CN205558832U - Safe centralizer - Google Patents
Safe centralizer Download PDFInfo
- Publication number
- CN205558832U CN205558832U CN201620368056.7U CN201620368056U CN205558832U CN 205558832 U CN205558832 U CN 205558832U CN 201620368056 U CN201620368056 U CN 201620368056U CN 205558832 U CN205558832 U CN 205558832U
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- CN
- China
- Prior art keywords
- wiper block
- centralizer
- radial direction
- safe
- long
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Abstract
The utility model discloses a safe centralizer, improve the current relative diameter of centralizer when big in the pit the sticking of tool have a big risk, relative diameter hour does not reach the purpose that needs, there is the movable part, has falling object's risk, shortcoming such as short -lived. The utility model discloses a center tube, the top connection that links to each other with center tube one end, the lower clutch that links to each other with the center tube other end to and establish the body of rightting on the centrally positioned outside of tubes wall, right the body and right the piece including the radial length of establishing centrally positioned outside of tubes wall more than, the radial long exterior wall of piece of rightting is equipped with the wearing layer, right the piece when be one when radial length, should the be radial long both sides that right the piece form the runner between along, rightting the piece when radial length and being two when above, adjacent radial length is right and is formed the runner between the piece. The utility model discloses the latus rectum is little, greatly reduced sticking of tool risk, no movable part, no falling object risk, meet the eye on every side and right, right effectually, and expand the reaming in addition, repair the well, reduce advantage such as drilling tool whilring motion protection drilling tool.
Description
Technical field
This utility model belongs to oil, geological drilling field, is specifically related to a kind of safe centralizer.
Background technology
Centralizer is as one of anti-oblique, drop angle, the hold angle in a kind of oil, geological drilling, steady orientation, the down-hole equipment adjusting the function such as hole deviation and orientation, it is widely used in oil, geological drilling, the multiple bottom hole assemblies of formation supporting with other drilling tools, it is applied in the well type such as straight well, directional well, horizontal well, extended reach well, Multilateral Wells, high angle hole, is applied in the well section such as straight well section, orientation section, increasing hole angle section, drop angle section, hidden oblique section, horizontal segment.Current centralizer has spiral centering device, holds up centralizer, centralizer with replaceable sleeve, rolling wheel centralizer, diameter-changing centering guide etc..Compared with borehole diameter, when diameter is big, gap is little, and down-hole bit freezing risk is big；Diameter hour gap is big, does not reaches the purpose of needs.Centralizer with replaceable sleeve, rolling wheel centralizer, diameter-changing centering guide have movable part, have the risk of the thing that drops, the shortcoming such as have the life-span short.
Utility model content
The purpose of this utility model is to provide a kind of safe centralizer, improve existing centralizer relative diameter big time down-hole bit freezing risk big, relative diameter hour does not reaches the purpose of needs；There is movable part, have the risk of the thing that drops, the shortcomings such as the life-span is short.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of safe centralizer, including central canal, the top connection being connected with central canal one end, the lower contact being connected with the central canal other end, and is arranged at the centralizer body on central canal outer wall；Described centralizer body includes that one or more is arranged at the long wiper block of the radial direction of central canal outer wall；Described radial direction long wiper block appearance wall is provided with wearing layer；When radially long wiper block is one, between the both side edges of this long wiper block of radial direction, form runner；When radially long wiper block is more than two, between the long wiper block of adjacent radial direction, form runner.
Further, described radial direction long wiper block outer wall is additionally provided with cutting element.
Yet further, described wiper block also includes the short wiper block of radial direction being arranged at central canal outer wall；Described radial direction short wiper block outer wall is provided with wearing layer and/or cutting element；Runner is formed between the longest wiper block and radially short wiper block.
Further, the long wiper block of described radial direction has 1～10, and the shortest wiper block has 1～10, and the length of the short wiper block of described radial direction can be inconsistent.
Selecting as one, the long wiper block of described radial direction and/or radially short wiper block are the most discrete for multistage or polylith.
It addition, the radial thickness of the long wiper block of described radial direction is more than the radial thickness of the short wiper block of described radial direction.
Additionally, described wearing layer is overlay cladding, spray-welding coating, sinter layer, insert anti-wear component.
Specifically, described overlay cladding, spray-welding coating, sinter layer are the superhard materials such as diamond, hard alloy, pottery and their mixing.
Specifically, described cutting element is cylinder, disc, prismatic, wedge, taper, gear shape, top dome shape, arc top shape, platform shape, other shapes and the assembly of these shapes.
Specifically, described insert anti-wear component is cylinder, disc, prismatic, wedge, taper, gear shape, top dome shape, arc top shape, platform shape, other shapes and the assembly of these shapes.
Specifically, described cutting element and anti-wear component are man-made polycrystalline diamond (PDC) composite sheet, thermally-stabilised man-made polycrystalline diamond (TSP), cubic boron nitride (BN), carborundum (SiC), silicon nitride (Si3N4), aluminium oxide (Al2O3), zirconium oxide (ZrO2), other pottery.
Specifically, the tactical diameter of the long wiper block of described radial direction matches with bored borehole diameter.
Selecting as one, described cutting element and anti-wear component cover wiper block length on centralizer body is axial.
This utility model compared with prior art, has the following advantages and beneficial effect:
The radial direction long wiper block tactical diameter of the safe centralizer of this utility model matches with borehole diameter, reach to meet the eye on every side the effect of righting, be conducive to strengthening the centralizing function of safe centralizer, strengthen the effects such as the hold angle of bottom hole assemblies of its composition, drop angle, increasing hole angle, steady orientation, improve well track quality.The longest wiper block and the safe centralizer latus rectum that radially short wiper block is formed are much smaller than well latus rectum, reduce the bit freezing risk of safe centralizer.The longest wiper block and radially short wiper block are provided with wearing layer and cutting element, on the one hand can strengthen wearability, increase the safe centralizer life-span, on the other hand can cut and repair the borehole wall.Producing eccentric force in the longest wiper block and radially short wiper block turning course, under eccentric force effect, drilling tool trends towards doing revolution motion, reduces drilling tool whirling motion trend, can effectively protect drilling tool.The most this eccentric force also helps anti-oblique, drop angle.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is top view of the present utility model.
Wherein, the parts that in accompanying drawing, labelling is corresponding are entitled: 1-top connection, 2-central canal, 3-lower contact, 4-centralizer body, 5-radially long wiper block, 6-radially short wiper block, 7-runner, 8-wearing layer, 9-cutting element.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
As shown in Figure 1, 2, a kind of safe centralizer, including central canal 2, the top connection 1 being connected with central canal one end, the lower contact 3 being connected with the central canal other end, and the centralizer body 4 being arranged on central canal outer wall；Described centralizer body includes that one or more is arranged at the long wiper block of the radial direction of central canal outer wall 5；Described radial direction long wiper block appearance wall is provided with wearing layer 8；When radially long wiper block is one, between the both side edges of this long wiper block of radial direction, form runner 7；When radially long wiper block is more than two, between the long wiper block of adjacent radial direction, form runner.By arranging wearing layer, it is possible to effective enhancing wearability of the present utility model, increase the life-span of the present utility model.
And radial direction of the present utility model long wiper block tactical diameter matches with borehole diameter, reach to meet the eye on every side the effect of righting, be conducive to strengthening the centralizing function of safe centralizer, strengthen the effects such as the hold angle of bottom hole assemblies of its composition, drop angle, increasing hole angle, steady orientation, improve well track quality.
In order to cut the borehole wall and repair, described radial direction long wiper block outer wall is additionally provided with cutting element 9.
Specifically, described wiper block also includes the short wiper block of radial direction 6 being arranged at central canal outer wall；Described radial direction short wiper block outer wall is provided with wearing layer and/or cutting element；When only one of which radially long wiper block and radially short wiper block, between the long wiper block of described radial direction and radially short wiper block, form runner 7；When having the long wiper block of multiple radial direction and radially short wiper block, between the longest wiper block and radially long wiper block, the longest wiper block and the short wiper block of radial direction, the shortest wiper block and the short wiper block of radial direction, form runner 7.
The radial thickness of the long wiper block of described radial direction is more than the radial thickness of the short wiper block of described radial direction.By above-mentioned restriction so that the longest wiper block and the safe centralizer latus rectum that radially short wiper block is formed are much smaller than well latus rectum, reduce the bit freezing risk of safe centralizer.
It addition, produce eccentric force in the long wiper block of radial direction of the present utility model and radially short wiper block turning course, under eccentric force effect, drilling tool trends towards doing revolution motion, reduces drilling tool whirling motion trend, can effectively protect drilling tool.The most this eccentric force also helps anti-oblique, drop angle.
Specifically, the long wiper block of described radial direction has 1～10, and the shortest wiper block has 1～10, and when radially short wiper block is two or more, the radical length of the short wiper block of described radial direction can be inconsistent.
In order to adapt to the well under different situations, the long wiper block of described radial direction and/or radially short wiper block are the most discrete for multistage or polylith.
Specifically, described wearing layer is overlay cladding, spray-welding coating, sinter layer, insert anti-wear component.
Selecting as one, described cutting element and insert anti-wear component are cylinder, disc, prismatic, wedge, taper, gear shape, top dome shape, arc top shape, platform shape, other shapes and the assembly of these shapes.
Alternatively, described cutting element and anti-wear component cover wiper block length on centralizer body is axial.
What deserves to be explained is, this utility model latus rectum is little, greatly reduces bit freezing risk；No-movable part, without dropping thing risk；Meeting the eye on every side righting, righting is effective；And also expand reaming, finishing well, reduce the advantages such as drilling tool whirling motion protection drilling tool.
According to above-described embodiment, this utility model just can be realized well.What deserves to be explained is; on the premise of designing based on said structure; for solving same technical problem; even if some made on this utility model are without substantial change or polishing; the essence of the technical scheme used is still as this utility model, therefore it should also be as in protection domain of the present utility model.
Claims (10)
1. a safe centralizer, it is characterised in that include central canal (2), the top connection (1) being connected with central canal one end, the lower contact (3) being connected with the central canal other end, and the centralizer body (4) being arranged on central canal outer wall；Described centralizer body includes that one or more is arranged at the long wiper block of the radial direction of central canal outer wall (5)；Described radial direction long wiper block appearance wall is provided with wearing layer (8)；When radially long wiper block is one, between the both side edges of this long wiper block of radial direction, form runner (7)；When radially long wiper block is more than two, between the long wiper block of adjacent radial direction, form runner.
Safe centralizer the most according to claim 1, it is characterised in that described radial direction long wiper block outer wall is additionally provided with cutting element (9).
Safe centralizer the most according to claim 1 and 2, it is characterised in that described wiper block also includes the short wiper block of the radial direction (6) being arranged at central canal outer wall；Described radial direction short wiper block outer wall is provided with wearing layer and/or cutting element；Runner (7) is formed between the long wiper block of described radial direction and radially short wiper block.
Safe centralizer the most according to claim 3, it is characterised in that the long wiper block of described radial direction has 1～10, and the shortest wiper block has 1～10.
Safe centralizer the most according to claim 3, it is characterised in that the long wiper block of described radial direction and/or radially short wiper block are the most discrete for multistage or polylith.
Safe centralizer the most according to claim 3, it is characterised in that the radial thickness of the long wiper block of described radial direction is more than the radial thickness of the short wiper block of described radial direction.
Safe centralizer the most according to claim 3, it is characterised in that described wearing layer is overlay cladding, spray-welding coating, sinter layer, insert anti-wear component.
Safe centralizer the most according to claim 2, it is characterised in that described cutting element is cylinder, disc, prismatic, wedge, taper, gear shape, top dome shape, arc top shape, platform shape and the assembly of these shapes.
Safe centralizer the most according to claim 7, it is characterised in that described insert anti-wear component is cylinder, disc, prismatic, wedge, taper, gear shape, top dome shape, arc top shape, platform shape and the assembly of these shapes.
Safe centralizer the most according to claim 1, it is characterised in that the tactical diameter of the long wiper block of described radial direction matches with bored borehole diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620368056.7U CN205558832U (en) | 2016-04-27 | 2016-04-27 | Safe centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620368056.7U CN205558832U (en) | 2016-04-27 | 2016-04-27 | Safe centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205558832U true CN205558832U (en) | 2016-09-07 |
Family
ID=56807906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620368056.7U Expired - Fee Related CN205558832U (en) | 2016-04-27 | 2016-04-27 | Safe centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205558832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608006A (en) * | 2019-09-24 | 2019-12-24 | 重庆科技学院 | Well wall repairing type roller guide shoe |
-
2016
- 2016-04-27 CN CN201620368056.7U patent/CN205558832U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608006A (en) * | 2019-09-24 | 2019-12-24 | 重庆科技学院 | Well wall repairing type roller guide shoe |
| CN110608006B (en) * | 2019-09-24 | 2024-05-10 | 重庆科技学院 | Roller guide shoe for repairing well wall |
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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: 20160907 Termination date: 20180427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |