CN107642341B - Use method of loose sand type petroleum underground safety joint - Google Patents
Use method of loose sand type petroleum underground safety joint Download PDFInfo
- Publication number
- CN107642341B CN107642341B CN201710833647.6A CN201710833647A CN107642341B CN 107642341 B CN107642341 B CN 107642341B CN 201710833647 A CN201710833647 A CN 201710833647A CN 107642341 B CN107642341 B CN 107642341B
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- Prior art keywords
- sand
- proof pipe
- top connection
- well head
- sealing piston
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/06—Releasing-joints, e.g. safety joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a use method of a loose sand type petroleum underground safety joint. The technical scheme is as follows: the sand loosening device comprises an upper connector and a lower connector, wherein the lower part of the upper connector is connected with the lower connector, a sealing steel sleeve is sleeved on the outer side of the upper connector, a shear ring is arranged between the sealing steel sleeve and the upper part of the upper connector, a safety shear pin is arranged on the upper part of the shear ring, a sealing piston is arranged between the sealing steel sleeve and the lower part of the upper connector, the sealing piston is connected with the lower part of the upper connector through a left-hand thread, an impact cavity is arranged between the shear ring and the sealing piston, and a sand loosening hole is formed in the lower part of the sealing steel sleeve. The invention has the beneficial effects that: the invention can solve the problem of sand blocking, ensure that the pipe column can be safely lifted, prevent the overhaul of an oil well, directly pull out the sand control pipe under various conditions, solve the problem that the sand control pipe is mostly taken out in sections at present, and has simple operation, time saving and labor saving.
Description
Technical field
The present invention relates to apparatus for work and method under a kind of oil well, in particular to a kind of fluffing of moulding sand formula petroleum downhole safety connects
The application method of head.
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 by the way of impact come loose
Open this principle of 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
The application method of connector is able to solve sand card, tubing string is enable to propose safely, prevents workover, can be in several cases
Sand-proof pipe is directly extracted, 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.
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 that its is suitable
Casing transfer to underground；
Secondly, needing to be divided into following four situation by well head power device drawing and implemented behaviour when sand-proof pipe encounters sand and buries
Make:
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
Mouthful；
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 logical
It crosses and cuts ring and cut safety nail, sand-proof pipe drives top connection to move up, and top connection drives sealing piston (8) Xiang Shangyi simultaneously
It is dynamic, the opening of fluffing of moulding sand hole (9) is realized, in this way, the sand of the annular space between casing and sand-proof pipe buries loosening, and then sand-proof pipe is whole
Pull out well head；
Three, when still sand-proof pipe cannot be pulled out after safety nail cutting, sand control is moved up and down by well head power device
Pipe realizes the up-down vibration of sand-proof pipe, and sand-proof pipe drives top connection (1) to move up and down, due to sealing piston (8) and top connection
(1) lower part is connected by left-hand thread (7), is moved down so top connection (1) drives sealing piston (8) to realize in impact cavity (6)
Dynamic, when moving upward, the bottom for cutting ring (4) is hit at the top of sealing piston (8), when moving down, the bottom of sealing piston (8)
The top of lower contact is hit in portion, forms continuous shock up and down, the sand of the annular space between casing and sand-proof pipe can be made to bury loosening,
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 well head；
Four, it when sand-proof pipe still cannot be proposed well head by operating procedure three, is moved up by well head power device anti-
Sandpipe, sand-proof pipe drive top connection (1) to move up, and top connection (1) drives sealing piston (8) to move up in impact cavity (6) introversion
Dynamic, the bottom for cutting ring (4) is hit at the top of sealing piston (8), is made to cut the first minor arc (10) on ring (4) and is stuck in sealing piston
(8) in the second bayonet (13) on, the second minor arc (11) in sealing piston (8) is stuck in the first bayonet (12) cut on ring (4)
Interior, the first minor arc (10) cut on ring (4) merges with the second minor arc (11) on 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 at this time, it can will be under sealing piston (8) and top connection (1)
Portion's unscrewing, is divided into two sections, so that well head is extracted in top connection, transfers fishing device again, by remaining lower contact and sealing steel bushing
Well head is salvaged, realizes that classification is salvaged.
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, and when moving up, sealing is lived
The bottom for cutting ring is hit at the top of plug, and when moving down, the top of lower contact is hit in the bottom of sealing piston, is formed on continuous
Lower shock, the sand of the annular space between casing and sand-proof pipe bury part loosening, and sand is entered inside sealing steel bushing by fluffing of moulding sand hole, real
The purpose of the existing fluffing of moulding sand, and then sand-proof pipe is integrally pulled out into well head；
In addition, then passing through sealing piston and the special knot for cutting ring when sand-proof pipe can't be proposed well head by upper and lower shock
Structure cooperation, sealing piston and the lower part of top connection are separated, are divided into two sections, so that well head is extracted in top connection, decentralization is beaten again
Device is fished out, remaining lower contact, sealing steel bushing are salvaged into well head, realize that classification is salvaged, to effectively realize safety joint
Function；
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, thus
Good condition is created for being further processed for accident.
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, safe shear pin 3, cuts ring 4, sealing steel bushing 5, impact cavity 6, left-hand thread 7, sealing work at lower contact 2
Plug 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, balance controlled area 8.3.
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.
Referring to attached drawing 3 and 4, the first minor arc (10) and the first bayonet (12), the first bayonet are equipped in the bottom for cutting ring (4)
It (12) is the first minor arc (10) of protrusion to be formed, in sealing piston in the major arc for cutting ring (4) bottom milling depth as 3-5 millimeters
(8) top is equipped with the second minor arc (11) and the second bayonet (13), and the second bayonet (13) is the top milling in sealing piston (8)
The major arc that 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 that its is suitable
Casing transfer to underground；
Secondly, needing to be divided into following four situation by well head power device drawing and implemented behaviour when sand-proof pipe encounters sand and buries
Make:
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
Mouthful；
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 logical
It crosses and cuts ring and cut safety nail, sand-proof pipe drives top connection to move up, and top connection drives sealing piston (8) Xiang Shangyi simultaneously
It is dynamic, the opening of fluffing of moulding sand hole (9) is realized, in this way, the sand of the annular space between casing and sand-proof pipe buries loosening, and then sand-proof pipe is whole
Pull out well head；
Three, when still sand-proof pipe cannot be pulled out after safety nail cutting, sand control is moved up and down by well head power device
Pipe realizes the up-down vibration of sand-proof pipe, and sand-proof pipe drives top connection (1) to move up and down, due to sealing piston (8) and top connection
(1) lower part is connected by left-hand thread (7), is moved down so top connection (1) drives sealing piston (8) to realize in impact cavity (6)
Dynamic, when moving upward, the bottom for cutting ring (4) is hit at the top of sealing piston (8), when moving down, the bottom of sealing piston (8)
The top of lower contact is hit in portion, forms continuous shock up and down, the sand of the annular space between casing and sand-proof pipe can be made to bury loosening,
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 well head；
Four, it when sand-proof pipe still cannot be proposed well head by operating procedure three, is moved up by well head power device anti-
Sandpipe, sand-proof pipe drive top connection (1) to move up, and top connection (1) drives sealing piston (8) to move up in impact cavity (6) introversion
Dynamic, the bottom for cutting ring (4) is hit at the top of sealing piston (8), is made to cut the first minor arc (10) on ring (4) and is stuck in sealing piston
(8) in the second bayonet (13) on, the second minor arc (11) in sealing piston (8) is stuck in the first bayonet (12) cut on ring (4)
Interior, the first minor arc (10) cut on ring (4) merges with the second minor arc (11) on 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 at this time, it can will be under sealing piston (8) and top connection (1)
Portion's unscrewing, is divided into two sections, so that well head is extracted in top connection, transfers fishing device again, by remaining lower contact and sealing steel bushing
Well head is salvaged, 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 by well head power device
Sand-proof pipe, by the drawing directly up of well head power device, entirely can be pulled out well head when sand buried depth degree is smaller by drawing.
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 (2)
1. the application method of safety joint under a kind of fluffing of moulding sand formula oil well, it is characterized in that the following steps are included:
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 safe shear pin, and sand-proof pipe drives top connection to move up, and top connection drives sealing piston (8) to move up simultaneously,
The opening for realizing 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 drawn
Well head out；
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.
2. the application method of safety joint under a kind of fluffing of moulding sand formula oil well according to claim 1, it is characterized in that: described cut
Ring (4) 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 safe shear pin (3) is set
It sets 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 the outer of top connection (1) lower part
Diameter is mounted on lower ring in the annular space between sealing steel bushing (5) and top connection (1).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088609.1A CN109538134B (en) | 2017-09-15 | 2017-09-15 | Application method of petroleum underground safety joint |
| CN201910088605.3A CN109505528B (en) | 2017-09-15 | 2017-09-15 | Use method of loose sand type petroleum underground safety joint |
| CN201710833647.6A CN107642341B (en) | 2017-09-15 | 2017-09-15 | Use method of loose sand type petroleum underground safety joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710833647.6A CN107642341B (en) | 2017-09-15 | 2017-09-15 | Use method of loose sand type petroleum underground safety joint |
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| CN201910088605.3A Division CN109505528B (en) | 2017-09-15 | 2017-09-15 | Use method of loose sand type petroleum underground safety joint |
| CN201910088609.1A Division CN109538134B (en) | 2017-09-15 | 2017-09-15 | Application method of petroleum underground safety joint |
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| Publication Number | Publication Date |
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| CN107642341A CN107642341A (en) | 2018-01-30 |
| CN107642341B true CN107642341B (en) | 2019-05-28 |
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| CN201910088605.3A Active CN109505528B (en) | 2017-09-15 | 2017-09-15 | Use method of loose sand type petroleum underground safety joint |
| CN201710833647.6A Active CN107642341B (en) | 2017-09-15 | 2017-09-15 | Use method of loose sand type petroleum underground safety joint |
| CN201910088609.1A Active CN109538134B (en) | 2017-09-15 | 2017-09-15 | Application method of petroleum underground safety joint |
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| CN109505528A (en) * | 2017-09-15 | 2019-03-22 | 刘玉友 | The application method of safety joint under fluffing of moulding sand formula oil well |
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| CN111894478B (en) * | 2020-07-09 | 2022-03-29 | 宝鸡畅油石油设备有限公司 | RD type safety joint |
| CN112343531B (en) * | 2020-11-04 | 2022-04-08 | 张新 | Sand-blocking-prevention safety joint for downhole operation of oil exploitation and operation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| CN205532519U (en) * | 2016-03-23 | 2016-08-31 | 中国石油天然气股份有限公司 | Mechanical sand control tubular column |
| CN109505528B (en) * | 2017-09-15 | 2020-06-02 | 山东华冠能源技术有限公司 | Use method of loose sand type petroleum underground safety joint |
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2017
- 2017-09-15 CN CN201910088605.3A patent/CN109505528B/en active Active
- 2017-09-15 CN CN201710833647.6A patent/CN107642341B/en active Active
- 2017-09-15 CN CN201910088609.1A patent/CN109538134B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505528A (en) * | 2017-09-15 | 2019-03-22 | 刘玉友 | The application method of safety joint under fluffing of moulding sand formula oil well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109538134A (en) | 2019-03-29 |
| CN109505528B (en) | 2020-06-02 |
| CN107642341A (en) | 2018-01-30 |
| CN109505528A (en) | 2019-03-22 |
| CN109538134B (en) | 2020-09-04 |
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