CN203271720U - Outward relief type pressure relief system for well logging - Google Patents
Outward relief type pressure relief system for well logging Download PDFInfo
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- CN203271720U CN203271720U CN 201320304929 CN201320304929U CN203271720U CN 203271720 U CN203271720 U CN 203271720U CN 201320304929 CN201320304929 CN 201320304929 CN 201320304929 U CN201320304929 U CN 201320304929U CN 203271720 U CN203271720 U CN 203271720U
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- oil pipe
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Abstract
The utility model relates to a through-casing resistivity logging instrument for petroleum well logging, in particular to an outward relief type pressure relief system for well logging. The interior of the upper end of a sealing assembly shell of the system is fixedly connected with a sealing safety shell, the upper end of the sealing safety shell is connected with the inner wall of the lower end of a safety mechanism connecting shell through a safety pin, a pressure oil pipe is inserted in the lower end of a center duct of the sealing safety shell, the pressure oil pipe is sleeved with a sealing rubber blanket, the upper end of the sealing rubber blanket is fixed with the sealing safety shell through a guide pillar, a rubber blanket pressing plate is arranged at the lower end of the sealing rubber blanket and compresses the sealing rubber blanket through a first sunk screw, and the pressure oil pipe is connected with the rubber blanket pressing plate through a cylinder head screw and a regulating ring. According to the outward relief type pressure relief system, when well logging cannot relieve pressure, pressure can be effectively relieved by the instrument, the risk that a cable instrument is broken and drops to a well bottom because the upward lifting force is too large is completely eradicated, through the outward relief type oil discharging mode, internal waste oil can be discharged in time so that the waste oil cannot enter an oil storage bag to interfere with and damage an internal hydraulic system, and therefore safety of the instrument is guaranteed.
Description
Technical field:
The utility model relates to a kind of used in oil well logging through casing resistivity logging instrument, and particularly a kind of well logging is with the formula pressure relief system that leaks.
Background technology:
Existing through casing resistivity logging instrument pressure relief system adopts internal drainage type to force pressure release, and safety pin is broken after upper lifting force is greater than predetermined value, and pressure line and discharge side are connected, and the hydraulic oil in pressure line flows back to completes pressure release in oil storage bag.The problem that exists is that even hydraulic oil is back in oil storage bag, intrasystem gas also can make this pressure release mode lose efficacy when hydraulic oil produces gas in the down-hole because of environmental evolution, and electrode probe still can't be regained and not reach the pressure release purpose.
The utility model content:
The technical problems to be solved in the utility model is to provide a kind of well logging with the formula pressure relief system that leaks, this system has realized that well logging can't can make the effective pressure release of instrument during pressure release, stop excessive the drop risk in shaft bottom of cable instrument of breaking of upper lifting force, the formula that leaks oil extraction mode makes inner waste oil in time discharge to be unlikely to enter oil storage bag to disturb to damage the internal hydraulic pressure system, ensures instrument safety.Overcome the deficiency that there is the pressure release failure phenomenon in existing internal drainage type pressure relief system.
technical solution adopted in the utility model is: a kind of well logging comprises that with the formula pressure relief system that leaks release mechanism connects hydraulic tube, safety valve flowline and the pressure oil pipe between housing, black box shell, hydraulic pressure and measurement electrode, inside, black box shell upper end is fixedly connected with the sealingly secure housing, sealingly secure housing upper end is connected housing lower end inwall and is connected with release mechanism by safety pin, the lower end of pressure oil pipe insert-seal Safety shell central duct, pressure oil pipe is set with sealing rubber pad, the sealing rubber pad upper end is fixed by lead and sealingly secure housing, the rubber pad pressing plate is located at the sealing rubber pad lower end and passes through sunk screw I press seal rubber pad, pressure oil pipe is connected with the rubber pad pressing plate with adjustable ring by fillister head screw, have relief hole on the sidewall of sealingly secure housing upper end, the upper end of safety valve flowline insert-seal Safety shell central duct also seals up relief hole, the safety slide outside is connected inner walls by the sunk screw II with release mechanism and is connected, the safety slide lower end is provided with shaft block ring, shaft block ring is sleeved on the safety valve flowline, the adjusting nut lower end is pressed on safety slide, adjusting nut upper end inwall connects adjusting screw(rod), adjusting screw(rod) lower end inwall connection safety valve flowline, adjusting screw(rod) upper end outer wall connects hydraulic tube between hydraulic pressure and measurement electrode by lock nut.
The beneficial effects of the utility model are: the utility model is due to the mode that has adopted the formula that leaks, thereby has a function that well logging can make the effective pressure release of instrument can't pressure release the time, stop excessive the drop risk in shaft bottom of cable instrument of breaking of upper lifting force, the formula that leaks oil extraction mode makes inner waste oil in time discharge to be unlikely to enter oil storage bag to disturb to damage the internal hydraulic pressure system, ensures instrument safety.
Description of drawings:
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
as shown in Figure 1, a kind of well logging comprises that with the formula pressure relief system that leaks release mechanism connects hydraulic tube 19, safety valve flowline 10 and the pressure oil pipe 20 between housing 17, black box shell 18, hydraulic pressure and measurement electrode, black box shell 18 inside, upper end are fixedly connected with sealingly secure housing 6, sealingly secure housing 6 upper ends are connected housing 17 lower end inwalls and are connected with release mechanism by safety pin 15, the lower end of pressure oil pipe 20 insert-seal Safety shell 6 central duct, pressure oil pipe 20 is set with sealing rubber pad 5, sealing rubber pad 5 upper ends are fixing with sealingly secure housing 6 by lead 4, rubber pad pressing plate 3 is located at sealing rubber pad 5 lower ends and passes through sunk screw I 2 press seal rubber pads 5, pressure oil pipe 20 is connected with adjustable ring by fillister head screw 1 and is connected with rubber pad pressing plate 3, have relief hole 16 on sealingly secure housing 6 upper end sidewalls, the upper end of safety valve flowline 10 insert-seal Safety shell 6 central duct also seals up relief hole 16, safety slide 9 outsides are connected housing 17 inwalls and are connected with release mechanism by sunk screw II 8, safety slide 9 lower ends are provided with shaft block ring 7, shaft block ring 7 is sleeved on safety valve flowline 10, adjusting nut 11 lower ends are pressed on safety slide 9, adjusting nut 11 upper end inwalls connect adjusting screw(rod) 12, adjusting screw(rod) 12 lower end inwall connection safety valve flowlines 10, the hydraulic tube 19 that adjusting screw(rod) 12 upper end outer walls connect between hydraulic pressure and measurement electrode by lock nut 13.
The utility model is between the hydraulic system section and electrode system section of through casing resistivity logging instrument.Suppress when normal at instrument, interior oil stream flows into safety valve flowline 10 from pressure oil pipe 20 through the formula pressure relief system that leaks, and acts on afterwards each probe of electrode system.When extremely can't release appears in the hydraulic system internal pressure, connection sealingly secure housing 6 is connected housing 17 with release mechanism safety pin 15 will be subjected to the upper lifting force effect of loading greater than safety pin 15 and be cut off, and then sealingly secure housing 6 is relatively moved on safety valve flowline 10 is axial, the relief hole 16 that is positioned on sealingly secure housing 6 by 10 shutoff of safety valve flowline is communicated with the formula pressure relief system internal cavity that leaks, make the high-pressure oil flow of hydraulic system inside be discharged in external environment through relief hole 16, complete the purpose of safe and effective pressure release.
Be understandable that, above about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (1)
1. a well logging with the formula pressure relief system that leaks, comprises that release mechanism connects hydraulic tube (19), safety valve flowline (10) and the pressure oil pipe (20) between housing (17), black box shell (18), hydraulic pressure and measurement electrode, it is characterized in that: black box shell (18) inside, upper end is fixedly connected with sealingly secure housing (6), sealingly secure housing (6) upper end is connected housing (17) lower end inwall by safety pin (15) and is connected with release mechanism, the lower end of pressure oil pipe (20) insert-seal Safety shell (6) central duct, pressure oil pipe (20) is set with sealing rubber pad (5), sealing rubber pad (5) upper end is fixing by lead (4) and sealingly secure housing (6), rubber pad pressing plate (3) is located at sealing rubber pad (5) lower end and passes through sunk screw I (2) press seal rubber pad (5), pressure oil pipe (20) is connected 14 by fillister head screw (1) with adjustable ring) be connected with rubber pad pressing plate (3), have relief hole (16) on the sidewall of sealingly secure housing (6) upper end, the upper end of safety valve flowline (10) insert-seal Safety shell (6) central duct also seals up relief hole (16), safety slide (9) outside is connected housing (17) inwall by sunk screw II (8) and is connected with release mechanism, safety slide (9) lower end is provided with shaft block ring (7), shaft block ring (7) is sleeved on safety valve flowline (10), adjusting nut (11) lower end is pressed on safety slide (9), adjusting nut (11) upper end inwall connects adjusting screw(rod) (12), adjusting screw(rod) (12) lower end inwall connection safety valve flowline (10), adjusting screw(rod) (12) upper end outer wall is by the hydraulic tube (19) between lock nut (13) connection hydraulic pressure and measurement electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320304929 CN203271720U (en) | 2013-05-29 | 2013-05-29 | Outward relief type pressure relief system for well logging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320304929 CN203271720U (en) | 2013-05-29 | 2013-05-29 | Outward relief type pressure relief system for well logging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203271720U true CN203271720U (en) | 2013-11-06 |
Family
ID=49502158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320304929 Expired - Fee Related CN203271720U (en) | 2013-05-29 | 2013-05-29 | Outward relief type pressure relief system for well logging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203271720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879119A (en) * | 2015-04-07 | 2015-09-02 | 武汉海阔科技有限公司 | Device for preventing downhole probe from getting stuck |
-
2013
- 2013-05-29 CN CN 201320304929 patent/CN203271720U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879119A (en) * | 2015-04-07 | 2015-09-02 | 武汉海阔科技有限公司 | Device for preventing downhole probe from getting stuck |
| CN104879119B (en) * | 2015-04-07 | 2017-06-30 | 武汉海阔科技有限公司 | A kind of underground probe antiseize device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20160529 |