CN201802322U - Intelligent shock absorber for logging instrument - Google Patents
Intelligent shock absorber for logging instrument Download PDFInfo
- Publication number
- CN201802322U CN201802322U CN2009200096210U CN200920009621U CN201802322U CN 201802322 U CN201802322 U CN 201802322U CN 2009200096210 U CN2009200096210 U CN 2009200096210U CN 200920009621 U CN200920009621 U CN 200920009621U CN 201802322 U CN201802322 U CN 201802322U
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- piston
- oil cylinder
- instrument
- damping device
- pressure sensor
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Abstract
The utility model relates to an intelligent shock absorber. An oil cylinder is mounted at the bottom end of a casing; a piston and a spring are placed inside the oil cylinder; and shock-absorbing rubber is mounted at the bottom of the piston. A pressure sensor is mounted at the top end of the oil cylinder; and ultrasonic ranging probes are mounted at the bottom ends of the instrument casing and a piston rod and can be used for measuring whether the distance between the shock absorber and the bottom hole is close to the dangerous distance or not; the pressure sensor can be used for informing whether personnel on the ground and the instrument have impact and restore the normal state or not; and during impact, the shock-absorbing rubber elastically deforms to push the piston to upwardly move to extrude liquid and gas in the oil cylinder to compress the spring, thereby effectively prolonging the impact time, reducing the impact force and playing a role of obviously absorbing shock. After the shock absorber leaves from the ground, the piston can restore the state before impact under the elasticity action of the spring, and prepare for next action.
Description
Technical field the utility model relates to a kind of oil well logging instrument, particularly relates to a kind of oil well logging instrument that is used for the logger damping.
Background technology is when logging operation or instrument fishing, instrument collides known or unknown obstruction sometimes in the process of transferring, for example, instrument and shaft bottom are bumped because cable length stretches and the depth survey difference causes instrument can't accurately stop to transfer near the shaft bottom time.Particularly combination well detecting Instrument is more and more in recent years, and weight is big, and length is long, and sensor is many, and structure is accurate more.In the present oil well logging instrument, most of rubber sleeve of installing in the bottom is as beam, have in addition do not have a shock-damping structure.The damping effect of rubber sleeve is very limited, causes instrument to break down through regular meeting when bumping, and brings unnecessary loss to logging operation.
Summary of the invention the utility model is installed on the lowermost end of logger string, its purpose is to improving existing rubber absorbers, provide a kind of and can detect obstruction position in shaft bottom or the well, reduce logging instrument collision impact power, damping effect is obvious, the intelligent damping device that can notify ground staff's instrument to be about to or to have bumped simultaneously.
For realizing the purpose of this utility model, damper comprises shell, spring, oil cylinder, piston, screw, nut, yielding rubber, supporting sleeve, seal gasket, supersonic sounding probe, pressure sensor, collection and telecommunication circuit, power supply and screw thread, it is characterized in that:
Oil cylinder is positioned at the damper lower end, enclosure, and Open Side Down, and the piston upper end is positioned at oil cylinder inside, and the lower end piston rod links to each other with yielding rubber by screw thread.Spring is between oil cylinder and piston.Supporting sleeve is between piston and yielding rubber.Screw is fixed in outer casing underpart by screw thread, and tip of screw passes oil cylinder inner wall.The supersonic sounding probe lays respectively at tool housing bottom and piston rod bottom.Pressure sensor is positioned at the oil cylinder top, links to each other with nut by screw thread.Seal gasket is between nut and tool housing.It is inner that collection and telecommunication circuit and power supply are positioned at the instrument upper end, and screw thread is positioned at instrument topmost.
Described supporting sleeve and piston have aperture separately, and liquid is flow through.
The direction of measurement of described ultrasonic probe and pressure sensor is all downward.
Gather with telecommunication circuit and can gather the echo amplitude of ultrasonic probe and then, the number that sends to the logger string by data/address bus passes pipe nipple or ground, can receive the order of ground or number biography pipe nipple simultaneously.
During this intelligent damping device operate as normal, down-hole liquids such as mud permeate to oil cylinder by the aperture on supporting sleeve and the piston, and the echo amplitude that receives behind the supersonic sounding probe emission sound wave is less, then bigger, the force value of pressure sensor is also less, can assert that instrument does not bump.Near the shaft bottom time, the amplitude of the echo that receives of supersonic sounding probe increases, and then reduces, when amplitude surpasses the certain amplitude value, or during then less than certain value, send alert data, notice terrestrial operation personnel instrument is about to bump, and need in time take measures.
If in time do not take measures, following situation takes place when causing instrument to bump:
1. yielding rubber contacts with ground, and stressed generation elastic deformation has reduced collision impact power;
2. daming piston is subjected to the yielding rubber resistance, and upwards the compression shock absorption spring further reduces collision impact power;
3. be penetrated into the liquid of oil cylinder and in-oil cylinder residue well liquid owing to be subjected to the piston extruding, can outwards get rid of,, prolonged the time of discharge, make piston time that moves upward elongated because the aperture is less by the aperture on piston and the supporting sleeve;
4. the force value of pressure sensor increases, and notice terrestrial operation personnel instrument bumps.
By said process, prolonged the collision stop time, reduced collision impact power, play tangible cushioning effect, thereby reduced the probability that Other Instruments is damaged when colliding.
After the collision, when carrying on instrument begins, spring can recover original length gradually, moves downward thereby promote piston, makes damper recover collision preceding state takes place, and carries out damping for contingent collision next time and prepares.Simultaneously, pressure sensing force value reduces, and notifies ground staff's instrument built on stilts, and after instrument left the shaft bottom certain distance, the echo that the supersonic sounding probe receives reduced, and when less than certain value, notifies ground staff's instrument to arrive safety depth.
In sum, the utility model can be surveyed bottom hole spacing, and prior notice ground staff's instrument is about to bump, and can measure the size of impact force when bumping, and effectively reduces collision impact power, reduces instrument owing to the probability that collides the damage that takes place.
Description of drawings Fig. 1 is the semi-section view of the embodiment of this intelligent damping device, and Fig. 2 is the A-A view of Fig. 1.
The specific embodiment is with reference to accompanying drawing, and screw thread 8 is equipped with on shell 1 top, links to each other with other logger.In the middle of the shell 1 is baffle arrangement, and oil cylinder 3 upper ends contact with baffle plate.Oil cylinder 3 is a through hole with the axle center of shell 1, and pressure sensor 12 upper ends are helicitic texture, pass the through hole of oil cylinder 3 and shell 1 after, closely fixing with nut 11, play fixed oil cylinder 3 and part sealing function.Between nut 11 and shell 1, be seal gasket 2.Piston 4 is positioned at oil cylinder 3 inside, and piston rod 6 is connected with yielding rubber 7 by screw thread, and supporting sleeve 16 plays the effect of supporting yielding rubber 7 when bumping between yielding rubber 7 and piston 4.Spring 13 is positioned at oil cylinder 3 inside, piston 4 upper ends.Helicitic texture is arranged at screw 14 tops, can be fixed on tool housing 1 bottom, and oil cylinder 3 inwalls are passed in its bottom, and ledge can stop piston 4 to skid off oil cylinder 3.Ultrasonic probe 5 and ultrasonic probe 15 are positioned at the bottom of tool housing 1, are that the axis of symmetry symmetry is installed with shell 1 axle center, and ultrasonic probe 17 is positioned at the bottom of piston rod 6.
Claims (7)
1. intelligent damping device, it is characterized in that: oil cylinder (3) is positioned at damper shell (1) interior lower end, Open Side Down, piston (4) upper end is positioned at oil cylinder (3) inside, lower end piston rod (6) links to each other with yielding rubber (7) by screw thread, spring (13) is positioned between oil cylinder (3) and the piston (4), supporting sleeve (16) is positioned between piston (4) and the yielding rubber (7), screw (14) is fixed in shell (1) bottom by screw thread, supersonic sounding probe (5,15,17) lay respectively at tool housing (1) bottom and piston rod (6) bottom, pressure sensor (12) is positioned at oil cylinder (3) top, link to each other with nut (11) by screw thread, seal gasket (2) is positioned between nut (11) and the tool housing (1), gathers with telecommunication circuit (9) and power supply (10) to be positioned at inside, instrument upper end, and screw thread (8) is positioned at instrument topmost.
2. according to the described intelligent damping device of claim 1, it is characterized in that piston (4) and supporting sleeve (16) all have aperture.
3. according to the described intelligent damping device of claim 1, the direction of measurement that it is characterized in that ultrasonic probe (5,15,17) is towards the instrument below.
4. according to the described intelligent damping device of claim 1, it is characterized in that the installation successively from bottom to top of yielding rubber (7), piston (4) and spring (13).
5. according to the described intelligent damping device of claim 1, it is characterized in that screw (14) end passes oil cylinder (3) inwall.
6. according to the described intelligent damping device of claim 1, the direction of measurement that it is characterized in that pressure sensor (12) is towards the instrument below.
7. according to the described intelligent damping device of claim 1, it is characterized in that instrument oil cylinder (3) and shell (1) upper end seal by seal gasket (2), pressure sensor (12) and nut (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200096210U CN201802322U (en) | 2009-02-13 | 2009-02-13 | Intelligent shock absorber for logging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200096210U CN201802322U (en) | 2009-02-13 | 2009-02-13 | Intelligent shock absorber for logging instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802322U true CN201802322U (en) | 2011-04-20 |
Family
ID=43871827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200096210U Expired - Lifetime CN201802322U (en) | 2009-02-13 | 2009-02-13 | Intelligent shock absorber for logging instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802322U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238260A (en) * | 2018-10-30 | 2019-01-18 | 贵州新联爆破工程集团有限公司 | A kind of improved RTK bar |
| CN114414125A (en) * | 2021-12-13 | 2022-04-29 | 岚图汽车科技有限公司 | Device and method for testing thermal runaway jet pressure of battery cell and related equipment |
| CN116877633A (en) * | 2023-09-06 | 2023-10-13 | 东营市创元石油机械制造有限公司 | Damping device of measurement while drilling instrument based on hydraulic buffering |
-
2009
- 2009-02-13 CN CN2009200096210U patent/CN201802322U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238260A (en) * | 2018-10-30 | 2019-01-18 | 贵州新联爆破工程集团有限公司 | A kind of improved RTK bar |
| CN114414125A (en) * | 2021-12-13 | 2022-04-29 | 岚图汽车科技有限公司 | Device and method for testing thermal runaway jet pressure of battery cell and related equipment |
| CN116877633A (en) * | 2023-09-06 | 2023-10-13 | 东营市创元石油机械制造有限公司 | Damping device of measurement while drilling instrument based on hydraulic buffering |
| CN116877633B (en) * | 2023-09-06 | 2023-11-14 | 东营市创元石油机械制造有限公司 | Damping device of measurement while drilling instrument based on hydraulic buffering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |