CN88203346U - Locator for connecting hoop - Google Patents
Locator for connecting hoop Download PDFInfo
- Publication number
- CN88203346U CN88203346U CN198888203346U CN88203346U CN88203346U CN 88203346 U CN88203346 U CN 88203346U CN 198888203346 U CN198888203346 U CN 198888203346U CN 88203346 U CN88203346 U CN 88203346U CN 88203346 U CN88203346 U CN 88203346U
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- CN
- China
- Prior art keywords
- utility
- model
- coil
- magnet steel
- locator
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- Expired - Lifetime
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Abstract
The utility model discloses a locator for connecting hoop which is used for bathymetric measure of an oil spring. On the base of the original technology, a magnetic conducting passageway is changed, and an invention part of the utility model is mainly composed of a magnetic isolating ring and a convex coil rack. The amplitude value of the direct output signal is 30mV to 50 mV, and the depth value is determined accurately on earth surface. The utility model has the advantages of reasonable structure, convenient maintenance, high reliability and low cost and belongs to an indispensable instrument for measuring the depth value in deep layer and segment of an oil spring at present.
Description
The utility model relates to a kind of oil well collar locator that numerical value uses that fathoms, and it not only can measure the depth value of whale, and can use with the pumpingh well annulus logging complete sets of Techniques of present broad development.Directly the output signal amplitude reaches 30～50 millivolts, and ground shows clear, and is accurately reliable, is applicable to that 4000 meters are accurately measured the interval degree of depth with interior oil well.
The utility model is to provide a kind of improved collar locator on the basis of existing magnetic logger (referring to the chief editor's of grand celebration well logging company " production logging technology ").
The central module bobbin of the utility model collar locator is designed to the boss structure shape by original " I " shape architecture advances, the magnetism-isolating loop that does not have in original technology is loaded on the two ends up and down of bobbin, magnetism-isolating loop material selection brass of the present utility model also can be selected other NULL for use.In addition, also can according to sealing and with the requirement of other logging instrument joint test, should be at the upper end design and installation water-stop plug of a side magnet steel upwards.While can also be at the lower end of coil design and installation pressure cap and packing ring in order to guarantee the connection reliability of bobbin, magnet steel.Therefore, the utility model just is made up of cable head, magnet steel, coil, bobbin, single-core plug, water-stop plug, pressure cap, packing ring, shell.In the instrument lower going-into-well, when well bore moves up downwards, because the magnetic resistance at box cupling place is unequal with the magnetic resistance of oil, sleeve pipe, thereby make the instrument magnetic line of force also change by coil thereupon, the induced electromotive force that produces at the coil two ends is also along with changing, send signal by cable transmission to ground, note through recorder, so just reached test purpose.The utility model is easy to use, can with the Other Instruments coupling, also can singly use, when wanting the embodiment of detail narration below adopting, almost less than increase, cost descends part greatly.
Below with reference to accompanying drawing the utility model being made further detail describes.
Fig. 1 is the longitudinal sectional drawing of a kind of concrete structure of the utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Fig. 3 is test curve figure of the present utility model.
Accompanying drawing number of the present utility model is: cable head (1), magnet steel (2), coil (3), bobbin (4), single-core plug (5), magnetism-isolating loop (6), water-stop plug (7), pressure cap (8), packing ring (9), shell (10), cable (11).
With reference to Fig. 1, on structure, bobbin (4) is improved, the boss shape is processed in the centre, simultaneously, increase installation magnetism-isolating loop (6) at the two ends of coil (3), with reduce or avoid as far as possible the magnetic line of force from the end of magnet steel (2) with regard to short circuit, make the magnetic line of force get back to another utmost point from the centre through coil (3).The assembling installation process is: at first magnet steel (2), magnetism-isolating loop (6), coil (3), bobbin (4), coil (3), magnetism-isolating loop (6), magnet steel (2), packing ring (9), pressure cap (8) being linked in sequence is assembled in the shell (10), and its top magnet steel (2) locates to connect water-stop plug (7), cable head (1) then; Its underpart pressure cap (8) end connects single-core plug (5), promptly constitute independent use concrete structure figure of the present utility model, when uniting use with other logger, only need the cable head (1) at two ends up and down and single-core plug (5) is pulled down and Other Instruments links together gets final product.When using, by cable head (1) end stube cable (11), be transported to the well site with the logger car and be lowered in the oil well, measure the oil well depth data.By test, for obviously being distinguished, oil, casing coupling come, and the designer also has consciousness ground that the surface recorder chart drive speed is accelerated, so that can correctly discern except adopting structure design of the present utility model.Fig. 2 is circuit principle structure figure of the present utility model.
Referring to Fig. 3, as can be seen, during collar locator process sleeve pipe, recording curve presents two positive negative peaks, and present four positive negative peaks when the tubing coupling, the reason of its main distinction is to be that (the utility model refers to from oil external surface by tubing coupling, the sleeve pipe annular space is lowered to the test case of instrument), box cupling length is 130 millimeters, by casing coupling then is inner surface, its gap length is about 25～30 millimeters, so magnetic field strengthens during by tubing coupling, and casing coupling is when passing through, because the increase of air-gap reluctance, magnetic field intensity weakens, and therefore the curve data of noting from surface recorder can clearly be distinguished oil, casing coupling accurately provides the interval depth dimensions reliably.
Claims (4)
1, a kind of collar locator of being made up of cable head (1), magnet steel (2), coil (3), bobbin (4), single-core plug (5), shell (10) is characterized in that:
Between a, magnet steel (2) and the coil (3) design and installation magnetism-isolating loop (6);
Be provided with boss in the middle of b, the bobbin (4).
2, collar locator according to claim 1 is characterized in that the upper end of magnet steel (2) is equipped with water-stop plug (7).
3, collar locator according to claim 1 and 2 is characterized in that the lower end design and installation of coil (3) has pressure cap (8).
4,, it is characterized in that design and installation has packing ring (9) between coil (3) and the pressure cap (8) according to claim 1 or 3 described collar locators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198888203346U CN88203346U (en) | 1988-02-13 | 1988-02-13 | Locator for connecting hoop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198888203346U CN88203346U (en) | 1988-02-13 | 1988-02-13 | Locator for connecting hoop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88203346U true CN88203346U (en) | 1988-10-19 |
Family
ID=4838182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198888203346U Expired - Lifetime CN88203346U (en) | 1988-02-13 | 1988-02-13 | Locator for connecting hoop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88203346U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899954A (en) * | 2010-08-17 | 2010-12-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Depth positioner of well-entry tool and positioning method |
| CN103867183A (en) * | 2012-12-18 | 2014-06-18 | 中国石油化工股份有限公司 | Transient electromagnetic method through casing water exploration tester |
| CN103987919A (en) * | 2011-12-21 | 2014-08-13 | 韦尔泰克有限公司 | Downhole mapping system |
| CN109252822A (en) * | 2018-11-12 | 2019-01-22 | 中国石油集团渤海钻探工程有限公司 | Coiled tubing casing collar locator (CCL) |
-
1988
- 1988-02-13 CN CN198888203346U patent/CN88203346U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899954A (en) * | 2010-08-17 | 2010-12-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Depth positioner of well-entry tool and positioning method |
| CN101899954B (en) * | 2010-08-17 | 2013-04-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Depth positioner of well-entry tool and positioning method |
| CN103987919A (en) * | 2011-12-21 | 2014-08-13 | 韦尔泰克有限公司 | Downhole mapping system |
| CN103867183A (en) * | 2012-12-18 | 2014-06-18 | 中国石油化工股份有限公司 | Transient electromagnetic method through casing water exploration tester |
| CN109252822A (en) * | 2018-11-12 | 2019-01-22 | 中国石油集团渤海钻探工程有限公司 | Coiled tubing casing collar locator (CCL) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |