CN201068793Y - Large wellbore magnetic positioning logging tool - Google Patents
Large wellbore magnetic positioning logging tool Download PDFInfo
- Publication number
- CN201068793Y CN201068793Y CNU2007200325329U CN200720032532U CN201068793Y CN 201068793 Y CN201068793 Y CN 201068793Y CN U2007200325329 U CNU2007200325329 U CN U2007200325329U CN 200720032532 U CN200720032532 U CN 200720032532U CN 201068793 Y CN201068793 Y CN 201068793Y
- Authority
- CN
- China
- Prior art keywords
- backup
- main shaft
- arm
- diameter
- push arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a magnetic position logging instrument with a big borehole, which comprises an upper tie-in, a main shaft, a push arm and a lower tie-in; wherein, the main shaft is arranged between the upper tie-in and the lower tie-in; the main shaft is provided with a sleeve which is provided with a sliding sleeve, a push coil spring, a thrust force adjusting threaded sleeve and a thrust diameter size adjusting threaded sleeve. the push arm forms a lantern shape by four arcuate plate springs, one end of the push arm is articulated with the upper tie-in, and the other end of the push arm is articulated with the sliding sleeve; one end of the push coil spring touches against the sliding sleeve, and the other end thereof is connected with the thrust force adjusting threaded sleeve. The thrust diameter size adjusting threaded sleeve is connected with the lower tie-in in a screw thread way. The utility model adopts a push arm structure combining the arcuate plate springs and the coil spring, in addition, the thrust diameter and the thrust force thereof can be adjusted separately, thereby meeting the measuring requirements of various large diameter collars. The utility model has the advantages of novel design, reasonable structure, convenient use, stable performance, and high measuring accuracy.
Description
Technical field
The utility model relates to a kind of downhole testing instrument, particularly relates to the big hole magnetic positioning logging tool that a kind of major diameter cover tube coupling hoop is measured.
Background technology
Usually adopt small diameter detecting well device at present in the oil reservoir logging process, it mainly measures oil well casing below 5 inches, it constitutes by being provided with the measurement coil in the measuring tube, and during measurement, the induced electromotive force that produces in oil well casing by the measurement coil changes the length of measuring oil well casing.But this small diameter detecting well device is for the large diameter oil well casing more than 7 inches, and it measures the electromotive force variation that coil is difficult to the induction oil well casing, therefore, is not suitable for and measures large diameter oil well casing.
The utility model content
The utility model provides a kind of big hole magnetic positioning logging tool, is used for the measurement of the major diameter cover tube coupling hoop more than 7 inches.
Technical solution of the present utility model is: a kind of big hole magnetic positioning logging tool, comprise top connection, main shaft, backup arm and lower contact, be provided with main shaft between top connection and the lower contact, be provided with the measurement coil with the backup arm correspondence position in the main shaft, backup arm is provided with magnet steel, main shaft is provided with slidable cannula, sleeve pipe is provided with slip cap, the backup helical spring, backup power adjusts swivel nut and the backup diameter is adjusted swivel nut, backup arm constitutes the lantern shape by 4 arc leaf springs, backup arm one end and top connection are hinged, the backup arm other end is hinged on the slip cap, backup helical spring one end withstands on the slip cap, the other end connects backup power and adjusts swivel nut, and the backup diameter is adjusted swivel nut and is threaded with lower contact.
The utility model adopts the backup arm structure of arc leaf spring and helical spring combination, and its backup diameter and the big I of backup power regulate respectively, thereby can satisfy the measurement requirement of various major diameters cover tube coupling hoops.The utility model modern design, rational in infrastructure has easy to use, stable performance, advantage that certainty of measurement is high.
Description of drawings
Accompanying drawing is the utility model structural representation.
The specific embodiment
A kind of magnetic positioning logging tool, comprise top connection 1, main shaft 2, backup arm 3 and lower contact 11, top connection 1 is provided with threaded collar with lower contact 11 two ends and is connected with other measuring apparatus, be provided with main shaft 2 between top connection 1 and the lower contact 11, be provided with measurement coil 5 with backup arm 3 correspondence positions in the main shaft 2, backup arm 3 is provided with magnet steel 4, main shaft 2 is provided with slidable cannula 7, sleeve pipe 7 is provided with slip cap 6, backup helical spring 8, backup power adjusts swivel nut 9 and the backup diameter is adjusted swivel nut 10, backup arm 3 constitutes the lantern shape by 4 arc leaf springs, backup arm 3 one ends and top connection 1 are hinged, backup arm 3 other ends are hinged on the slip cap 6, backup helical spring 8 one ends withstand on the slip cap 6, the other end connects backup power and adjusts swivel nut 9, backup power is adjusted swivel nut 9 and is threaded with the whole swivel nut 10 of backup diameter key, and the backup diameter is adjusted swivel nut 10 and is threaded with lower contact 11.
The utility model can adapt to the casing diameter wide range of measurement, at the size of measuring sleeve pipe, the rotary pushing diameter is adjusted swivel nut 10 in advance, the backup diameter is adjusted swivel nut 10 and is moved with respect to lower contact 11 around main shaft 2 rotations, and sleeve pipe 7 slip drive slip caps 6 move adjusts backup arm 3 diameters; The backup power size of 3 pairs of down-hole casing walls of backup arm also can be adjusted the precompression that swivel nut 9 is adjusted backup helical spring 8 by adjusting backup power.The backup arm 3 maximum diameters of measuring that the utility model is finally adjusted always are greater than actual cased well diameter, so that backup helical spring 8 is passed to backup arm 3 to backup power by backup arm slip cap 6, make backup arm 3 tightly abut on the casing wall and move.Backup arm 3 is after the down-hole is subjected to radial compression applied that casing wall gives, the axial non-displacement of its upper end edge takes place, the lower end is hinged on the slip cap 6 and slip cap 6 is done linear slide together vertically, compresses backup helical spring 8 simultaneously and obtains the backup power that the compression spring gives.This motion takes place in instrument well logging process repeatedly, thereby has guaranteed that backup arm 3 can tightly abut in the requirement of moving on the casing wall.
Operating principle of the present utility model is: instrument is provided with four backup arms 3, magnet steel 4 on each backup arm 3 produces one group of magnetic field with casing wall, the measurement coil 5 in the instrument is passed in these four groups of magnetic fields respectively, have greatly changed in cover magnetic field, tube coupling hoop place, cause measuring coil 5 and produce an induced electromotive force, measure the coil 5 output signals of telecommunication through amplification detection circuit output.Therefore instrument whenever measures this induced electromotive force, just shows that instrument has passed through sleeve pipe one and bound round successively, thereby can measure the oil well casing degree of depth.
Claims (1)
1. big hole magnetic positioning logging tool, comprise top connection (1), main shaft (2), backup arm (3) and lower contact (11), be provided with main shaft (2) between top connection (1) and the lower contact, be provided with measurement coil (5) with backup arm (3) correspondence position in the main shaft (2), backup arm (3) is provided with magnet steel (4), it is characterized in that: main shaft (2) is provided with slidable cannula (7), sleeve pipe (7) is provided with slip cap (6), backup helical spring (8), backup power adjusts swivel nut (9) and the backup diameter is adjusted swivel nut (10), backup arm (3) constitutes the lantern shape by 4 arc leaf springs, backup arm (3) one ends and top connection (1) are hinged, backup arm (3) other end is hinged on the slip cap (6), backup helical spring (8) one ends withstand on the slip cap (6), the other end connects backup power and adjusts swivel nut (9), and the backup diameter is adjusted swivel nut (10) and is threaded with lower contact (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200325329U CN201068793Y (en) | 2007-08-16 | 2007-08-16 | Large wellbore magnetic positioning logging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200325329U CN201068793Y (en) | 2007-08-16 | 2007-08-16 | Large wellbore magnetic positioning logging tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201068793Y true CN201068793Y (en) | 2008-06-04 |
Family
ID=39490173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200325329U Expired - Fee Related CN201068793Y (en) | 2007-08-16 | 2007-08-16 | Large wellbore magnetic positioning logging tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201068793Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094629A (en) * | 2010-12-02 | 2011-06-15 | 中国石油大学(北京) | Holder of ferromagnetic memory sensor for logging instruments |
| CN102359372A (en) * | 2011-11-11 | 2012-02-22 | 郑州宜源翔石油科技有限公司 | Horizontal sidewall contact device |
| CN102562032A (en) * | 2010-12-27 | 2012-07-11 | 中国石油天然气股份有限公司 | Fire-flooding downhole high-temperature and high-pressure tester |
| CN113464118A (en) * | 2021-08-10 | 2021-10-01 | 中海油田服务股份有限公司 | Down-thrust sidewall contact device and method for acoustic logging instrument |
-
2007
- 2007-08-16 CN CNU2007200325329U patent/CN201068793Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094629A (en) * | 2010-12-02 | 2011-06-15 | 中国石油大学(北京) | Holder of ferromagnetic memory sensor for logging instruments |
| CN102562032A (en) * | 2010-12-27 | 2012-07-11 | 中国石油天然气股份有限公司 | Fire-flooding downhole high-temperature and high-pressure tester |
| CN102359372A (en) * | 2011-11-11 | 2012-02-22 | 郑州宜源翔石油科技有限公司 | Horizontal sidewall contact device |
| CN102359372B (en) * | 2011-11-11 | 2013-11-13 | 郑州宜源翔石油科技有限公司 | Horizontal sidewall contact device |
| CN113464118A (en) * | 2021-08-10 | 2021-10-01 | 中海油田服务股份有限公司 | Down-thrust sidewall contact device and method for acoustic logging instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENHUA PETROLEUM STOCK CO., LTD. Free format text: FORMER OWNER: XI AN WEISHENG ELECTRON EQUIPMENT CO., LTD. Effective date: 20090904 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090904 Address after: 158, Fuxing Avenue, Fuxing gate, Beijing, Xicheng District: 100037 Patentee after: CHINA ZHENHUA OIL CO., LTD. Address before: No. five, 20, science and technology zone, Xi'an hi tech Zone, Shaanxi, China: 710065 Patentee before: Xi'an Well-sun Electronic Instrument Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20100816 |