CN102926740A - Hydraulic sidewall contact device for through casing resistivity logger - Google Patents
Hydraulic sidewall contact device for through casing resistivity logger Download PDFInfo
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- CN102926740A CN102926740A CN2012104591622A CN201210459162A CN102926740A CN 102926740 A CN102926740 A CN 102926740A CN 2012104591622 A CN2012104591622 A CN 2012104591622A CN 201210459162 A CN201210459162 A CN 201210459162A CN 102926740 A CN102926740 A CN 102926740A
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Abstract
The invention discloses a hydraulic sidewall contact device for a through casing resistivity logger, which mainly solves the problem that the available hydraulic sidewall contact device for the through-casing resistivity logger outputs power radially so that the logger is large in external diameter and complicated in structure. The hydraulic sidewall contact device is characterized in that a ball screw (7) is connected with the front end of a ball screw input shaft (4); a strip-shaped groove is formed on a sidewall of a bush (21); a left limit switch and a right limit switch (5 and 9) are fixed at the left end and the right end of the groove; a ball screw output shaft (10) and a plunger pump (19) are connected with the front end of the ball screw (7) sequentially; a piston (14) is placed in a piston cylinder (15); a piston rod (12) is connected with the left end of the piston (14); and the piston rod (12) is matched with a gear (2) on a measuring electrode (23) by a rack (15). The hydraulic sidewall contact device for the through-casing resistivity logger axially outputs, and the logger is small in external diameter, simple in structure, high in reliability and convenient to maintain.
Description
Technical field
The present invention relates to the field, oil field, especially a kind of through casing resistivity logging instrument hydraulic pressure pushing device.
Background technology
In the down-hole, resistivity tool is the instrument of commonly using, the most frequently used through casing resistivity logging instrument is CHFR and the Russian geophysics prospecting Э К О С-31-7 of company of Schlumberger company in the market, the hydraulic pressure pushing device of these two kinds of instruments is radially power output, make the instrument external diameter large, range of application is little, complex structural designs, maintenance is inconvenient, and reliability is unstable.Up to the present yet there are no document and the material object of the through casing resistivity logging instrument hydraulic pressure pushing device that effectively addresses the above problem.
Summary of the invention
, the hydraulic pressure pushing device power that overcomes existing through casing resistivity logging instrument makes large, the baroque deficiency of instrument external diameter for radially exporting, the invention provides a kind of through casing resistivity logging instrument hydraulic pressure pushing device, this through casing resistivity logging instrument hydraulic pressure pushing device is axial power output, the instrument external diameter is little, simple in structure, reliability is high, be convenient to maintenance.
Technical scheme of the present invention is: a kind of through casing resistivity logging instrument hydraulic pressure pushing device, comprise direct current generator, piston rod, urceolus, the motor output shaft of described direct current generator front end connects the ball-screw power shaft by yielding coupling, described ball-screw power shaft is supported by the lining that places urceolus inside, be connected by connecting cylinder between described urceolus and the piston rod, described ball-screw power shaft front end connects ball-screw, be fixed with positive stop on the described ball-screw, have the strip groove on the described lining sidewall, the two ends, the left and right sides of groove are fixed with respectively the left limit switch, the right limit switch, the ball-screw front end is connected with the leading screw output shaft, and leading screw output shaft front end is connected with plunger displacement pump;
Described piston rod is built-in with piston, and piston is divided into hydraulic pressure cavity of resorption and hydraulic pressure epicoele with piston rod, and has the second hydraulic tube to be communicated with the right chamber of plunger displacement pump in the hydraulic pressure cavity of resorption, has the first hydraulic tube to be communicated with the left chamber of plunger displacement pump in the hydraulic pressure epicoele;
The left end of described piston is connected with piston rod, is processed with tooth bar on the piston rod sidewall, and piston rod matches with gear on the measurement electrode by tooth bar.
Be fixed with feed screw nut on the described endoporus, ball-screw matches with feed screw nut.
Be connected with differential manometer on described the second hydraulic tube.
The present invention has following beneficial effect: owing to take such scheme, adopt direct current generator to do power source, be convenient to control, use plunger displacement pump by the forward and reverse motion of hydraulic oil pushing piston, and by the cooperating of piston rod and electrode, axial force is converted to radial load, electrode is pushed against on the borehole wall, dwindled the external diameter, simple and compact for structure, easy to maintenance of instrument, good reliability.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the enlarged drawing at I place among Fig. 1;
Fig. 3 is schematic diagram of the present invention.
1-direct current generator among the figure, 2-motor output shaft, 3-yielding coupling, 4-ball-screw power shaft, 5-left limit switch, the 6-positive stop, 7-ball-screw, 8-feed screw nut, 9-right limit switch, 10-leading screw output shaft, 11-the first hydraulic tube, 12-piston rod, 13-hydraulic pressure cavity of resorption, the 14-piston, 15-piston rod, 16-hydraulic pressure epicoele, 17-the second hydraulic tube, the 18-difference gauge, 19-plunger displacement pump, 20-urceolus, 21-lining, the 22-connecting cylinder, 23-measurement electrode, 24-gear, 25-tooth bar.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
By Fig. 1, shown in Figure 2, a kind of through casing resistivity logging instrument hydraulic pressure pushing device comprises direct current generator 1, piston rod 15, urceolus 20, is connected by connecting cylinder 22 between described urceolus 20 and the piston rod 15, there is lining 21 urceolus 20 inside, and direct current generator 1 is fixed on urceolus 20 inside.The motor output shaft 2 of described direct current generator 1 front end connects ball-screw power shaft 4 by yielding coupling 3, and described ball-screw power shaft 4 is by the bearings that places on the lining 21.Described ball-screw power shaft 4 front ends connect ball-screw 7, and the middle part of described ball-screw 7 is fixed with positive stop 6, and ball-screw 7 front ends are connected with leading screw output shaft 10, and leading screw output shaft 10 front ends are connected with plunger displacement pump 19; Be fixed with feed screw nut 8 on described lining 21 endoporus, ball-screw 7 is supported by feed screw nut 8, and the two matches, and has the strip groove on lining 21 sidewalls, and the two ends, the left and right sides of groove are fixed with respectively left limit switch 5, right limit switch 9.
Described piston rod 15 is built-in with piston 14, piston 14 is divided into hydraulic pressure cavity of resorption 13 and hydraulic pressure epicoele 16 with piston rod 15, and there is the second hydraulic tube 17 to be communicated with the right chamber of plunger displacement pump 19 in the hydraulic pressure cavity of resorption 13, there is the first hydraulic tube 11 to be communicated with the left chamber of plunger displacement pump 19 in the hydraulic pressure epicoele 16, and is connected with differential manometer 18 on the second hydraulic tube 17.The left end of described piston 14 is connected with piston rod 12, be processed with tooth bar 25 on piston rod 12 sidewalls, piston rod 12 matches with gear 24 on the measurement electrode 23 by tooth bar 15, piston 14 move left and right can drive piston rod 12 and move, by engagement drive measurement electrode 23 rotations of tooth bar 15 with gear 24, thereby electrode 23 ends are pushed against on the borehole wall.It is uniform that same circumference can connect 23, three measurement electrode 23 of three measurement electrode on the piston rod 12, is meshed with tooth bar 23 by gear 24 respectively.
The piston rod 15 of this device and piston 14, piston rod 12 can be two covers, link to each other with plunger displacement pump 19 by different hydraulic tubes respectively, all are connected with three electrodes on each piston rod 12, then six electrodes all can be pushed against on the borehole wall when plunger displacement pump 19 moves.
Before the work of the present invention, adopt the mode that vacuumizes to fill with hydraulic oil in plunger displacement pump 19, the first hydraulic tube 11, the second hydraulic tube 17, the piston rod 15.Be elaborated below in conjunction with 3 pairs of courses of work of the present invention of accompanying drawing.
When this device is released measurement electrode 20 work, at first, give direct current generator 1 confession-70V direct current, direct current generator 1 is by counterclockwise doing circular-rotation, driving the yielding coupling 3 that is attached thereto by motor output shaft 2 rotates, transmit motion to ball-screw power shaft 4 by yielding coupling 3 again, this motion is through positive stop 6, ball-screw 7, feed screw nut 8 is changed, be transformed into axially-movable by radially circular motion, pass out left thrust by leading screw output shaft 10, this thrust is started working plunger displacement pump 19, and plunger displacement pump 19 utilizes the second hydraulic tube 17 to carry out transmission of power, makes the hydraulic pressure cavity of resorption 13 interior hydraulic oil of piston rod 15 produce thrust left, this thrust pushing piston 14, and then drive piston rod 12 to left movement, rotate by tooth bar 25 driven gears 24, thereby electrode 23 is pushed against on the borehole wall.Plunger displacement pump 19 can promote simultaneously six pistons and moves simultaneously in the present invention, namely give direct current generator 1 confession-70V direct current after, produce simultaneously the power output source of six equivalences, it is close to the measured borehole wall while to promote six groups of measurement electrode 23.Meanwhile, observe the variation of the force value that the variation of motor supply current and difference gauge 18 upload through circuit at ground installation, when the motor supply current becomes suddenly large, the force value of difference gauge 18 also increases thereupon, show that the measurement electrode that is pushed has leaned against on the tested borehole wall, continuation is to direct current generator 1 power supply, when ground observation to the force value of difference gauge 18 when reaching desired a certain fixed value, determine that measurement electrode 23 obtains desired pressure, show that measurement electrode 23 firmly contacts with the measured borehole wall, at this moment give direct current generator 1 outage, the state that keeps measurement electrode this moment firmly to contact with the tested borehole wall by the Measuring Time requirement, the present invention finishes the work of releasing measurement electrode, and the through casing resistivity logging instrument then carries out the work of lower pacing amount.If the present invention is when carrying out this work, ground observation to the force value of difference gauge 18 fail to increase gradually on request, show that then there is leakage problem in this device, need to keep in repair this device.
Finish the surveying work of this point at the through casing resistivity logging instrument after, when the present invention regains measurement electrode work, at first, give direct current generator 1 confession+70V direct current, direct current generator 1 is done circular-rotation in the direction of the clock, driving the yielding coupling 3 that is attached thereto by motor output shaft 2 rotates, transmit motion to ball-screw power shaft 4 by yielding coupling 3 again, this motion is through limit switch block 6, ball-screw 7, feed screw nut 8 is changed, be transformed into axially-movable by radially circular motion, pass out to the right pulling force by leading screw output shaft 10, this pulling force is started working plunger displacement pump 19, plunger displacement pump 19 utilizes the first hydraulic tube 11 to carry out transmission of power, make the hydraulic pressure epicoele 16 interior hydraulic oil of piston rod 15 produce thrust to the right, this thrust pushing piston 14, and then drive piston rod 12 moves right, produce an outputting power that moves right, this power can spur the inner withdrawal from the measured borehole wall to this device of one group of measurement electrode 23.The power output source of namely producing simultaneously six equivalences for direct current generator 1 confession+70V direct current spurs simultaneously inner withdrawal the from the measured borehole wall to this device of six groups of measurement electrode 23.Meanwhile, observe the variation of the force value that the variation of motor supply current and difference gauge 18 upload through circuit at ground installation, when positive stop 6 with after right limit switch 9 contacts, the supply current of direct current generator 1 makes zero, measurement electrode is recovered to inside of the present invention.Simultaneously, the force value of difference gauge 18 also reduces gradually, and it is constant then to change to a fixed value, shows that there is not leakage situation in inside of the present invention.So far, the present invention finishes the task that once release for measurement electrode and withdrawal provide power source.
Claims (3)
1. through casing resistivity logging instrument hydraulic pressure pushing device, comprise direct current generator (1), piston rod (15), urceolus (20), the motor output shaft (2) of described direct current generator (1) front end connects ball-screw power shaft (4) by yielding coupling (3), described ball-screw power shaft (4) is by placing the inner lining (21) of urceolus (20) to support, be connected by connecting cylinder (22) between described urceolus (20) and the piston rod (15), it is characterized in that:
Described ball-screw power shaft (4) front end connects ball-screw (7), be fixed with positive stop (6) on the described ball-screw (7), have the strip groove on described lining (21) sidewall, the two ends, the left and right sides of groove are fixed with respectively left limit switch (5), right limit switch (9), ball-screw (7) front end is connected with leading screw output shaft (10), and leading screw output shaft (10) front end is connected with plunger displacement pump (19);
Described piston rod (15) is built-in with piston (14), piston (14) is divided into hydraulic pressure cavity of resorption (13) and hydraulic pressure epicoele (16) with piston rod (15), and there is the second hydraulic tube (17) to be communicated with the right chamber of plunger displacement pump (19) in the hydraulic pressure cavity of resorption (13), has the first hydraulic tube (11) to be communicated with the left chamber of plunger displacement pump (19) in the hydraulic pressure epicoele (16);
The left end of described piston (14) is connected with piston rod (12), is processed with tooth bar (25) on piston rod (12) sidewall, and piston rod (12) matches with gear (2) on the measurement electrode (23) by tooth bar (15).
2. through casing resistivity logging instrument hydraulic pressure pushing device according to claim 1, it is characterized in that: be fixed with feed screw nut (8) on described (21) endoporus, ball-screw (7) matches with feed screw nut (8).
3. through casing resistivity logging instrument hydraulic pressure pushing device according to claim 2 is characterized in that: be connected with differential manometer (18) on described the second hydraulic tube (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459162.2A CN102926740B (en) | 2012-11-15 | 2012-11-15 | Hydraulic sidewall contact device for through casing resistivity logger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210459162.2A CN102926740B (en) | 2012-11-15 | 2012-11-15 | Hydraulic sidewall contact device for through casing resistivity logger |
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| Publication Number | Publication Date |
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| CN102926740A true CN102926740A (en) | 2013-02-13 |
| CN102926740B CN102926740B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210459162.2A Active CN102926740B (en) | 2012-11-15 | 2012-11-15 | Hydraulic sidewall contact device for through casing resistivity logger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821497A (en) * | 2014-03-04 | 2014-05-28 | 西安石油大学 | Electrode telescoping ram |
| CN109555478A (en) * | 2018-11-14 | 2019-04-02 | 邹城兖矿泰德工贸有限公司 | Guide pipe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1601997A (en) * | 1978-05-16 | 1981-11-04 | Nat Res Dev | Remote-controlled apparatus |
| US4432143A (en) * | 1982-03-22 | 1984-02-21 | Dresser Industries, Inc. | Well logging apparatus |
| CN2455932Y (en) * | 2000-11-08 | 2001-10-24 | 邹德富 | Program controlled valve for determining downhole water layer and oil layer |
| CN201148865Y (en) * | 2007-11-27 | 2008-11-12 | 中国石油天然气集团公司 | Ultrasonic imaging logging tool |
| CN101424183A (en) * | 2007-10-30 | 2009-05-06 | 杨志高 | Density graduation apparatus with automatic hydraulic sidewall contact device |
| CN201391311Y (en) * | 2009-04-17 | 2010-01-27 | 中国石油天然气集团公司 | Adaptive reducing backup device |
| CN201747356U (en) * | 2010-07-30 | 2011-02-16 | 西安威盛电子仪器有限公司 | Motor driven wheel type downhole creeper |
-
2012
- 2012-11-15 CN CN201210459162.2A patent/CN102926740B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1601997A (en) * | 1978-05-16 | 1981-11-04 | Nat Res Dev | Remote-controlled apparatus |
| US4432143A (en) * | 1982-03-22 | 1984-02-21 | Dresser Industries, Inc. | Well logging apparatus |
| CN2455932Y (en) * | 2000-11-08 | 2001-10-24 | 邹德富 | Program controlled valve for determining downhole water layer and oil layer |
| CN101424183A (en) * | 2007-10-30 | 2009-05-06 | 杨志高 | Density graduation apparatus with automatic hydraulic sidewall contact device |
| CN201148865Y (en) * | 2007-11-27 | 2008-11-12 | 中国石油天然气集团公司 | Ultrasonic imaging logging tool |
| CN201391311Y (en) * | 2009-04-17 | 2010-01-27 | 中国石油天然气集团公司 | Adaptive reducing backup device |
| CN201747356U (en) * | 2010-07-30 | 2011-02-16 | 西安威盛电子仪器有限公司 | Motor driven wheel type downhole creeper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821497A (en) * | 2014-03-04 | 2014-05-28 | 西安石油大学 | Electrode telescoping ram |
| CN109555478A (en) * | 2018-11-14 | 2019-04-02 | 邹城兖矿泰德工贸有限公司 | Guide pipe |
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| Publication number | Publication date |
|---|---|
| CN102926740B (en) | 2015-07-01 |
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