CN111894475A - Snakelike weight bar - Google Patents
Snakelike weight bar Download PDFInfo
- Publication number
- CN111894475A CN111894475A CN202010603036.4A CN202010603036A CN111894475A CN 111894475 A CN111894475 A CN 111894475A CN 202010603036 A CN202010603036 A CN 202010603036A CN 111894475 A CN111894475 A CN 111894475A
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- China
- Prior art keywords
- weighting
- serpentine
- flexible steel
- blocks
- connecting head
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- 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
Abstract
The invention provides a snakelike weighting rod, relates to the technical field of manufacturing of petroleum exploitation rope operation tools, and solves the technical problem that the existing weighting rod cannot be bent to drive a steel wire or a cable to pass through a tubular column with a large well inclination. The S-shaped weighting rod comprises a first connecting head (1), a middle block (2), a weighting block (3), balls (4), a second connecting head (5) and a flexible steel rope (6). The S-shaped weighting rod is simple in structure and low in manufacturing cost, can be bent in any direction in a well with larger well inclination, guarantees weighting efficiency, and improves applicability of the weighting rod.
Description
Technical Field
The invention relates to the technical field of manufacturing of petroleum exploitation rope operation tools, in particular to a snakelike weighting rod.
Background
The rope operation technology is an important component in the oil-gas field development technology, and can be used for well logging and well testing; putting, operating and recovering a downhole tool or device; fishing the fallen objects in the well and the like. The method is widely applied to well completion, well workover and oil-gas field production operation; the rope operation can independently complete various underground operation tasks, and can be fused into other related operations to provide underground operation services for the underground operation tasks. Rope operation requires the use of steel wires or cables to run special equipment into the well to accomplish the operation of a specific task. The string of wireline tools is an essential tool for implementing the process technology.
In the string of rope operation instrument need often use many to aggravate the pole and aggravate the tool string, but present most aggravate the pole and exist and can't guide the logging cable and pass through the passageway in the great tubular column of crookedness, only can pass through straight passageway or the less passageway of crookedness to the surface of current weight and the pipeline inner wall friction are great, influence the falling speed and the falling depth of operation tool string.
Disclosure of Invention
The invention aims to provide a snakelike weighting rod, which adopts a scheme that a plurality of weighting blocks are connected in series by flexible steel ropes, so that the weighting rod can be bent in any direction in a pipeline, and balls are arranged on the weighting blocks and the middle blocks, so that the friction between the weighting rod and the inner wall of the pipeline is reduced, and the technical problem that the existing weighting rod cannot be bent to drive steel wires or cables to pass through the pipeline with larger inclination of a well is solved. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention adopts the following technical scheme:
a serpentine weighting bar comprises a plurality of weighting blocks connected in series on a flexible steel cable; wherein:
preferably, two ends of the flexible steel rope connected with the plurality of weighting blocks in series are respectively installed in the first connector and the second connector;
preferably, intermediate blocks are respectively arranged between the first connecting head and the second connecting head and the weighting blocks at the two ends of the flexible steel rope;
preferably, each weighting block and the middle block are provided with a ball;
preferably, the flexible steel cable and the first and second joints are provided with fastening pins.
Optionally or preferably, the middle block is connected with the first joint and the second joint through threads.
Optionally or preferably, the first joint is further provided with an external thread for connecting other tools.
Optionally or preferably, the second joint is further provided with an internal thread for connecting other tools.
Optionally or preferably, the first connecting head, the middle block, the weight and the second connecting head are all made of metal with higher density and higher hardness.
Alternatively or preferably, the serpentine weighting bar may increase or decrease the number of weighting blocks as required by the actual site.
Alternatively or preferably, the inner diameter of the flexible steel cable hole of the weight and the intermediate block is larger than the outer diameter of the flexible steel cable.
Optionally or preferably, a thin rubber pad is further arranged between the weighting blocks.
Based on the technical scheme, the following technical effects can be generated:
the snakelike weighting rod provided by the embodiment of the invention is suitable for the situation that a rope operation tool string passes through a pipeline with a larger inclined angle in an oil exploitation field. The invention discloses a snake-shaped weighting rod, which adopts a scheme that a plurality of weighting blocks are connected in series by flexible steel ropes, so that the weighting rod can be bent in any direction in a pipeline, and balls are arranged on the weighting blocks and the middle blocks, so that the friction between the weighting rod and the inner wall of the pipeline is reduced, and the technical problem that the existing weighting rod cannot be bent to drive ropes or cables to pass through the pipeline with larger inclination of a well is solved. The S-shaped weighting rod has the advantages of simple structure and low manufacturing cost, can be bent randomly in a well with a larger inclination, ensures the weighting efficiency and improves the applicability of the weighting rod.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention;
in the figure: 1. a first connecting head; 2. a middle block; 3. a weighting block; 4. a ball bearing; 5. a second connector; 6. a flexible steel cord.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1-2:
the invention provides a snakelike weighting rod, which comprises a plurality of weighting blocks 3 connected in series on a flexible steel rope 6; wherein:
two ends of the flexible steel rope 6 which is connected with the plurality of weighting blocks 3 in series are respectively arranged in the first connector 1 and the second connector 5;
intermediate blocks 2 are respectively arranged between the first connecting head 1, the second connecting head 5 and the weighting blocks 3 at the two ends of the flexible steel rope 6;
each weighting block 3 and the middle block 2 are provided with a ball 4;
as an alternative embodiment, a fastening pin is provided between the flexible steel cable 6 and the first and second connectors 1 and 5.
In an alternative embodiment, the middle block 2 is connected with the first joint 1 and the second joint 5 through threads.
As an alternative embodiment, the first joint 1 is also provided with an external thread for connecting other tools.
In an optional embodiment, the second joint 5 is further provided with an internal thread for connecting other tools.
In an alternative embodiment, the first connecting head 1, the middle block 2, the weight 3 and the second connecting head 5 are all made of metal with high density and high hardness.
As an alternative embodiment, the serpentine-shaped weighting bar may increase or decrease the number of weighting blocks 3 according to the actual field needs.
As an alternative embodiment, the inner diameter of the flexible steel cable hole of the weight 3 and the middle block 2 is larger than the outer diameter of the flexible steel cable 6.
As an alternative embodiment, a thin rubber pad is further arranged between the weighting blocks 3.
In an alternative embodiment, the first connecting head 1, the middle block 2, the weight 3 and the second connecting head 5 are all made of tungsten steel.
The working process of the snakelike weighting rod is as follows: and respectively connecting the first connecting head 1 and the second connecting head 2 of the snakelike weighted rod with other tools of the working tool string, and arranging the working tool string on the rope to carry out rope working.
Claims (8)
1. A snakelike weight bar which is characterized in that: comprises a plurality of weighting blocks (3) connected in series on a flexible steel rope (6); wherein:
two ends of the flexible steel rope (6) which is connected with the plurality of weighting blocks (3) in series are respectively installed in the first connector (1) and the second connector (5);
intermediate blocks (2) are respectively arranged between the first connecting head (1) and the second connecting head (5) and the weighting blocks (3) at the two ends of the flexible steel rope (6);
each weighting block (3) and the middle block (2) are provided with a ball bearing (4);
and a fastening pin is arranged between the flexible steel rope (6) and the first joint (1) and the second joint (5).
2. A serpentine weighting bar according to claim 1, wherein: the middle block (2) is connected with the first connector (1) and the second connector (5) through threads.
3. A serpentine weighting bar according to claim 1, wherein: and the first joint (1) is also provided with an external thread for connecting other tools.
4. A serpentine weighting bar according to claim 1, wherein: and the second joint (5) is also provided with internal threads for connecting other tools.
5. A serpentine weighting bar according to claim 1, wherein: the first connecting head (1), the middle block (2), the weighting block (3) and the second connecting head (5) are all made of metal with high density and high hardness.
6. A serpentine weighting bar according to claim 1, wherein: the serpentine weighting bar can increase or decrease the number of the weighting blocks (3) according to the actual needs in the field.
7. A serpentine weighting bar according to claim 1, wherein: the inner diameters of the flexible steel rope holes of the weighting block (3) and the middle block (2) are both larger than the outer diameter of the flexible steel rope (6).
8. A serpentine weighting bar according to claim 1, wherein: thin rubber pads are further arranged between the weighting blocks (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010603036.4A CN111894475B (en) | 2020-06-29 | 2020-06-29 | Snakelike weight bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010603036.4A CN111894475B (en) | 2020-06-29 | 2020-06-29 | Snakelike weight bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111894475A true CN111894475A (en) | 2020-11-06 |
| CN111894475B CN111894475B (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010603036.4A Active CN111894475B (en) | 2020-06-29 | 2020-06-29 | Snakelike weight bar |
Country Status (1)
| Country | Link |
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| CN (1) | CN111894475B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030159834A1 (en) * | 2000-06-20 | 2003-08-28 | Kirk Ian Alastair | Centralizer |
| CN201460752U (en) * | 2009-08-18 | 2010-05-12 | 盘锦辽河油田派普钻具制造有限公司 | Three-segment spiral extra-heavy drill rod |
| CN201915941U (en) * | 2010-12-20 | 2011-08-03 | 姚红生 | Flexible weighting rod |
| CN202064867U (en) * | 2011-04-22 | 2011-12-07 | 中国石油天然气股份有限公司 | Strongly magnetic special tool for fishing balls in oil-gas well |
| CN202325492U (en) * | 2011-11-25 | 2012-07-11 | 陈新林 | Flexible weight bar |
| CN202900243U (en) * | 2012-11-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Flexible weight bar for oil well testing |
| CN204082122U (en) * | 2013-07-29 | 2015-01-07 | 杭州瑞利声电技术公司 | The snakelike compliant mechanism of a kind of novel logging instrument |
| CN204113138U (en) * | 2014-09-29 | 2015-01-21 | 中国石油集团长城钻探工程有限公司 | A kind of flexible roller for High angle small curvature radius cased well increases the weight of pipe nipple |
| CN210858630U (en) * | 2019-10-25 | 2020-06-26 | 天津东拓油田技术服务有限公司 | A scour protection top tool string for wire operation in pit for highly deviated well |
-
2020
- 2020-06-29 CN CN202010603036.4A patent/CN111894475B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030159834A1 (en) * | 2000-06-20 | 2003-08-28 | Kirk Ian Alastair | Centralizer |
| CN201460752U (en) * | 2009-08-18 | 2010-05-12 | 盘锦辽河油田派普钻具制造有限公司 | Three-segment spiral extra-heavy drill rod |
| CN201915941U (en) * | 2010-12-20 | 2011-08-03 | 姚红生 | Flexible weighting rod |
| CN202064867U (en) * | 2011-04-22 | 2011-12-07 | 中国石油天然气股份有限公司 | Strongly magnetic special tool for fishing balls in oil-gas well |
| CN202325492U (en) * | 2011-11-25 | 2012-07-11 | 陈新林 | Flexible weight bar |
| CN202900243U (en) * | 2012-11-12 | 2013-04-24 | 中国石油天然气股份有限公司 | Flexible weight bar for oil well testing |
| CN204082122U (en) * | 2013-07-29 | 2015-01-07 | 杭州瑞利声电技术公司 | The snakelike compliant mechanism of a kind of novel logging instrument |
| CN204113138U (en) * | 2014-09-29 | 2015-01-21 | 中国石油集团长城钻探工程有限公司 | A kind of flexible roller for High angle small curvature radius cased well increases the weight of pipe nipple |
| CN210858630U (en) * | 2019-10-25 | 2020-06-26 | 天津东拓油田技术服务有限公司 | A scour protection top tool string for wire operation in pit for highly deviated well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111894475B (en) | 2022-07-29 |
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Effective date of registration: 20220318 Address after: 618399 south section 3, Zhongshan Avenue, Guanghan City, Deyang City, Sichuan Province Applicant after: CHINA NATIONAL PETROLEUM CORPORATION, SOUTHWEST OIL & GASFIELD BRANCH, ENGINEERING TECHNOLOGY Research Institute Address before: 618300 Guanghan City, Deyang City, Sichuan Province Applicant before: CHINA NATIONAL PETROLEUM CORPORATION, SOUTHWEST OIL & GASFIELD BRANCH, ENGINEERING TECHNOLOGY Research Institute Applicant before: SICHUAN SHENGNUO OIL. AND GAS ENGINEERING TECHNOLOGY SERVICE Co.,Ltd. |
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