CN115749666B - Underground ratchet type blanking plug - Google Patents
Underground ratchet type blanking plug Download PDFInfo
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- CN115749666B CN115749666B CN202211352971.3A CN202211352971A CN115749666B CN 115749666 B CN115749666 B CN 115749666B CN 202211352971 A CN202211352971 A CN 202211352971A CN 115749666 B CN115749666 B CN 115749666B
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- clamping
- ratchet
- floating
- working cylinder
- blanking plug
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention belongs to the technical field of oil and gas equipment, and discloses an underground ratchet type blanking plug which comprises a clamping working cylinder, wherein the clamping working cylinder is connected with an oil pipe, two floating ratchet clamping blocks are oppositely arranged in the clamping working cylinder, the lower end of the clamping working cylinder is in threaded connection with a clamping joint, and the upper end of the clamping joint is abutted against the floating ratchet clamping blocks; the middle part of the blocking rod is annularly provided with a V-shaped sealing ring, and the lower part of the blocking rod is provided with a fixed ratchet matched with the floating ratchet clamping block. According to the underground ratchet type blanking plug provided by the invention, the clamping working barrel is connected to the bottom of an oil pipe in advance, and when the oil pipe needs to be replaced subsequently, a feeding tool is used for throwing the plugging rod, and the plugging rod is connected with the clamping working barrel, so that the V-shaped sealing ring blocks the oil pipe, the problem that the blanking plug is blocked in the process of lowering the large-size blanking plug is avoided, and the passing performance of the blanking plug is improved.
Description
Technical Field
The invention belongs to the technical field of oil and gas equipment, and particularly relates to an underground ratchet type blanking plug.
Background
Most of the existing mechanical type blanking plugs in the oil pipes are manually steel wires which are sent into the oil pipes, the effect of plugging the ground pressure is difficult to play in the lowering process due to the fact that factors such as large size of the blanking plugs are difficult to be lowered to the designed depth, and a new blanking plug is urgently needed to be designed for achieving operation of a gas production well under pressure.
Disclosure of Invention
The present invention aims to solve the above technical problem at least to some extent. Therefore, the invention aims to provide a downhole ratchet type blanking plug.
The technical scheme adopted by the invention is as follows:
a downhole ratcheted plug comprising:
the clamping working cylinder is connected with the oil pipe, two floating ratchet fixture blocks are oppositely arranged in the clamping working cylinder, the lower end of the clamping working cylinder is in threaded connection with the clamping joint, and the upper end of the clamping joint is abutted to the floating ratchet fixture blocks;
the middle part of the blocking rod is annularly provided with a V-shaped sealing ring, and the lower part of the blocking rod is provided with a fixed ratchet matched with the floating ratchet clamping block.
Preferably, the inside of card work section of thick bamboo is equipped with the round seal groove, is equipped with the round boss on the jam stick, and the V type sealing washer is located on the outer periphery of boss, and the V type sealing washer is sealed with the seal groove cooperation.
Preferably, a downward mounting groove is formed in the clamping working barrel, and the upper end of the floating ratchet clamping block is movably mounted in the mounting groove.
Preferably, an annular space is formed between the outer wall of the upper portion of the clamping joint and the inner wall of the clamping working barrel, the lower end of the floating ratchet clamping block is movably mounted in the annular space, a step is convexly arranged in the middle of the floating ratchet clamping block, and the upper end of the clamping joint is abutted to the lower surface of the step.
Preferably, the blocking rod is provided with a releasing pin hole.
The invention has the beneficial effects that:
according to the underground ratchet type blanking plug provided by the invention, the clamping working barrel is connected to the bottom of an oil pipe in advance, and when the oil pipe needs to be replaced subsequently, a feeding tool is used for throwing the plugging rod, and the plugging rod is connected with the clamping working barrel, so that the V-shaped sealing ring blocks the oil pipe, the problem that the blanking plug is blocked in the process of lowering the large-size blanking plug is avoided, and the passing performance of the blanking plug is improved.
Drawings
FIG. 1 is a schematic view of the construction of a downhole ratcheted plug of the present invention.
Fig. 2 is a sectional view of the locking cylinder of the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a cross-sectional view of a stopper rod of the present invention.
In the figure: 1-a sleeve; 2-clamping a working barrel; 3-floating ratchet clamping block; 4-a clamping joint; 5-mounting grooves; 6-a stopper rod; 7-V type sealing ring; 8-fixed ratchet; 9-a sealing groove; 10-boss; 11-releasing pin hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
As shown in fig. 1 to 4, the downhole ratchet type blanking plug of the embodiment comprises a clamping working cylinder 2 and a plugging rod 6, wherein the clamping working cylinder 2 is connected to an oil pipe through a coupling and is lowered into a casing 1 along with the oil pipe, two floating ratchet fixture blocks 3 are arranged in the clamping working cylinder 2 relatively, the lower end of the clamping working cylinder 2 is in threaded connection with a clamping joint 4, and the upper end of the clamping joint 4 is abutted to the floating ratchet fixture blocks 3; as shown in fig. 2 and 3, a downward mounting groove 5 is formed in the locking barrel 2, the upper end of the floating ratchet latch 3 is movably mounted in the mounting groove 5, and the upper end of the floating ratchet latch 3 can move left and right. An annular space is arranged in front of the outer wall of the upper part of the clamping joint 4 and the inner wall of the clamping working barrel 2, the lower end of the floating ratchet clamping block 3 is movably arranged in the annular space, and the lower end of the floating ratchet clamping block 3 can move left and right. The protruding step that is equipped with in the middle part of the ratchet fixture block 3 that floats, the upper end and the step lower surface butt of card joint 4, the upper surface of step and card work drum 2 have the clearance to the whole activity from top to bottom that can of the ratchet fixture block 3 that floats, nevertheless because the spacing of mounting groove 5 and annular space, the ratchet fixture block that floats can not drop all the time, only can move about in the design range.
The inside of the clamping working cylinder 2 is provided with a circle of sealing groove 9, the plugging rod 6 is provided with a circle of boss 10, the V-shaped sealing ring 7 is annularly arranged on the outer circumferential surface of the boss 10, and the V-shaped sealing ring 7 is matched and sealed with the sealing groove 9. The lower part of the blocking rod 6 is provided with a fixed ratchet 8 matched with the floating ratchet clamping block 3, and the floating ratchet clamping block 3 is designed in a floating mode and has a certain moving range in the up-down direction and the left-right direction, so that the connection between the fixed ratchet 8 and the floating ratchet clamping block 3 is facilitated, and the blocking rod 6 can only move downwards and cannot move upwards due to the matching relation between the fixed ratchet 8 and the floating ratchet clamping block 3.
Be equipped with releasing pin hole 11 on the jam stick 6, releasing pin hole 11 is used for being connected with the running tool and transfers the jam stick, and the lower extreme chamfer of jam stick 6 sets up.
According to the downhole ratchet type blanking plug, the floating ratchet fixture block 3 and the clamping joint 4 are connected to the bottom of an oil pipe in advance through the clamping working cylinder 2, the plugging rod 6 is lowered from the oil pipe through a feeding tool, the fixed ratchet 8 on the plugging rod is connected with the floating ratchet fixture block, and the V-shaped sealing ring 7 is matched with the sealing groove 9 to block the clamping working cylinder 2, so that the oil pipe is sealed.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (4)
1. A downhole ratcheted plug, comprising:
the clamping device comprises a clamping working cylinder (2), wherein the clamping working cylinder (2) is connected with an oil pipe, two floating ratchet clamping blocks (3) are oppositely arranged in the clamping working cylinder (2), the lower end of the clamping working cylinder (2) is in threaded connection with a clamping joint (4), and the upper end of the clamping joint (4) is abutted to the floating ratchet clamping blocks (3);
the middle part of the blocking rod (6) is annularly provided with a V-shaped sealing ring (7), and the lower part of the blocking rod (6) is provided with a fixed ratchet (8) matched with the floating ratchet clamping block (3);
a downward mounting groove (5) is arranged in the clamping working barrel (2), and the upper end of the floating ratchet clamping block (3) is movably mounted in the mounting groove (5); an annular space is arranged in front of the outer wall of the upper part of the clamping joint (4) and the inner wall of the clamping working barrel (2), the lower end of the floating ratchet clamping block (3) is movably arranged in the annular space, a step is convexly arranged in the middle of the floating ratchet clamping block (3), and the upper end of the clamping joint (4) is abutted to the lower surface of the step.
2. The downhole ratcheted plug according to claim 1, wherein: the locking device is characterized in that a circle of sealing groove (9) is formed in the clamping working barrel (2), a circle of boss (10) is arranged on the blocking rod (6), the V-shaped sealing ring (7) is arranged on the outer circumferential surface of the boss (10), and the V-shaped sealing ring (7) is matched and sealed with the sealing groove (9).
3. The downhole ratcheted plug of claim 1, wherein: the blocking rod (6) is provided with a releasing pin hole (11).
4. The downhole ratcheted plug of claim 1, wherein: the lower end of the blocking rod (6) is chamfered.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202211352971.3A CN115749666B (en) | 2022-11-01 | 2022-11-01 | Underground ratchet type blanking plug |
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Application Number | Priority Date | Filing Date | Title |
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CN202211352971.3A CN115749666B (en) | 2022-11-01 | 2022-11-01 | Underground ratchet type blanking plug |
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Publication Number | Publication Date |
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CN115749666A CN115749666A (en) | 2023-03-07 |
CN115749666B true CN115749666B (en) | 2023-04-07 |
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CN202211352971.3A Active CN115749666B (en) | 2022-11-01 | 2022-11-01 | Underground ratchet type blanking plug |
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Citations (5)
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US5542475A (en) * | 1994-12-01 | 1996-08-06 | Cooper Cameron Corporation | Blanking plug assembly |
CN105370237A (en) * | 2014-08-29 | 2016-03-02 | 中国石油天然气股份有限公司 | Stopper |
CN208267820U (en) * | 2018-05-07 | 2018-12-21 | 中国海洋石油集团有限公司 | A kind of blanking plug |
CN210152598U (en) * | 2019-06-06 | 2020-03-17 | 中国石油化工股份有限公司 | Oil pipe plug |
CN114075938A (en) * | 2020-08-11 | 2022-02-22 | 中石化石油工程技术服务有限公司 | Self-tightening anti-deflection setting device |
Family Cites Families (12)
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GB914591A (en) * | 1959-04-13 | 1963-01-02 | John Victor Fredd | Well tubing plug |
US4928761A (en) * | 1989-07-17 | 1990-05-29 | Otis Engineering Corporation | Two-way plugs for wells |
US6334488B1 (en) * | 2000-01-11 | 2002-01-01 | Weatherford/Lamb, Inc. | Tubing plug |
CN201496029U (en) * | 2009-01-12 | 2010-06-02 | 成都一一淼机电设备有限公司 | All-floating slip packer |
US9353596B2 (en) * | 2013-09-18 | 2016-05-31 | Rayotek Scientific, Inc. | Oil well plug and method of use |
CN204436318U (en) * | 2014-12-31 | 2015-07-01 | 中国海洋石油总公司 | A kind of paired cable passes through packer |
US20160194932A1 (en) * | 2015-01-06 | 2016-07-07 | Shuhao Liu | Rubber Sleeve Protection Ring and Downhole Plugging Apparatus |
CN105201443B (en) * | 2015-08-19 | 2018-02-23 | 新疆华油油气工程有限公司 | A kind of blanking plug in oil pipe launched for steel wire |
US10961811B2 (en) * | 2017-03-24 | 2021-03-30 | Vertechs Oil & Gas Technology Usa Company Llc | Dissolvable bridge plug |
CN113047804B (en) * | 2020-12-29 | 2022-12-20 | 新疆华油油气工程有限公司 | Throwing and fishing type double-acting blanking plug |
CN214886972U (en) * | 2021-07-12 | 2021-11-26 | 西安腾特石油科技有限公司 | Oil well blocking device |
CN114320213B (en) * | 2022-03-16 | 2022-05-20 | 四川圣诺油气工程技术服务有限公司 | Soluble packing device for operation under pressure |
-
2022
- 2022-11-01 CN CN202211352971.3A patent/CN115749666B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5542475A (en) * | 1994-12-01 | 1996-08-06 | Cooper Cameron Corporation | Blanking plug assembly |
CN105370237A (en) * | 2014-08-29 | 2016-03-02 | 中国石油天然气股份有限公司 | Stopper |
CN208267820U (en) * | 2018-05-07 | 2018-12-21 | 中国海洋石油集团有限公司 | A kind of blanking plug |
CN210152598U (en) * | 2019-06-06 | 2020-03-17 | 中国石油化工股份有限公司 | Oil pipe plug |
CN114075938A (en) * | 2020-08-11 | 2022-02-22 | 中石化石油工程技术服务有限公司 | Self-tightening anti-deflection setting device |
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CN115749666A (en) | 2023-03-07 |
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