CN2675861Y - Balance piston type well measuring headstall - Google Patents
Balance piston type well measuring headstall Download PDFInfo
- Publication number
- CN2675861Y CN2675861Y CNU2004200302997U CN200420030299U CN2675861Y CN 2675861 Y CN2675861 Y CN 2675861Y CN U2004200302997 U CNU2004200302997 U CN U2004200302997U CN 200420030299 U CN200420030299 U CN 200420030299U CN 2675861 Y CN2675861 Y CN 2675861Y
- Authority
- CN
- China
- Prior art keywords
- headstall
- piston type
- piston
- measuring
- well
- 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
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a balance piston type well measuring headstall used for measuring a well, adopting the technology of pressure balance. The existing headstall structure which adopts a rubber canister to bind up and down and estersil to fill inwards is changed into the piston type pressure balance headstall structure, which improves the dirty, messy and poor situations in the assembly and maintenance operations of the well measuring headstall, realizes the civilization progress, and lightens the labor intensity of the worker. The utility model can be widely applied to well measuring operation of an oil field.
Description
Technical field:
The utility model relates to the dummy piston formula borehole log bridle that a kind of oil reservoir logging is used.
Background technology:
At present domestic widely used borehole log bridle adopts the upper and lower binding of rubber tube in pressure balance, in fill silicone grease structure.Have many shortcomings during this structure is used at the scene: the pressure balance mode of this structure is more original, backward, because of silicone grease is a kind of thick grease, various parts in packing element all in the parcel of silicone grease, can't be removed it totally during dismounting, and trouble is not only dirty but also random during the assembling maintenance.Another kind of head harness is the double-safety structure, owing to adopt the packing element formula to seal, after the chest-developing bar fracture, packing element can be split by card and pull open, and it is destroyed that mud enters the interior electric insulation of packing element, can't finish logging tasks.
The utility model content:
In order to overcome the problem that existing head harness structure exists, the utility model provides a kind of dummy piston formula borehole log bridle good through trial effect, it preferably resolves dirty, unrest, difference situation in the assembling maintenance that existing head harness exists, and still can finish the problem of this logging tasks after rupturing with the pulling force ring when chest-developing bar meets accident.
The technical scheme that its technical problem that solves the utility model adopts is: original open (being that inner core can enter mud) head harness cap is designed to a surge drum that all seals up and down, in surge drum, be provided with dummy piston, be provided with the compression spring in the outside of dummy piston, in be provided with the axis of the piston, and be provided with fuel feeding valve and overflow valve in the lower end, be provided with the pulling force ring at the surge drum core, be provided with chest-developing bar in the pulling force ring.Operation logic is, after instrument was gone into the well, temperature rising volume increased the oil in the chamber with the increase of well depth, and piston compression spring outwards moves; When on instrument, carrying, the volume-diminished of well temperature decline oil, piston moves inward under spring action, when head harness is carried 10mm on the axis of the piston when the down-hole chest-developing bar meets accident fracture suddenly, the pulling force ring is born main pulling force immediately, and this moment, piston moved inward filling space, and balance keep-ups pressure, and can continue to finish logging tasks, and head harness can be found to carry 10mm on the axis of the piston after going out well immediately, illustrates that chest-developing bar is disconnected, must change head harness.When normal unfreezing, when the moment of chest-developing bar, pulling force ring complete rupture, piston is pressed onto the bottom, and overflow valve is opened immediately, and mud enters in the surge drum, fills up the sky valve, and the balance that keep-ups pressure makes all parts of core can pull out the unfreezing task of finishing smoothly.
The utility model beneficial effect is: since with the piston-type pressure balancing technique be applied in make the head harness structure produce new variation in the borehole log bridle to have changed existing head harness structure original, backward state has solved dirty, unrest, difference situation in the head harness assembling maintenance and the problem that still can finish logging tasks after chest-developing bar ruptures, realized civilized well logging, changed workman's condition of labor, the logging quality height.
Description of drawings:
Accompanying drawing is the utility model overall structure schematic diagram.
Among the figure 1, the axis of the piston, 2, the compression spring, 3, dummy piston, 4, surge drum, 5, the pulling force ring, 6, chest-developing bar, 7, fuel feeding valve, 8, overflow valve.
The specific embodiment:
In the accompanying drawings, will compress spring 2, dummy piston 3 is enclosed within on the axis of the piston 1, then its integral body be drawn in the surge drum 4; Be provided with fuel feeding valve 7 and overflow valve 8 in the lower end of surge drum, they and cylindrical shell screwed connection, core is provided with chest-developing bar 6 in the lower end of surge drum, and it and the screwed connection of head harness bottom are provided with a pulling force ring 5 in its periphery.
Claims (1)
1, a kind of dummy piston formula is surveyed into head harness, it is characterized in that: will compress spring (2), dummy piston (3) is enclosed within on the axis of the piston (1), and then its integral body be drawn in the surge drum (4); Be provided with fuel feeding valve (7) and overflow valve (8) in the lower end of surge drum, they and cylindrical shell screwed connection are provided with chest-developing bar (6) at the lower end of surge drum core, and it and the screwed connection of head harness bottom are provided with a pulling force ring (5) in its periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200302997U CN2675861Y (en) | 2004-02-05 | 2004-02-05 | Balance piston type well measuring headstall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200302997U CN2675861Y (en) | 2004-02-05 | 2004-02-05 | Balance piston type well measuring headstall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2675861Y true CN2675861Y (en) | 2005-02-02 |
Family
ID=34483669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200302997U Expired - Fee Related CN2675861Y (en) | 2004-02-05 | 2004-02-05 | Balance piston type well measuring headstall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2675861Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729899A (en) * | 2018-05-09 | 2018-11-02 | 刘刚 | Multi-functional borehole log bridle |
| CN109185263A (en) * | 2018-10-18 | 2019-01-11 | 中国海洋石油集团有限公司 | A kind of underground band hydraulic system and its dummy piston |
| CN111561308A (en) * | 2019-02-13 | 2020-08-21 | 中石化石油工程技术服务有限公司 | Double-tension horse tap |
-
2004
- 2004-02-05 CN CNU2004200302997U patent/CN2675861Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729899A (en) * | 2018-05-09 | 2018-11-02 | 刘刚 | Multi-functional borehole log bridle |
| CN108729899B (en) * | 2018-05-09 | 2021-11-23 | 刘刚 | Multifunctional logging bridle |
| CN109185263A (en) * | 2018-10-18 | 2019-01-11 | 中国海洋石油集团有限公司 | A kind of underground band hydraulic system and its dummy piston |
| CN111561308A (en) * | 2019-02-13 | 2020-08-21 | 中石化石油工程技术服务有限公司 | Double-tension horse tap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |