CN109854186A - Safety joint under a kind of fluffing of moulding sand formula oil well - Google Patents
Safety joint under a kind of fluffing of moulding sand formula oil well Download PDFInfo
- Publication number
- CN109854186A CN109854186A CN201910113817.2A CN201910113817A CN109854186A CN 109854186 A CN109854186 A CN 109854186A CN 201910113817 A CN201910113817 A CN 201910113817A CN 109854186 A CN109854186 A CN 109854186A
- Authority
- CN
- China
- Prior art keywords
- top connection
- ring
- sealing
- sand
- sealing piston
- 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.)
- Pending
Links
Abstract
The present invention relates to safety joints under a kind of fluffing of moulding sand formula oil well.Its technical solution is: including top connection and lower contact, lower contact is connected in the lower part of top connection, sealing steel bushing is housed in the outer sheath of top connection, it is equipped between sealing steel bushing and the top of top connection and cuts ring, it is equipped with safe shear pin on the top for cutting ring, is equipped with sealing piston between steel bushing and the lower part of top connection sealing, the lower part of sealing piston and top connection passes through left-hand thread and connects, it is cutting between ring and sealing piston as impact cavity, is offering fluffing of moulding sand hole in the lower part of sealing steel bushing.The beneficial effects of the present invention are: the present invention is able to solve sand card, tubing string is enable to propose safely, prevent workover, in several cases can directly extracted sand-proof pipe, solves the problems, such as that mostly at present is that segmentation is taken out, it is easy to operate, it is time saving and energy saving.
Description
Technical field
The present invention relates to apparatus for work under a kind of oil well, in particular to safety joint under a kind of fluffing of moulding sand formula oil well.
Background technique
In oil and gas development operation, safety joint is the special tool(s) for underground work and flow string.Its effect is
When accident occurs for down-hole string, it can will meet card tubing string and be disengaged from safety joint place, to be further processed creation for accident
Good condition.Safety joint is commonly used in the more complicated construction well of tubular column structure and has in the well of special operation requirement.Mesh
Preceding safety joint common in straight well mainly has back-buckling type and two kinds of shear pin formula.The top connection of back-buckling type safety joint connects under
Head by left hand thread connect, when tubing string underground meet card after, need to rotate clockwise tubing string, if hole condition is complicated, such as encounter sand
When burying, torque is not delivered to position, and safety joint is difficult to open, and success rate is low, and reliability is poor；And conventional shear pin formula safety joint
Upper lower contact only is connected by shear pin, is easy to be influenced by operation and hole condition and cause midway disconnected de- in completion practice, causes operation
Accident.
In addition, will appear the case where sand buries between the tubing string and casing of underground, due to sand under oil well in operation process
The problem of appearance buried, sand-proof pipe, which is easy to block, to be led to not take out, this occurs as soon as workover, workover will cause operation
Heavy workload, economic loss are big.In the prior art, tubing string is proposed using the safety joint of shear pin formula, but buried due to sand
Excessive height sometimes buries the shear pin in safety joint, shear pin can not be made to cut, to can not take out tubing string.In addition, peace
Full connector generally uses positive and negative connector, and in the case where sand buries serious situation, rotation is difficult, does not have safety effect, even if can be taken off,
It is mostly to be taken out by segmentation, it is complicated for operation, it is time-consuming and laborious.In short, in the prior art, without using upper and lower repeated stock
Mode buries this principle to unclamp sand.
Summary of the invention
The purpose of the present invention is to drawbacks described above of the existing technology, provide a kind of fluffing of moulding sand formula petroleum downhole safety
Connector is able to solve sand card, tubing string is enable to propose safely, prevents workover, can be straight by sand-proof pipe in several cases
Extraction is connect, solves the problems, such as that mostly at present is that segmentation is taken out, it is easy to operate, it is time saving and energy saving.
Safety joint under a kind of fluffing of moulding sand formula oil well that the present invention mentions, technical solution is: including top connection (1) and under
Connector (2) is connected with lower contact (2) in the lower part of top connection (1), and sealing steel bushing (5) is housed in the outer sheath of top connection (1),
And sealing steel bushing (5) is fixedly connected with lower contact (2), is equipped between the top and top connection (1) of sealing steel bushing (5) and is cut ring
(4), safe shear pin (3) are equipped on the top for cutting ring, are connect by safe shear pin (3) with the groove of top connection (1) outer wall；Close
It seals between steel bushing (5) and the lower part of top connection (1) and is equipped with sealing piston (8), the lower part of sealing piston (8) and top connection (1) is logical
Left-hand thread (7) connection is crossed, is cutting between ring (4) and sealing piston (8) as impact cavity (6), is being offered in the lower part of sealing steel bushing (5)
Fluffing of moulding sand hole (9), and the inside of fluffing of moulding sand hole (9) is realized by sealing piston (8) and is closed, after safe shear pin (3) is cut, top connection
(1) it drives sealing piston (8) to move up, realizes the opening of fluffing of moulding sand hole (9).
Preferably, above-mentioned ring (4) of cutting is made of upper ring and a lower ring two parts, the outer diameter of upper ring and sealing steel bushing (5) it is outer
Diameter is identical, and safe shear pin (3) is arranged on the inside of upper ring；The outer diameter of lower ring is less than the internal diameter of sealing steel bushing (5), the internal diameter of lower ring
Greater than the outer diameter of top connection (1) lower part, it is mounted on lower ring in the annular space between sealing steel bushing (5) and top connection (1).
Preferably, the bottom for cutting ring (4) be equipped with the first minor arc (10) and the first bayonet (12), the first bayonet (12) be
The major arc that ring (4) bottom milling depth is 3-5 millimeters is cut, the first minor arc (10) of protrusion is formed, at the top of sealing piston (8)
Equipped with the second minor arc (11) and the second bayonet (13), the first bayonet (12) be sealing piston (8) top milling depth be 3-5
The major arc of millimeter forms the second minor arc (11) of protrusion.
Preferably, when moving up sand-proof pipe by well head power device, sand-proof pipe drives top connection (1) Xiang Shangyi
Dynamic, top connection (1) drives sealing piston (8) to move up in impact cavity (6), is moved at the top of sealing piston (8) and cuts ring
(4) bottom makes to cut in the second bayonet (13) that the first minor arc (10) on ring (4) is stuck on sealing piston (8), sealing piston
(8) the second minor arc (11) on is stuck in the first bayonet (12) cut on ring (4), then drives sand-proof pipe by well head power device
When rotating forward, top connection (1) and sealing piston (8) can be driven to unbutton separation.
Preferably, above-mentioned sealing piston (8) includes columnar connection main body (8.1) and sealing stress ring (8.2), connection
The inner wall of main body (8.1) is equipped with left-hand thread (7), is connect by left-hand thread (7) with the outer wall of top connection；The sealing stress ring (8.2)
Columnar structured for what is be inwardly recessed, columnar structured bottom is balance controlled area (8.3), balance controlled area (8.3) by
Power is less than the shearing force of shear pin, and when well head needs to suppress, when pressure is more than 105 megapascal, sealing piston is moved up, and passes through pine
Sand hole (9) pressure release.
The beneficial effects of the present invention are: the sand that the present invention is able to solve tubing string buries problem, tubing string is enable to propose safely, prevented
Only workover in several cases can directly extract sand-proof pipe, solve the problems, such as that mostly at present is that segmentation is taken out, have
Multiple modes of operation；
The present invention can drive sealing piston to move up and down in impact cavity by top connection, when moving up, sealing piston
The bottom for cutting ring is hit at top, and when moving down, the top of lower contact is hit in the bottom of sealing piston, is formed above and below continuous and is hit
It hits, the sand of the annular space between casing and sand-proof pipe buries part loosening, and sand is entered inside sealing steel bushing by fluffing of moulding sand hole, realizes pine
The purpose of sand, and then sand-proof pipe is integrally pulled out into well head；
In addition, then being matched by sealing piston with the special construction for cutting ring when sand-proof pipe can't be proposed well head by upper and lower shock
It closes, sealing piston and the lower part of top connection is separated, are divided into two sections, so that well head is extracted in top connection, dress is salvaged in decentralization again
It sets, remaining lower contact, sealing steel bushing is salvaged into well head, realize that classification is salvaged, to effectively realize the function of safety joint
Energy；
Compared with prior art, impact cavity is increased, realizes and is hit up and down to solve the problems, such as that sand buries, moreover, improving sealing
Piston and the structure for cutting ring, efficiently separate it can also, disengage so that card tubing string will be met from safety joint place, to be thing
Therefore be further processed and create good condition.
Detailed description of the invention
Attached drawing 1 is structural schematic diagram of the invention；
Attached drawing 2 is the structural schematic diagram of sealing piston；
Attached drawing 3 is the structural schematic diagram for cutting ring bottom；
Attached drawing 4 is the structural schematic diagram at the top of sealing piston；
In upper figure: top connection 1, lower contact 2, safe shear pin 3, cut ring 4, sealing steel bushing 5, impact cavity 6, left-hand thread 7, sealing piston 8,
Fluffing of moulding sand hole 9, the first minor arc 10, the second minor arc 11, the first bayonet 12, the second bayonet 13, connection main body 8.1, sealing stress ring
8.2, controlled area 8.3 is balanced.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Safety joint under a kind of fluffing of moulding sand formula oil well that the present invention mentions, technical solution is: including top connection (1) and under
Connector (2) is connected with lower contact (2) in the lower part of top connection (1), and sealing steel bushing (5) is housed in the outer sheath of top connection (1),
And sealing steel bushing (5) is fixedly connected with lower contact (2), is equipped between the top and top connection (1) of sealing steel bushing (5) and is cut ring
(4), safe shear pin (3) are equipped on the top for cutting ring, are connect by safe shear pin (3) with the groove of top connection (1) outer wall；Close
It seals between steel bushing (5) and the lower part of top connection (1) and is equipped with sealing piston (8), the lower part of sealing piston (8) and top connection (1) is logical
Left-hand thread (7) connection is crossed, is cutting between ring (4) and sealing piston (8) as impact cavity (6), is being offered in the lower part of sealing steel bushing (5)
Fluffing of moulding sand hole (9), and the inside of fluffing of moulding sand hole (9) is realized by sealing piston (8) and is closed, after safe shear pin (3) is cut, top connection
(1) it drives sealing piston (8) to move up, realizes the opening of fluffing of moulding sand hole (9).
Referring to attached drawing 1, ring (4) of cutting of the invention is made of upper ring and a lower ring two parts, the outer diameter and sealing steel bushing of upper ring
(5) outer diameter is identical, and safe shear pin (3) is arranged on the inside of upper ring；The outer diameter of lower ring is less than the internal diameter of sealing steel bushing (5), under
The internal diameter of ring is greater than the outer diameter of top connection (1) lower part, and lower ring is made to be mounted on the annular space between sealing steel bushing (5) and top connection (1)
In.
It is of the invention to be equipped with the first minor arc (10) and the first bayonet (12) in the bottom for cutting ring (4) referring to attached drawing 3 and 4, the
One bayonet (12) is the first minor arc (10) of protrusion to be formed, close in the major arc for cutting ring (4) bottom milling depth as 3-5 millimeters
The top for sealing piston (8) is equipped with the second minor arc (11) and the second bayonet (13), and the second bayonet (13) is on the top of sealing piston (8)
The major arc that portion's milling depth is 3-5 millimeters forms the second minor arc (11) of protrusion.
When moving up sand-proof pipe by well head power device, sand-proof pipe drives top connection (1) to move up, top connection
(1) sealing piston (8) are driven to move up in impact cavity (6), sealing piston is moved to the bottom for cutting ring (4) at the top of (8),
Make to cut in the second bayonet (13) that the first minor arc (10) on ring (4) is stuck on sealing piston (8), the in sealing piston (8)
Two minor arcs (11) are stuck in the first bayonet (12) cut on ring (4), then drive sand-proof pipe to rotate forward by well head power device
When, top connection (1) and sealing piston (8) can be driven to unbutton separation.
Referring to attached drawing 2, sealing piston of the invention (8) includes columnar connection main body (8.1) and sealing stress ring
(8.2), the inner wall for connecting main body (8.1) is equipped with left-hand thread (7), is connect by left-hand thread (7) with the outer wall of top connection；It is described sealing by
Power ring (8.2) be inwardly recessed columnar structured, columnar structured bottom be balance controlled area (8.3), balance controlled area
(8.3) stress is less than the shearing force of shear pin, and when well head needs to suppress, when pressure is more than 105 megapascal, sealing piston is to moving up
It is dynamic, pass through fluffing of moulding sand hole (9) pressure release.
The application method of safety joint under a kind of fluffing of moulding sand formula oil well that the present invention mentions, comprising the following steps:
Firstly, top connection (1) is connected sand-proof pipe, lower contact (2) connects sand-proof pipe, by well head power device by it along set
Pipe transfers to underground；
Secondly, needing to be divided into following four situation by well head power device drawing and implemented operation when sand-proof pipe encounters sand and buries:
One, when sand buried depth degree is smaller, by the drawing directly up of well head power device, sand-proof pipe entirely can be pulled out into well head；
Two, when sand-proof pipe can not be pulled out directly by well head power device, the pulling capacity that well head power device is implemented is by cutting
Ring cuts safety nail, and sand-proof pipe drives top connection to move up, and top connection drives sealing piston (8) to move up simultaneously, real
The opening of existing fluffing of moulding sand hole (9), in this way, the sand of the annular space between casing and sand-proof pipe buries loosening, and then sand-proof pipe is integrally pulled out
Well head；
Three, when still sand-proof pipe cannot be pulled out after safety nail cutting, sand-proof pipe is moved up and down by well head power device, it is real
The up-down vibration of existing sand-proof pipe, sand-proof pipe drive top connection (1) to move up and down, due under sealing piston (8) and top connection (1)
Portion is connected by left-hand thread (7), is moved up and down so top connection (1) drives sealing piston (8) to realize in the impact cavity (6), when to
When upper mobile, the bottom for cutting ring (4) is hit at the top of sealing piston (8), and when moving down, the bottom of sealing piston (8) is hit
The top of lower contact forms continuous shock up and down, the sand of the annular space between casing and sand-proof pipe can be made to bury loosening, and sand is logical
It crosses fluffing of moulding sand hole (9) to enter inside sealing steel bushing, realizes the purpose of the fluffing of moulding sand, and then sand-proof pipe is integrally pulled out into well head；
Four, when sand-proof pipe still cannot be proposed well head by operating procedure three, sand-proof pipe is moved up by well head power device,
Sand-proof pipe drives top connection (1) to move up, and top connection (1) drives sealing piston (8) to move up in impact cavity (6), close
The bottom for cutting ring (4) is hit at the top of envelope piston (8), is made to cut the first minor arc (10) on ring (4) and is stuck on sealing piston (8)
In second bayonet (13), the second minor arc (11) in sealing piston (8) is stuck in the first bayonet (12) cut on ring (4), cuts ring
(4) the first minor arc (10) on merges with the second minor arc (11) on sealing piston (8), due to sealing piston (8) and top connection
(1) it is connected between lower part by left-hand thread, rotates forward sand-proof pipe at this time, the lower part of sealing piston (8) and top connection (1) can revolved
It opens, is divided into two sections, so that well head is extracted in top connection, transfer fishing device again, remaining lower contact and sealing steel bushing are salvaged
Well head out realizes that classification is salvaged.
Specific four kinds of situations further illustrate:
The first situation: top connection 1 connects sand-proof pipe, and lower contact 2 connects sand-proof pipe, and sand-proof pipe is drawn by well head power device
It pulls out, when sand buried depth degree is smaller, by the drawing directly up of well head power device, sand-proof pipe entirely can be pulled out into well head.
Second situation: top connection 1 connects sand-proof pipe, and lower contact 2 connects sand-proof pipe, and sand-proof pipe is by well head power device
Drawing, when sand-proof pipe can not be pulled out directly by well head power device, pulling capacity is cut safety nail by cutting ring, sand-proof pipe
Top connection is driven to move up, the sand of the annular space between casing and sand-proof pipe buries part loosening, and then sand-proof pipe is integrally pulled out
Well head.
The third situation: top connection 1 connects sand-proof pipe, and lower contact 2 connects sand-proof pipe, and sand-proof pipe is by well head power device
Drawing, when sand-proof pipe can not be pulled out directly by well head power device, pulling capacity is cut safety nail by cutting ring, works as safety
When nail still cannot pull out sand-proof pipe after cutting, sand-proof pipe is moved up and down by well head power device, realizes the upper of sand-proof pipe
Lower vibration, sand-proof pipe drive top connection 1 to move up and down, since sealing piston 8 is connect with the lower part of top connection 1 by left-hand thread 7, institute
Sealing piston 8 is driven to move down in impact cavity 6 with top connection 1, when moving up, the top of sealing piston 8, which is hit, cuts ring 4
Bottom, when moving down, the top of lower contact is hit in the bottom of sealing piston 8, formed it is continuous hit up and down, casing and anti-
The sand of annular space between sandpipe buries part loosening, and sand is entered inside sealing steel bushing by fluffing of moulding sand hole 9, realizes the purpose of the fluffing of moulding sand,
And then sand-proof pipe is integrally pulled out into well head.
4th kind of situation: top connection 1 connects sand-proof pipe, and lower contact 2 connects sand-proof pipe, and sand-proof pipe is by well head power device
Drawing, when sand-proof pipe can not be pulled out directly by well head power device, pulling capacity is cut safety nail by cutting ring, works as safety
When nail still cannot pull out sand-proof pipe after cutting, sand-proof pipe is moved up and down by well head power device, realizes the upper of sand-proof pipe
Lower vibration, sand-proof pipe drive top connection 1 to move up and down, since sealing piston 8 is connect with the lower part of top connection 1 by left-hand thread 7, institute
Sealing piston 8 is driven to move down in impact cavity 6 with top connection 1, when moving up, the top of sealing piston 8, which is hit, cuts ring 4
Bottom, when moving down, the top of lower contact is hit in the bottom of sealing piston 8, formed it is continuous hit up and down, when well head is dynamic
Power device moves up and down sand-proof pipe, and when still cannot extract sand-proof pipe, sand-proof pipe drives top connection 1 to move up, top connection 1
Sealing piston 8 is driven to move up in impact cavity 6, the top of sealing piston 8 is moved to the bottom for cutting ring 4, makes to cut on ring 4
First minor arc 10 is stuck in the second bayonet 13 in sealing piston 8, and the second minor arc 11 in sealing piston 8, which is stuck in, to be cut on ring 4
In first bayonet 12, the first minor arc 10 cut on ring 4 merges with the second minor arc 11 in sealing piston 8, due to sealing piston 8 with
It is connected between the lower part of top connection 1 by left-hand thread, rotates forward sand-proof pipe, sealing piston 8 and the lower part of top connection 1 are separated, are divided into
Two sections, so that well head is extracted in top connection, fishing device is transferred again, and remaining lower contact, sealing steel bushing are salvaged into well head, it is real
Now classification is salvaged.
The above, is only part preferred embodiment of the invention, and anyone skilled in the art may benefit
Equivalent technical solution is modified or is revised as with the technical solution of above-mentioned elaboration.Therefore, technology according to the present invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (1)
1. safety joint under a kind of fluffing of moulding sand formula oil well, including top connection (1) and lower contact (2) connect in the lower part of top connection (1)
Lower contact (2) are connected to, it is characterized in that: the outer sheath in top connection (1) is equipped with sealing steel bushing (5), and steel bushing (5) is sealed and is connect under
Head (2) is fixedly connected, and is equipped between the top and top connection (1) of sealing steel bushing (5) and is cut ring (4), is equipped on the top for cutting ring
Safe shear pin (3) is connect by safe shear pin (3) with the groove of top connection (1) outer wall；In sealing steel bushing (5) and top connection (1)
Lower part between be equipped with sealing piston (8), sealing piston (8) and the lower part of top connection (1) pass through left-hand thread (7) and connect, and are cutting ring
It (4) is impact cavity (6) to be offered fluffing of moulding sand hole (9) in the lower part of sealing steel bushing (5), and fluffing of moulding sand hole between sealing piston (8)
(9) inside is realized by sealing piston (8) and is closed, and after safe shear pin (3) is cut, top connection (1) drives sealing piston (8)
It moves up, realizes the opening of fluffing of moulding sand hole (9)；
The ring (4) of cutting is made of upper ring and a lower ring two parts, and the outer diameter of upper ring is identical as the sealing outer diameter of steel bushing (5), and pacifies
Full shear pin (3) is arranged on the inside of upper ring；The outer diameter of lower ring is less than the internal diameter of sealing steel bushing (5), and the internal diameter of lower ring is greater than top connection
(1) outer diameter of lower part is mounted on lower ring in the annular space between sealing steel bushing (5) and top connection (1)；
When moving up sand-proof pipe by well head power device, sand-proof pipe drives top connection (1) to move up, top connection (1)
Sealing piston (8) are driven to move up in impact cavity (6), sealing piston is moved to the bottom for cutting ring (4) at the top of (8), makes
It cuts in the second bayonet (13) that the first minor arc (10) on ring (4) is stuck on sealing piston (8), second in sealing piston (8)
Minor arc (11), which is stuck in, to be cut in the first bayonet (12) on ring (4), then when being rotated forward by well head power device drive sand-proof pipe,
Top connection (1) and sealing piston (8) can be driven to unbutton separation；
The sealing piston (8) includes columnar connection main body (8.1) and sealing stress ring (8.2), connects main body (8.1)
Inner wall is equipped with left-hand thread (7), is connect by left-hand thread (7) with the outer wall of top connection；The sealing stress ring (8.2) is inwardly recessed
Columnar structured, columnar structured bottom is balance controlled area (8.3), and the stress of balance controlled area (8.3) is less than shear pin
Shearing force, when well head needs to suppress, when pressure is more than 105 megapascal, sealing piston is moved up, and passes through fluffing of moulding sand hole (9) pressure release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910113817.2A CN109854186A (en) | 2017-09-15 | 2017-09-15 | Safety joint under a kind of fluffing of moulding sand formula oil well |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910113817.2A CN109854186A (en) | 2017-09-15 | 2017-09-15 | Safety joint under a kind of fluffing of moulding sand formula oil well |
| CN201710834770.XA CN107558933B (en) | 2017-09-15 | 2017-09-15 | Safety joint under a kind of fluffing of moulding sand formula oil well |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710834770.XA Division CN107558933B (en) | 2017-09-15 | 2017-09-15 | Safety joint under a kind of fluffing of moulding sand formula oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109854186A true CN109854186A (en) | 2019-06-07 |
Family
ID=60981292
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910113816.8A Active CN109779538B (en) | 2017-09-15 | 2017-09-15 | Petroleum downhole operation device |
| CN201710834770.XA Active CN107558933B (en) | 2017-09-15 | 2017-09-15 | Safety joint under a kind of fluffing of moulding sand formula oil well |
| CN201910113817.2A Pending CN109854186A (en) | 2017-09-15 | 2017-09-15 | Safety joint under a kind of fluffing of moulding sand formula oil well |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910113816.8A Active CN109779538B (en) | 2017-09-15 | 2017-09-15 | Petroleum downhole operation device |
| CN201710834770.XA Active CN107558933B (en) | 2017-09-15 | 2017-09-15 | Safety joint under a kind of fluffing of moulding sand formula oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN109779538B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075745A (en) * | 2022-08-23 | 2022-09-20 | 东营政阳自动化科技有限公司 | Oil is safety joint in pit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162651B (en) * | 2018-09-21 | 2020-06-05 | 中国石油集团渤海钻探工程有限公司 | Hydraulic safety joint |
| CN111088973B (en) * | 2020-01-10 | 2023-07-07 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing completion pipe string and process for high-temperature high-pressure oil-gas well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050284635A1 (en) * | 2004-06-09 | 2005-12-29 | Neves John A | Firing head with detonation gas release activation |
| CN102011559A (en) * | 2010-10-29 | 2011-04-13 | 中国石油化工股份有限公司 | Underground snubbing operation device |
| CN202325288U (en) * | 2011-08-23 | 2012-07-11 | 东营市东营区和光科技有限责任公司 | Back-off safety joint |
| CN104314510A (en) * | 2014-11-12 | 2015-01-28 | 中国石油天然气股份有限公司 | Self-expanding packer with compression protection mechanism |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2516688Y (en) * | 2001-10-01 | 2002-10-16 | 中国石化胜利油田有限公司采油工艺研究院 | Graded freeing stuck tools for underpit operation |
| CN200975222Y (en) * | 2006-11-24 | 2007-11-14 | 中国石化股份胜利油田分公司采油工艺研究院 | Down-hole pipe column cushion safety processor |
| CN201420519Y (en) * | 2009-06-08 | 2010-03-10 | 阜新市石油工具厂 | Large drift diameter sieve tube hanger |
| CN201891404U (en) * | 2010-07-22 | 2011-07-06 | 北京金科龙石油技术开发有限公司 | Left-hand threaded packer |
| CN202181857U (en) * | 2011-07-18 | 2012-04-04 | 海城市石油机械制造有限公司 | Multifunctional safe joint |
| EP2823131B1 (en) * | 2012-03-05 | 2018-06-27 | Weatherford Technology Holdings, LLC | Apparatus and methods of running an expandable liner |
| CN102926687B (en) * | 2012-11-27 | 2015-09-30 | 朱新华 | Oil well operation is visited, rushes, is dragged for integrated underground tool |
| WO2014193419A1 (en) * | 2013-05-31 | 2014-12-04 | Halliburton Energy Services, Inc. | Travel joint release devices and methods |
| CN105484676B (en) * | 2016-01-12 | 2018-05-01 | 中国石油化工股份有限公司 | Layered gas-injection safety joint and its application method |
-
2017
- 2017-09-15 CN CN201910113816.8A patent/CN109779538B/en active Active
- 2017-09-15 CN CN201710834770.XA patent/CN107558933B/en active Active
- 2017-09-15 CN CN201910113817.2A patent/CN109854186A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050284635A1 (en) * | 2004-06-09 | 2005-12-29 | Neves John A | Firing head with detonation gas release activation |
| CN102011559A (en) * | 2010-10-29 | 2011-04-13 | 中国石油化工股份有限公司 | Underground snubbing operation device |
| CN202325288U (en) * | 2011-08-23 | 2012-07-11 | 东营市东营区和光科技有限责任公司 | Back-off safety joint |
| CN104314510A (en) * | 2014-11-12 | 2015-01-28 | 中国石油天然气股份有限公司 | Self-expanding packer with compression protection mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075745A (en) * | 2022-08-23 | 2022-09-20 | 东营政阳自动化科技有限公司 | Oil is safety joint in pit |
| CN115075745B (en) * | 2022-08-23 | 2022-12-16 | 大庆市奈固石油机械设备制造有限公司 | Oil is safety joint in pit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107558933B (en) | 2019-06-21 |
| CN109779538A (en) | 2019-05-21 |
| CN107558933A (en) | 2018-01-09 |
| CN109779538B (en) | 2020-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5400857A (en) | Oilfield tubular shear ram and method for blowout prevention | |
| CN107558933B (en) | Safety joint under a kind of fluffing of moulding sand formula oil well | |
| CN107642341B (en) | Use method of loose sand type petroleum underground safety joint | |
| CN107060679A (en) | A kind of screw rod hydraulic returnable fishing tool | |
| CN107386960A (en) | A kind of drilling speed device with composite drill bit | |
| CN102704879A (en) | Abrasive jet processing tool for downhole accidents | |
| CN105863499A (en) | Synchronous drilling device special for mine | |
| CN107023259B (en) | A kind of well system based on double-wall drill pipe | |
| CN206707664U (en) | A kind of screw rod hydraulic returnable fishing tool | |
| CN109681144A (en) | A kind of integral type deep-sea casing-pipe cutting fishing device | |
| CN105178912B (en) | A kind of drilling tool by-passing valve | |
| CN101949269A (en) | Safety joint for switching off hydraulic pressure | |
| CN107558951A (en) | A kind of hydraulic selector circulation slide sleeve | |
| CN116006093A (en) | Anti-sticking drill pump-jamming nipple of underground power drilling tool | |
| CN213775296U (en) | Steel wire cutting knife capable of positioning | |
| CN101936143B (en) | Reclaimable drilling rig device | |
| CN206111091U (en) | But reducing reamer | |
| CN205445525U (en) | Can formula of dragging for pressure shutoff in pit instrument | |
| CN207420516U (en) | A kind of preventing oil pipe split junk mill | |
| CN214221132U (en) | Returnable fishing device | |
| CN216553816U (en) | Shearing elevator | |
| CN104481433A (en) | Near-bit local pressure reduction short joint | |
| CN2187222Y (en) | Fishing gear | |
| CN204212724U (en) | Integrated form coring tool | |
| CN205503037U (en) | Double -walled drilling rod drilling system's water conservancy diversion pressurizing piston |
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 |
Effective date of registration: 20200929 Address after: No.72, yujiachan village, Jieshi Town, Wendeng City, Weihai City, Shandong Province Applicant after: Yu Zhihao Address before: 257000 the Yellow River Road, Kenli District, Dongying, Shandong Province, No. 739 Applicant before: Liu Yuyou |
|
| TA01 | Transfer of patent application right | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20201225 |
|
| AD01 | Patent right deemed abandoned |