CN103821503B - A kind of recoverable probe unit in through casing resistivity logging instrument - Google Patents
A kind of recoverable probe unit in through casing resistivity logging instrument Download PDFInfo
- Publication number
- CN103821503B CN103821503B CN201410063229.XA CN201410063229A CN103821503B CN 103821503 B CN103821503 B CN 103821503B CN 201410063229 A CN201410063229 A CN 201410063229A CN 103821503 B CN103821503 B CN 103821503B
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- Prior art keywords
- probe
- shell
- logging instrument
- resistivity logging
- connecting rod
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Abstract
The present invention provides a kind of recoverable probe unit in through casing resistivity logging instrument, this device is made up of probe, probe volume pin, probe connecting rod, little spring, inner shell, big spring, pre-load nut, shell, base plate, fastening volume pin etc., serve as casing resistivity logging instrument to break down, when normally can not regain probe, only need to carry on direct for logging instrument, under the effect of this pulling force, probe will sell to lower rotary dumping around probe volume, depart from smoothly with internal surface of sleeve pipe, thus avoid the occurrence of stuck problem and the pernicious destruction that sleeve pipe is caused.This device can firmly be pricked on sleeve pipe, it is ensured that measures the accuracy of signal；This device has a style of one's own and simple in construction, it is simple to installs, dismantle and changes on through casing resistivity logging instrument.
Description
Technical field
The present invention relates to the recoverable probe unit that a kind of petroleum industry uses, it is a kind of for mistake for particularly relating to
Recoverable probe unit in casing resistivity logging instrument.
Background technology
Through casing resistivity logging breaches the restriction that formation resistivity is measured by metal canula for a long time, and
Investigation depth is big, can low-porosity, low formation water salinity stratum in apply, for oil and gas development with dynamic
State monitoring provides a kind of new, effective logging method.
Application publication number is that CN103225507A discloses a kind of oil well logging instrument mechanical type pushing device, this
Inventive point is that its mechanical pushing device designs, but about the withdrawal problem of probe, this patent is only
Mention that probe can guarantee that the accuracy of measurement under backup effect, but the most unresolved logging instrument is in down-hole
When well logging is broken down, the problem that probe departs from sleeve pipe.
Summary of the invention
It is an object of the invention to provide a kind of recoverable probe unit in through casing resistivity logging instrument,
Solving existing through casing resistivity logging instrument to break down at underground logging, backup mechanism can not normally regain,
Cause the defect that electrode catheter can not depart from smoothly with internal surface of sleeve pipe；Provide a kind of insulating Design simultaneously, and
Can make the firm bundle of probe on sleeve pipe, it is ensured that to measure the accuracy of signal.
The present invention solves that above-mentioned technical problem the technical scheme is that
A kind of recoverable probe unit in through casing resistivity logging instrument, this device is by probe, spy
Pin volume pin, probe connecting rod, little spring, inner shell, big spring, pre-load nut, shell, base plate, fastening volume
The compositions such as pin.Described probe small end is articulated with one by probe volume pin with probe；On described inner shell
Between end cap and pre-load nut, it is provided with a little spring being applied on probe connecting rod；Described inner shell and shell
Between be provided with big spring；Described big spring upper surface supports the upper end of inner shell, and lower surface abuts against connection
Base plate on shell.
It is an advantage of the current invention that:
1, when through casing resistivity logging instrument breaks down and can not normally regain backup mechanism, it is achieved probe
Regain smoothly, make probe depart from tube wall, thus realize the smooth recovery of fault instrument.
2, this device is under the effect of large and small spring so that probe is always vertical, and can be by interior
Insulation around is separated by shell (PEEK insulant).
3, this retracting device simple in construction, it is simple to install, dismantle and change.
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 shell, 6,
Big spring, 7, pre-load nut, 8, shell, 9, base plate, 10, fastening volume pin, 11, assemble locating surface,
12, location small boss, 13, pilot hole, 14, flange platform, 15, locating surface is installed, 16, cable-through hole,
17, lug.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of be arranged in through casing resistivity logging instrument backup mechanism therefore
The device of recoverable probe during barrier.Described probe connecting rod 3 upper end is articulated with one by probe volume pin 2 with probe 1
Body, probe 1 can around probe volume pin 2 towards set direction rotary dumping, probe connecting rod 3 can drive probe 1,
Probe volume pin 2 moves up and down in inner shell 5 pilot hole.Through hole it is provided with as probe volume pin in the bottom of probe 1
The installing hole of 2, one end of through hole is as assembling locating surface 11；Between described inner shell 5 upper end cover and pre-load nut 7,
It is provided with a little spring being applied on probe connecting rod 34, can with probe 1, probe volume pin 2, probe even
Bar 3, little spring 4, pre-load nut 7 move up and down together in shell 8 cavity；Described inner shell 5 and shell 8 it
Between be provided with big spring 6；Described big spring 6 upper surface supports the upper end of inner shell 5, and lower surface abuts against connection
Base plate 9 on shell 8, without phase between described base plate 9, shell 8, shell 5, probe connecting rod 3, probe 1
To rotation.
Described probe 1, its material is wear-resisting hard alloy, and main body is the composite unit structure of circular cone and cylinder.
A through hole it is provided with, as the installing hole of probe volume pin 2 in the bottom of probe；One end of through hole is provided with milling
To the plane of certain depth, as its assembling locating surface 11, for the cuboid small boss with inner shell upper surface
Use during cooperation, thus the uniqueness in orientation when ensureing to install probe；Center in probe bottom
Place, is provided with parallel with a milling plane width and the degree of depth determines runs through straight trough, for coordinating probe connecting rod
Use；Probe bottom while being provided with an inclination arc surface, its center of circle in through hole in the heart, this
Sample makes, when through casing resistivity logging instrument breaks down and can not normally regain backup mechanism, to propose well logging upper
Under the effect of instrument pulling force, probe can be around probe volume pin rotary dumping, it is achieved the fault of probe is regained, from
And realize the disengaging of probe and internal surface of sleeve pipe, it is to avoid the stuck problem that occurs when above carrying fault instrument and to set
The pernicious destruction that pipe causes.
Described probe connecting rod 3, its body contours is a up big and down small frustum cone structure.On probe connecting rod 3
The center of half part is provided with a through hole, and is provided with in both sides and is milled into certain depth and is all perpendicular to circle
The plane in hole, when they coordinate for rolling up pin 2 with probe 1 and probe；It is provided with on the top of probe connecting rod 3
Arc surface, to avoid interference when probe rotates；It is provided with in the latter half of probe connecting rod 3 and is joined by screw thread
Close and play the pre-load nut 7 of pretension little spring pre-compression force, and its lowermost end is provided with and is easy to connecing of welding lead
The end of a thread 17.
Described probe volume pin 2 be conductivity by force, good springiness and corrosion resistant volume pin, due to its effect, can
Allow probe around probe volume pin rotary dumping, probe 1, probe also can be allowed to roll up pin 2 and probe connecting rod 3 three
It is fully contacted, it is ensured that measure the stable delivery of signal.
Described shell 5, its main body is the cylindrical structure of band upper end cover, and it is high temperature resistant, the PEEK of insulation
Material, so that probe 1, probe volume pin 2 and this three of probe connecting rod 3 can fully separate with outside, protects
The signal that card probe 1 collects is directly via the wire transmission of probe connecting rod bottom, it is to avoid it is unnecessary to suffer
Interference.A pilot hole 13 guided for probe connecting rod it is provided with in inner shell upper end cover center；In inner shell upper end
At the outer of lid, being provided with the most overhanging cylindrical boss, its overhanging diameter is bigger than the external diameter of cylindrical tube
And it is resisted against the upper end surface of shell；On one side of circular cylindrical projection edge of table, it is provided with one and is easy to determine spy
The cuboid location small boss 12 of syringe needle installation position.Between inner shell upper end cover and pre-load nut 7, it is provided with one
The individual compression little spring 4 being applied on probe connecting rod 3, under normal circumstances, its restoring force promotes probe first
Directly it is in vertical duty.
Described shell 8, its main body is the cylindrical structure of band upper end cover.It is provided with one in shell upper end cover center
Individual being easy to is run through inner shell and determines the circular of inner shell installation position and rectangular combination bore；The bottom of shell is
Flange-type structure, and it is provided with four through holes installing screw.
Described base plate 9 is certain thickness circular slab, and its center is provided with a cable-through hole being easy to pass through wire
16, and edge is provided with an installation locating surface 15 corresponding with housing flange platform 14 and three installation fastenings are rolled up
The through hole of pin, after loading onto fastening volume pin 10, probe unit just at random can cross set as an entirety
Mount and dismount in the backup mechanism of tube resistor rate logging instrument；In annular space between inner shell and shell,
Being provided with the big spring of a compression, its upper surface supports the upper end of inner shell, and lower surface is resisted against outside being connected to
On the base plate of shell.The normal pressure acted on probe when internal surface of sleeve pipe increases gradually, and probe will be extruded
Probe volume pin 2, probe connecting rod 3, little spring 4, pre-load nut 7 is driven to bounce back together with inner shell 5 certain distance,
Until retracting to their extreme position, finally the active force of surplus will be born by the roller in backup mechanism.
So, probe 1 is not only effectively ensured the normal pressure of internal surface of sleeve pipe is met minimum requirements, and can
Effectively prevent the probe unit extruding caused because normal pressure is excessive from destroying.
Those skilled in the art is in the condition of the spirit and scope of the present invention determined without departing from claims
Under, it is also possible to above content is carried out various amendment.Therefore the scope of the present invention be not limited in
On explanation, but determined by the scope of claims.
Claims (5)
1. the recoverable probe unit in the through casing resistivity logging instrument, including probe (1),
Probe volume pin (2), probe connecting rod (3), inner shell (5), shell (8), base plate (9), it is characterised in that:
Described probe connecting rod (3) upper end is articulated with one by probe volume pin (2) and probe (1)；In described
Between shell (5) upper end cover and pre-load nut (7), it is provided with a little bullet being applied on probe connecting rod (3)
Spring (4)；Big spring (6) it is provided with between described inner shell (5) and shell (8)；Described big spring (6)
Upper surface supports the upper end of inner shell (5), and lower surface abuts against the base plate (9) being connected on shell (8)；
Being provided with through hole in the bottom of probe (1), one end of through hole is as assembling locating surface (11), described
Through hole is the installing hole of probe volume pin (2)；
Described shell (5) is the seal with upper end cover column structure；
There is a pilot hole (13) described inner shell (5) upper end cover center；Described inner shell (5) upper end cover
At outer, it it is the most overhanging cylindrical boss；The overhanging diameter of described cylindrical boss is than described inner shell circle
The external diameter of column casing body is big；On one side of circular cylindrical projection edge of table, there is cuboid location small boss (12)；
Described shell (8) is the cylindrical structure of band upper end cover；
There is a circular and rectangular combination bore described shell (8) upper end cover center；Described shell (8)
Bottom is flange platform (14), and flange platform (14) be set to install locating surface (15), edge
Place arranges the through hole installing fastening volume pin (10).
A kind of recoverable probe dress in through casing resistivity logging instrument the most according to claim 1
Put, it is characterised in that: described probe (1) is the composite unit structure of circular cone and cylinder.
A kind of recoverable probe dress in through casing resistivity logging instrument the most according to claim 1
Put, it is characterised in that: described probe connecting rod (3) is up big and down small frustum cone structure.
A kind of recoverable probe dress in through casing resistivity logging instrument the most according to claim 3
Put, it is characterised in that: the top of described probe connecting rod is the plane that both sides are milled, and top is circular arc；
Bottom is provided with the pre-load nut (7) by threaded engagement；Lowermost end is the lug (17) of welding lead.
A kind of recoverable probe dress in through casing resistivity logging instrument the most according to claim 1
Put, it is characterised in that: described base plate (9) is certain thickness circular slab, and center is provided with one and passes through wire
Cable-through hole (16), there be the installation locating surface (15) corresponding with shell (8) flange platform (14) in edge
With three through holes installing fastening volume pin (10).
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103821503A CN103821503A (en) | 2014-05-28 |
| CN103821503B true CN103821503B (en) | 2016-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103821503B (en) |
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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| Publication number | Publication date |
|---|---|
| CN103821503A (en) | 2014-05-28 |
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