CN103821503A - Device capable of recovering probe and for through casing resistivity logging instrument - Google Patents
Device capable of recovering probe and for through casing resistivity logging instrument Download PDFInfo
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- CN103821503A CN103821503A CN201410063229.XA CN201410063229A CN103821503A CN 103821503 A CN103821503 A CN 103821503A CN 201410063229 A CN201410063229 A CN 201410063229A CN 103821503 A CN103821503 A CN 103821503A
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- probe
- casing
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- logging instrument
- resistivity logging
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Abstract
The invention provides a device capable of recovering a probe and for a through casing resistivity logging instrument. The device is composed of a probe head, a coiled probe pin, a probe connecting rod, a small spring, an inner shell, a large spring, a pre-tightening nut, an outer shell, a bottom plate, a coiled fastening pin and the like. When the through casing resistivity logging instrument breaks down and cannot be recover the probe normally, the logging instrument only needs to be lifted upwards, under the effect of the pulling force, the probe head topples downwards in a rotating mode around the coiled probe pin and is separated from the inner wall of a casing smoothly, and therefore the problems that the probe head is struck and vicious damage to the casing is caused are avoided. The device can be firmly arranged on the casing in a tying mode and guarantee the accuracy of measuring signals. The device is integrated and simple in structure and can be assembled on, disassembled from and replaced on the through casing resistivity logging instrument conveniently.
Description
Technical field
The present invention relates to the recoverable probe unit that a kind of petroleum industry is used, relating in particular to is a kind of recoverable probe unit for through casing resistivity logging instrument.
Background technology
Through casing resistivity logging has been broken through the restriction that metal sleeve is measured formation resistivity for a long time, and investigation depth is large, can in the stratum of low-porosity, low formation water salinity, apply, for oil and gas development and dynamic monitoring provide a kind of new, effectively logging method.
Application publication number is that CN103225507A discloses a kind of oil well logging instrument mechanical type pushing device, this inventive point is its mechanical pushing device design, but about the withdrawal problem of probe, this patent only mentions that probe can guarantee the accuracy of measuring under backup effect, but still unresolved logging instrument is in the time that underground logging breaks down, the problem that probe and sleeve pipe depart from.
Summary of the invention
The object of this invention is to provide a kind of recoverable probe unit for through casing resistivity logging instrument, having solved existing through casing resistivity logging instrument breaks down at underground logging, backup mechanism can not normally regain, the defect that causes electrode catheter not depart from smoothly with internal surface of sleeve pipe; A kind of insulating Design is provided simultaneously, and can have made probe firmly prick on sleeve pipe, guaranteed the accuracy of measuring-signal.
The present invention is that the technical scheme that solves the problems of the technologies described above employing is:
For a recoverable probe unit for through casing resistivity logging instrument, this device is made up of probe, probe volume pin, probe connecting rod, little spring, inner casing, big spring, pre-load nut, shell, base plate, fastening volume pin etc.Described probe small end is rolled up pin by probe and is articulated with one with probe; Between described inner casing upper end cover and pre-load nut, be provided with a little spring being applied on probe connecting rod; Between described inner casing and shell, be provided with big spring; Described big spring upper surface is supporting the upper end of inner casing, and lower surface abuts against the base plate being connected on shell.
The invention has the advantages that:
1, break down can not normally regain backup mechanism time at through casing resistivity logging instrument, realize the smooth withdrawal of probe, make probe depart from tube wall, thereby realize the smooth recovery of fault instrument.
2, this device is under the effect of large and small spring, and it is vertical making probe always, and can separate by inner casing (PEEK insulation materials) insulation around.
3, this retracting device is simple in structure, is convenient to install, dismantles and changes.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the top view of apparatus of the present invention.
Fig. 3 is the sectional view of apparatus of the present invention.
In figure, 1, probe, 2, probe volume pin, 3, probe connecting rod, 4, little spring, 5, inner casing, 6, big spring, 7, pre-load nut, 8, shell, 9, base plate, 10, fastening volume pin, 11, assembling locating surface, 12, location small boss, 13, pilot hole, 14, flange platform, 15, locating surface is installed, 16, cable-through hole, 17, connector lug.
The specific embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of device of recoverable probe in the time of fault being arranged in through casing resistivity logging instrument backup mechanism.Described probe connecting rod 3 upper ends are rolled up pin 2 by probe and are articulated with one with probe 1, and probe 1 can be toppled over towards set direction rotation around probe volume pin 2, and probe connecting rod 3 can drive probe 1, probe volume pin 2 to move up and down in inner casing 5 pilot holes.Be provided with the installing hole of through hole as probe volume pin 2 in the bottom of probe 1, one end of through hole is as assembling locating surface 11; Between described inner casing 5 upper end covers and pre-load nut 7, be provided with a little spring 4 being applied on probe connecting rod 3, can in shell 8 cavitys, move up and down together with probe 1, probe volume pin 2, probe connecting rod 3, little spring 4, pre-load nut 7; Between described inner casing 5 and shell 8, be provided with big spring 6; Described big spring 6 upper surfaces are supporting the upper end of inner casing 5, and lower surface abuts against the base plate 9 being connected on shell 8, and between described base plate 9, shell 8, Inner shell 5, probe connecting rod 3, probe 1, nothing relatively rotates.
Described probe 1, its material is wear-resisting carbide alloy, main body is the composite unit structure of circular cone and cylinder.Be provided with a through hole in the bottom of probe, as the installing hole of probe volume pin 2; One end of through hole is provided with the plane that is milled into certain depth, as its assembling locating surface 11, and when coordinating with the cuboid small boss of inner casing upper surface, thus the uniqueness in orientation while guaranteeing probe is installed; At the center position of probe bottom, be provided with the straight trough that runs through of parallel with a milling plane width and Depth determination, for coordinating probe connecting rod; One side of probe bottom is provided with an inclination arc surface, its center of circle in through hole in the heart, make like this to break down can not normally regain backup mechanism time at through casing resistivity logging instrument, under the upper effect of carrying logging instrument pulling force, probe can be around probe volume pin rotary dumping, realize the fault withdrawal of probe, thereby realize the disengaging of probe and internal surface of sleeve pipe, avoid the stuck problem occurring while carrying fault instrument and the pernicious destruction that sleeve pipe is caused.
Described probe connecting rod 3, its main body profile is a up big and down small frustum cone structure.Be provided with a through hole in the center of probe connecting rod 3 the first half, and be provided with in both sides and be milled into certain depth and all perpendicular to the plane of circular hole, they are when coordinating with probe 1 and probe volume pin 2; Top at probe connecting rod 3 is provided with arc surface, to avoid the probe interference in when rotation; Be provided with by threaded engagement and play the pre-load nut 7 of pretension little spring pre-compression force in the latter half of probe connecting rod 3, and its lowermost end is provided with the connector lug 17 of being convenient to welding lead.
Described probe volume pin 2 be conductance by force, good springiness and corrosion resistant volume pin, due to its effect, can allow probe around probe volume pin rotary dumping, also can allow probe 1, probe volume pin 2 fully contact with probe connecting rod 3 threes, guarantee the stable delivery of measuring-signal.
Described Inner shell 5, its main body is the cylindrical structure with upper end cover, and it is PEEK material high temperature resistant, insulation, so make probe 1, probe volume pin 2 and probe connecting rod 3 these threes can be fully and outside separate, the signal that assurance probe 1 collects, directly via the wire transmission of probe connecting rod bottom, avoids suffering unnecessary interference.Be provided with a pilot hole 13 for probe connecting rod guiding in inner casing upper end cover center; At the outer place of inner casing upper end cover, be provided with radially overhanging cylindrical boss, its overhanging diameter is larger and be resisted against the upper end surface of shell than the external diameter of cylindrical tube; On one side of circular cylindrical projection edge of table, be provided with a cuboid location small boss 12 of being convenient to determine probe installation position.Between inner casing upper end cover and pre-load nut 7, be provided with a compression little spring 4 being applied on probe connecting rod 3, under normal circumstances, its restoring force impels probe always in vertical duty.
Described shell 8, its main body is the cylindrical structure with upper end cover.Be provided with circle and a rectangular combination bore of being convenient to run through inner casing and definite inner casing installation position in shell upper end cover center; The bottom of shell is flange-type structure, and is provided with the through hole of four mounting screws.
Described base plate 9 is certain thickness circular slab, its center is provided with a cable-through hole 16 of being convenient to pass through wire, and edge is provided with the through hole of an installation locating surface 15 corresponding with shell flange platform 14 and three fastening volume pins of installation, load onto after fastening volume pin 10, probe unit just can be used as an entirety, at random in the backup mechanism of through casing resistivity logging instrument, mounts and dismounts; In the annular space between inner casing and shell, be provided with the big spring of a compression, its upper surface is supporting the upper end of inner casing, and lower surface is resisted against on the base plate that is connected in shell.The normal pressure acting on probe when internal surface of sleeve pipe increases gradually, probe drive probe volume pin 2, probe connecting rod 3, little spring 4, pre-load nut 7 certain distance that bounces back together with inner casing 5 of extruding, until retract to their extreme position, finally will bear superfluous active force by the roller in backup mechanism.So, not only effectively guarantee that probe 1 meets minimum requirements to the normal pressure of internal surface of sleeve pipe, and can effectively prevent the probe unit squeeze and destroy causing because normal pressure is excessive.
Those skilled in the art is not departing under the condition of the definite the spirit and scope of the present invention of claims, can also carry out various modifications to above content.Therefore scope of the present invention is not limited in above explanation, but determined by the scope of claims.
Claims (10)
1. the recoverable probe unit for through casing resistivity logging instrument, comprise probe (1), probe volume pin (2), probe connecting rod (3), inner casing (5), shell (8), base plate (9), it is characterized in that: described probe connecting rod (3) upper end is rolled up pin (2) by probe and is articulated with one with probe (1); Between described inner casing (5) upper end cover and pre-load nut (7), be provided with a little spring (4) being applied on probe connecting rod (3); Between described inner casing (5) and shell (8), be provided with big spring (6); Described big spring (6) upper surface is supporting the upper end of inner casing (5), and lower surface abuts against the base plate (9) being connected on shell (8).
2. a kind of recoverable probe unit for through casing resistivity logging instrument according to claim 1, is characterized in that: described probe (1) is the composite unit structure of circular cone and cylinder.
3. probe according to claim 2 (1), is characterized in that: the bottom at probe (1) is provided with through hole, and one end of through hole is as assembling locating surface (11), and described through hole is the installing hole of probe volume pin (2).
4. a kind of recoverable probe unit for through casing resistivity logging instrument according to claim 1, is characterized in that: described probe connecting rod (3) is up big and down small frustum cone structure.
5. probe connecting rod according to claim 4 (3), is characterized in that: the top of described probe connecting rod be both sides by the plane of milling, and top is circular arc; Bottom is provided with the pre-load nut (7) by threaded engagement; Lowermost end is the connector lug (17) of welding lead.
6. a kind of recoverable probe unit for through casing resistivity logging instrument according to claim 1, is characterized in that: described Inner shell (5) is the seal with upper end cover column structure.
7. inner casing according to claim 6 (5), is characterized in that: there is a pilot hole (13) described inner casing upper end cover center; The outer place of described inner casing upper end cover is radially overhanging cylindrical boss; The overhanging diameter of described cylindrical boss is larger than the external diameter of described inner casing cylindrical tube; On one side of circular cylindrical projection edge of table, there is a cuboid location small boss (12).
8. a kind of recoverable probe unit for through casing resistivity logging instrument according to claim 1, is characterized in that: described shell (8) is the cylindrical structure with upper end cover.
9. shell according to claim 8 (8), is characterized in that: there are a circle and rectangular combination bore in described shell upper end cover center; Described shell bottom is flange platform (14), and is set to install locating surface (15) on one side of flange platform, and edge arranges the through hole that fastening volume pin (10) is installed.
10. a kind of recoverable probe unit for through casing resistivity logging instrument according to claim 1, it is characterized in that: described base plate (9) is certain thickness circular slab, center is provided with one and passes through the cable-through hole (16) that wire is used, and there be the installation locating surface (15) corresponding with shell (8) flange platform (14) in edge and the through hole of fastening volume pin (10) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063229.XA CN103821503B (en) | 2014-02-25 | 2014-02-25 | A kind of recoverable probe unit in through casing resistivity logging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063229.XA CN103821503B (en) | 2014-02-25 | 2014-02-25 | A kind of recoverable probe unit in through casing resistivity logging instrument |
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| Publication Number | Publication Date |
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| CN103821503A true CN103821503A (en) | 2014-05-28 |
| CN103821503B CN103821503B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410063229.XA Expired - Fee Related CN103821503B (en) | 2014-02-25 | 2014-02-25 | A kind of recoverable probe unit in through casing resistivity logging instrument |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007120072A1 (en) * | 2006-04-18 | 2007-10-25 | Limited Liability Company 'interlog' | Electrical cased well-logging method |
| 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 |
| CN202391410U (en) * | 2011-12-18 | 2012-08-22 | 西安思坦仪器股份有限公司 | Leather bag |
| CN102749653A (en) * | 2012-07-30 | 2012-10-24 | 山东大学 | Electrode transmission device for high-resolution three-dimensional (3D) CT (computerized tomography) imaging in underground engineering |
| CN202771011U (en) * | 2012-06-27 | 2013-03-06 | 中国石油集团长城钻探工程有限公司 | Through-casing resistivity electrode probe |
| CN203175533U (en) * | 2012-12-31 | 2013-09-04 | 中国石油集团长城钻探工程有限公司 | Electrode pushing device of through-casing resistivity and energy compensating hydraulic cylinder thereof |
| CN203769768U (en) * | 2014-02-25 | 2014-08-13 | 北京石大华旭建邦石油科技有限公司 | Device capable of retracting probe and used in through casing resistivity logging tool |
-
2014
- 2014-02-25 CN CN201410063229.XA patent/CN103821503B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007120072A1 (en) * | 2006-04-18 | 2007-10-25 | Limited Liability Company 'interlog' | Electrical cased well-logging method |
| CN202391410U (en) * | 2011-12-18 | 2012-08-22 | 西安思坦仪器股份有限公司 | Leather bag |
| 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 |
| CN202771011U (en) * | 2012-06-27 | 2013-03-06 | 中国石油集团长城钻探工程有限公司 | Through-casing resistivity electrode probe |
| CN102749653A (en) * | 2012-07-30 | 2012-10-24 | 山东大学 | Electrode transmission device for high-resolution three-dimensional (3D) CT (computerized tomography) imaging in underground engineering |
| CN203175533U (en) * | 2012-12-31 | 2013-09-04 | 中国石油集团长城钻探工程有限公司 | Electrode pushing device of through-casing resistivity and energy compensating hydraulic cylinder thereof |
| CN203769768U (en) * | 2014-02-25 | 2014-08-13 | 北京石大华旭建邦石油科技有限公司 | Device capable of retracting probe and used in through casing resistivity logging tool |
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| CN103821503B (en) | 2016-09-14 |
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