CN202194655U - Eight-arm detector for micro-resistivity scanning imaging logging instrument - Google Patents
Eight-arm detector for micro-resistivity scanning imaging logging instrument Download PDFInfo
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- CN202194655U CN202194655U CN2011202795698U CN201120279569U CN202194655U CN 202194655 U CN202194655 U CN 202194655U CN 2011202795698 U CN2011202795698 U CN 2011202795698U CN 201120279569 U CN201120279569 U CN 201120279569U CN 202194655 U CN202194655 U CN 202194655U
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Abstract
The utility model relates to an eight-arm detector for a micro-resistivity scanning imaging logging instrument, which mainly solves the problem that an existing micro-resistivity scanning imaging logging instrument is low in well wall coverage rate and the imaging effect is not distinct and accurate enough. The eight-arm detector for the micro-resistivity scanning imaging logging instrument is characterized in that a direct current motor is sequentially connected with a torque limiter, an anti-reversion brake and a ball screw. The ball screw is connected with the upper ends of eight connecting rods, the ball screw and the lower ends of the eight connecting rods are connected to the upper portion of a guiding disc, the lower portion of the guiding disc is connected with eight groups of spring assemblies, the lower end of each spring assembly is connected with an upper support arm, a stroke potentiometer is fixedly installed on the ball screw, and the upper end of each spring assembly is fixedly connected with a well diameter potentiometer. Eight lower support arms are hinged to the circumference of the other end of a sealing sleeve pipe at intervals, and each connecting electrode plate is hinged between each upper support arm and each lower support arm. The eight-arm detector is high in well wall coverage rate and distinct and accurate in imaging effect.
Description
Technical field
The utility model relates to the probe on the used microresistivity scanning and imaging logging instrument in oil reservoir logging field, especially a kind of eight arm probes that are used on the microresistivity scanning and imaging logging instrument.
Background technology
Along with the demand steady-state growth of countries in the world,, press for the characteristic of more accurately understanding the oil-gas reservoir each side in order to strengthen the exploration ability and raising development benefit under the complex conditions to oil.The major advantage of microresistivity scanning imagery well logging is the image that near the resistivity changes with depth on the stratum of the borehole wall can be provided; Picture appearance is similar to the rock core section, can solve a series of problems aspect more complicated, more hidden reservoir exploration and the exploitation effectively: thin layer, thin interbed, fracture reservoir, low space less permeable layer, complex lithology reservoir evaluation; The confirming or the like of remaining oil saturation and distribution thereof in the exploitation of highly aqueous field has special advantages aspect complex lithology, the fractured reservoirs surveying.But telescoping ram exists borehole wall coverage scale low on the existing microresistivity scanning imagery well logging logging instrument, and imaging effect is clear inadequately accurately can not accurately to show the variation on borehole wall stratum comprehensively, influences logging effect.
Summary of the invention
In order to solve low, the not enough clear and accurate problem of imaging effect of borehole wall coverage scale that existing microresistivity scanning and imaging logging instrument exists.The utility model provides a kind of eight arm probes that are used on the microresistivity scanning and imaging logging instrument; These eight arm probe borehole wall coverage scales that are used on the microresistivity scanning and imaging logging instrument are high; Imaging effect is clear accurately, can accurately show the variation on borehole wall stratum comprehensively.
The technical scheme of the utility model is: these a kind of eight arm probes that are used on the microresistivity scanning and imaging logging instrument comprise Sealed casing pipe, direct current generator; The interior end of Sealed casing pipe is direct current generator fixedly; Described direct current generator connects torque limiter, anti-reverse brake, ball-screw successively, and ball-screw connects the upper end of 8 connecting rods, and the lower end of 8 connecting rods is connected positioning disk top; The positioning disk bottom connects 8 groups of spring assemblies; The lower end of each spring assembly connects an end of a upper branch arm through the other end of Sealed casing pipe by pinning, fixed installation stroke potentiometer on the ball-screw, and each spring assembly upper end is fixedly connected a hole diameter potentiometer; The lower end of described Sealed casing pipe connects the backup arm main body; The backup arm main body is two fixing up and down cylindrical shells; Be respectively upper shell and lower shell, the upper end of lower shell is at the upper shell intracavity bottom, and the upper shell enclosure axis is to having 8 open-works; The lower shell upper end is an end of hinged 8 lower branch arms in interval circumferentially; The pole plate arm that is articulated and connected between every the upper branch arm and the corresponding lower branch arm other end, pole plate arm are that pole plate connects the pole plate passing spool, and every upper branch arm and corresponding lower branch arm all pass the open-work of upper shell shell.
The utlity model has following beneficial effect: this is used for eight arm probes on the microresistivity scanning and imaging logging instrument owing to adopt the 8 imaging pole plates arranging that stagger each other that connect between upper branch arm and lower branch arm to be evenly distributed on around the well; Thereby increased coverage scale; Imaging effect is more clear accurately, and applied widely, simple to operation; Reliability is high, is applicable to the new detector of microresistivity scanning and imaging logging instrument.Simultaneously, when appearing at engineering problem in the down-hole, can accomplish independent withdrawal, continue image data, strong to the adaptive capacity of abominable hole condition, it is high to reduce engineering risk, improves logging operation efficient.
Description of drawings:
Accompanying drawing 1 is the structural representation of the utility model;
Accompanying drawing 2 is vertical views of the utility model;
Accompanying drawing 3 is vertical views of the positioning disk of the utility model;
Accompanying drawing 4 is structural representations of the pole plate arm of the utility model.
1-direct current generator among the figure, 2-torque limiter, the anti-reverse brake of 3-, 4-ball-screw, 5-stroke potentiometer; 6-hole diameter potentiometer, 7-positioning disk, 8-spring assembly, 9-upper branch arm; The 10-pole plate, 11-lower contact assembly, 12-lower branch arm, 13-connecting rod; The 14-Sealed casing pipe, 15-upper shell, 16-pole plate passing spool, 17-lower shell.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
Accompanying drawing 1 combines shown in the accompanying drawing 2, and these eight arm probes that are used on the microresistivity scanning and imaging logging instrument comprise Sealed casing pipe 14, direct current generator 1, and Sealed casing pipe 14 interior ends are direct current generator 1 fixedly; Described direct current generator 1 connects torque limiter 2, anti-reverse brake 3, ball-screw 4 successively; Ball-screw 4 connects the upper end of 8 connecting rods 13, and the lower end of connecting rod 13 is fixedly connected on the positioning disk 7, and is as shown in Figure 3; Positioning disk 7 bottoms are fixedly connected 8 groups of spring assemblies 8; The upper end of the lower end of 8 connecting rods 13 and 8 groups of spring assemblies 8 is fixed on the positioning disk 7 simultaneously, and the lower end of each spring assembly 8 fixedly mounts stroke potentiometer 5 through an end of a upper branch arm 9 of pin connection on the ball-screw 4; Be mainly used in the receipts situation of opening of monitoring probe, regulate backup power through monitoring simultaneously.Each spring assembly 8 upper end is fixedly connected a hole diameter potentiometer 6; Variation along with hole diameter; The leverage of backup arm causes the variation of potentiometer resistance, and the signal treatment conversion through the electronic circuit section becomes the hole diameter size, and whether it also can monitor backup arm simultaneously and open or draw in; The lower end of described Sealed casing pipe 14 connects backup arm main body 15; The backup arm main body is two fixing up and down cylindrical shells; Be respectively upper shell 15 and lower shell 17, the upper end of lower shell 17 is at upper shell 15 intracavity bottoms, and upper shell 15 enclosure axis are to having 8 open-works; Lower shell 17 upper ends are an end of hinged 8 lower branch arms 12 in interval circumferentially; The pole plate arm that is articulated and connected between every the upper branch arm 9 and corresponding lower branch arm 12 other ends, pole plate arm are that pole plate 10 connects pole plate passing spools 16, and every upper branch arm 9 and corresponding lower branch arm 12 all pass the open-work of upper shell 15 shells; Lower shell connects lower contact assembly 11 17 times, connects end nasal assembly as required or articulates instrument.
As shown in Figure 4, described adjacent pole plate 10 is circumferentially when drawing in and is in staggered distribution up and down, and pole plate is evenly distributed on around the well when opening, and increases coverage scale.Described spring assembly 8 is folded spring.
When this is used for the eight arm probes use on the microresistivity scanning and imaging logging instrument; After the direct current generator energized; Motor just changes, and DC voltage is provided, and becomes axial linear movement through rotatablely moving behind torque limiter, anti-reverse brake, the ball-screw; The direct current generator power supply drives torque limiter, anti-reverse brake, radially revolving force drive ball-screw rotation is provided, and changes axial linear movement into through ball-screw.Eight connecting rods that are fixed on ball-screw directly are connected on the positioning disk with eight groups of folded springs; Eight groups of folded springs directly are connected with eight groups of support arms through pin; The rectilinear motion that is produced by the ball-screw rotation promotes eight link motions; Promote the folded springs of common eight groups of connecting through positioning disk, eight groups of folded springs directly are connected with eight groups of support arms through pin, drive eight groups of support arms by the motion of folding spring and get out and pack up.The stroke potentiometer is fixedly mounted on the ball-screw and opens and shrink fully with the maximum of monitoring support arm with the ball-screw motion, reaches a control wall and opens and the purpose of shrinking.Eight groups of hole diameter potentiometers are fixed on the spring assembly upper end, measure the size of hole diameter through the contraction of hole diameter.This imaging logging instrument is equipped with eight backup arms and pole plate, and pole plate preceding discharge road and the ceramic button electrode of two rows are installed above, and total number of electrodes reaches 200; To the 8in well, borehole wall coverage scale can be near 85.3%, because hole anomaly; Eight backup arms recline the pressure of the borehole wall can not be all consistent; When the required pressure of a certain backup arm acquires a certain degree, will the required pressure of backup arm be alleviated in the compression of dish spring.When backup arm opened, ball-screw drove platen, promoted backup arm and outwards upheld.When backup arm shrank, the platen utilization was reclaimed the axle collar and is promoted the backup arm contraction.Lower contact assembly lower end can articulate instrument or end nose down.Compare with present general MEST probe, accurately show the variation on borehole wall stratum more comprehensively.Telescoping ram can be regulated backup power size according to different hole conditions, and is stronger to the adaptive capacity of abominable hole condition, reduces engineering risk, and reliability is high.
Claims (2)
1. eight arm probes that are used on the microresistivity scanning and imaging logging instrument; Comprise Sealed casing pipe (14), direct current generator (1); The interior end of Sealed casing pipe (14) is direct current generator (1) fixedly; It is characterized in that: described direct current generator (1) connects torque limiter (2), anti-reverse brake (3), ball-screw (4) successively, and ball-screw (4) connects the upper end of 8 connecting rods (13), and the lower end of 8 connecting rods (13) is connected positioning disk (7) top; Positioning disk (7) bottom connects 8 groups of spring assemblies (8); The lower end of each spring assembly (8) connects an end of a upper branch arm (9) through the other end of Sealed casing pipe (14) by pinning, ball-screw (4) is gone up fixed installation stroke potentiometer (5), each spring assembly (8) upper end fixed connection hole diameter potentiometer (6); The lower end of described Sealed casing pipe (14) connects the backup arm main body; The backup arm main body is two fixing up and down cylindrical shells; Be respectively upper shell (15) and lower shell (17), the upper end of lower shell (17) is at upper shell (15) intracavity bottom, and upper shell (15) enclosure axis is to having 8 open-works; Lower shell (17) upper end is an end of hinged 8 lower branch arms in interval (12) circumferentially; The pole plate arm that is articulated and connected between every the upper branch arm (9) and corresponding lower branch arm (12) other end, pole plate arm are that pole plate (10) connects pole plate passing spool (16), and every upper branch arm (9) and corresponding lower branch arm (12) all pass the open-work of upper shell (15) shell.
2. a kind of eight arm probes that are used on the microresistivity scanning and imaging logging instrument according to claim 1 is characterized in that: described spring assembly (8) is folded spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202795698U CN202194655U (en) | 2011-08-03 | 2011-08-03 | Eight-arm detector for micro-resistivity scanning imaging logging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202795698U CN202194655U (en) | 2011-08-03 | 2011-08-03 | Eight-arm detector for micro-resistivity scanning imaging logging instrument |
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| Publication Number | Publication Date |
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| CN202194655U true CN202194655U (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202795698U Expired - Fee Related CN202194655U (en) | 2011-08-03 | 2011-08-03 | Eight-arm detector for micro-resistivity scanning imaging logging instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979515A (en) * | 2012-12-06 | 2013-03-20 | 武汉海阔科技有限公司 | Storage logging system |
| CN110242274A (en) * | 2019-04-16 | 2019-09-17 | 东营植诚机电技术开发有限公司 | A kind of belly core path resistivity measurement instrument |
| CN112963144A (en) * | 2021-02-02 | 2021-06-15 | 北京中石曙光科技有限公司 | Small-diameter micro-resistivity scanning imager |
| CN114233222A (en) * | 2020-11-26 | 2022-03-25 | 西安振宇电子工程有限公司 | Six-arm sidewall contact device suitable for small-diameter oil well |
-
2011
- 2011-08-03 CN CN2011202795698U patent/CN202194655U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979515A (en) * | 2012-12-06 | 2013-03-20 | 武汉海阔科技有限公司 | Storage logging system |
| CN102979515B (en) * | 2012-12-06 | 2015-06-24 | 武汉海阔科技有限公司 | Storage logging system |
| CN110242274A (en) * | 2019-04-16 | 2019-09-17 | 东营植诚机电技术开发有限公司 | A kind of belly core path resistivity measurement instrument |
| CN110242274B (en) * | 2019-04-16 | 2023-08-29 | 东营植诚机电技术开发有限公司 | Inner core type small-diameter resistivity measuring instrument |
| CN114233222A (en) * | 2020-11-26 | 2022-03-25 | 西安振宇电子工程有限公司 | Six-arm sidewall contact device suitable for small-diameter oil well |
| CN112963144A (en) * | 2021-02-02 | 2021-06-15 | 北京中石曙光科技有限公司 | Small-diameter micro-resistivity scanning imager |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20200803 |
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| CF01 | Termination of patent right due to non-payment of annual fee |