber 12, the external diameter of scraping wall cushion rubber 12 equals the internal diameter of sleeve pipe 13.In the process of going into the well, scrape wall cushion rubber 12 and can remove the sordid things such as greasy dirt on sleeve pipe 13 inwalls, facilitate the setting of this pottery slips composite bridge plug.
The using method of this pottery slips composite bridge plug is as follows:
This pottery slips composite bridge plug is connected with cable or coiled tubing by the fastening means of giving up, and puts into construction pit shaft.Firing cable car or Operation Tubing Aggregate are delivered to construction operation target zone position fast by it.In decentralization process, if use is that cable is delivered mode, need to controls certain speed simultaneously and pump into clear water, form the liquid stream of stablizing flow velocity in pit shaft, this flow chart of net horizontal section is even more important, and drives this pottery slips composite bridge plug to arrive object well section.Then carrying out gunpowder or water conservancy exerts pressure setting.Under the inside thrust forming in gunpowder or water conservancy, the pushing cylinder in fastening means passes to upper isolating ring parts 3 by thrust, and upper isolating ring 3 is subject to after thrust, along the axis direction of central tube 1, to packing element 10, moves.The split-type pedestal 4 that promotes packing element 10 left and right sides when mobile moves to packing element 10 simultaneously, under the restriction of the guide chute 61 of the location cone 6 that the split-type pedestal 4 of both sides matches in both sides and guiding, evenly opens.Thrust passes to and locates cone 6 simultaneously, and location, both sides cone 6 moves to the direction of packing element 10, by the first umbrella 7, the second umbrella 8, protective sleeve 9 and the middle packing element 10 of extruding both sides, and the stressed rear distortion of packing element 10, external diameter increases also distending laterally.After reaching certain deflection, packing element 10 is tightly attached on the inwall of down-hole casing 13, realizes the effect of seal pack packing element.Continue to increase thrust, both sides split-type pedestal 4 is pushed to the inwall of sleeve pipe 13 under the radial component of location cone 6 locating surfaces, and being embedded in split-type pedestal 4 ceramics pole 5 above can be under thrust in the inwall of embedding sleeve pipe 13 tightly.The tooth-shape structure that falls that ceramics pole 5 is embedded on split-type pedestal 4 forms stable embedding fixed point on internal surface of sleeve pipe.Packing element 10 forms under the effect that embeds fixed point and keeps being extruded deformation state at both sides ceramics pole 5, thereby maintains sealing effectiveness.Continue to increase thrust, the releasing device of giving up in fastening means is released, and this pottery slips composite bridge plug is thrown off with being lowered to instrument, completes the setting of whole ceramic slips composite bridge plug, as depicted in figs. 1 and 2.The distinguish that this pottery slips composite bridge plug can be realized in setting process ftractures and embeds internal surface of sleeve pipe, forms solid reliable setting effect.
Embodiment 2
The present embodiment is a kind of improvement to embodiment 1, its district is originally that the top of split-type pedestal 4 is provided with ceramic card tile 41, there is the zigzag protuberant bar circumferentially arranging along location cone 6 on the top of ceramic card tile 41, as shown in Figure 4, You San road, the top parallel projections bar of ceramic card tile 41, has formed laciniation on the top of porcelain slips sheet 41.
The benefit of design is like this: when the top of ceramic card tile 41 embeds sleeve pipe 13 inwall, form line with sleeve pipe 13 inwalls and contact, original some contact is become to line contact, increased stress point, fixed effect is better.Meanwhile, the crown on ceramic card tile 41 has fillet structure, and fully effectively the hard active force of peptizaiton on crown, makes the crown of ceramic card tile 41 be difficult for squeezed broken.
The above; be only specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or the equivalent variations of doing according to the utility model scope of patent protection and modification, all should still belong to the category that this patent is contained.
Claims (10)
1. a ceramic slips composite bridge plug, it is characterized in that, described ceramic slips composite bridge plug comprises central tube (1), from one end of central tube (1), to the other end central tube (1) of central tube (1), be arranged with successively upper isolating ring (3), location cone (6), packing element (10), location cone (6) and lower isolating ring (11), lower isolating ring (11) is fixedly connected with central tube (1), upper isolating ring (3), location cone (6) and packing element (10) all can moving axially along central tube (1), location cone (6) is taper, location cone (6) be circumferentially with a plurality of split-type pedestals (4), split-type pedestal (4) can move along the generatrix direction of location cone (6).
2. ceramic slips composite bridge plug according to claim 1, it is characterized in that: the bottom that is arranged on the location cone (6) between upper isolating ring (3) and packing element (10) towards packing element (10) top towards upper isolating ring (3), the surface of location cone (6) offers a plurality of guide chutes (61) that slide for split-type pedestal (4) along generatrix direction, and the bottom of split-type pedestal (4) is plugged in guide chute (61).
3. ceramic slips composite bridge plug according to claim 2, is characterized in that: the top of split-type pedestal (4) is provided with a plurality of ceramics poles (5), and ceramics pole (5) is obliquely installed, and the top of ceramics pole (5) is towards packing element (10).
4. ceramic slips composite bridge plug according to claim 3, is characterized in that: location cone (6) be circumferentially evenly distributed with 8～12 split-type pedestals (4), the top of each split-type pedestal (4) is provided with 4 ceramics poles (5).
5. ceramic slips composite bridge plug according to claim 2, it is characterized in that: between split-type pedestal (4) and location cone (6), by shear pin, be connected, or guide chute (61) is dovetail groove, bottom and this dovetail groove of split-type pedestal (4) match.
6. ceramic slips composite bridge plug according to claim 1, it is characterized in that: the bottom that is arranged on the location cone (6) between lower isolating ring (11) and packing element (10) towards packing element (10) top towards lower isolating ring (11), the surface of location cone (6) offers a plurality of guide chutes (61) that slide for split-type pedestal (4) along generatrix direction, and the bottom of split-type pedestal (4) is plugged in guide chute (61).
7. ceramic slips composite bridge plug according to claim 1, is characterized in that: between one end of central tube (1) and upper isolating ring (3), be provided with the tension ring (2) for preventing that upper isolating ring (3) from throwing off.
8. ceramic slips composite bridge plug according to claim 1, is characterized in that: between location cone (6) and packing element (10), be connected with the first umbrella (7), the second umbrella (8) and the protective sleeve (9) for the protection of packing element (10) in turn.
9. ceramic slips composite bridge plug according to claim 1, is characterized in that: the external surface of lower isolating ring (11) is fixedly sleeved be useful on remove greasy dirt scrape wall cushion rubber (12).
10. ceramic slips composite bridge plug according to claim 1, it is characterized in that: the top of split-type pedestal (4) is provided with ceramic card tile (41), there are a plurality of zigzag protuberant bars that circumferentially arrange along location cone (6) on the top of ceramic card tile (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473891.3U CN203441401U (en) | 2013-08-05 | 2013-08-05 | Ceramic slip composite bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473891.3U CN203441401U (en) | 2013-08-05 | 2013-08-05 | Ceramic slip composite bridge plug |
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| Publication Number | Publication Date |
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| CN203441401U true CN203441401U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320473891.3U Expired - Fee Related CN203441401U (en) | 2013-08-05 | 2013-08-05 | Ceramic slip composite bridge plug |
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| CN (1) | CN203441401U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470197A (en) * | 2013-08-05 | 2013-12-25 | 中国石油天然气股份有限公司 | Ceramic slip composite bridge plug |
| CN104196464A (en) * | 2014-08-27 | 2014-12-10 | 杰瑞能源服务有限公司 | Tubular column string and bridge plug setting and sand blasting perforation combining method |
| CN104989317A (en) * | 2015-06-16 | 2015-10-21 | 中国石油天然气股份有限公司 | Bridge plug for fracturing of casing pipe |
| CN108533218A (en) * | 2018-05-14 | 2018-09-14 | 中国石油集团西部钻探工程有限公司 | Scraping wall |
| CN114962441A (en) * | 2022-05-12 | 2022-08-30 | 中海油田服务股份有限公司 | Bearing assembly and drilling equipment |
-
2013
- 2013-08-05 CN CN201320473891.3U patent/CN203441401U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470197A (en) * | 2013-08-05 | 2013-12-25 | 中国石油天然气股份有限公司 | Ceramic slip composite bridge plug |
| CN104196464A (en) * | 2014-08-27 | 2014-12-10 | 杰瑞能源服务有限公司 | Tubular column string and bridge plug setting and sand blasting perforation combining method |
| CN104989317A (en) * | 2015-06-16 | 2015-10-21 | 中国石油天然气股份有限公司 | Bridge plug for fracturing of casing pipe |
| CN108533218A (en) * | 2018-05-14 | 2018-09-14 | 中国石油集团西部钻探工程有限公司 | Scraping wall |
| CN114962441A (en) * | 2022-05-12 | 2022-08-30 | 中海油田服务股份有限公司 | Bearing assembly and drilling equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20210805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |