CN103256041A - Hole diameter instrument - Google Patents
Hole diameter instrument Download PDFInfo
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- CN103256041A CN103256041A CN2013101725901A CN201310172590A CN103256041A CN 103256041 A CN103256041 A CN 103256041A CN 2013101725901 A CN2013101725901 A CN 2013101725901A CN 201310172590 A CN201310172590 A CN 201310172590A CN 103256041 A CN103256041 A CN 103256041A
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- hole diameter
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Abstract
The invention provides a hole diameter instrument which comprises a body, a measurement mechanism and a steering mechanism, wherein the measurement mechanism comprises a first measurement component, a second measurement component and an elastic device, the second measurement component and the first measurement component are arranged in an included angle mode, a first end of the first measurement component and a first end of the second measurement component are arranged in the extending direction of the body in a reciprocating movement mode, a second end of the first measurement component is hinged to a second end of the second measurement component, the elastic device is used for driving the first measurement component and the second measurement component to move relative to one another, the steering mechanism is arranged on the body and is in abutting connection with one end, far away from the first measurement component, on the second measurement component, and the steering mechanism is used for detecting change displacement of the second measurement component in the radial direction of the body. The hole diameter instrument is applied, and the purpose of bidirectional well logging by the hole diameter instrument can be achieved through the measurement components and the steering mechanism.
Description
Technical field
The present invention relates to the measurement mechanism field, in particular to a kind of hole diameter instrument.
Background technology
Four arms independently hole diameter instrument are widely used in the oil well logging field, and along with the progress of drilling technology, horizontal well is more and more, and are also more and more to the requirement of hole diameter instrument.In some new logging modes such as memory-type well logging, require gage beam not have driving in order to reduce hole diameter instrument energy consumption, namely all need keep normally open at down-hole upstream or downstream gage beam.Four-arm caliper device of the prior art mostly is that to draw gage beam in back descending, arrives then behind the measuring position under motor-driven gage beam opened to carry out surveying.Though this well arm measure instrument has certain bidirectional-movement function, main purpose is the aboveground survey of adaptation level of short duration descending requirement when changing drilling tool, if long distance is transferred very easily damages.
The structure of hole diameter instrument of the prior art comprises gage beam 1 ', stage clip 2 ' and telescopic arm 3 ' as shown in Figure 1.Above-mentioned gage beam 1 ' one end and apparatus subject are hinged, and an end of the other end and telescopic arm 3 ' is hinged.One end of stage clip 2 ' is arranged on the apparatus subject rotationally, and the other end of stage clip 2 ' is articulated in gage beam 1 ' and upward and for gage beam 1 ' provides backup power.
The shortcoming of prior art: apparatus measures instrument of the prior art needs part such as axostylus axostyle and stage clip 2 ' supporting, also needs to design the space of axostylus axostyle stroke, makes that the overall structure of hole diameter instrument is comparatively complicated.Gage beam 1 ' can not slide during the well logging footpath, can only make the motion mode of hole diameter instrument be restricted to a directional log.
Measuring instrument of the prior art has reduced the opening angle of gage beam in order to reduce the stuck probability of gage beam, and corresponding increase gage beam length is to realize two-way well logging.This mode has not only increased tool length, also can cause the technical problem of the certainty of measurement reduction that causes because opening angle is little.And hole diameter instrument of the prior art force-bearing situation to the right shown in Figure 1 motion the time is poor, still can occur stuck, even the situation of instrument damage.
Summary of the invention
The present invention aims to provide a kind of hole diameter instrument, to reach the purpose that the hole diameter instrument can two-way well logging.
To achieve these goals, the invention provides a kind of hole diameter instrument, comprising: main body; Measuring mechanism, comprise the first measurement assembly, be second measurement assembly and the elastic device that angle is arranged with the first measurement assembly, first end of first end of the first measurement assembly and the second measurement assembly can arrange along the bearing of trend of main body with moving back and forth, second end of second end of the first measurement assembly and the second measurement assembly is hinged, and elastic device is used for driving first and measures assembly and the second measurement assembly move toward one another; Switching mechanism is arranged on the main body, and with second measure on the assembly end butt of measuring assembly away from first, switching mechanism is measured assembly along the radial variations displacement of main body for detection of second.
Further, first measures assembly comprises first gage beam and first element hinged with first end of first gage beam, and first element slidably or rollably arranges along the bearing of trend of main body; Second measures assembly comprises second gage beam and second element hinged with first end of second gage beam, and second element slidably or rollably arranges along the bearing of trend of main body; Second end of first gage beam and second end of second gage beam are hinged.
Further, first element is for the rolling element that rollably arranges along the bearing of trend of main body or for along the bearing of trend of main body slide block slidably; Second element is for the rolling element that rollably arranges along the bearing of trend of main body or for along the bearing of trend of main body slide block slidably.
Further, elastic device is extension spring, and first end of extension spring is connected on first gage beam, and second end of extension spring is connected on second gage beam.
Further, switching mechanism comprises: first linking arm, and the main body of first linking arm and hole diameter instrument is articulated in first pin joint; Second linking arm, second linking arm and main body are articulated in second pin joint; The 3rd linking arm, the 3rd linking arm and first linking arm are articulated in the 3rd pin joint, and the 3rd linking arm and second linking arm are articulated in the 4th pin joint, and second of the 3rd linking arm and hole diameter instrument measured the protruding butt that arranges on the assembly; The 4th linking arm, first end of the 4th linking arm is fixedlyed connected with second linking arm; Potentiometer is with the second end press fit of the 4th linking arm.
Further, second pin joint and the 4th pin joint are on first line, and the crimping point of the tie point of the 4th linking arm and second linking arm and the 4th linking arm and potentiometer is on second line, and first line is vertical mutually with second line.
Further, first pin joint and the 3rd pin joint are on the 3rd line, and first line is parallel to the 3rd line.
Further, the distance between second pin joint and the 4th pin joint is a, and the distance between first pin joint and the 3rd pin joint is b, wherein, and a=b.
Further, the 3rd pin joint and the 4th pin joint are on the 4th line, and the 4th line is parallel with the axis of the main body of hole diameter instrument.
Further, first linking arm is the crank arm of bent axle, and second linking arm and the 4th linking arm constitute conversion sheet jointly, and the 3rd linking arm is for measuring plate.
Use hole diameter instrument of the present invention, by the first measurement assembly and second elastic device of measuring assembly and being used for driving above-mentioned measurement assembly move toward one another that can move back and forth along the bearing of trend of main body is set, measure assembly or second and measure assembly when stressed when first, the first measurement assembly and second is measured assembly and can be moved along the axis direction of main body, thereby has avoided the situation of stuck and discontinuity to take place; When first measures assembly and second and measures assembly and do not stress, measure assembly and second by elastic device pulling first and measure the assembly move toward one another, make the first measurement assembly and second measure assembly and keep outside open state, and then make the hole diameter instrument can reach the purpose of two-way well logging; Further, by switching mechanism is set, can detects second by switching mechanism and measure assembly along the radial variations displacement of main body, avoid other invalid displacements that the measured value of hole diameter instrument is exerted an influence, thereby improve the certainty of measurement of hole diameter instrument.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of hole diameter instrument in the prior art;
Fig. 2 is the structure chart according to hole diameter instrument in the embodiment of the invention;
Fig. 3 is the schematic diagram according to the measuring mechanism of hole diameter instrument in the embodiment of the invention;
Fig. 4 is the A portion enlarged drawing of Fig. 2.
Reference numeral among the figure: 10, main body; 11, first gage beam; 12, second gage beam; 13, first element; 14, second element; 20, elastic device; 40, first linking arm; 51, second linking arm; 52, the 4th linking arm; 60, the 3rd linking arm; 70, balance portion.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
To shown in Figure 4, the embodiment of the invention provides a kind of hole diameter instrument, comprising: main body 10, measuring mechanism and switching mechanism as Fig. 2.Measuring mechanism comprises the first measurement assembly, is second measurement assembly and the elastic device 20 that angle is arranged with the first measurement assembly, first end of first end of the first measurement assembly and the second measurement assembly can arrange along the bearing of trend of main body 10 with moving back and forth, second end of second end of the first measurement assembly and the second measurement assembly is hinged, and elastic device 20 is used for driving first and measures assembly and the second measurement assembly move toward one another.Switching mechanism is arranged on the main body 10, and with second measure on the assembly end butt of measuring assembly away from first, switching mechanism is measured assembly along the radial variations displacement of main body 10 for detection of second.
By the first measurement assembly and second elastic device 20 of measuring assembly and being used for driving above-mentioned measurement assembly move toward one another that can move back and forth along the bearing of trend of main body 10 is set, measure assembly or second and measure assembly when stressed when first, the first measurement assembly and second is measured assembly and can be moved along the axis direction of main body 10, thereby has avoided the situation of stuck and discontinuity to take place.When first measures assembly and second and measures assembly and do not stress, drive first by elastic device 20 and measure assembly and the second measurement assembly move toward one another, make the first measurement assembly and second measure assembly and keep outside open state, and then make the hole diameter instrument can reach the purpose of two-way well logging.
By switching mechanism is set, can detect second by switching mechanism and measure assembly along the radial variations displacement of main body 10, avoid other invalid displacements that the measured value of hole diameter instrument is exerted an influence, thereby improve the certainty of measurement of hole diameter instrument.
As shown in Figures 2 and 3, first measure assembly and comprise first gage beam 11 and slidably or rollably arrange with the bearing of trend of hinged first element, 13, the first elements 13 of first end of first gage beam 11 along main body 10.Second measures assembly comprises second gage beam 12 and second element 14 hinged with first end of second gage beam 12, second element 14 slidably or rollably arranges along the bearing of trend of main body 10, and second end of second end of first gage beam 11 and second gage beam 12 is hinged.
Preferably, the corner dimension between first gage beam 11 or second gage beam 12 and the main body 10 is 0 ° to 41 °, and wherein, the maximum opening angle between first gage beam 11 or second gage beam 12 and the main body 10 can reach 41 °.
Particularly, the rolling element that rollably arranges for the bearing of trend along main body 10 of first element 13 or the slide block that is mounted slidably for the bearing of trend along main body 10.The rolling element that second element 14 rollably arranges for the bearing of trend along main body 10 or the slide block that is mounted slidably for the bearing of trend along main body 10.Wherein, first element 13 and second element 14 can be same structure, also can different structure.
As shown in Figures 2 and 3, main body 10 is provided with sliding tray in the embodiment of the invention, and first element 13 and second element 14 are the slide block that is arranged in the above-mentioned sliding tray.The equal correspondence of first end of first end of first gage beam 11 and second gage beam 12 is articulated on the corresponding slide block, and second end of second end of first gage beam 11 and second gage beam 12 is hinged.Elastic device 20 is for bearing the extension spring of axial tension, and first end of above-mentioned extension spring is connected on first gage beam 11, and second end of elastic device 20 is connected on second gage beam 12.
When work, first gage beam 11 and second gage beam 12 keep outside open state under the effect of extension spring, when hole diameter diminished, first gage beam 11 or second gage beam 12 were stressed, made the hinged end of first gage beam 11 and second gage beam 12 to the direction motion near main body 10.First end of first gage beam 11 and second gage beam 12 is owing to be provided with slide block, thus can move along the bearing of trend of main body 10, thus avoided above-mentioned gage beam situation stuck and discontinuity to take place.
When hole diameter becomes big, the hinged end of first gage beam 11 and second gage beam 12 does not stress, under the effect of extension spring, the first end move toward one another of above-mentioned first gage beam 11 and second gage beam 12, the hinged end of above-mentioned first gage beam 11 and second gage beam 12 outwards open and with borehole wall butt, with the precision of guarantee measuring.
Need to prove that the main body 10 in the embodiment of the invention can be cylindrical structure, measuring mechanism can be for a plurality of, and a plurality of measuring mechanism is circumferentially uniform along main body 10.
As shown in Figure 4, the switching mechanism in the embodiment of the invention comprises: first linking arm 40, second linking arm 51, the 3rd linking arm 60, the 4th linking arm 52 and potentiometer.First linking arm 40 is articulated in first pin joint with the main body 10 of hole diameter instrument.Second linking arm 51 is articulated in second pin joint with main body 10; The 3rd linking arm 60 and first linking arm 40 are articulated in the 3rd pin joint, and the 3rd linking arm 60 and second linking arm 51 are articulated in the 4th pin joint.The 3rd linking arm 60 is measured the protruding butt that arranges on the assembly with second of hole diameter instrument.First end of the 4th linking arm 52 is fixedlyed connected with second linking arm 51.The second end press fit of potentiometer and the 4th linking arm 52 is converted to the signal of telecommunication of potentiometer with the mechanical displacement signal with the gage beam of hole diameter instrument, thereby realizes well logging.Wherein, the projection on the second measurement assembly is arranged at the hinged end of second gage beam 12 and main body 10.
When second gage beam 12 when stressed, second gage beam 12 can be converted to linearly the radial displacement of the 3rd linking arm 60 along radially effective displacement of main body 10, and second gage beam 12 can filter out along the axial invalid displacement of main body 10, make hole diameter instrument that switching mechanism both gone for unidirectional well logging also applicable to the hole diameter instrument of two-way well logging, thereby reach the purpose that improves the switching mechanism versatility.
Second pin joint and the 4th pin joint are on first line, the tie point that the 4th linking arm 52 is fixedlyed connected with second linking arm 51 (in the present embodiment, tie point overlaps with second pin joint) is on second line with the crimping point of the 4th linking arm 52 and potentiometer.Have angle between above-mentioned first line and second line, preferably, first line is vertical mutually with second line, with second linking arm 51 and the 52 L-shaped settings of the 4th linking arm.
Second linking arm 51 and the 4th linking arm 52 are set to orthogonal L type structure, and make the corner of this L shaped structure and aforementioned body 10 hinged.When the 3rd linking arm 60 of switching mechanism moves, can drive 51 motions of second linking arm, rotate around second pin joint thereby drive the 4th linking arm 52, and then push potentiometer, reach the purpose of the output numerical value that changes potentiometer.
Further, first pin joint and the 3rd pin joint are on the 3rd line, and first line is parallel to the 3rd line.Distance between second pin joint and the 4th pin joint is a, and the distance between first pin joint and the 3rd pin joint is b, wherein, and a=b.
Preferably, the 3rd pin joint and the 4th pin joint are on the 4th line, and the 4th line is parallel with the axis of the main body 10 of hole diameter instrument.
Second linking arm 51, main body 10, first linking arm 40 and the 3rd linking arm 60 are surrounded the quadric chain of parallelogram, utilize the rotational characteristic of quadric chain, can either effectively the displacement of second gage beam 12 along main body 10 axis directions be screened out, can not influence second gage beam 12 again will conduct in the switching mechanism along the radial displacement of main body 10, thereby guarantees the measurement precision of hole diameter instrument.
As shown in Figure 4, first linking arm 40 is the crank arm of bent axle, second linking arm 51 and the 4th linking arm 52 common formation conversion sheet, and the 3rd linking arm 60 is for measuring plate.Particularly, second gage beam 12 is provided with circular-arc projection with the hinged end of main body 10, this projection and the butt setting slidably of measurement plate.
Need to prove, potentiometer in the embodiment of the invention comprise the potentiometer connecting rod and with the stage clip of potentiometer connecting rod butt, above-mentioned stage clip applies outside thrust to the potentiometer connecting rod, make potentiometer connecting rod and the 4th linking arm 52 press fit, and the switching mechanism that makes above-mentioned parallelogram is in the state that tilts to away from the direction of above-mentioned potentiometer under situation about not stressing, to guarantee that measuring plate has enough radial motion spaces.
Above-mentioned switching mechanism can be applied to the hole diameter instrument that gage beam is articulated in the unidirectional logging mode on the main body, also can be used for the hole diameter instrument of two-way logging mode.Wherein, when switching mechanism was used for the hole diameter instrument of two-way well logging, the projection that arranges on second gage beam 12 can be slided with respect to the 3rd linking arm 60.Further, also be provided with on the main body 10 for the stressed balance portion 70 of balance embodiment of the invention hole diameter instrument.
The present invention is not limited to above-described embodiment, and for example in a kind of not shown embodiment, elastic device 20 comprises:
Be used for measuring second stage clip that assembly provides first stage clip of thrust and is used for the second measurement assembly is provided thrust to first.First stage clip is arranged at first outside of measuring assembly, and first end of first stage clip is connected with the first measurement assembly, and second end of first stage clip is fixed on the main body 10.Second stage clip is arranged at second outside of measuring assembly, and first end of second stage clip is connected with the second measurement assembly, and second end of second stage clip is fixed on the main body 10.
Measure assembly to first and first stage clip of thrust be provided and measure second stage clip that assembly provides thrust to second by arranging, make first measure assembly and second measure assembly can move toward one another, to realize the purpose of two-way well logging.
In the not shown embodiment of another kind, elastic device 20 comprises:
Be used for measuring second extension spring that assembly provides first extension spring of pulling force and is used for the second measurement assembly is provided pulling force to first.First extension spring is arranged at first inboard of measuring assembly, and first end of first extension spring is connected with the first measurement assembly, and second end of first extension spring is fixed on the main body 10.Second extension spring is arranged at second inboard of measuring assembly, and first end of second extension spring is connected with the second measurement assembly, and second end of second extension spring is fixed on the main body 10.
Need to prove, except above-mentioned feature, more than among two kinds of not shown embodiment the other technologies feature all same with the above-mentioned embodiment.
From above description, as can be seen, the above embodiments of the present invention have realized following technique effect: by the first measurement assembly and second elastic device of measuring assembly and being used for driving above-mentioned measurement assembly move toward one another that can move back and forth along the bearing of trend of main body is set, measure assembly or second and measure assembly when stressed when first, the first measurement assembly and second is measured assembly and can be moved along the axis direction of main body, thereby has avoided the situation of stuck and discontinuity to take place; When first measures assembly and second and measures assembly and do not stress, measure assembly and second by elastic device pulling first and measure the assembly move toward one another, make the first measurement assembly and second measure assembly and keep outside open state, and then make the hole diameter instrument can reach the purpose of two-way well logging; Further, by switching mechanism is set, can detect second measuring mechanism along the radial variations displacement of main body by switching mechanism, avoid other invalid displacements that the measured value of hole diameter instrument is exerted an influence, thereby improve the certainty of measurement of hole diameter instrument.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a hole diameter instrument is characterized in that, comprising:
Main body (10);
Measuring mechanism, comprise the first measurement assembly, be second measurement assembly and the elastic device (20) that angle is arranged with the described first measurement assembly, first end of first end of the described first measurement assembly and the described second measurement assembly can arrange along the bearing of trend of described main body (10) with moving back and forth, second end of second end of the described first measurement assembly and the described second measurement assembly is hinged, and described elastic device (20) is used for driving described first and measures assembly and the described second measurement assembly move toward one another;
Switching mechanism is arranged on the described main body (10), and with described second measure on the assembly end butt of measuring assembly away from described first, described switching mechanism is measured assembly along the radial variations displacement of described main body (10) for detection of described second.
2. hole diameter instrument according to claim 1 is characterized in that,
Described first measures assembly comprises first gage beam (11) and first element (13) hinged with first end of described first gage beam (11), and described first element (13) slidably or rollably arranges along the bearing of trend of described main body (10);
Described second measures assembly comprises second gage beam (12) and second element (14) hinged with first end of described second gage beam (12), and described second element (14) slidably or rollably arranges along the bearing of trend of described main body (10);
Second end of second end of described first gage beam (11) and described second gage beam (12) is hinged.
3. hole diameter instrument according to claim 2 is characterized in that,
Described first element (13) is for the rolling element that rollably arranges along the bearing of trend of described main body (10) or for along the bearing of trend of described main body (10) slide block slidably;
Described second element (14) is for the rolling element that rollably arranges along the bearing of trend of described main body (10) or for along the bearing of trend of described main body (10) slide block slidably.
4. hole diameter instrument according to claim 2 is characterized in that, described elastic device (20) is extension spring, and first end of described extension spring is connected on described first gage beam (11), and second end of described extension spring is connected on described second gage beam (12).
5. hole diameter instrument according to claim 1 is characterized in that, described switching mechanism comprises:
First linking arm (40), described first linking arm (40) is articulated in first pin joint with the main body (10) of described hole diameter instrument;
Second linking arm (51), described second linking arm (51) is articulated in second pin joint with described main body (10);
The 3rd linking arm (60), described the 3rd linking arm (60) is articulated in the 3rd pin joint with described first linking arm (40), described the 3rd linking arm (60) is articulated in the 4th pin joint with described second linking arm (51), and described the 3rd linking arm (60) is measured the protruding butt that arranges on the assembly with second of described hole diameter instrument;
The 4th linking arm (52), first end of described the 4th linking arm (52) is fixedlyed connected with described second linking arm (51);
Potentiometer is with the second end press fit of described the 4th linking arm (52).
6. according to the described hole diameter instrument of claim 5, it is characterized in that, described second pin joint and described the 4th pin joint are on first line, the crimping point of the tie point of described the 4th linking arm (52) and described second linking arm (51) and described the 4th linking arm (52) and described potentiometer is on second line, and described first line is vertical mutually with described second line.
7. according to the described hole diameter instrument of claim 6, it is characterized in that described first pin joint and described the 3rd pin joint are on the 3rd line, described first line is parallel to described the 3rd line.
8. according to each described hole diameter instrument in the claim 5 to 7, it is characterized in that the distance between described second pin joint and described the 4th pin joint is a, the distance between described first pin joint and described the 3rd pin joint is b, wherein, and a=b.
9. according to each described hole diameter instrument in the claim 5 to 7, it is characterized in that described the 3rd pin joint and described the 4th pin joint are on the 4th line, described the 4th line is parallel with the axis of the main body (10) of described hole diameter instrument.
10. according to each described hole diameter instrument in the claim 5 to 7, it is characterized in that, described first linking arm (40) is the crank arm of bent axle, and described second linking arm (51) and described the 4th linking arm (52) constitute conversion sheet jointly, and described the 3rd linking arm (60) is for measuring plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172590.1A CN103256041B (en) | 2013-05-10 | 2013-05-10 | Hole diameter instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172590.1A CN103256041B (en) | 2013-05-10 | 2013-05-10 | Hole diameter instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103256041A true CN103256041A (en) | 2013-08-21 |
| CN103256041B CN103256041B (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310172590.1A Expired - Fee Related CN103256041B (en) | 2013-05-10 | 2013-05-10 | Hole diameter instrument |
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| Country | Link |
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| CN (1) | CN103256041B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183128A (en) * | 2022-01-20 | 2022-03-15 | 武汉海阔科技有限公司 | Single-arm eccentric caliper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3555689A (en) * | 1968-12-19 | 1971-01-19 | Schlumberger Technology Corp | Centralizing and well-calipering apparatus for well tools |
| CN2181565Y (en) * | 1993-09-16 | 1994-11-02 | 大庆石油管理局测井公司 | Microelectrode powered calliper logging device |
| US20020162240A1 (en) * | 2000-11-01 | 2002-11-07 | Baker Hughes Incorporated | Use of magneto-resistive sensors for borehole logging |
| RU2299969C2 (en) * | 2002-03-13 | 2007-05-27 | Шлюмбергер Текнолоджи Б.В. | Executive mechanism acting with constant force |
| CN101029566A (en) * | 2007-04-13 | 2007-09-05 | 陈耕 | Reciprocating multi-testing arm well diameter tester |
| CN201053316Y (en) * | 2007-06-29 | 2008-04-30 | 四川石油管理局测井公司 | Four-arm separation type borehole diameter logger |
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2013
- 2013-05-10 CN CN201310172590.1A patent/CN103256041B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3555689A (en) * | 1968-12-19 | 1971-01-19 | Schlumberger Technology Corp | Centralizing and well-calipering apparatus for well tools |
| CN2181565Y (en) * | 1993-09-16 | 1994-11-02 | 大庆石油管理局测井公司 | Microelectrode powered calliper logging device |
| US20020162240A1 (en) * | 2000-11-01 | 2002-11-07 | Baker Hughes Incorporated | Use of magneto-resistive sensors for borehole logging |
| RU2299969C2 (en) * | 2002-03-13 | 2007-05-27 | Шлюмбергер Текнолоджи Б.В. | Executive mechanism acting with constant force |
| CN101029566A (en) * | 2007-04-13 | 2007-09-05 | 陈耕 | Reciprocating multi-testing arm well diameter tester |
| CN201053316Y (en) * | 2007-06-29 | 2008-04-30 | 四川石油管理局测井公司 | Four-arm separation type borehole diameter logger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183128A (en) * | 2022-01-20 | 2022-03-15 | 武汉海阔科技有限公司 | Single-arm eccentric caliper |
| CN114183128B (en) * | 2022-01-20 | 2024-04-19 | 武汉海阔科技有限公司 | Single-arm eccentric caliper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103256041B (en) | 2016-02-10 |
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