CN115584943B - Buckle type downhole throwing and fishing tool capable of being released - Google Patents
Buckle type downhole throwing and fishing tool capable of being released Download PDFInfo
- Publication number
- CN115584943B CN115584943B CN202211331518.4A CN202211331518A CN115584943B CN 115584943 B CN115584943 B CN 115584943B CN 202211331518 A CN202211331518 A CN 202211331518A CN 115584943 B CN115584943 B CN 115584943B
- Authority
- CN
- China
- Prior art keywords
- track
- connector
- bearing
- threads
- joint
- 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.)
- Active
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000005266 casting Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 230000003578 releasing effect Effects 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 8
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
Abstract
The invention relates to a releasable buckle type downhole throwing and fishing tool. The device comprises a steel wire rope, a rope cap, a weighting rod, a jar upper part, a jar lower part, an upper connector, a central connecting pipe, a bearing connector and a lower connector which are axially arranged and sequentially connected; the upper end of the outer cylinder is connected with the step of the upper connector, and the bearings are distributed at the upper end and the lower end of the track groove sleeve and are arranged between the upper connector and the bearing connector; the track pins are connected through threaded pin holes of the outer cylinder, the lower ends of the track pins are arranged in track grooves outside the track groove sleeve, and the track grooves are alternately distributed by full tracks, through tracks and half tracks; the step at the upper end of the claw is arranged in the groove between the bearing joint and the lower joint, the lower end of the claw is provided with a buckle, and the metal sheet where the buckle is positioned has certain deflection. The invention has strong universality, is suitable for throwing or salvaging various downhole tools, and can finish multiple locking and releasing actions in the pit. The invention is designed by pure machinery, is reliable and simple to use, has small resistance among all parts, is not easy to block, and is not easy to fall in a buckle design.
Description
Technical Field
The invention relates to a special tool for throwing and fishing an underground tool, in particular to a releasable buckle type underground throwing and fishing tool.
Background
In a complex working environment under the well, various demands for throwing and fishing various underground tools or fishing down-hole fish are often faced. The pertinence design of the existing downhole fishing tool causes low universality, and two sets of tools are often used in the casting and fishing operation. Based on the problems, the invention provides a special tool which can be suitable for throwing or salvaging various downhole tools.
The existing casting and fishing tool is designed mechanically, the structure of the existing casting and fishing tool is fixed between the slip and the fish, and the casting and fishing control part is extruded with the wall surface to often cause larger friction and damage, and the risk of blocking can be caused by the fact that normal releasing is not carried out when the fishing fails, so that the fishing operation is further complicated. Therefore, in order to reduce the cost and smoothly and safely cast and drag, a buckle type underground casting and dragging tool capable of realizing the releasing function is designed.
Disclosure of Invention
In order to realize low-cost and high-efficiency throwing and fishing of the downhole tool, the downhole throwing and fishing tool is provided, and the purposes of locking and releasing are realized by limiting the falling of the buckle through the axial sliding of the sliding sleeve.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a releasable downhole fishing tool comprising: the steel wire rope comprises a steel wire rope body (1), a rope cap (2), a weighting rod (3), a jar upper part (4), a jar lower part (5), an upper connector (6), an outer cylinder (7), a central connecting pipe (8), a track groove sleeve (9), a bearing (10), a bearing connector (11), a claw (12), a lower connector (13), a thrown and fished piece (14) and a track pin (15).
The steel wire rope (1) is connected into the rope cap (2); the rope cap (2) is connected with the weighting rod (3) through threads; the weighting rod (3) is connected with the upper part of the upper part (4) of the jar through threads; the upper part (4) of the jar is connected with the lower part (5) of the jar through a pin rod; the lower part (5) of the jar is connected with the upper connector (6) through threads.
Further, an external thread is arranged outside the upper end of the upper connector (6); the outer surface of the middle part of the upper connector (6) is provided with a step; the lower end of the upper connector (6) is internally provided with an internal thread and a positioning step.
The beneficial effects of adopting the further technical scheme are as follows: the connector (6) can transmit vibration brought by the upper jar through threaded connection; the connector (6) can be axially positioned and transmits driving force through the step; the connector (6) can realize axial positioning and is in fastening connection with the next stage.
Further, a step is arranged at the top end of the outer cylinder (7); the middle part of the outer cylinder (7) is provided with a pin hole with threads; the lower end of the outer cylinder (7) is provided with a conical surface; the lower end of the outer cylinder (7) is internally provided with a step.
The beneficial effects of adopting the further technical scheme are as follows: the outer cylinder (7) realizes axial positioning; the outer cylinder (7) can be externally inserted with a track pin (15); the outer cylinder (7) can be smoothly in butt joint with the thrown-in and-fished-out piece (14) and ensures coaxiality; preventing the claw (12) from falling off.
Further, the upper end and the lower end of the central connecting pipe (8) are respectively provided with external threads and positioning steps.
Further, the upper end and the lower end of the track groove sleeve (9) are provided with steps; the middle section of the track groove sleeve (9) is externally provided with a groove for opening a track.
The beneficial effects of adopting the further technical scheme are as follows: the track groove sleeve (9) is connected with the bearing (10), so that the bearing (10) is prevented from being blocked due to radial movement; the track groove sleeve (9) can interact with a track pin (15) arranged on the outer cylinder (7) to generate rotation, thereby fixing axial movement at different positions.
Furthermore, the inner bearing sheet of the bearing (10) is provided with a step, and a gap is arranged between the inner ring of the inner bearing sheet and the outer wall surface of the central connecting pipe (8); a ball is arranged between the inner bearing sheet and the outer bearing sheet.
The beneficial effects of adopting the further technical scheme are as follows: the bearing sheets in the bearing (10) and the track groove sleeve (9) can drive rotation or independently rotate, so that the track groove sleeve (9) rotates more smoothly; the bearing (10) can bear axial stress, and the inner and outer bearing sheets are smoother when relatively rotating.
Further, the upper end of the bearing joint (11) is provided with threads and steps; a step is arranged outside the middle section of the bearing joint (11); the lower end of the bearing joint (11) is provided with external threads;
the beneficial effects of adopting the further technical scheme are as follows: the bearing joint (11) can ensure good coaxiality and axial positioning; the bearing joint (11) can limit the axial movement of the clamping jaw (12); the bearing joint (11) is connected with the upper end of the lower joint (13) through threads.
Further, a step is arranged in the upper end of the claw (12); the outside of the middle section of the claw (12) is provided with a step; the outer portion of the lower end of the claw (12) is provided with a D-shaped buckle, and chamfering is carried out.
The beneficial effects of adopting the further technical scheme are as follows: the claw (12) can axially slide along with the lower joint (13); the claw (12) can not fall off from the lower end and can be contacted by the step inside the outer cylinder (7) to drive and lift; the claw sleeve (8) can complete the locking function.
Further, threads are arranged in the left end of the lower joint (13) and connected with the bearing joint (11); the outside of the middle section of the lower joint (13) is provided with a long groove, and both ends of the groove are provided with chamfers; the bottom end of the lower joint (13) is provided with a conical surface.
The beneficial effects of adopting the further technical scheme are as follows: the lower joint (13) can be connected with the right end of the bearing joint (11) through threads, so that good coaxiality is ensured, and axial sliding is smoother; the clamping part of the clamping claw (12) can shrink towards the inner pipe groove; the lower joint (13) stretches out more smoothly.
Further, an inclined plane is arranged on the circumference of the upper end of the thrown-in and fished-out piece (14); a groove with a wedge angle is arranged in the upper end;
The beneficial effects of adopting the further technical scheme are as follows: the fished part (14) can be smoothly butted with the outer cylinder (7) to ensure coaxiality; the groove in the fished part (14) can be connected with the buckle at the lower end of the claw (12) to finish locking;
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a cross-sectional view of a lost motion downhole casting and fishing tool of the present invention.
Fig. 2 is a schematic structural view of the claw in the present invention.
Fig. 3 is an enlarged view of a portion of the structure of the invention where the jaws meet the load-bearing joint.
Fig. 4 is a block diagram of an embodiment of the present invention in a fishing operation.
Fig. 5 is a structural diagram of an embodiment of the present invention provided in a launch operation.
Fig. 6 is a schematic structural view of the track groove sleeve of the present invention.
In the figure: the steel wire rope comprises a steel wire rope body (1), a rope cap (2), a weighting rod (3), a jar upper part (4), a jar lower part (5), an upper connector (6), an outer cylinder (7), a central connecting pipe (8), a track groove sleeve (9), a bearing (10), a bearing connector (11), a claw (12), a lower connector (13), a thrown and fished piece (14) and a track pin (15).
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 6 in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in the figure 1, the downhole throwing and fishing tool capable of being released comprises a steel wire rope (1), a rope cap (2), a weighting rod (3), a jar upper part (4), a jar lower part (5), an upper connector (6), an outer cylinder (7), a central connecting pipe (8), a track groove sleeve (9), a bearing (10), a bearing connector (11), a claw (12), a lower connector (13), a throwing and fishing piece (14) and a track pin (15); the steel wire rope (1) of the upper pendant part is connected with the rope cap (2); the rope cap (2) is connected with the weighting rod (3) through threads; the weighting rod (3) is connected with the upper part of the upper part (4) of the jar through threads; the upper part (4) of the jar is connected with the lower part (5) of the jar through a pin rod; the lower part (5) of the jar is connected with the upper connector (6) through threads;
The outer part of the lower end of an upper connector (6) of the lower locking part is matched with the inner part of the upper end of the outer cylinder (7), the inner part of the lower end of the upper connector (6) is connected with the upper end of a central connecting pipe (8) through threads, the inner part of the lower end of the upper connector (6) is matched with the inner part of the outer cylinder (7), and a step is arranged on the outer surface of the middle part of the upper connector (6); the top end of the outer barrel (7) is provided with a step, the middle part of the outer barrel (7) is provided with a pin hole with threads, the lower end of the outer barrel (7) is provided with a conical surface, and the lower end of the outer barrel (7) is internally provided with a step; the upper end and the lower end of the central connecting pipe (8) are provided with threads which are connected with the upper connector (6) and the bearing connector (11); the upper end and the lower end of the track groove sleeve (9) are connected with a pair of bearings (10) through steps, the track groove sleeve (9) is matched with the outer cylinder (7), the steps are arranged at the upper end and the lower end of the track groove sleeve (9), and the outer part of the middle section of the track groove sleeve (9) is provided with track grooves with half-empty-full track alternation for controlling the lower joint (13) to be at the axial position; the bearing (10) is provided with a pair of upper ends and lower ends which are distributed at the track groove sleeve (9), and the inner ring of the bearing (10) is provided with steps; the inner part of the upper end of the bearing joint (11) is connected with the central connecting pipe (8) through threads, a step is arranged outside the middle section of the bearing joint (11), and threads are arranged outside the lower end of the bearing joint (11); the inside of the upper end of the claw (12) is provided with a step, the outside of the middle section of the claw (12) is provided with a step, and the lower end of the claw (12) is provided with a D-shaped bulge and a chamfer angle for facilitating axial movement; the left end of the lower joint (13) is internally connected with the bearing joint (11) through threads, a step is arranged in the lower joint (13), a groove is formed in the middle section of the lower joint (13), a boss is arranged at the lower end of the lower joint (13), and a conical surface is arranged at the tail end of the boss; the upper end face of the track pin (15) is provided with an inner hexagonal counter bore which is convenient to install and detach, the outer surface of the upper end of the track pin (15) is provided with threads, the lower end of the track pin (15) is provided with a cylinder with a smooth surface, and the cylinder is installed in a threaded pin hole outside the outer cylinder (7);
The upper end part of the fished part (14) is designed with a wedge-shaped surface which is attached to the lower end surface of the outer cylinder (7), and a groove is arranged in the upper end of the fished part (14).
Referring to fig. 2, a plurality of metal spring plates with certain deflection are circumferentially distributed at the lower end of the claw (12), and metal protrusions are arranged at the tail ends of the metal spring plates and can be combined with the inner grooves at the upper end of the fished-out piece (14) to drive the fished-out piece (14) to be lifted upwards; the step is arranged outside the middle section of the claw (12), can be in contact with the step inside the lower end of the outer barrel (7), prevents the claw (12) from falling off, determines the sequence that the claw (12) and the lower connector (13) are separated from the upper port of the thrown and fished piece (14) in the releasing stage of the throwing tool, and ensures that the releasing process is free from blocking.
Referring to fig. 3, the inner step at the upper end of the claw (12) is arranged on the outer step at the upper end of the bearing joint (11), so that the claw (12) is driven by the lower joint (13) to lift the fished part (14) after the tool locking action is completed.
Referring to fig. 4, in one example of the present invention, a fishing example; specifically, in the working state shown as 401 before salvaging, the track pin (15) is positioned in the whole track 901; the throwing and fishing assembly is connected with a rope cap (2) through an upper end steel wire rope (1), and is placed into a well to be abutted with a fished piece through the conical surface at the lower end of an outer barrel (7); continuing to drop, pushing all the internal parts to move downwards under the action of the weighting rod (3) until the tension of the steel wire rope (1) suddenly changes, wherein the track pin (15) is positioned at an extreme position, the upper end of the claw (12) falls into an inner groove at the upper end of the fished part (14) under the pushing of the bearing joint (11), and the working state shown by 402 is reached; the wire rope (1) is lifted up fast, the whole inside is lifted up, the lower joint (13) slides up until the upper end face contacts with the inner step of the upper end of the claw (12), the lower end step face contacts with the inner surface of the clamping buckle of the claw (12), the clamping buckle cannot fall off, the track pin (15) is positioned in the through track 902, the middle section outer step of the upper joint (6) contacts with the inner step of the upper end of the outer cylinder (7), the track pin (15) is not stressed, the stress points are steps, the working state shown by 403 is reached, and the salvaging work of the thrown fishing piece (14) is completed through upward lifting.
Referring to fig. 5, in one embodiment of the present invention; specifically, the track pin (15) is located in the through track 902 in the working state shown as 501 before putting, and is the same as the working state of 401; continuing to unwind until the pressure of the steel wire rope suddenly changes and the working state shown by 502 is reached; at the moment, the track pin (15) is positioned at the extreme position of the upper end of the track groove sleeve (9), and the claw (12) is separated from the lower joint (13); lifting the steel wire rope upwards, enabling the track pin (15) to fall into the half track 903, fixing the relative positions of the clamping jaw (12) and the lower joint (13), and reaching the working state shown by 503; and continuing to lift the steel wire rope upwards, and enabling the lower end buckle of the claw (12) to shrink towards the center under the interaction of the chamfer and the inclined plane, so that the claw is separated from the inner groove at the upper end of the thrown and fished piece (14), and the claw reaches the working state shown by 504, thereby realizing the throwing and fished piece (14).
Referring to fig. 6, eight tracks are distributed on the outer surface of the track groove sleeve (9), and the tracks are alternated from a full track 901 to a through track 902 to a half track 903; when the track groove sleeve (9) and the outer cylinder (7) slide relatively, the track pins (15) symmetrically arranged in the threaded pin holes of the outer cylinder (7) interact with the tracks outside the track groove sleeve (9), the track groove sleeve (9) rotates around the central connecting pipe (8), the track pins (15) switch the tracks, and the lower joint (13) reaches different axial positions so as to limit the disengagement of the lower end buckles of the clamping jaws (12); when the throwing and fishing assembly is connected to the throwing and fishing tool, the track pin (15) is positioned in the through track 902, and at the moment, the track pin (15) is stressed by steps connected among the components, so that the quality of the thrown and fished piece (14) is not born, and the track pin (15) is prevented from being sheared.
In the embodiment, the D-shaped surface of the clamping jaw (12) at the lower end is provided with saw teeth, so that the contact surface is roughened, and the chamfer inclination is increased, so that the clamping jaw can be used for salvaging a salvaged tool without an internal salvaging groove, and the application range of the clamping jaw is further enlarged.
For convenience of description, the description of the relative positional relationship of each component is described according to the layout mode of fig. 1 in the specification, for example: the positional relationships of front, back, left, right, up, down, and the like are determined in accordance with the layout of fig. 1 of the specification, and are merely for convenience of description and to simplify the description, and are not indicative or implying that the apparatus or elements in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Claims (1)
1. A releasable snap-in downhole casting tool comprising: the device comprises a steel wire rope (1), a rope cap (2), a weighting rod (3), a jar upper part (4), a jar lower part (5), an upper connector (6), an outer cylinder (7), a central connecting pipe (8), a track groove sleeve (9), a bearing (10), a bearing connector (11), a claw (12), a lower connector (13), a salvaged piece (14) and a track pin (15);
The method is characterized in that: the steel wire rope (1) is connected into the rope cap (2); the rope cap (2) is connected with the weighting rod (3) through threads; the weighting rod (3) is connected with the upper part of the upper part (4) of the jar through threads; the upper part (4) of the jar is connected with the lower part (5) of the jar through a pin rod; the lower part (5) of the jar is connected with the upper connector (6) through threads;
The outer part of the lower end of the upper connector (6) is matched with the inner part of the upper end of the outer cylinder (7), the inner part of the lower end of the upper connector (6) is connected with the upper end of the central connecting pipe (8) through threads, the inner part of the lower end of the upper connector (6) is matched with the inner part of the outer cylinder (7), and a step is arranged on the outer surface of the middle part of the upper connector (6); the top end of the outer barrel (7) is provided with a step, the middle part of the outer barrel (7) is provided with a pin hole with threads, the lower end of the outer barrel (7) is provided with a conical surface, and the lower end of the outer barrel (7) is internally provided with a step; the upper end and the lower end of the central connecting pipe (8) are provided with threads which are connected with the upper connector (6) and the bearing connector (11); the upper end and the lower end of the track groove sleeve (9) are connected with a pair of bearings (10) through steps, the track groove sleeve (9) is matched with the outer cylinder (7), the steps are arranged at the upper end and the lower end of the track groove sleeve (9), eight tracks are distributed on the outer surface of the track groove sleeve (9), and the eight tracks are alternately distributed from a full track (901) to a through track (902) to a half track (903); the bearing (10) is provided with a pair of upper ends and lower ends which are distributed at the track groove sleeve (9), and the inner ring of the bearing (10) is provided with steps; the inner part of the upper end of the bearing joint (11) is connected with the central connecting pipe (8) through threads, a step is arranged outside the middle section of the bearing joint (11), and threads are arranged outside the lower end of the bearing joint (11); the inside of the upper end of the claw (12) is provided with a step, the outside of the middle section of the claw (12) is provided with a step, and the lower end of the claw (12) is provided with a D-shaped bulge and a chamfer; the inner part of the upper end of the lower joint (13) is connected with the bearing joint (11) through threads, a salvaging groove is formed in the lower joint (13), a groove is formed in the middle section of the lower joint (13), a boss is arranged at the lower end of the lower joint (13), and a conical surface is arranged at the tail end of the boss; the upper end face of the track pin (15) is provided with an inner hexagonal counter bore, the outer surface of the upper end of the track pin (15) is provided with threads, and the lower end of the track pin (15) is provided with a cylinder with a smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211331518.4A CN115584943B (en) | 2022-10-28 | 2022-10-28 | Buckle type downhole throwing and fishing tool capable of being released |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211331518.4A CN115584943B (en) | 2022-10-28 | 2022-10-28 | Buckle type downhole throwing and fishing tool capable of being released |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115584943A CN115584943A (en) | 2023-01-10 |
| CN115584943B true CN115584943B (en) | 2024-04-16 |
Family
ID=84781807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211331518.4A Active CN115584943B (en) | 2022-10-28 | 2022-10-28 | Buckle type downhole throwing and fishing tool capable of being released |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115584943B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999058815A1 (en) * | 1998-03-27 | 1999-11-18 | Weatherford International, Inc. | Downhole pump installation/removal system and method |
| CN201857914U (en) * | 2010-11-11 | 2011-06-08 | 中国石油天然气集团公司 | Barrel type jar for wireline operation |
| EP2955318A1 (en) * | 2014-06-10 | 2015-12-16 | Tercel IP Limited | Downhole swivel sub and method for releasing a stuck object in a wellbore |
| CN105863544A (en) * | 2016-05-09 | 2016-08-17 | 西南石油大学 | Slip type hydraulic control inner fishing tool |
| CN206299368U (en) * | 2016-12-13 | 2017-07-04 | 西安石油大学 | A kind of underground throttle device of easy deblocking |
| CN106988700A (en) * | 2017-04-11 | 2017-07-28 | 西南石油大学 | A kind of high frequency week pendulum releasing tool |
| CN207315282U (en) * | 2017-10-25 | 2018-05-04 | 中国石油集团渤海钻探工程有限公司 | A kind of underground restrictor fishing tool |
| CN216841535U (en) * | 2022-01-11 | 2022-06-28 | 牡丹江通用石油工具有限公司 | Integrated abandoned well casing cutting fisher |
| CA3155310A1 (en) * | 2021-04-15 | 2022-10-15 | Canadian Casing Accessories Inc. | Modified casing buoyancy system and methods of use |
-
2022
- 2022-10-28 CN CN202211331518.4A patent/CN115584943B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999058815A1 (en) * | 1998-03-27 | 1999-11-18 | Weatherford International, Inc. | Downhole pump installation/removal system and method |
| CN201857914U (en) * | 2010-11-11 | 2011-06-08 | 中国石油天然气集团公司 | Barrel type jar for wireline operation |
| EP2955318A1 (en) * | 2014-06-10 | 2015-12-16 | Tercel IP Limited | Downhole swivel sub and method for releasing a stuck object in a wellbore |
| CN105863544A (en) * | 2016-05-09 | 2016-08-17 | 西南石油大学 | Slip type hydraulic control inner fishing tool |
| CN206299368U (en) * | 2016-12-13 | 2017-07-04 | 西安石油大学 | A kind of underground throttle device of easy deblocking |
| CN106988700A (en) * | 2017-04-11 | 2017-07-28 | 西南石油大学 | A kind of high frequency week pendulum releasing tool |
| CN207315282U (en) * | 2017-10-25 | 2018-05-04 | 中国石油集团渤海钻探工程有限公司 | A kind of underground restrictor fishing tool |
| CA3155310A1 (en) * | 2021-04-15 | 2022-10-15 | Canadian Casing Accessories Inc. | Modified casing buoyancy system and methods of use |
| CN216841535U (en) * | 2022-01-11 | 2022-06-28 | 牡丹江通用石油工具有限公司 | Integrated abandoned well casing cutting fisher |
Non-Patent Citations (2)
| Title |
|---|
| 可丢手滑块捞矛的开发和应用;张兴华, 栾林明, 黄煦, 张书琼, 崔日随, 王林明, 金朝苏;石油机械;20030410(第04期);全文 * |
| 绳索作业工具串;刘杰;石油机械;19930830(第08期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115584943A (en) | 2023-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6253845B1 (en) | Roller for use in a spinner apparatus | |
| EP2808480B1 (en) | Self-aligning pipe gripping assembly and method of making and using the same | |
| CN101999031A (en) | Jointed spearhead assembly | |
| US4614462A (en) | Rotation device for a foundation pile | |
| SE458511B (en) | TOOLS FOR AUTOMATIC RECOVERY OF PIN SCREWS | |
| EP3599341B1 (en) | Handling and recovery devices for tubular members and associated methods | |
| CN115584943B (en) | Buckle type downhole throwing and fishing tool capable of being released | |
| EP0286128A2 (en) | Clutching means adapted for tapping attachment | |
| CN210768656U (en) | Quick detachable drilling rod and drilling rod auto-control handling equipment thereof | |
| CN111140197B (en) | Underground steel wire rope fisher | |
| EP0878434A2 (en) | Hand operated chain block | |
| CA2454227C (en) | Torque anchor | |
| CN110552640A (en) | quick detachable drilling rod and drilling rod auto-control handling equipment thereof | |
| CN215980545U (en) | Radial convex tongue clutch | |
| CN107965287B (en) | Clamping device and method for fishing spearhead of drilling tool | |
| CN113070845B (en) | Remote gripping tool reliable in operation and free of maintenance | |
| WO2020220210A1 (en) | Electric winch | |
| EP2252433B1 (en) | A coupling | |
| US4620498A (en) | Device for limiting the rotational movement of the external part of the swivel of a sail roller for sailing boats | |
| CN219864921U (en) | Fishing device for high-strength clamping oil pipe | |
| CN214274243U (en) | One-way non-return bearing mechanism | |
| CN117948063B (en) | Petroleum tool grabbing and placing device | |
| CN220948477U (en) | ROV nondestructive disconnection cable releasing mechanism | |
| CN113530482B (en) | Lead printing device | |
| CN213319901U (en) | Power structure of automatic assembly machine for brake pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |