CN102359350A - Centering device - Google Patents
Centering device Download PDFInfo
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- CN102359350A CN102359350A CN201110301389XA CN201110301389A CN102359350A CN 102359350 A CN102359350 A CN 102359350A CN 201110301389X A CN201110301389X A CN 201110301389XA CN 201110301389 A CN201110301389 A CN 201110301389A CN 102359350 A CN102359350 A CN 102359350A
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- matrix
- bearing
- external surface
- base body
- centralizer
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Abstract
The invention discloses a centering device overcoming the defect of larger clamping rate when the centering device in the prior art needs stopping at a certain depth under a well for a longer time. In the centering, an inner clamping ring (2) is arranged inside a base body (1) through a groove, two sides of the base body (1) are respectively provided with a spherical rotating head (3), a pressure cover (4) arranged on the outer surface of the base body (1) is used for stably arranging a bearing (6) inside the base body (1); the axial line of the bearing (6) is vertical to the axial line of the base body (1), a connecting rod (7) is arranged in an inner ring, the part of the connecting rod (7), extending out of the bearing (6), is provided with a rolling pin (8), and the rotating head (3) is arranged on the rolling pin (8). The embodiment of the invention realizes that the sliding friction of an apparatus and the well wall is converted into the rolling friction of the centering device and the well wall, thus the resistance force is greatly reduced, and the risk of clamping the apparatus is greatly reduced.
Description
Technical field
The present invention relates to a kind of field produces and use device, relate in particular to a kind of centralizer.
Background technology
For improving logging quality, reduce the probability that card is met in the down-hole, logger often need be installed centralizer when going into the well.Centralizer commonly used at present is rubber centralizer, four arms/six arm centralizers or the like; These centralizers have certain effect to the normal conventional logger; But need stop the instrument of long period (such as more than 2 hours) for similar formation testing in certain degree of depth; The effect of these centralizers is just not ideal, and instrument is met card in the down-hole probability can become higher.
On the other hand, for inclined shaft or horizontal well, use instrument resistance when transferring of traditional centralizer very big, need special device to shift instrument onto appointed positions often, this has increased considerably the difficulty and the risk of underground work.
Summary of the invention
Technical problem to be solved by this invention is to overcome centralizer of the prior art when the appliance requires long period rests on certain degree of depth of down-hole, to meet the bigger defective of card probability.
In order to solve the problems of the technologies described above, the invention provides a kind of centralizer, matrix (1) is inner to be provided with interior snap ring (2) through groove, and this matrix (1) both sides respectively are provided with the swivel head (3) of a spherical shape; The gland (4) that is arranged on matrix (1) external surface is with the stable inside that is arranged on matrix (1) of bearing (6); The axis normal of this bearing (6) is equipped with connecting rod (7) in the axis of this matrix (1) in the inner ring; This connecting rod (7) stretches out volume pin (8) is installed on the part of this bearing (6), and this swivel head (3) is installed in this volume and sells on (8).
Preferably, outside of snap ring (2) is circular in this, and inside is hexagon.
Preferably, this matrix (1) is connected through first screw (9) with interior snap ring (2).
Preferably, this gland (4) is installed on this lug boss (11) through second screw (10).
Preferably, two these swivel heads (3) that are positioned at this matrix (1) both sides be oppositely arranged and sphere outwardly.
Preferably, the external surface of this matrix (1) includes lug boss (11), and this bearing (6) is positioned at this lug boss (11) inside, and this gland (4) is installed in the external surface of this lug boss (11) through second screw (10).
Preferably, a part or whole part of this gland (4) is embedded in the external surface of this lug boss (11).
Preferably, the external surface of this swivel head (3) is provided with first groove (31) of strip.
Preferably, the external surface of matrix (1) is provided with second groove (12) of strip.
Preferably, have the gap between snap ring (2) and this matrix (1) in this and can rotate relatively.
Compared with prior art, embodiments of the invention can solve under the abominable hole condition and to meet card and problem such as to transfer.Embodiments of the invention can radially rotate freely along axially reaching of instrument.When instrument rests in the well or in inclined shaft, move; Centralizer can rotate to swivel head axis direction level automatically; Contact thereby can rotate to automatically with the borehole wall; Realize the sliding friction of the instrument and the borehole wall is converted into the rolling friction of the centralizer and the borehole wall, reduced resistance significantly, greatly reduced the risk that instrument is met card.
Other features and advantages of the present invention will be set forth in manual subsequently, and, partly from manual, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in manual, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide the further understanding to technical scheme of the present invention, and constitutes the part of manual, is used to explain technical scheme of the present invention with embodiments of the invention, does not constitute the restriction to technical scheme of the present invention.
Fig. 1 is the profile sketch map of the embodiment of the invention.
Fig. 2 be in the embodiment of the invention swivel head up and down towards the time vertical view.
Fig. 3 be in the embodiment of the invention about swivel head towards the time elevation.
Fig. 4 is the R-R sectional view of vertical view shown in Figure 2.
Fig. 5 is the A-A sectional view of vertical view shown in Figure 2.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer, hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
Fig. 1 is the profile sketch map of the embodiment of the invention; Fig. 2 be in the embodiment of the invention swivel head up and down towards the time vertical view; Fig. 3 be in the embodiment of the invention about swivel head towards the time elevation, Fig. 4 is the R-R sectional view of vertical view shown in Figure 2, Fig. 5 is the A-A sectional view of vertical view shown in Figure 2.
Like Fig. 1 and shown in Figure 4, matrix 1 inside comprises outside for circular interior is hexagonal interior snap ring 2, can be set with instrument 5 in the inside of interior snap ring 2.Wherein matrix 1 is provided with groove, and interior snap ring 2 places this groove, and matrix 1 is connected through first screw 9 with interior snap ring 2.
As shown in Figure 1, the end face 21 at the two ends of matrix 1 is the plane, and 3, two swivel heads 3 of swivel head that both sides respectively are provided with a spherical shape are oppositely arranged on the both sides of matrix 1, and sphere outwardly.
Embodiments of the invention are stablized the inside that are arranged on matrix 1 through the gland 4 that is arranged on matrix 1 external surface with bearing 6.As shown in Figure 5, matrix 1 external surface central part comprises lug boss 11, and lug boss 11 set inside have bearing 6, and gland 4 is installed on the lug boss 11 through second screw 10 and is arranged in the lug boss 11 so that bearing 6 is stablized.The axis normal of bearing 6 is in the axis of matrix 1, and a part or whole part of gland 4 is embedded in the external surface of lug boss 11 of matrix 1.Connecting rod 7 is installed in the inner ring of bearing 6, and connecting rod 7 stretches out volume pin 8 is installed on the part of bearing 6, and swivel head 3 is installed on the volume pin 8.Have the gap between interior snap ring 2 and the matrix 1 and can rotate relatively.
As shown in Figure 2, the external surface of swivel head 3 is provided with first groove 31 of strip, can reduce the contact area of the swivel head 3 and the borehole wall, thereby can reduce the borehole wall to revolving the resistance of spindle nose 3.Like Fig. 3 and shown in Figure 4, the external surface of matrix 1 is provided with second groove 12 of strip, can alleviate the whole weight of centralizer.
Embodiments of the invention are applied in the downhole instrument, can solve under the abominable hole condition to meet card and problem such as to transfer.Embodiments of the invention can radially rotate freely along axially reaching of instrument, and rotation radially realizes that through swivel head axial rotation is to realize through the gap between interior snap ring 2 and the matrix 1.When instrument rests in the well or in inclined shaft, move; Receive the influence of gravity, centralizer can rotate to swivel head axis direction level automatically, contacts thereby can rotate to automatically with the borehole wall; Realized the sliding friction of the instrument and the borehole wall is converted into the rolling friction of the centralizer and the borehole wall; Reduce resistance (test data shows that reduction is more than 60%) significantly, greatly reduced the risk that instrument is met card, simplified the work flow of instrument in inclined shaft (horizontal well).
Though the embodiment that the present invention disclosed as above, the embodiment that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technician under any the present invention in the technical field; Under the prerequisite of spirit that does not break away from the present invention and disclosed and scope; Can do any modification and variation what implement in form and on the details; But scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.
Claims (10)
1. a centralizer is characterized in that, matrix (1) is inner to be provided with interior snap ring (2) through groove, and this matrix (1) both sides respectively are provided with the swivel head (3) of a spherical shape; The gland (4) that is arranged on matrix (1) external surface is with the stable inside that is arranged on matrix (1) of bearing (6); The axis normal of this bearing (6) is equipped with connecting rod (7) in the axis of this matrix (1) in the inner ring; This connecting rod (7) stretches out volume pin (8) is installed on the part of this bearing (6), and this swivel head (3) is installed in this volume and sells on (8).
2. centralizer according to claim 1 is characterized in that:
The outside of snap ring (2) is circular in being somebody's turn to do, and inside is hexagon.
3. centralizer according to claim 1 is characterized in that:
This matrix (1) is connected through first screw (9) with interior snap ring (2).
4. centralizer according to claim 1 is characterized in that:
This gland (4) is installed on this lug boss (11) through second screw (10).
5. centralizer according to claim 1 is characterized in that:
Two these swivel heads (3) that are positioned at this matrix (1) both sides be oppositely arranged and sphere outwardly.
6. centralizer according to claim 1 is characterized in that:
The external surface of this matrix (1) includes lug boss (11), and this bearing (6) is positioned at this lug boss (11) inside, and this gland (4) is installed in the external surface of this lug boss (11) through second screw (10).
7. centralizer according to claim 6 is characterized in that:
A part or whole part of this gland (4) is embedded in the external surface of this lug boss (11).
8. centralizer according to claim 1 is characterized in that:
The external surface of this swivel head (3) is provided with first groove (31) of strip.
9. centralizer according to claim 1 is characterized in that:
The external surface of matrix (1) is provided with second groove (12) of strip.
10. centralizer according to claim 1 is characterized in that:
Should in have the gap between snap ring (2) and this matrix (1) and can rotate relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110301389 CN102359350B (en) | 2011-10-09 | 2011-10-09 | Centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110301389 CN102359350B (en) | 2011-10-09 | 2011-10-09 | Centering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102359350A true CN102359350A (en) | 2012-02-22 |
| CN102359350B CN102359350B (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110301389 Active CN102359350B (en) | 2011-10-09 | 2011-10-09 | Centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102359350B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234647A (en) * | 2014-07-16 | 2014-12-24 | 大庆福斯特科技开发有限公司 | Underground opening self-locking casing centering device |
| CN104919130A (en) * | 2012-11-06 | 2015-09-16 | 开拓工程股份有限公司 | Centralizer for downhole probes |
| WO2017141047A1 (en) * | 2016-02-19 | 2017-08-24 | Sedcotech-Uds-I Limited | Wheel securing system and method of use |
| CN117888834A (en) * | 2024-03-18 | 2024-04-16 | 吉林省大多天盛金属陶瓷技术有限公司 | Oil rod anti-corrosion centralizer with side arm body adjusting function and method |
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| US4011907A (en) * | 1975-12-19 | 1977-03-15 | Halliburton Company | Knockdown centralizer |
| CN1055979A (en) * | 1991-06-26 | 1991-11-06 | 石油大学 | Diameter-regulating centralizing device |
| US20050098353A1 (en) * | 2003-11-07 | 2005-05-12 | Halliburton Energy Services, Inc. | Variable gauge drilling apparatus and method of assembly thereof |
| CN2700543Y (en) * | 2004-04-08 | 2005-05-18 | 芦成山 | Rotary sucker rod coupling sleeve centralizer |
| US20080164018A1 (en) * | 2004-08-12 | 2008-07-10 | Wireline Engineering Limited | Downhole Device |
| US20090003974A1 (en) * | 2007-06-29 | 2009-01-01 | Graeme Mcnay | Transport assembly |
| CN201246114Y (en) * | 2008-09-11 | 2009-05-27 | 大港油田集团有限责任公司 | Anti-friction and twist well drilling collar |
| CN201705333U (en) * | 2010-06-04 | 2011-01-12 | 中国海洋石油总公司 | Special centralizer for highly-deviated well |
-
2011
- 2011-10-09 CN CN 201110301389 patent/CN102359350B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011907A (en) * | 1975-12-19 | 1977-03-15 | Halliburton Company | Knockdown centralizer |
| CN1055979A (en) * | 1991-06-26 | 1991-11-06 | 石油大学 | Diameter-regulating centralizing device |
| US20050098353A1 (en) * | 2003-11-07 | 2005-05-12 | Halliburton Energy Services, Inc. | Variable gauge drilling apparatus and method of assembly thereof |
| CN2700543Y (en) * | 2004-04-08 | 2005-05-18 | 芦成山 | Rotary sucker rod coupling sleeve centralizer |
| US20080164018A1 (en) * | 2004-08-12 | 2008-07-10 | Wireline Engineering Limited | Downhole Device |
| US20090003974A1 (en) * | 2007-06-29 | 2009-01-01 | Graeme Mcnay | Transport assembly |
| CN201246114Y (en) * | 2008-09-11 | 2009-05-27 | 大港油田集团有限责任公司 | Anti-friction and twist well drilling collar |
| CN201705333U (en) * | 2010-06-04 | 2011-01-12 | 中国海洋石油总公司 | Special centralizer for highly-deviated well |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10494879B2 (en) | 2012-11-06 | 2019-12-03 | Evolution Engineering Inc. | Universal downhole probe system |
| US10648247B2 (en) | 2012-11-06 | 2020-05-12 | Evolution Engineering Inc. | Centralizer for downhole probes |
| US9523246B2 (en) | 2012-11-06 | 2016-12-20 | Evolution Engineering Inc. | Centralizer for downhole probes |
| US11795769B2 (en) | 2012-11-06 | 2023-10-24 | Evolution Engineering Inc. | Centralizer for downhole probes |
| US10871041B2 (en) | 2012-11-06 | 2020-12-22 | Evolution Engineering Inc. | Centralizer for downhole probes |
| US9850722B2 (en) | 2012-11-06 | 2017-12-26 | Evolution Engineering Inc. | Universal downhole probe system |
| CN104919130A (en) * | 2012-11-06 | 2015-09-16 | 开拓工程股份有限公司 | Centralizer for downhole probes |
| US10167683B2 (en) | 2012-11-06 | 2019-01-01 | Evolution Engineering Inc. | Centralizer for downhole probes |
| CN104919130B (en) * | 2012-11-06 | 2018-01-26 | 开拓工程股份有限公司 | The centralizer of underground probe |
| US10006257B2 (en) | 2012-11-06 | 2018-06-26 | Evolution Engineering Inc. | Centralizer for downhole probes |
| CN104234647A (en) * | 2014-07-16 | 2014-12-24 | 大庆福斯特科技开发有限公司 | Underground opening self-locking casing centering device |
| CN104234647B (en) * | 2014-07-16 | 2017-02-08 | 大庆福斯特科技开发有限公司 | Underground opening self-locking casing centering device |
| WO2017141047A1 (en) * | 2016-02-19 | 2017-08-24 | Sedcotech-Uds-I Limited | Wheel securing system and method of use |
| CN117888834A (en) * | 2024-03-18 | 2024-04-16 | 吉林省大多天盛金属陶瓷技术有限公司 | Oil rod anti-corrosion centralizer with side arm body adjusting function and method |
| CN117888834B (en) * | 2024-03-18 | 2024-05-10 | 吉林省大多天盛金属陶瓷技术有限公司 | Oil rod anti-corrosion centralizer with side arm body adjusting function and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102359350B (en) | 2013-09-18 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
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| CP01 | Change in the name or title of a patent holder |