CN104879119A - Device for preventing downhole probe from getting stuck - Google Patents
Device for preventing downhole probe from getting stuck Download PDFInfo
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- CN104879119A CN104879119A CN201510159027.XA CN201510159027A CN104879119A CN 104879119 A CN104879119 A CN 104879119A CN 201510159027 A CN201510159027 A CN 201510159027A CN 104879119 A CN104879119 A CN 104879119A
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- way valve
- fixed block
- lower house
- upper shell
- probe
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Abstract
The invention relates to the technical field of well logging and provides a device for preventing a downhole probe from getting stuck. The device is characterized in that a pressure relief device is disposed in the middle of a high-pressure oilway, and a safety pin is cut off when the axial force during hydraulic probe lifting reaches a certain value; a one-way valve is disposed in the device, an oilway is communicated during normal operation and normal liquid flowing is unaffected, the internal oilway of the probe can be timely cut off during an emergency, overflowing of a large amount of hydraulic oil inside the hydraulic probe can be effectively avoided, and backward flowing of downhole liquid is prevented effectively.
Description
Technical field
The present invention relates to logging technique field, be specifically related to a kind of underground probe antiseize device.
Background technology
At present, telescoping ram is applied in more and more logger, and the control mode of common sidewall contact device of logging device can be divided into two kinds, and one is mechanical backup, another kind of leans on for hydraulic thrust; Mechanical pusher many employings motor drives screw mandrel drivening rod mechanism to realize a receipts of telescoping ram, and in hydraulic sidewall contact device many employings hydraulic circuit, the freely-movable of pressure oil driven plunger realizes a receipts of telescoping ram; The critical component such as hydraulic pump, hydraulic valve is related in hydraulic sidewall contact device, this base part is compared with screw mandrel, reliability and stability there is deficiency more, but in the backup power of telescoping ram, the backup power of hydraulic sidewall contact device is adjustable, and how non-adjustable the backup power of mechanical pusher is, so, in the design of underground pushing device, hydraulic sidewall contact device occupies an important position; This just requires that this instrument is safe and reliable in underground work, if broken down at underground hydraulic pressure oil circuit, cannot regain and occur card well phenomenon after telescoping ram opens, this situation for a whole set of downhole instrument is very disadvantageous, therefore, in hydraulic circuit, arrange antiseize device to be very important.
Summary of the invention
Object of the present invention is exactly to overcome above-mentioned the deficiencies in the prior art part, and a kind of underground probe antiseize device is provided, under telescoping ram is in pressure, again can not pressure release, when hydraulic transmission can not work in down-hole, pin can be cut off and start antiseize device, make pressure drop in system, telescoping ram draws in, thus makes instrument loosen further, mention ground, effectively avoid the loss occurring in well logging that card well phenomenon is brought.
The object of the invention is to be achieved by the following technical measures: a kind of underground probe antiseize device, comprise for hydraulic pressure pop one's head in upper shell that upper end is connected, for popping one's head in lower house, fixed block, the one way valve protective device that lower end is connected with hydraulic pressure, described upper shell, lower house, fixed block connect together, described fixed block and upper shell pass through screw fastening, described upper shell and lower house are fixed by safety pin, described upper shell lower end is provided with steady pin, is provided with the stopper slot for limiting steady pin shift position with the lower house of steady pin corresponding section; Described fixed block axle center place and lower house axle center place form path jointly provides hydraulic pressure to pop one's head in mesohigh oil circuit, one way valve protective device is set in high-pressure oil passage, described one way valve protective device is made up of one way valve push rod, steel ball, one-way valve seat, described one-way valve seat is fixed by fixed block, one way valve push rod is fixed by lower house, arrange a steel ball between described one-way valve seat and one way valve push rod, described fixed block is provided with the step of restriction steel ball shift position; Described fixed block and lower house junction are provided with the sealing ring for sealing high-pressure oil passage junction.
In technique scheme, described upper shell is connected by multiple screw with fixed block, forms a fixed body.
In technique scheme, described upper shell is connected by screw pin with steady pin.
In technique scheme, described stopper slot is oval groove, and before not connecting safety pin, lower house can be relative up and down with steady pin.
In technique scheme, described fixed block and one-way valve seat are threaded connection, and one-way valve seat are processed with some for crossing oily aperture.
In technique scheme, described lower house and one way valve push rod are threaded connection, and one way valve push rod are processed with some for crossing oily aperture.
The invention provides a kind of underground probe antiseize device, rely in the middle of high-pressure oil passage and pressure relief device is set, hydraulic pressure probe when axial force when carrying reaches certain value cut off safety pin, one way valve is provided with in the present invention, during normal work, oil circuit is in connected state does not affect liquid proper flow, when being in an emergency, can cut off probe internal oil passages in time, effectively avoid the inner a large amount of hydraulic oil of hydraulic pressure probe to overflow, effectively prevent pouring in down a chimney of down-hole well liquid.
Accompanying drawing explanation
The accompanying drawing forming the application is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is the first working state figure of underground probe antiseize device of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is underground probe antiseize device the second working state figure of the present invention.
Fig. 4 is the top view of Fig. 3.
Wherein: 1. upper shell, 2. fixed block, 3. safety pin, 4. steady pin, 5. lower house, 6. one way valve push rod, 7. steel ball, 8. one-way valve seat, 9. screw, 10. screw pin, 11. sealing rings.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Embodiments provide a kind of underground probe antiseize device, whole device profile is cylindrical shape, comprise: for popping one's head in the upper shell 1 that upper end is connected with hydraulic pressure, for popping one's head in the lower house 5 that lower end is connected with hydraulic pressure, fixed block 2, one way valve protective device, described upper shell 1, lower house 5, fixed block 2 connects together, described fixed block 2 is fastening by screw 9 with upper shell 1, described upper shell 1 is fixed by safety pin 3 with lower house 5, described upper shell 1 lower end is provided with steady pin 4, the stopper slot for limiting steady pin shift position is provided with the lower house 5 of steady pin 4 corresponding section, described fixed block 2 axle center place and lower house 5 axle center place form path jointly provides hydraulic pressure to pop one's head in mesohigh oil circuit, one way valve protective device is set in high-pressure oil passage, described one way valve protective device is made up of one way valve push rod 6, steel ball 7, one-way valve seat 8, described one-way valve seat 8 is fixed by fixed block 2, one way valve push rod 6 is fixed by lower house 5, arrange a steel ball 7 between described one-way valve seat 8 and one way valve push rod 6, described fixed block 2 is provided with the step of restriction steel ball 7 shift position, described fixed block 2 and lower house 5 junction are provided with the sealing ring 11 for sealing high-pressure oil passage junction.
Above-mentioned safety pin 3 is shear pin.
Above-mentioned upper shell 1 is connected by multiple screw 9 with fixed block 2, forms a fixed body.
Above-mentioned upper shell 1 is connected by screw pin 10 with steady pin 4.Described stopper slot is oval groove, and before not connecting safety pin 3, lower house 5 can be relative up and down with steady pin 4.
Above-mentioned fixed block 2 is threaded connection with one-way valve seat 8, one-way valve seat 8 is processed with some for crossing oily aperture.
Above-mentioned lower house 5 is threaded connection with one way valve push rod 6, one way valve push rod 6 is processed with some for crossing oily aperture.
As shown in Figure 1, 2, it is underground hydraulic pressure probe antiseize device first working state figure in figure, hydraulic pressure probe upper end hydraulic oil is flowed into by hydraulic fluid port a, aperture on one-way valve seat 8, the gap between steel ball 7 and fixed block 2, the aperture on one way valve push rod 6, then flow out to the driven plunger of hydraulic pressure probe lower end from hydraulic fluid port b, thus realize telescoping ram be flared to the borehole wall, in this case, hydraulic pressure probe lower end weight is born by safety pin 3.If hydraulic pressure probe internal high pressure liquid can proper flow, antiseize device can not work, and hydraulic pressure probe is in the first duty.
When hydraulic pressure probe is in pressurized state work in down-hole, telescoping ram is in open configuration, causing hydraulic pressure to pop one's head in internal hydraulic system for a certain reason cannot pressure release, hydraulic pressure probe telescoping ram cannot draw in, in this case, by extract pressure probe on cable, due to the safety pin 3 acting on upper shell 1 and lower house 5 junction of cable tension will produce the axial force of many times of probe weight, safety pin 3 is caused to be cut off.Now, the first duty will be converted to the second duty.
As shown in Figure 3,4, it is underground hydraulic pressure probe antiseize device the second working state figure in figure, safety pin 3 is cut off, upper shell 1 and lower house 5 relative sliding, fixed block 2 and lower house 5 junction depart from sealing surface by a sealing ring 11, steady pin 4 and lower house 5 relative sliding, hydraulic pressure probe lower end weight is carried by steady pin 4.
Under the second duty, by above-mentioned slip, hydraulic pressure probe upper end pressure oil pressure is greater than the pressure of lower end pressure oil, steel ball 7 moves to fixed block 2 step place under pressure to lower end, play the effect of one way valve, pressure oil flows into as steel ball 7 from import a, effectively avoids the leakage of hydraulic pressure probe upper end hydraulic oil; Hydraulic pressure probe lower end hydraulic oil flows into from hydraulic fluid port b, and because fixed block 2 and the sealing ring 11 of lower house 5 junction depart from sealing surface, hydraulic oil will overflow from oil spilling mouth c, and hydraulic pressure probe lower end pressure drop, telescoping ram realizes drawing in, and namely card well phenomenon is removed.
It should be noted that and in this case can not pressurize to telescoping ram, in order to recover the normal work of hydraulic pressure probe, only needing hydraulic pressure probe to mention ground, changing safety pin 3.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a underground probe antiseize device, it is characterized in that: comprise for hydraulic pressure pop one's head in upper shell that upper end is connected, for popping one's head in lower house, fixed block, the one way valve protective device that lower end is connected with hydraulic pressure, described upper shell, lower house, fixed block connect together, described fixed block and upper shell pass through screw fastening, described upper shell and lower house are fixed by safety pin, described upper shell lower end is provided with steady pin, is provided with the stopper slot for limiting steady pin shift position with the lower house of steady pin corresponding section; Described fixed block axle center place and lower house axle center place form path jointly provides hydraulic pressure to pop one's head in mesohigh oil circuit, one way valve protective device is set in high-pressure oil passage, described one way valve protective device is made up of one way valve push rod, steel ball, one-way valve seat, described one-way valve seat is fixed by fixed block, one way valve push rod is fixed by lower house, arrange a steel ball between described one-way valve seat and one way valve push rod, described fixed block is provided with the step of restriction steel ball shift position; Described fixed block and lower house junction are provided with the sealing ring for sealing high-pressure oil passage junction.
2. underground probe antiseize device according to claim 1, is characterized in that: described upper shell is connected by multiple screw with fixed block, forms a fixed body.
3. underground probe antiseize device according to claim 1, is characterized in that: described upper shell is connected by screw pin with steady pin.
4. underground probe antiseize device according to claim 1, is characterized in that: described stopper slot is oval groove, and before not connecting safety pin, lower house can be relative up and down with steady pin.
5. underground probe antiseize device according to claim 1, is characterized in that: described fixed block and one-way valve seat are threaded connection, and one-way valve seat is processed with some for crossing oily aperture.
6. underground probe antiseize device according to claim 1, is characterized in that: described lower house and one way valve push rod are threaded connection, and one way valve push rod is processed with some for crossing oily aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510159027.XA CN104879119B (en) | 2015-04-07 | 2015-04-07 | A kind of underground probe antiseize device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510159027.XA CN104879119B (en) | 2015-04-07 | 2015-04-07 | A kind of underground probe antiseize device |
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| Publication Number | Publication Date |
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| CN104879119A true CN104879119A (en) | 2015-09-02 |
| CN104879119B CN104879119B (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510159027.XA Active CN104879119B (en) | 2015-04-07 | 2015-04-07 | A kind of underground probe antiseize device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236839A (en) * | 2020-03-10 | 2020-06-05 | 中石化江汉石油工程有限公司测录井公司 | Hydraulic sidewall contact device of cased well cable logging tractor |
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| US20080308279A1 (en) * | 2007-06-14 | 2008-12-18 | Schlumberger Technology Corporation | Apparatus and Method for Unsticking a Downhole Tool |
| CN201486549U (en) * | 2009-09-01 | 2010-05-26 | 中国石油集团西部钻探工程有限公司测井公司 | Micro-spherical hydraulic geolock |
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2015
- 2015-04-07 CN CN201510159027.XA patent/CN104879119B/en active Active
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| CN2658372Y (en) * | 2003-11-19 | 2004-11-24 | 胜利油田高原连续抽油杆有限责任公司 | Safety joint of releasing pump clamp |
| US20080308279A1 (en) * | 2007-06-14 | 2008-12-18 | Schlumberger Technology Corporation | Apparatus and Method for Unsticking a Downhole Tool |
| CN201486549U (en) * | 2009-09-01 | 2010-05-26 | 中国石油集团西部钻探工程有限公司测井公司 | Micro-spherical hydraulic geolock |
| CN102734511A (en) * | 2012-06-27 | 2012-10-17 | 中国海洋石油总公司 | Core pushing control valve |
| CN203271720U (en) * | 2013-05-29 | 2013-11-06 | 中国石油集团长城钻探工程有限公司 | Outward relief type pressure relief system for well logging |
| CN103291289A (en) * | 2013-07-03 | 2013-09-11 | 北京环鼎科技有限责任公司 | Hydraulic sidewall contact device |
| CN204082067U (en) * | 2014-04-04 | 2015-01-07 | 托普威尔石油技术股份公司 | A kind of tubing string release device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111236839A (en) * | 2020-03-10 | 2020-06-05 | 中石化江汉石油工程有限公司测录井公司 | Hydraulic sidewall contact device of cased well cable logging tractor |
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| CN104879119B (en) | 2017-06-30 |
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