CN202467813U - Measuring electrode pushing mechanism for through casing resistivity logging instrument - Google Patents
Measuring electrode pushing mechanism for through casing resistivity logging instrument Download PDFInfo
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- CN202467813U CN202467813U CN2012200261949U CN201220026194U CN202467813U CN 202467813 U CN202467813 U CN 202467813U CN 2012200261949 U CN2012200261949 U CN 2012200261949U CN 201220026194 U CN201220026194 U CN 201220026194U CN 202467813 U CN202467813 U CN 202467813U
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- probe
- lower slider
- measurement electrode
- casing
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Abstract
The utility model discloses a measuring electrode pushing mechanism for a through casing resistivity logging instrument. The measuring electrode pushing mechanism comprises a transverse oil cylinder, wherein a fixing sleeve is arranged at the longitudinal symmetric central position of the transverse oil cylinder; an upper sliding middle sleeve and a lower sliding middle sleeve are arranged inside the fixing sleeve; an upper sliding casing and a lower sliding casing are arranged in the upper sliding middle sleeve and the lower sliding middle sleeve; measuring electrode probes are arranged inside the upper sliding casing and the lower sliding casing; the peripheries of the measuring electrode probes are provided with probe upper insulating sleeves; and short connecting rods are hinged between a connecting rod hinging sleeve on the end part of a piston of the transverse oil cylinder and the upper sliding casing as well as between the connecting rod hinging sleeve on the end part of the piston of the transverse oil cylinder and the lower sliding casing. According to the measuring electrode pushing mechanism, the technical problem of the influence of breakage of a pushing bladder caused by a high temperature environment on the reliability of the logging instrument can be avoided, formation resistivity can be measured reliably at a high temperature, the logging success rate is increased greatly, and the instrument maintenance workload is reduced simultaneously.
Description
Technical field
The utility model relates to the electrical method downhole logging instrument in the petroleum industry development field, refers to a kind of through casing resistivity logging appearance measurement electrode backup mechanism particularly.
Background technology
The through casing resistivity logging appearance is to carry out the logger that formation resistivity is measured.When using the well logging of through casing resistivity logging appearance, hydraulic system pushes against the measurement electrode probe on the metal sleeve inwall through backup mechanism, requires the measurement electrode probe reliably to contact with casing wall, and contact resistance is tried one's best little and stable.Logging instrument is accomplished measurement and measuring method and is surveyed for point in the down-hole; Point of every measurement needs backup measurement electrode probe once at least; Run into casing wall burn into wax deposition when serious, same point needs repeatedly backup could guarantee that the measurement electrode probe contacts well with casing wall.Calculate by effectively fathoming 50 meters, well logging once needs backup measurement electrode probe 100 times usually.
The measurement electrode probe backup of existing through casing resistivity logging appearance utilizes hydraulic power to promote measurement electrode inner rubber capsule to open the realization backup usually, utilizes spring that the measurement electrode probe is regained after shedding hydraulic coupling.Notice of authorization number is exactly to disclose a kind of measurement electrode backup to use leather bag for the Chinese patent of CN201310347Y " a kind of TCR instrument backup leather bag ".Adopt the weak point of rubber capsule backup structure to be: deep when well logging, particularly surpass 3000 meters, after the well temperature surpassed 130 degree, the life-span sharply descended when using under the used rubber capsule hot environment, occurs easily breaking, and reliability reduces significantly.In addition, every logging instrument is provided with 8 rubber capsules altogether, as long as to break appear in one of them rubber capsule, a then whole instrument can't operate as normal, greatly reduces the instrument whole reliability.
Summary of the invention
The purpose of the utility model is exactly that a kind of through casing resistivity logging appearance measurement electrode backup mechanism that formation resistivity is measured that realizes reliably carrying out under the higher temperature will be provided.
For realizing above-mentioned purpose, the through casing resistivity logging appearance measurement electrode backup mechanism that the utility model designed comprises the load-bearing coupling assembling that is arranged on left and right two ends, and is sleeved on the electrode shell between the left and right two ends load-bearing coupling assembling.Inner and the symmetric position place that be positioned at left and right two ends load-bearing coupling assembling of said electrode shell is provided with transverse hydro-cylinder.Said transverse hydro-cylinder is made up of the piston in cylinder sleeve that is fixed on electrode shell and the cylinder sleeve; Vertical symmetrical centre position of said transverse hydro-cylinder is provided with the fixed cover that is fixed on electrode shell, and said fixed cover set inside has last slip intermediate sleeve and the lower slider intermediate sleeve that is slidingly matched with it; Said going up in slip intermediate sleeve and the lower slider intermediate sleeve is respectively arranged with sliding sleeve and lower slider sleeve; Said inside of going up sliding sleeve and lower slider sleeve is provided with the measurement electrode probe, and the periphery of said measurement electrode probe is provided with insulation sleeve on the probe, and said going up between sliding sleeve or lower slider sleeve and the measurement electrode probe is provided with felt pad under the probe.The end of said piston is provided with the rod hinge connection cover; The hinged respectively short connecting rod that is provided with between the two ends up and down of said rod hinge connection cover and last sliding sleeve and the lower slider sleeve.
Further, for making backup mechanism reliable recovery, the protection linkage is not impaired, and prevents the excessive and Ka Jing of logging instrument diameter, and a said end of going up sliding sleeve and lower slider sleeve is respectively arranged with the probe card fixed cover that is slidingly matched with it.The end face of said probe card fixed cover is fixed with probe card, is provided with the probe protection spring on said probe card and the probe between the insulation sleeve.The outer ring, two ends of said electrode shell is slidingly matched and is provided with slip cap; The inboard of said slip cap is provided with the spring base that is connected with said electrode shell; Be provided with the slip cap back-moving spring between said spring base and the slip cap; The hinged long connecting rod that is provided with between said slip cap and the probe card.
Again further, in order to guarantee the correct guidance of measurement electrode probe, and reduce relative sliding-contact area, a said end of going up sliding sleeve and lower slider sleeve is set with sliding sleeve, and said sliding sleeve and last slip intermediate sleeve and lower slider intermediate sleeve are slidingly matched;
Further, reliable in order to guarantee that logging instrument connects, said load-bearing coupling assembling links to each other with electrode shell through threaded collar.
The advantage of the utility model is: the through casing resistivity logging appearance measurement electrode backup mechanism that is designed adopts the transverse hydro-cylinder of centered as power, and has adopted linkage as Poewr transmission mechanism.During measurement, transverse hydro-cylinder can produce huge hydraulic thrust, through short connecting rod transmission of power is arrived the measurement electrode probe, and the measurement electrode probe stretches out and penetrates casing wall to be measured.Cancelled the backup leather bag in the existing structure; The backup leather bag that can avoid causing because of hot environment breaks and influences logging instrument technology of dependability problem; Can reliably carry out formation resistivity at higher temperature and measure, the well logging success rate is improved greatly, reduce the instrument maintenance workload simultaneously.
Description of drawings
Structural representation when Fig. 1 is in rounding state for the utility model through casing resistivity logging appearance measurement electrode backup mechanism.
Structural representation when Fig. 2 is in open configuration for this backup mechanism.
Shaft section sketch map when Fig. 3 is in rounding state for this backup mechanism.
Fig. 4 is the oil pipe and the Wiring structure sketch map of this backup mechanism.
Schematic diagram of mechanism when Fig. 5 is in rounding state for this backup mechanism.
Schematic diagram of mechanism when Fig. 6 is in open configuration for this backup mechanism.
Among the figure: load-bearing coupling assembling 1, threaded collar 2, slip cap 3, slip cap back-moving spring 4, electrode shell 5, long connecting rod 6; Short connecting rod 7 is measured wire component 8, probe card 9, and probe protection spring 10, measurement electrode probe 11, insulation sleeve 12 on the probe; Spring base 13, probe card fixed cover 14, fixed cover 15, transverse hydro-cylinder 16, cylinder sleeve 16a, piston 16b; Black box 16c, last slip intermediate sleeve 17, lower slider intermediate sleeve 18, rod hinge connection cover 19, last sliding sleeve 20; Lower slider sleeve 21, felt pad 22 under the probe, oil pipe 23, sliding sleeve 24, guider screw 25.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to describe in detail.
As depicted in figs. 1 and 2, the through casing resistivity logging appearance measurement electrode backup mechanism of the utility model is symmetrical structure, comprises the load-bearing coupling assembling 1 that is arranged on left and right two ends, and left and right two ends load-bearing coupling assembling 1 links to each other with electrode shell 5 through threaded collar 2.Inner and the symmetric position place that be positioned at left and right two ends load-bearing coupling assembling 1 of electrode shell 5 is provided with transverse hydro-cylinder 16; Transverse hydro-cylinder 16 is made up of the piston 16b in cylinder sleeve 16a that is fixed on electrode shell 5 and the cylinder sleeve 16a, and cylinder sleeve 16a and piston 16b carry out movable sealing through black box 16c.
The vertical symmetrical centre of the cylinder sleeve 16a position of transverse hydro-cylinder 16 has circular port; Be provided with the fixed cover 15 that is fixed on electrode shell 5 in the circular port; For the ease of installing; Fixed cover 15 is made up of two parts of upper and lower symmetric arrangement, and inside is respectively arranged with the last slip intermediate sleeve 17 and lower slider intermediate sleeve 18 that is slidingly matched with it, has formed first order slide-and-guide; Be respectively arranged with sliding sleeve 20 and lower slider sleeve 21 in last slip intermediate sleeve 17 and the lower slider intermediate sleeve 18; Last sliding sleeve 20 is set with sliding sleeve 24 with lower slider sleeve 21 relative ends respectively through resilient key; Sliding sleeve 24 is slidingly matched with lower slider intermediate sleeve 18 with last slip intermediate sleeve 17 respectively, has formed second level slide-and-guide.
Last sliding sleeve 20 is respectively arranged with the probe card fixed cover 14 that is slidingly matched with it with lower slider sleeve 21 opposing ends, and the guider screw 25 that slides through between the two leads.The end face of probe card fixed cover 14 is fixed with probe card 9 through screw.The inside of last sliding sleeve 20 and lower slider sleeve 21 is provided with measurement electrode probe 11, and measurement electrode probe 11 needle point place materials adopt carbide alloy.Be provided with felt pad 22 under the probe of peek material between last sliding sleeve 20 or lower slider sleeve 21 and the measurement electrode probe 11; The periphery of measurement electrode probe 11 is provided with insulation sleeve 12 on the probe; Make measurement electrode probe 11 and electrode shell 5 electric insulations, so that can measure the ultra-weak electronic signal of measured point on the casing wall exactly through measurement electrode probe 11.Be provided with probe protection spring 10 on probe card 9 and the probe between the insulation sleeve 12.Shaft section when this backup mechanism is in rounding state is as shown in Figure 3.
The end of piston 16b is connected with rod hinge connection cover 19 through steady pin, the hinged respectively short connecting rod 7 that is provided with between the two ends up and down of rod hinge connection cover 19 and last sliding sleeve 20 and the lower slider sleeve 21.Transverse hydro-cylinder 16, short connecting rod 7 and go up sliding sleeve 20 and lower slider sleeve 21 has formed a double-slider mechanism can be converted into the thrust that transverse hydro-cylinder 16 produces the required backup power of measurement electrode probe 11.
The outer ring, two ends of electrode shell 5 is slidingly matched and is provided with slip cap 3; The inboard of slip cap 3 is provided with the spring base 13 that is connected with said electrode shell 5; Be provided with slip cap back-moving spring 4 between spring base 13 and the slip cap 3, the hinged long connecting rod 6 that is provided with between slip cap 3 and the probe card 9.Slip cap 3, long connecting rod 6 and probe card 9 have also formed a double-slider mechanism, and through probe protection spring 10 transferring power, main effect is to make backup mechanism reliable recovery, and the protection linkage is not impaired, and prevent the excessive and Ka Jing of logging instrument diameter.
During actual arrangement, the movement position of measuring wire component 8 is retrained by the ply-yarn drill on the long connecting rod 6, and oil pipe 23 is connected through welding manner with cylinder sleeve 16a, and nipple is positioned over open place, space in the electrode shell 5, and is as shown in Figure 4.
The operating principle of the utility model is following:
When transmitting the hydraulic oil of hydraulic system in the transverse hydro-cylinder 16; Piston 16b under the oil pressure effect to the axis of symmetry central motion of transverse hydro-cylinder 16; The motion that the hinged cover of drivening rod 19 produces equidirectionals, and power is passed to sliding sleeve 20 through short connecting rod 7 makes it to stretch out with lower slider sleeve 21, owing to the symmetry of structure; Measurement electrode probe 11 penetrates and realizes in the casing wall measuring along the radial motion (promptly becoming vertical direction with pit shaft) of electrode shell 5.At this moment, probe protection spring 10 promotes probe cards 9 also along the moving radially of electrode shell 5, and through long connecting rod 6 with on transmission of power to the slip cap 3, the slip cap 3 of right ends synchronously compresses slip cap back-moving spring 4 and inwardly receives.
When the hydraulic system pressure release, transverse hydro-cylinder 16 inside and outside differential pressures are zero, and the thrust that resets of slip cap back-moving spring 4 outwards pushes back slip cap 3 greater than the strength that is passed over through linkage by transverse hydro-cylinder at this moment.At this moment, slip cap 3 drives through long connecting rod 6, probe card 9 and probe protection spring 10 and goes up sliding sleeve 20 and 21 withdrawals of lower slider sleeve.
The utility model is symmetrical structure, and external diameter is ￠ 95mm during rounding state, and probe external diameter maximum can reach ￠ 172mm during open configuration; The slip of two-stage guiding can guarantee the axis normal of the movement locus and the electrode shell 5 of measurement electrode probe 11; Promptly vertical with casing wall, can adapt to the cased well specification and be 5 '～7 ', the well temperature is 150 ℃; Well is pressed and is 100Mpa, pressure >=50N that measurement electrode probe 11 produces the borehole wall.
Claims (5)
1. through casing resistivity logging appearance measurement electrode backup mechanism; Comprise the load-bearing coupling assembling (1) that is arranged on left and right two ends; And be sleeved on the electrode shell (5) between the left and right two ends load-bearing coupling assembling (1), it is characterized in that: the inner and symmetric position place that be positioned at left and right two ends load-bearing coupling assembling (1) of said electrode shell (5) is provided with transverse hydro-cylinder (16); Said transverse hydro-cylinder (16) is made up of the piston (16b) in cylinder sleeve that is fixed on electrode shell (5) (16a) and the cylinder sleeve (16a); Vertical symmetrical centre position of said transverse hydro-cylinder (16) is provided with the fixed cover (15) that is fixed on electrode shell (5), and said fixed cover (15) set inside has last slip intermediate sleeve (17) and the lower slider intermediate sleeve (18) that is slidingly matched with it; Said going up in slip intermediate sleeve (17) and the lower slider intermediate sleeve (18) is respectively arranged with sliding sleeve (20) and lower slider sleeve (21); Said inside of going up sliding sleeve (20) and lower slider sleeve (21) is provided with measurement electrode probe (11); The periphery of said measurement electrode probe (11) is provided with insulation sleeve on the probe (12); Said going up between sliding sleeve (20) or lower slider sleeve (21) and the measurement electrode probe (11) is provided with felt pad under the probe (22); The end of said piston (16b) is provided with rod hinge connection cover (19); The hinged respectively short connecting rod (7) that is provided with between the two ends up and down of said rod hinge connection cover (19) and last sliding sleeve (20) and the lower slider sleeve (21).
2. through casing resistivity logging appearance measurement electrode backup according to claim 1 mechanism is characterized in that: a said end of going up sliding sleeve (20) and lower slider sleeve (21) is respectively arranged with the probe card fixed cover (14) that is slidingly matched with it; The end face of said probe card fixed cover (14) is fixed with probe card (9); Be provided with probe protection spring (10) on said probe card (9) and the probe between the insulation sleeve (12); The outer ring, two ends of said electrode shell (5) is slidingly matched and is provided with slip cap (3); The inboard of said slip cap (3) is provided with the spring base (13) that is connected with said electrode shell (5); Be provided with slip cap back-moving spring (4) between said spring base (13) and the slip cap (3); The hinged long connecting rod (6) that is provided with between said slip cap (3) and the probe card (9).
3. through casing resistivity logging appearance measurement electrode backup according to claim 1 and 2 mechanism; It is characterized in that: a said end of going up sliding sleeve (20) and lower slider sleeve (21) is set with sliding sleeve (24), and said sliding sleeve (24) is slidingly matched with last slip intermediate sleeve (17) and lower slider intermediate sleeve (18).
4. through casing resistivity logging appearance measurement electrode backup according to claim 1 and 2 mechanism is characterized in that: said load-bearing coupling assembling (1) links to each other with electrode shell (5) through threaded collar (2).
5. through casing resistivity logging appearance measurement electrode backup according to claim 3 mechanism is characterized in that: said load-bearing coupling assembling (1) links to each other with electrode shell (5) through threaded collar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200261949U CN202467813U (en) | 2012-01-19 | 2012-01-19 | Measuring electrode pushing mechanism for through casing resistivity logging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200261949U CN202467813U (en) | 2012-01-19 | 2012-01-19 | Measuring electrode pushing mechanism for through casing resistivity logging instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467813U true CN202467813U (en) | 2012-10-03 |
Family
ID=46915978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200261949U Withdrawn - After Issue CN202467813U (en) | 2012-01-19 | 2012-01-19 | Measuring electrode pushing mechanism for through casing resistivity logging instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467813U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536198A (en) * | 2012-01-19 | 2012-07-04 | 武汉海王机电工程技术公司 | Electrode measuring pushing-against mechanism of casing-through resistivity logging instrument |
| CN103821497A (en) * | 2014-03-04 | 2014-05-28 | 西安石油大学 | Electrode telescoping ram |
-
2012
- 2012-01-19 CN CN2012200261949U patent/CN202467813U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536198A (en) * | 2012-01-19 | 2012-07-04 | 武汉海王机电工程技术公司 | Electrode measuring pushing-against mechanism of casing-through resistivity logging instrument |
| CN102536198B (en) * | 2012-01-19 | 2015-04-15 | 武汉海王机电工程技术公司 | Electrode measuring pushing-against mechanism of casing-through resistivity logging instrument |
| CN103821497A (en) * | 2014-03-04 | 2014-05-28 | 西安石油大学 | Electrode telescoping ram |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121003 Effective date of abandoning: 20150415 |
|
| RGAV | Abandon patent right to avoid regrant |