CN104373111A - Logging instrument centralizing plug - Google Patents
Logging instrument centralizing plug Download PDFInfo
- Publication number
- CN104373111A CN104373111A CN201410578865.6A CN201410578865A CN104373111A CN 104373111 A CN104373111 A CN 104373111A CN 201410578865 A CN201410578865 A CN 201410578865A CN 104373111 A CN104373111 A CN 104373111A
- Authority
- CN
- China
- Prior art keywords
- plug
- plug body
- righting
- logger
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
Abstract
The invention discloses a logging instrument centralizing plug, which comprises a plug body, wherein one end of the plug body is additionally provided with a rubber plug with the spherical bottom; the other end of the plug body is provided with a blind hole; the end part, corresponding to the blind hole, of the plug body is of a cylinder structure; the rubber plug is embedded on a plug body cylinder; a fixing pin penetrates through a through hole formed in the embedded rubber plug and plug body cylinder; a sealing ring and a clamp ring are sequentially arranged on the outer peripheral wall of the plug body; and a threaded ring is arranged along the outer circumferential wall of the plug body arranged at the inner side of the clamp ring. The centralizing plug has the advantages that the collision between the instrument bottom and the well wall (or the casing pipe wall) can be effectively avoided, so that the influence on the service life of the instrument is reduced; and during the well logging of sound wave type instruments in a small-dimension well hole (or casing pipe), the number of the additionally installed centralizers is reduced from two to one, so that the work intensity is reduced.
Description
Technical field
The invention belongs to an auxiliary pipe nipple in oil well logging industry in logger, particularly a kind of logger righting plug.
Background technology
At present, logger in the process of going into the well, instrument all must connect special plug bottom, because the external diameter of this kind of plug is the same with instrument external diameter, therefore its effect is generally for buffering to instrument in instrument sealing and decentralization process.The stopper structure of this structure is simple, but shortcoming is: the first, because outside dimension is the same with logger outside dimension, therefore cannot avoid bottom instrument and collision between the borehole wall (or casing wall), can produce harmful effect to the application life of instrument; Second, usually need to install centralizer additional when sound wave quasi-instrument is logged well, in small size well (or sleeve pipe) during well logging, because sound wave quasi-instrument bottom does not have righting structure, 1 centralizer can only be respectively installed additional at the two ends of sound wave quasi-instrument, the quantity of therefore installing centralizer in practical operation has 1 to become 2, adds workload.
Summary of the invention
The object of this invention is to provide a kind of logger righting plug, not only can effectively avoid bottom instrument and collision between the borehole wall (or casing wall), reduce the impact on instrument application life; And when logging well in small size well (or sleeve pipe) for sound wave quasi-instrument, the quantity installing centralizer additional being reduced to one by two, reduces working strength.
The object of the invention is to be realized by following technical proposals.
A kind of logger righting plug, comprise plug body, it is spherical rubber plug that the end of described plug body installs a bottom additional, be connected with described plug body inside the rubber plug held is cylinder shape groove, the cylinder insert of cylinder shape groove and plug end of body projection, steady pin is applied in the through hole in the rubber plug after insert and plug body cylinder; The other end of plug body is provided with a blind hole, and the periphery wall of described plug body is provided with sealing ring and snap ring successively, is provided with threaded collar along the external perisporium of the plug inside snap ring.
Further, the cylinder interior of described plug end of body projection is provided with limiting stand.
Further, described threaded collar to be pressed on baffle ring and to connect with the limiting stand on plug body, and snap ring is located by round wire circlip.
Further, described threaded collar end, by screw fastening, connects with the limiting stand on plug body.
Further, the excircle of described rubber plug is be provided with six protruding righting arm structures, and point distribution such as six righting arm circumferencial directions, leaves gap between adjacent two righting arms.
Further, described six protruding righting arm external diameters are less than small size well or casing inner diameter.
Further, described rubber plug is connected with plug body and holds as being provided with cylinder shape groove structure, leaves the through hole running through steady pin wherein between a pair righting arm.
Further, described plug body adopts metal material.
Compared with prior art, beneficial effect of the present invention is:
1) this righting plug have employed bottom for spherical rubber plug, reduces the resistance of instrument in small size well (or sleeve pipe), is convenient to the buffering to instrument in instrument sealing and decentralization process.
2) this righting plug have employed the righting arm structure of petal type projection, effectively avoids bottom instrument and collision between the borehole wall (or casing wall), reduces the impact on instrument application life;
3) protruding righting arm external diameter is less than small size well or casing inner diameter, not only solves bottom instrument and collision problem between the borehole wall (or casing wall), eliminate bring thus may on the impact in instrument application life;
4), when logging well in small size well (or sleeve pipe) for sound wave quasi-instrument, the quantity installing centralizer additional is reduced to one by two, reduces working strength.
Accompanying drawing explanation
Accompanying drawing described herein and subordinate list are used to provide a further understanding of the present invention, form a application's part, do not form limitation of the invention.
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 (a)-2 (c) is respectively the structural representation of rubber plug.
In figure: 1, plug body; 2, sealing ring; 3, round wire circlip; 4, snap ring; 5, baffle ring; 6, threaded collar; 7, steady pin; 8, rubber plug.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly clear and definite, be described in further details below in conjunction with accompanying drawing 1 pair of the specific embodiment of the present invention.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
As shown in Figure 1, logger righting plug of the present invention, comprise plug body 1, installing a bottom additional in one end of righting plug body 1 is spherical rubber plug 8, the external diameter of rubber plug 8 is more smaller than undersized well (or casing inner diameter), the shape of cross section of rubber plug 8 can not be totally-enclosed form, leave certain space.Being connected with plug body 1 inside the rubber plug 8 held is cylinder shape groove, the cylinder insert of cylinder shape groove and plug body 1 end bosses, and steady pin 7 is applied in the through hole in the rubber plug 8 after insert and plug body 1 cylinder; The other end of righting plug body 1 is provided with a blind hole, the periphery wall of plug body 1 is provided with successively sealing ring 2 and round wire circlip 3, is provided with threaded collar 6 along plug body 1 periphery wall inside round wire circlip 3.The cylinder interior of plug body 1 end bosses is provided with limiting stand, and threaded collar 6 to be pressed on baffle ring 5 and to connect with the limiting stand on plug body 1, and snap ring 4 is located by round wire circlip 3.Threaded collar 6 end, by screw fastening, connects with the limiting stand on plug body 1.
As shown in Fig. 2 (a), 2 (b), 2 (c), rubber plug 8 for outer end be spherical shape, periphery is provided with six righting arm structures, and point distribution such as six righting arm circumferencial directions, leaves larger space between adjacent two righting arms.Rubber plug 8 is connected with plug body 1 and holds as being provided with cylinder shape groove structure, leaves the through hole running through steady pin 7 wherein between a pair righting arm.
When the present invention works, first, successively sealing ring 2, threaded collar 6, baffle ring 5, snap ring 4 are enclosed within above plug body 1 successively, and entangle locking with round wire circlip 3.And then two sealing rings are enclosed within plug body 1.Finally, load rubber plug 8, and with steady pin 7 fix in position.
Plug body of the present invention 1 and rubber plug 8 are independently two parts, use steady pin assembly connection each other.Plug body 1 adopts metal material.
The shape of cross section at the maximum gauge place of rubber plug 8 is not totally-enclosed form, and adopt the form of structure of righting arm, the maximum outside diameter size of rubber plug 8 is greater than connected instrument outside dimension.Larger space is left between two between righting arm.Like this, going into the well through mud drilling liquid, reducing the resistance of logger in the process of going into the well; When guaranteed strength, leave larger space buffer instrument between two between righting arm to the collision of the borehole wall.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the present invention by submitted to claims determination scope of patent protection.
Claims (8)
1. a logger righting plug, comprise plug body (1), it is characterized in that: it is spherical rubber plug (8) that the end of described plug body (1) installs a bottom additional, rubber plug (8) inner side of holding is connected for cylinder shape groove with described plug body (1), the cylinder insert of cylinder shape groove and plug body (1) end bosses, steady pin (7) is applied in the through hole in the rubber plug (8) after insert and plug body (1) cylinder; The other end of plug body (1) is provided with a blind hole, the periphery wall of described plug body (1) is provided with successively sealing ring (2) and snap ring (4), plug body (1) periphery wall along snap ring (4) inner side is provided with threaded collar (6).
2. logger righting plug according to claim 1, is characterized in that: the cylinder interior of described plug body (1) end bosses is provided with limiting stand.
3. logger righting plug according to claim 1 and 2, it is characterized in that: described threaded collar (6) is pressed in baffle ring (5) and goes up and connect with the limiting stand on plug body (1), and snap ring (4) is located by round wire circlip (3).
4. logger righting plug according to claim 1, is characterized in that: described threaded collar (6) end, by screw fastening, connects with the limiting stand on plug body (1).
5. logger righting plug according to claim 1, it is characterized in that: the excircle of described rubber plug (8) is be provided with six protruding righting arm structures, point distribution such as six righting arm circumferencial directions, leaves gap between adjacent two righting arms.
6. logger righting plug according to claim 5, is characterized in that: described six protruding righting arm external diameters are less than small size well or casing inner diameter.
7. logger righting plug according to claim 1, it is characterized in that: described rubber plug (8) is connected with plug body (1) and holds as being provided with cylinder shape groove structure, leaves the through hole running through steady pin (7) wherein between a pair righting arm.
8. logger righting plug according to claim 1, is characterized in that: described plug body (1) adopts metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578865.6A CN104373111B (en) | 2014-10-24 | 2014-10-24 | A kind of logger righting plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578865.6A CN104373111B (en) | 2014-10-24 | 2014-10-24 | A kind of logger righting plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104373111A true CN104373111A (en) | 2015-02-25 |
| CN104373111B CN104373111B (en) | 2017-06-06 |
Family
ID=52552275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410578865.6A Active CN104373111B (en) | 2014-10-24 | 2014-10-24 | A kind of logger righting plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104373111B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727380A (en) * | 2019-10-14 | 2021-04-30 | 航天科工惯性技术有限公司 | Sealing centralizer for high-temperature wireless while-drilling system and high-temperature wireless while-drilling system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2233983Y (en) * | 1995-06-21 | 1996-08-28 | 淄博市机械研究所 | Acoustic amplitude well logging instrument used in well |
| US5678630A (en) * | 1996-04-22 | 1997-10-21 | Mwd Services, Inc. | Directional drilling apparatus |
| CN200940452Y (en) * | 2006-08-15 | 2007-08-29 | 张玉森 | Oil pipe shock reducing protector |
| CN203420647U (en) * | 2013-07-03 | 2014-02-05 | 中国石油天然气集团公司 | Centralizer of loggers during drilling |
| CN203603786U (en) * | 2013-12-09 | 2014-05-21 | 中国石油集团渤海钻探工程有限公司 | Tail centering device |
| CN204113274U (en) * | 2014-10-24 | 2015-01-21 | 中国石油天然气集团公司 | Logger righting plug |
-
2014
- 2014-10-24 CN CN201410578865.6A patent/CN104373111B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2233983Y (en) * | 1995-06-21 | 1996-08-28 | 淄博市机械研究所 | Acoustic amplitude well logging instrument used in well |
| US5678630A (en) * | 1996-04-22 | 1997-10-21 | Mwd Services, Inc. | Directional drilling apparatus |
| CN200940452Y (en) * | 2006-08-15 | 2007-08-29 | 张玉森 | Oil pipe shock reducing protector |
| CN203420647U (en) * | 2013-07-03 | 2014-02-05 | 中国石油天然气集团公司 | Centralizer of loggers during drilling |
| CN203603786U (en) * | 2013-12-09 | 2014-05-21 | 中国石油集团渤海钻探工程有限公司 | Tail centering device |
| CN204113274U (en) * | 2014-10-24 | 2015-01-21 | 中国石油天然气集团公司 | Logger righting plug |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727380A (en) * | 2019-10-14 | 2021-04-30 | 航天科工惯性技术有限公司 | Sealing centralizer for high-temperature wireless while-drilling system and high-temperature wireless while-drilling system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104373111B (en) | 2017-06-06 |
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