CN102268987A - Gyro centralizer for retest of freezing hole - Google Patents
Gyro centralizer for retest of freezing hole Download PDFInfo
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- CN102268987A CN102268987A CN2011102280215A CN201110228021A CN102268987A CN 102268987 A CN102268987 A CN 102268987A CN 2011102280215 A CN2011102280215 A CN 2011102280215A CN 201110228021 A CN201110228021 A CN 201110228021A CN 102268987 A CN102268987 A CN 102268987A
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- spring
- freezing
- centralizer
- freezing hole
- gyro
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Abstract
The invention relates to a centralizer of a gyro inclinometer for retest of a freezing hole, and the centralizer is particularly suitable for being applied to the shaft sinking construction using a freezing method. The gyro inclinometer is fixed in a connecting pipe; an upper joint pipe and a lower joint pipe are fixed at the both ends of the connecting pipe, respectively; the upper joint pipe and the lower joint pipe are respectively sleeved on upper and lower coaxial devices which are structured the same; the upper coaxial device includes upper and lower spring seats, a spring piece and a spring; the upper and lower spring seats are sleeved on the upper joint pipe and can slide relative to each other; and the spring piece and the spring are fixed on the upper and lower spring seats, respectively. The centralizer disclosed by the invention is simple in structure, convenient in use, and capable of ensuring measurement precision of a freezing tube.
Description
Technical field
The present invention relates to a kind of centralizer of freezing hole repetition measurement gyrolevel, be particularly suitable for using in the freeze-wellboring construction.
Background technology
Freezing hole construction is the working procedure in early stage that freezes Refrigeration Engineering, and the height of freezing hole construction quality directly has influence on the workmanship and the construction cost of the follow-up construction of freezing to freeze.So during freezing hole construction, according to code requirement once every the necessary deviational survey of 20m-30m, with the verticality of assurance freezing hole and the pitch of holes between the freezing hole.Therefore when freezing hole all construct finish after, need be in freezing pipe once more the verticality to freezing hole measure.Because when frozen construction, the specification of freezing pipe is different, particularly carries out the pit shaft of partial freezing, an one frigo just has the freezing pipe of two to three kinds of specifications.So just be difficult to guarantee the axiality of gyrolevel and freezing pipe.The effect of centralizer is the axiality that guarantees gyro and freezing pipe in freezing pipe, guarantees that gyroscopic survey numerical value can react a kind of instrument of the deflection numerical value of freezing hole really.
Partial freezing's technology mainly is a change freezing pipe diameter, when upper wellbore is non-freeze section, when the bottom is freeze section, the freezing pipe caliber of bottom just than top to freeze caliber big.Therefore when carrying out the freezing hole repetition measurement, because the diameter of bottom freezing pipe is bigger than top freezing pipe diameter, be difficult to guarantee the axiality of gyrolevel and freezing pipe during the freezing hole repetition measurement, cause the repetition measurement error of bottom freezing pipe bigger than normal, cause slanting of freezing hole can not well instruct the follow-up construction of freezing to freeze.
Summary of the invention
In order to overcome the shortcoming of prior art, the invention provides a kind of freezing hole repetition measurement gyro centralizer, it is simple in structure, and is easy to use, can guarantee the certainty of measurement of freezing pipe.
The present invention solves the technical scheme that its technical problem takes: fixing gyrolevel in the tube connector, upper and lower adapter is fixed at the two ends of tube connector respectively, the upper and lower coaxial device of empty respectively cover in the upper and lower adapter, upper and lower coaxial device structure is identical, the described coaxial device of going up comprises upper and lower spring abutment, spring leaf and spring, upper and lower spring abutment sky is enclosed within on the described upper connecting tube, can slide difference stationary spring and spring on the upper and lower spring abutment relatively.
Described spring leaf is 3-6.
1., simple in structure, easy to use the present invention has following advantage:.2., can change the support external diameter of spring leaf according to the freezing pipe diameter at any time, contact with the tight of freezing pipe, can guarantee the certainty of measurement of freezing pipe.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Accompanying drawing is an assembling drawing of the present invention.
The specific embodiment
As shown in Figure 1, tube connector 5 interior fixedly gyrolevels 6, the two ends of tube connector 5 are respectively by the fixing upper and lower adapter 12,3 of screw thread, the upper and lower coaxial device 8,4 of empty respectively cover in the upper and lower adapter 12,3, upper and lower coaxial device 8,4 structures are identical, and the described coaxial device 8 of going up comprises upper and lower spring abutment 11,7, spring leaf 10 and spring 9, and upper and lower spring abutment 11,7 skies are enclosed within on the described upper connecting tube 12, can slide difference stationary spring 10 and spring 9 on the upper and lower spring abutment 11,7 relatively.
Described spring leaf 10 is 3-6.
The lower end of described lower linking tube 3 is damper 2 fixedly.
During use, it is fixing that gyrolevel is put into outer tube, makes gyrolevel and outer tube maintenance axiality, only need guarantee during measurement that the axiality of outer tube and freezing pipe can accurately measure the deflection of freezing pipe.
Claims (3)
1. freezing hole repetition measurement gyro centralizer, the interior fixedly gyrolevel (6) of tube connector (5), on the two ends of tube connector (5) are fixing respectively, lower linking tube (12,3), it is characterized in that: on, lower linking tube (12,3) on respectively sky put, following coaxial device (8,4), on, following coaxial device (8,4) structure is identical, the described coaxial device (8) of going up comprises, following spring abutment (11,7), spring leaf (10) and spring (9), on, following spring abutment (11,7) sky is enclosed within on the described upper connecting tube (12), on, following spring abutment (11,7) go up stationary spring (10) and spring (9) respectively.
2. freezing hole repetition measurement gyro centralizer according to claim 1 is characterized in that: described spring leaf (10) is 3-6.
3. freezing hole repetition measurement gyro centralizer according to claim 1, it is characterized in that: the lower end of described lower linking tube (3) is damper (2) fixedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102280215A CN102268987A (en) | 2011-08-10 | 2011-08-10 | Gyro centralizer for retest of freezing hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102280215A CN102268987A (en) | 2011-08-10 | 2011-08-10 | Gyro centralizer for retest of freezing hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102268987A true CN102268987A (en) | 2011-12-07 |
Family
ID=45051412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102280215A Pending CN102268987A (en) | 2011-08-10 | 2011-08-10 | Gyro centralizer for retest of freezing hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102268987A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3999381A (en) * | 1975-04-17 | 1976-12-28 | The United States Of America As Represented By The Secretary Of The Army | Position control of jet pipe in missile attitude control system |
| DE3808803C1 (en) * | 1988-03-16 | 1991-08-22 | Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De | Hand-held weapon system, e.g. bazooka - uses computer to control position of barrel |
| CN2634110Y (en) * | 2003-07-04 | 2004-08-18 | 渤海石油工程公司 | Oriented perforating device |
| CN1730896A (en) * | 2005-08-26 | 2006-02-08 | 中国石化集团胜利石油管理局钻井工艺研究院 | A kind of strapdown type stable platform apparatus |
| CN2818759Y (en) * | 2005-08-26 | 2006-09-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Stabilized linked platform apparatus |
| CN201517417U (en) * | 2009-10-13 | 2010-06-30 | 北京宝恩通科技有限公司 | Centralizer for wireless drilling inclinometer |
-
2011
- 2011-08-10 CN CN2011102280215A patent/CN102268987A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3999381A (en) * | 1975-04-17 | 1976-12-28 | The United States Of America As Represented By The Secretary Of The Army | Position control of jet pipe in missile attitude control system |
| DE3808803C1 (en) * | 1988-03-16 | 1991-08-22 | Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De | Hand-held weapon system, e.g. bazooka - uses computer to control position of barrel |
| CN2634110Y (en) * | 2003-07-04 | 2004-08-18 | 渤海石油工程公司 | Oriented perforating device |
| CN1730896A (en) * | 2005-08-26 | 2006-02-08 | 中国石化集团胜利石油管理局钻井工艺研究院 | A kind of strapdown type stable platform apparatus |
| CN2818759Y (en) * | 2005-08-26 | 2006-09-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Stabilized linked platform apparatus |
| CN201517417U (en) * | 2009-10-13 | 2010-06-30 | 北京宝恩通科技有限公司 | Centralizer for wireless drilling inclinometer |
Non-Patent Citations (1)
| Title |
|---|
| 朱德武: "国外新型钻井工具技术进展", 《中外能源》, no. 4, 30 April 2011 (2011-04-30), pages 41 - 46 * |
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Application publication date: 20111207 |