CN201310346Y - Metal bellow for logging borehole instrument - Google Patents
Metal bellow for logging borehole instrument Download PDFInfo
- Publication number
- CN201310346Y CN201310346Y CNU2008202316136U CN200820231613U CN201310346Y CN 201310346 Y CN201310346 Y CN 201310346Y CN U2008202316136 U CNU2008202316136 U CN U2008202316136U CN 200820231613 U CN200820231613 U CN 200820231613U CN 201310346 Y CN201310346 Y CN 201310346Y
- Authority
- CN
- China
- Prior art keywords
- metal
- metal bellow
- logging
- borehole instrument
- instrument
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 29
- 239000003921 oil Substances 0.000 claims abstract description 9
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 6
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 241000283216 Phocidae Species 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000009545 invasion Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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- Diaphragms And Bellows (AREA)
Abstract
The utility model relates to a pressure-equalizing device of logging borehole instrument, in particular to a metal bellow for logging borehole instrument, comprising a metal bellow body, a seal root pot and a metal pipe. Oil chambers with threading holes are arranged in the metal bellow body and the metal pipe, and are filled with silicon oil or hydraulic oil. The metal bellow for logging borehole instrument of good extension function and anti-corrosion property can replace rubber pipes, keep intact while being folded again and again under temperature of 20 DEG C below zero and 250 DEG C above zero, and avoid corrosion and invasion by borehole harmful gas and other matters. Compared with rubber pipes, the metal bellow for logging borehole instrument is characterized by strong adaptability, easy maintenance and low fault rate.
Description
Technical field:
The utility model relates to well logging downhole instrument pressure equaliser, especially a kind of metal bellows of the downhole instrument that is used to log well.
Background technology:
In the oil well logging industry,, often realize by the mode of using bellows when going into the well instrument when the down-hole operation needs to adopt the pressure balance technology.Before going into the well; the technician will add the silicone oil or the hydraulic oil of appropriate amount in the bellows; downhole probe in well along with change in depth; corresponding variation also can take place in pressure in the well; therefore bellows will be flexible back and forth along with the variation of pressure; reach pressure balance, protection instrument and the purpose of measuring.
At present, nearly all bellows all adopts elastomeric material.Be characterized in: retractility is relatively good, technology is simple.Shortcoming is: the down-hole is not corrosion-resistant, high temperature high voltage resistant performance and ground resistance to low temperature are not strong, and fault rate is higher.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned shortcoming, and the metal bellows of a kind of downhole instrument that is used to log well that provides.This device can the down-hole be corrosion-resistant, high temperature resistant, high pressure having, and higher flexible ability, can play instrument pressure balance effect in the down-hole.
Technical scheme:
For achieving the above object, the utility model is finished in the following way, is made up of wavy metal tube body, sealed packing, metal tube; The oil pocket of one band through wires hole is arranged in described wavy metal tube body and the metal tube, be filled with silicone oil or hydraulic oil in the oil pocket.
The metal bellows that will be filled with an amount of hydraulic oil or silicone oil during work is installed on the logger of going into the well; as flexible pipe nipple instrument etc.; bellows can stretch back and forth along with the degree of depth and pressure change metal bellows when logger moves in the down-hole; thereby the realization pressure balance reaches the protection instrument and finishes the logging tasks purpose smoothly.
This device has under the cryogenic conditions, and promptly subzero cleaning below 20 ℃ does not damage when folding is moving repeatedly, hot conditions is that the above ultradeep well of 5000m can satisfy logging requirements, in addition, also have decay resistance preferably, can avoid the corrosion and the gas cut of toxic gas and other material in the well.
Description of drawings:
Accompanying drawing is the utility model structural representation.
Among the figure by 1, sealed packing, 2, the wavy metal tube body, 3, the through wires hole oil pocket, 4, metal tube forms.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing:
In the drawings, the two ends of this wavy metal tube body 2 are the metal tube 4 that has double containment packing 1 different-diameter, with metal tube main body 2 be a concentric overall structure, metal tube 4 and wavy metal tube body 2 endoporus are a through wires hole oil pocket 3, are filled with silicone oil or hydraulic oil in the endoporus oil pocket.
Claims (1)
1, a kind of metal bellows of the downhole instrument that is used to log well, form by wavy metal tube body (2), sealed packing (1), metal tube (4), it is characterized in that: a band through wires hole oil pocket (3) is arranged in described wavy metal tube body (2) and the metal tube (4), be filled with silicone oil or hydraulic oil in the oil pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202316136U CN201310346Y (en) | 2008-12-15 | 2008-12-15 | Metal bellow for logging borehole instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202316136U CN201310346Y (en) | 2008-12-15 | 2008-12-15 | Metal bellow for logging borehole instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310346Y true CN201310346Y (en) | 2009-09-16 |
Family
ID=41107601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202316136U Expired - Fee Related CN201310346Y (en) | 2008-12-15 | 2008-12-15 | Metal bellow for logging borehole instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310346Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927795A (en) * | 2017-05-22 | 2018-12-04 | 沈阳新松机器人自动化股份有限公司 | A kind of flexible driving mechanism arm and control system |
| CN110778309A (en) * | 2019-11-06 | 2020-02-11 | 何晓君 | Logging device of electron radiation generator based on X-ray |
| CN114458292A (en) * | 2022-01-25 | 2022-05-10 | 海南大学 | High-temperature deep well logging-while-drilling drill collar containing phase-change material and using method thereof |
-
2008
- 2008-12-15 CN CNU2008202316136U patent/CN201310346Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927795A (en) * | 2017-05-22 | 2018-12-04 | 沈阳新松机器人自动化股份有限公司 | A kind of flexible driving mechanism arm and control system |
| CN110778309A (en) * | 2019-11-06 | 2020-02-11 | 何晓君 | Logging device of electron radiation generator based on X-ray |
| CN114458292A (en) * | 2022-01-25 | 2022-05-10 | 海南大学 | High-temperature deep well logging-while-drilling drill collar containing phase-change material and using method thereof |
| CN114458292B (en) * | 2022-01-25 | 2023-05-02 | 海南大学 | High-temperature deep well logging-while-drilling drill collar containing phase-change material and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20131215 |