CN109763785A - A kind of hydraulic anchoring device and its application method in heavy load salvage tool - Google Patents
A kind of hydraulic anchoring device and its application method in heavy load salvage tool Download PDFInfo
- Publication number
- CN109763785A CN109763785A CN201910243535.4A CN201910243535A CN109763785A CN 109763785 A CN109763785 A CN 109763785A CN 201910243535 A CN201910243535 A CN 201910243535A CN 109763785 A CN109763785 A CN 109763785A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- push rod
- anchoring device
- pressure
- check valve
- 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
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 8
- 238000010008 shearing Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims 1
- 238000004891 communication Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of hydraulic anchoring device in heavy load salvage tool, which includes: lower contact, and the lower contact is connected with fishing socket；Push rod, the lower end of the push rod are connect with the lower contact, are arranged on the push rod fluted；Main body, the main body is internally provided with hydraulic storehouse, the bottom in the hydraulic storehouse is floating piston moving up and down, the push rod, which runs through, to be slidably arranged in the main body, the floating piston is fixedly connected on the push rod, the top of the main body is sequentially provided with the first ball-and-seat, slips portion, the second ball-and-seat from top to bottom, and the first end of second ball-and-seat is connected to the hydraulic storehouse, and the second end of second ball-and-seat is connected to the pressure chamber in the slips portion.Beneficial effects of the present invention are that fishing tool is anchored on oil pipe or internal surface of sleeve pipe, solves the problems, such as that steel wire or cable tension are inadequate by increasing anchoring device.
Description
Technical Field
The invention belongs to the field of fishing engineering, and particularly relates to a hydraulic anchoring device for a heavy-load fishing tool and a using method thereof.
Background
During the process of oil drilling, particularly in a newly explored area, due to the lack of sufficient knowledge on the characteristics of underground geological structures and lithology, downhole accidents are often encountered during the drilling operation. Among these accidents, there is a case where the drilling tool drops and gets stuck in the well due to a problem of the material itself or a human mishandling. Such accidents consume a large amount of manpower, material resources and financial resources, and even result in the scrapping of part of well sections and even the whole well, which brings great loss to the whole drilling operation. In this process, the drilling tools that fall into the well due to an accident are called fish.
The existing fishing tool cannot realize the fishing operation of the fallen fish with larger weight because the existing fishing tool is limited by insufficient tension of a steel wire or a cable.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a hydraulic anchoring device for a heavy-load fishing tool, which can anchor the tool on the inner wall of an oil pipe or a casing pipe by adding the anchoring device, thereby solving the problem of insufficient tension of a steel wire or a cable.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic anchoring device for use in a heavy duty fishing tool, the hydraulic anchoring device comprising: the lower joint is connected with the overshot; the lower end of the push rod is connected with the lower connector, and a groove is formed in the push rod; the hydraulic pressure clamping device comprises a main body, wherein a hydraulic chamber is arranged in the main body, a floating piston capable of moving up and down is arranged at the bottom of the hydraulic chamber, a push rod is arranged in the main body in a penetrating and sliding manner, the floating piston is fixedly connected to the push rod, a first check valve, a slip part and a second check valve are sequentially arranged at the top of the main body from top to bottom, a first end of the second check valve is communicated with the hydraulic chamber, a second end of the second check valve is communicated with a pressure chamber of the slip part, and when the pressure in the pressure chamber of the slip part reaches a preset pressure, slips of the slip part protrude to the outer side of the main body; and
the bottom of the upper joint is connected with the main body through a first pin; wherein,
the groove is communicated with the hydraulic cabin.
Preferably, a pressure balance valve is provided on the main body, one end of the pressure balance valve communicates with the outside of the hydraulic anchoring device, and the other end of the pressure balance valve communicates with the pressure chamber.
Preferably, the pressure balancing valve is such that the pressure per square meter in the pressure chamber is less than or equal to 15 tons.
Preferably, the recess is located on the underside of the first check valve, the first check valve being interrupted by the side wall of the push rod, the recess being aligned with the first check valve, the first check valve communicating the exterior of the hydraulic anchor with the hydraulic reservoir.
Preferably, the first check valve and the second check valve allow pressure inside the hydraulic anchoring device to leak out to the outside of the hydraulic anchoring device in a single direction.
Preferably, the lower joint is fixedly connected with the lower end of the push rod through a second pin.
Preferably, a communicating groove is formed in the side wall of the push rod and is communicated with the groove and the hydraulic bin.
Preferably, when the groove on the push rod fails to be lifted to the position of the first check valve, the push rod meets the clamp, and the solving step comprises the following steps: shearing off the first pin, and enabling the main body to slide downwards under the self weight to enable the first check valve to be aligned with the groove, so that the pressure in the pressure chamber is leaked; the push rod is pushed down, so that the pressure in the pressure chamber is leaked.
Preferably, the lower connector and/or the device below the lower connector are blocked, and the solving step comprises the following steps: and shearing the second pin to separate the lower joint from the push rod.
Compared with the prior art, the invention has the beneficial effects that:
1. the fishing tool can be put into a well by a steel wire or a cable, is anchored to the inner wall of an oil pipe or a sleeve by the fishing tool, and finishes fishing work by pulling up or pushing down the fishing barrel by 1-20 tons of force, thereby solving the problems of insufficient steel wire/cable tension, high cost of a continuous oil pipe and uncontrollable tool in the conventional fishing task;
2. the structure is simple, the sealing elements are few, the anchoring force is strong, the cost is low, the anchoring is reliable, and the anchoring is easy to remove;
3. the fishing tool is stuck to cut off the second pin, the tool at the upper part of the second pin can be lifted up, and the fishing barrel is left in the well.
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 view of the internal structure of the present invention.
Fig. 2 is an external schematic view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
1-2, the present embodiment provides a hydraulic anchoring device for use in a heavy duty fishing tool, the hydraulic anchoring device comprising: the lower joint 11, the lower joint 11 links with the overshot; the lower end of the push rod 12 is connected with the lower joint 11, and a groove 121 is formed in the push rod 12; the hydraulic pressure clamping device comprises a main body 13, wherein a hydraulic chamber 7 is arranged inside the main body 13, a floating piston 8 capable of moving up and down is arranged at the bottom of the hydraulic chamber 7, a push rod 12 is arranged in the main body 13 in a penetrating and sliding manner, the floating piston 8 is fixedly connected to the push rod 12, a first check valve 3, a slip part and a second check valve 6 are sequentially arranged at the top of the main body 13 from top to bottom, a first end of the second check valve 6 is communicated with the hydraulic chamber 7, a second end of the second check valve 6 is communicated with a pressure chamber 14 of the slip part, and when the pressure in the pressure chamber 14 of the slip part reaches a preset pressure, a slip 5 of the slip part protrudes towards the outer side of; and
the bottom of the upper joint 1 is connected with the main body 13 through a first pin 2; wherein,
the groove 121 communicates with the hydraulic reservoir 7.
The main body 13 is provided with a pressure balance valve 4, one end of the pressure balance valve 4 is communicated with the outside of the hydraulic anchoring device, and the other end of the pressure balance valve 4 is communicated with a pressure chamber 14.
The pressure equalization valve 4 causes a pressure per square meter in the pressure chamber 14 of 15 tons or less.
When the groove 121 is located on the lower side of the first check valve 3, the first check valve 3 is intercepted by the side wall of the push rod 12, and when the groove 121 is aligned with the first check valve 3, the first check valve 3 communicates the outside of the hydraulic anchoring device with the hydraulic reservoir 7.
The first check valve 3 and the second check valve 6 make the pressure inside the hydraulic anchoring device leak to the outside of the hydraulic anchoring device in a single direction.
The lower joint 11 is fixedly connected with the lower end of the push rod 12 through a second pin 10.
The lateral wall of the push rod 12 is provided with a communicating groove which communicates the groove 121 and the hydraulic bin 7.
When the groove 121 on the push rod 12 fails to be lifted to the first check valve 3, the push rod 12 is stuck, and the solution steps include: shearing off the first pin 2, the body 13 slides downwards under its own weight so that the first check valve 3 is aligned with the recess 121, thus allowing the pressure in the pressure chamber 14 to escape; the push rod 12 is pushed down so that the pressure in the pressure chamber 14 leaks out.
The lower joint 11 and/or the device at the lower part thereof are blocked, and the solving steps comprise: the second pin 10 is sheared, causing the lower sub 11 to separate from the push rod 12.
The in-process that the push rod upwards pulled at first drives the liquid compression of floating piston in with hydraulic pressure storehouse, and liquid flows into pressure chamber from the second check valve, and along with the pressure in the pressure chamber crescent, the slips is salient outside the device gradually, and until the slips top on the pipeline inner wall in the outside, the anchoring of device has also just also been realized. At this time, if the fishing is successful, the push rod is further pulled upwards, and the pressure applied to the slips is ensured to be constant through the pressure balance valve leakage pressure (the part is higher than 15t per square meter), and the push rod can continue to rise until the groove of the push rod is aligned with the first check valve, the pressure is leaked from the first check valve, the slips are released from anchoring, and the whole device is pulled up together. If the fishing is unsuccessful, the groove cannot be lifted to the first check valve by further pulling the push rod upwards, on one hand, the pressure inside the slip pressure chamber is reduced to contact and anchor the slip pressure chamber through pushing the push rod downwards, on the other hand, the first pin (needing 12 tons of shearing force per square meter) can be cut off, so that the main body slides downwards to enable the first check valve to descend to the groove, the pressure relief can be completed, the anchoring is released, and the whole device is taken out.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (9)
1. A hydraulic anchoring device for use in a heavy duty fishing tool, the hydraulic anchoring device comprising:
the lower joint (11), the said lower joint (11) links with overshot;
the lower end of the push rod (12) is connected with the lower joint (11), and a groove (121) is formed in the push rod (12);
the hydraulic clamping device comprises a main body (13), wherein a hydraulic chamber (7) is arranged inside the main body (13), a floating piston (8) capable of moving up and down is arranged at the bottom of the hydraulic chamber (7), a push rod (12) is arranged in the main body (13) in a penetrating and sliding mode, the floating piston (8) is fixedly connected to the push rod (12), a first check valve (3), a slip part and a second check valve (6) are sequentially arranged at the top of the main body (13) from top to bottom, a first end of the second check valve (6) is communicated with the hydraulic chamber (7), a second end of the second check valve (6) is communicated with a pressure chamber (14) of the slip part, and when the pressure in the pressure chamber (14) of the slip part reaches a preset pressure, a slip (5) of the slip part protrudes towards the outer side of the main body (13); and
the bottom of the upper joint (1) is connected with the main body (13) through a first pin (2);
wherein,
the groove (121) is communicated with the hydraulic cabin (7).
2. Hydraulic anchoring device for use in heavy duty fishing tools according to claim 1, characterized in that a pressure equalization valve (4) is provided on the body (13), one end of the pressure equalization valve (4) communicating with the outside of the hydraulic anchoring device and the other end of the pressure equalization valve (4) communicating with the pressure chamber (14).
3. A hydraulic anchoring device for use in heavy duty fishing tools according to claim 2, characterized in that the pressure balancing valve (4) is such that the pressure per square meter inside the pressure chamber (14) is less than or equal to 15 tons.
4. Hydraulic anchoring device for use in heavy duty fishing tools according to claim 1, characterized by the fact that the first check valve (3) is intercepted by the side wall of the push rod (12) when the groove (121) is located on the lower side of the first check valve (3), the first check valve (3) communicating the outside of the hydraulic anchoring device with the hydraulic capsule (7) when the groove (121) is aligned with the first check valve (3).
5. Hydraulic anchoring device for use in heavy duty fishing tools according to claim 1, characterized in that the first and second check valves (3, 6) each allow one-way escape of the pressure inside the hydraulic anchoring device to the outside of the hydraulic anchoring device.
6. Hydraulic anchoring device for use in heavy duty fishing tools according to claim 1, characterized in that the lower joint (11) is fixedly connected with the lower end of the push rod (12) by means of a second pin (10).
7. The hydraulic anchoring device for heavy-duty fishing tools according to claim 1, characterized in that the side wall of the push rod (12) is opened with a communication groove, which communicates the groove (121) with the hydraulic bin (7).
8. The use method of the hydraulic anchoring device in heavy-load fishing is characterized in that when a groove (121) on a push rod (12) is not lifted to a first check valve (3), the push rod (12) meets a clamp, and the solution steps comprise:
shearing off the first pin (2), and sliding down the main body (13) under the self-weight to align the first check valve (3) with the groove (121), so that the pressure in the pressure chamber (14) is leaked;
the push rod (12) is pushed down, so that the pressure in the pressure chamber (14) is leaked.
9. The use method of the hydraulic anchoring device in heavy-load fishing is characterized in that a lower joint (11) and/or a device at the lower part of the lower joint are/is blocked, and the solution steps comprise:
the second pin (10) is sheared, so that the lower joint (11) is separated from the push rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243535.4A CN109763785B (en) | 2019-03-28 | 2019-03-28 | Hydraulic anchoring device for heavy-duty fishing tool and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243535.4A CN109763785B (en) | 2019-03-28 | 2019-03-28 | Hydraulic anchoring device for heavy-duty fishing tool and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109763785A true CN109763785A (en) | 2019-05-17 |
| CN109763785B CN109763785B (en) | 2024-01-26 |
Family
ID=66459972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910243535.4A Active CN109763785B (en) | 2019-03-28 | 2019-03-28 | Hydraulic anchoring device for heavy-duty fishing tool and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109763785B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196484A (en) * | 2020-09-08 | 2021-01-08 | 中国石油天然气股份有限公司 | Hydraulic anchor releasing tool |
| CN112943143A (en) * | 2021-01-12 | 2021-06-11 | 中国石油天然气股份有限公司 | Hydraulic salvaging pipe column and salvaging method for coiled tubing of downhole choke |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2085893A1 (en) * | 1970-04-07 | 1971-12-31 | Schlumberger Technology Corp | Borehole packing with stopper telescopi-cally positioned - in anchoring unit |
| CN2345686Y (en) * | 1998-01-13 | 1999-10-27 | 辽河石油勘探局井下作业公司 | Retrievable bridging plug |
| CN2479188Y (en) * | 2001-04-28 | 2002-02-27 | 张永存 | Packer |
| CN102587852A (en) * | 2012-03-18 | 2012-07-18 | 荆州市赛瑞能源技术有限公司 | Liner hanger and setting tool |
| CN105089531A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Oil field horizontal well oil production pipe string breaking and falling prevention well device |
-
2019
- 2019-03-28 CN CN201910243535.4A patent/CN109763785B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2085893A1 (en) * | 1970-04-07 | 1971-12-31 | Schlumberger Technology Corp | Borehole packing with stopper telescopi-cally positioned - in anchoring unit |
| CN2345686Y (en) * | 1998-01-13 | 1999-10-27 | 辽河石油勘探局井下作业公司 | Retrievable bridging plug |
| CN2479188Y (en) * | 2001-04-28 | 2002-02-27 | 张永存 | Packer |
| CN102587852A (en) * | 2012-03-18 | 2012-07-18 | 荆州市赛瑞能源技术有限公司 | Liner hanger and setting tool |
| CN105089531A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Oil field horizontal well oil production pipe string breaking and falling prevention well device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196484A (en) * | 2020-09-08 | 2021-01-08 | 中国石油天然气股份有限公司 | Hydraulic anchor releasing tool |
| CN112196484B (en) * | 2020-09-08 | 2022-04-26 | 中国石油天然气股份有限公司 | Hydraulic anchor releasing tool |
| CN112943143A (en) * | 2021-01-12 | 2021-06-11 | 中国石油天然气股份有限公司 | Hydraulic salvaging pipe column and salvaging method for coiled tubing of downhole choke |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109763785B (en) | 2024-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1888871B1 (en) | Casing and drill pipe filling and circulation apparatus | |
| CN109763785A (en) | A kind of hydraulic anchoring device and its application method in heavy load salvage tool | |
| CN108999583B (en) | Pressure maintaining cylinder upper sealing structure with explosion-proof function | |
| CN116927675B (en) | Blowout prevention connector with pressure release mechanism for oil pump | |
| CN207296937U (en) | High-pressure oil-gas well hydraulic oil pipe anchoring device | |
| CN110761735A (en) | Ball-carrying type dissolvable bridge plug | |
| CN104806196A (en) | Casing floating system for horizontal well | |
| CN107542418A (en) | High-pressure oil-gas well hydraulic oil pipe anchoring device and its method of work | |
| CN209817992U (en) | Hydraulic anchoring device for heavy-load fishing tool | |
| CN109779538B (en) | Petroleum downhole operation device | |
| WO2010089572A1 (en) | A downhole tubular connector | |
| CN109538134B (en) | Application method of petroleum underground safety joint | |
| CN211115882U (en) | Horizontal drilling rope coring hydraulic joint device | |
| US20170335666A1 (en) | Combined casing fill-up and drill pipe flowback tool and method | |
| US8770275B2 (en) | Fill up and circulating tool with well control feature | |
| CN215860057U (en) | Differential pressure mechanical oil extraction anchor structure | |
| CN114482871A (en) | Drilling rod assembly convenient to salvage after fracture for oil exploitation | |
| CN214944177U (en) | CO (carbon monoxide)2Oil well driving non-killing oil production pipe column | |
| CN206233895U (en) | Water plugging of horizontal well process pipe string | |
| CN214944120U (en) | Hydraulic control type drill rod dynamic anchor | |
| CN113738314B (en) | Integrated pump-suction combined operation pressurized rotary pump pipe column and plugging tool and method | |
| CN206942692U (en) | A kind of well repairing device combined by hydraulic tongs with wellhead slip | |
| CN205477528U (en) | Novel well head coupling blocks up valve | |
| CN215718603U (en) | Pressure butt-buckling sealing oil pipe plug | |
| CN206608130U (en) | Fluid pressure type fishing spear |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211018 Address after: 201306 floor 1, building 1, No. 2099, Feidu Road, Nanhui new town, Lingang New District, Pudong New Area, Shanghai Applicant after: ZHONGMAN PETROLEUM AND NATURAL GAS GROUP Co.,Ltd. Applicant after: Aksu Zhongman oil and gas exploration and Development Co.,Ltd. Address before: Room 1203, 1900 Shangcheng Road, Pudong New Area, Shanghai, 200120 Applicant before: ZHONGMAN PETROLEUM AND NATURAL GAS GROUP Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |