CN102777148A - Double-function releasing bridge plug for horizontal well - Google Patents

Double-function releasing bridge plug for horizontal well Download PDF

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Publication number
CN102777148A
CN102777148A CN2012103034941A CN201210303494A CN102777148A CN 102777148 A CN102777148 A CN 102777148A CN 2012103034941 A CN2012103034941 A CN 2012103034941A CN 201210303494 A CN201210303494 A CN 201210303494A CN 102777148 A CN102777148 A CN 102777148A
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CN
China
Prior art keywords
filling
central tube
giving
tube
lock pawl
Prior art date
Application number
CN2012103034941A
Other languages
Chinese (zh)
Other versions
CN102777148B (en
Inventor
冯永平
冯伟
韩云乐
Original Assignee
招远金河石油设备技术开发有限公司
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Application filed by 招远金河石油设备技术开发有限公司 filed Critical 招远金河石油设备技术开发有限公司
Priority to CN201210303494.1A priority Critical patent/CN102777148B/en
Publication of CN102777148A publication Critical patent/CN102777148A/en
Application granted granted Critical
Publication of CN102777148B publication Critical patent/CN102777148B/en

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Abstract

The invention relates to a double-function releasing bridge plug for a horizontal well, belonging to the technical field of water plugging tool structures. The double-function releasing bridge plug comprises an upper joint, a central pipe and a lower joint, wherein a locking claw is arranged in the upper joint, a seat seal piston is arranged between the upper joint and the locking claw, a releasing ball seat is arranged in the locking claw, the locking claw is provided with a positioning pin for positioning a steel ball, and a limiting pin for limiting the releasing steel ball from excessively moving, the releasing ball seat is provided with a limiting groove which is matched with the limiting pin, and the locking claw is connected with a connecting pin nail through the releasing ball seat. With the double-function releasing bridge plug disclosed by the invention, the structure is simple, the position of the releasing locking claw is improved, and the steel ball is positioned by being placed in the locking claw in advance, so that a filling device is additionally added, a using range of a tool is expanded, and the reliability of the tool is improved.

Description

The difunctional bridging plug of giving up of horizontal well
Technical field
[0001] the present invention relates to the difunctional bridging plug of giving up of a kind of horizontal well, belong to the water clogging tool technical field of structures.
Background technology
At present, the difunctional bridging plug of Y445 that oilfield uses, it is big to throw in the steel ball difficulty to greater than 65 degree horizontal well constructions the time, floats easily when operating, and does not reach sealing function, and the bridging plug of giving up cannot set, and existing bridging plug does not have the filling function.
Summary of the invention
The objective of the invention is to solve the weak point that above-mentioned prior art exists, a kind of reasonable in design is provided, easy to use, the difunctional bridging plug of giving up of the horizontal well that reliability is high.
The present invention realizes through following technical scheme:
The difunctional bridging plug of giving up of horizontal well; Comprise top connection 1, central tube 13, lower contact 20, its special character is to establish in the top connection 1 lock pawl 4, establishes between top connection 1 and the lock pawl 4 and sets piston 2; Establish the ball seat 6 of giving up in the lock pawl 4; On the lock pawl 4 alignment pin 3 that is used for locking ball 5 is installed and is used to limit the ball seat 6 undue spacer pins 7 that move of giving up, the ball seat 6 of giving up is provided with the stopper slot 33 that is used with spacer pin 7, and lock pawl 4 is connected through being connected pin 8 with the ball seat 6 of giving up;
Top connection 1 is threaded with lock pawl 4 tops; Lock pawl 4 bottoms are connected with central tube 13 left hand threads; Pressure ring 9, sheath 10, fishing joint 11 lean on screw thread and pin to be connected the external diameter of central tube 13; The bottom of central tube 13 is threaded with lower cone 19, and lower cone 19 and lower contact 20, adapter sleeve 22, filling tube 30, being located by connecting 26 is threaded step by step, sleeve 14, sets packing element 15, upper cone 16, slips cover 17, lower cone 19 and is installed in respectively on the external diameter of central tube 13; Slips 18 is by the endoporus of the slips cover 17 of packing into, and lock ring 12 locks with the top of fishing joint 11, central tube 13.
In order to realize filling function; Also comprise device for filling, device for filling comprises sealing drum 24 and is located at the filling tube 30 of sealing drum 24 outsides that the below of sealing drum 24 is provided with spring 25; Filling tube 30 is provided with pack hole 29; Filling tube 30 has been threaded and has been located by connecting 26, and 26 the inwall of being located by connecting is provided with the positioning key 28 that is used to make the filling mouth 31 of filling central tube 34 to overlap with pack hole 29 on the filling tube 30, and sealing drum 24 contacts when moving with central tube 13.
During filling work, the filling central tube 34 that the tubing string top connects is provided with the slideway 32 that is used with positioning key 28; During use, connect filling central tube 34 through tubing string, tubing string is descending; Drive filling central tube 34 and move down, fill central tube 34 and get into filling tubes 30, press down the sealing drum 24 in the filling tube 30; Sealing drum 24 is moved down, positioning key 28 is positioned on the slideway 32 of filling central tube 34, thereby the filling mouth 31 of filling central tube 34 is overlapped with the pack hole 29 of filling tube 30; To take sand by the surface pump group and carry out underground filling, after filling is accomplished, the upper lifting pipe post; To fill central tube 34 and propose well head, sealing drum 24 is upspring through spring 25, with pack hole 29 sealings of filling tube 30.
Be threaded on said filling tube 30 outer walls and lead and filling sand directly rushes at casing wall when being used to prevent to fill guide ring 27.
The difunctional bridging plug of giving up of horizontal well of the present invention, reasonable in design, improve the lock claw position of will giving up, and steel ball is put in advance in the lock pawl and locatees, and has increased device for filling, has enlarged the scope of application and the reliability that has improved instrument of instrument.
Description of drawings
Fig. 1: the structural representation of the lock pawl and the bridging plug of giving up;
Fig. 2: the structural representation of device for filling;
Fig. 3: the structural representation of filling central tube;
Fig. 4: the structural representation of the difunctional bridging plug of giving up of horizontal well.
Top connection 1; Set piston 2; Alignment pin 3; Lock pawl 4; Locking ball 5; The ball seat 6 of giving up; Spacer pin 7; Connect pin 8; Pressure ring 9; Sheath 10; Fishing joint 11; Lock ring 12; Central tube 13; Sleeve 14; Set packing element 15; Upper cone 16; Slips cover 17; Slips 18; Lower cone 19; Lower contact 20; Guide ring 21; Adapter sleeve 22; Sealing drum 24; Spring 25; Be located by connecting 26; Guide ring 27; Positioning key 28; Pack hole 29; Filling tube 30; Filling mouth 31; Slideway 32; Stopper slot 33; Fill central tube 34.
The specific embodiment
Provide the specific embodiment of the invention below with reference to accompanying drawing, be used for the present invention is further specified.
Embodiment 1
The difunctional bridging plug of giving up of the horizontal well of present embodiment; Comprise top connection 1, central tube 13, lower contact 20, establish lock pawl 4 in the top connection 1, establish between top connection 1 and the lock pawl 4 and set piston 2; Establish the ball seat 6 of giving up in the lock pawl 4; On the lock pawl 4 alignment pin 3 that is used for locking ball 5 is installed and is used to limit the ball seat 6 undue spacer pins 7 that move of giving up, the ball seat 6 of giving up is provided with the stopper slot 33 that is used with spacer pin 7, and lock pawl 4 is connected through being connected pin 8 with the ball seat 6 of giving up;
Top connection 1 is threaded with lock pawl 4 tops; Lock pawl 4 bottoms are connected with central tube 13 left hand threads; Pressure ring 9, sheath 10, fishing joint 11 lean on screw thread and pin to be connected the external diameter of central tube 13; The bottom of central tube 13 is threaded with lower cone 19, and lower cone 19 and lower contact 20, adapter sleeve 22, filling tube 30, being located by connecting 26 is threaded step by step, sleeve 14, sets packing element 15, upper cone 16, slips cover 17, lower cone 19 and is installed in respectively on the external diameter of central tube 13; Slips 18 is by the endoporus of the slips cover 17 of packing into, and lock ring 12 locks with the top of fishing joint 11, central tube 13.
In order to realize filling function; The difunctional bridging plug of giving up of horizontal well also comprises device for filling; Device for filling comprises sealing drum 24 and is located at the outside filling tube 30 of sealing drum 24, is threaded on filling tube 30 outer walls to be useful on the guide ring 27 that filling sand when preventing to fill directly rushes at casing wall; The below of sealing drum 24 is provided with spring 25; Filling tube 30 is provided with pack hole 29; Filling tube 30 has been threaded and has been located by connecting 26, and 26 the inwall of being located by connecting is provided with the positioning key 28 that is used to make the filling mouth 31 of filling central tube 34 to overlap with pack hole 29 on the filling tube 30.
Operating principle: present embodiment give up bridging plug when oilfield is operated, utilize tubing string can salvage bridging plug and be lowered to the oil well projected depth and suppress with pump then, pressure promotes to set piston by central tube 13; Force descending compression pressure ring 9, compressive force passes to step by step and sets on packing element 15 and the slips 18, like this slips 18 being stuck on the casing wall tightly; Set packing element 15 simultaneously and also set on casing wall, realized Seal Oil, water, make oil, can't circulate under waterborne; Need pressurization after setting completion, when being forced into 18Mpa, will connecting pin 8 and cut off; The ball seat 6 of giving up in the lock pawl 4 is descending; Like this, the lance pawl of lock pawl 4 shrinks automatic off center pipe 13, so just can will lock pawl 4 parts proposition well head by the upper lifting pipe post.
Owing to adopted top connection 1 to be threaded with lock pawl 4 tops; Steel ball 5 is put in the lock pawl 4 fixing through alignment pin 3, and lock pawl 4 is connected through being connected pin 8 with the ball seat 6 of giving up, and lock pawl 4 bottoms are connected with central tube 13 left hand threads; Therefore reduced the horizontal well construction difficulty; Throw in the steel ball difficulty and reduce, steel ball is difficult for going up instead during operation, good sealing effect.
Utilize tubing string that filling central tube 34 is directly inserted filling tube 30, filling sealing drum 24 is opened carried out filling, during work, tubing string is descending; Drive filling central tube 34 and move down, fill central tube 34 and get into filling tubes 30, press down the sealing drum 24 in the filling tube 30; Sealing drum is moved down, positioning key 28 is positioned on the slideway 32 of filling central tube 34, thereby the filling mouth 31 of filling central tube 34 is overlapped with the pack hole 29 of filling tube; To take sand by bottom surface, ground pump group and carry out underground filling, after filling is accomplished, the upper lifting pipe post; To fill central tube 34 and propose well head, sealing drum 24 is upspring through spring 25, with the filling mouth sealing of filling tube.
The difunctional bridging plug of giving up of horizontal well of the present invention, reasonable in design, improve the lock claw position of will giving up, and steel ball is put in advance in the lock pawl and locatees, and has increased device for filling, has enlarged the scope of application and the reliability that has improved instrument of instrument.

Claims (2)

1. the difunctional bridging plug of giving up of horizontal well; Comprise top connection (1), central tube (13), lower contact (20); It is characterized in that establishing in the top connection (1) lock pawl (4); Establish between top connection (1) and the lock pawl (4) and set piston (2), establish the ball seat of giving up (6) in the lock pawl (4), on the lock pawl (4) alignment pin (3) that is used for locking ball (5) is installed and is used for limiting the undue spacer pin (7) that moves of ball seat (6) of giving up; The ball seat (6) of giving up is provided with the stopper slot (33) that is used with spacer pin (7), and lock pawl (4) is connected through being connected pin (8) with the ball seat of giving up (6);
Top connection (1) is threaded with lock pawl (4) top; Lock pawl (4) bottom is connected with central tube (13) left hand thread; Pressure ring (9), sheath (10), fishing joint (11) lean on screw thread and pin to be connected the external diameter of central tube (13); The bottom of central tube (13) is threaded with lower cone (19); Lower cone (19) is threaded with lower contact (20), adapter sleeve (22), filling tube (30), the head (26) that is located by connecting step by step; Sleeve (14), set packing element (15), upper cone (16), slips cover (17), lower cone (19) and be installed in respectively on the external diameter of central tube (13), slips (18) is by the endoporus of slips cover (17) of packing into, and lock ring (12) locks with the top of fishing joint (11), central tube (13);
Device for filling comprises sealing drum (24) and is located at the outside filling tube (30) of sealing drum (24); The below of sealing drum (24) is provided with spring (25); Filling tube (30) is provided with pack hole (29); Filling tube (30) be threaded be located by connecting the head (26); The inwall of head (26) of being located by connecting is provided with the positioning key (28) that is used to make the filling mouth (31) of filling central tube (34) to overlap with pack hole (29) on the filling tube (30), and sealing drum (24) contacts when moving with central tube (13).
2. according to the difunctional bridging plug of giving up of the described horizontal well of claim 1, it is characterized in that
Be threaded on said filling tube (30) outer wall and lead and filling sand directly rushes at casing wall when being used to prevent to fill guide ring (27).
CN201210303494.1A 2012-08-24 2012-08-24 Double-function releasing bridge plug for horizontal well CN102777148B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210303494.1A CN102777148B (en) 2012-08-24 2012-08-24 Double-function releasing bridge plug for horizontal well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210303494.1A CN102777148B (en) 2012-08-24 2012-08-24 Double-function releasing bridge plug for horizontal well

Publications (2)

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CN102777148A true CN102777148A (en) 2012-11-14
CN102777148B CN102777148B (en) 2015-06-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103775044A (en) * 2013-08-15 2014-05-07 中国石油天然气股份有限公司 Pipe column for treating steam channeling of SAGD injection-production horizontal well front end and technical method
CN104879090A (en) * 2015-06-12 2015-09-02 西南石油大学 Fast-drilling composite bridge plug adopting single-slip double-acting structure
CN104879078A (en) * 2014-03-02 2015-09-02 山东兆鑫石油工具有限公司 Releasing apparatus
CN105822253A (en) * 2015-01-06 2016-08-03 中国石油天然气股份有限公司 Bushing sliding sleeve and hydraulic bridge plug combined type completion pipe string and rapid fracturing method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2512902Y (en) * 2001-11-09 2002-09-25 孔利生 High pressure packing one-step filling tool
US20030024712A1 (en) * 2001-08-02 2003-02-06 Neal Kenneth G. Bridge plug
CN200949445Y (en) * 2005-11-24 2007-09-19 辽河石油勘探局 Plugging packer for small borehole oil-gas water well
CN201062505Y (en) * 2007-02-15 2008-05-21 孔利生 Hollow suspension sub-releasing axle plug
CN101915071A (en) * 2010-07-07 2010-12-15 招远金河石油设备技术开发有限公司 Tool for filling and backwashing oil well
CN202767942U (en) * 2012-08-24 2013-03-06 招远金河石油设备技术开发有限公司 Difunctional release bridge plug for horizontal well

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030024712A1 (en) * 2001-08-02 2003-02-06 Neal Kenneth G. Bridge plug
CN2512902Y (en) * 2001-11-09 2002-09-25 孔利生 High pressure packing one-step filling tool
CN200949445Y (en) * 2005-11-24 2007-09-19 辽河石油勘探局 Plugging packer for small borehole oil-gas water well
CN201062505Y (en) * 2007-02-15 2008-05-21 孔利生 Hollow suspension sub-releasing axle plug
CN101915071A (en) * 2010-07-07 2010-12-15 招远金河石油设备技术开发有限公司 Tool for filling and backwashing oil well
CN202767942U (en) * 2012-08-24 2013-03-06 招远金河石油设备技术开发有限公司 Difunctional release bridge plug for horizontal well

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103775044A (en) * 2013-08-15 2014-05-07 中国石油天然气股份有限公司 Pipe column for treating steam channeling of SAGD injection-production horizontal well front end and technical method
CN103775044B (en) * 2013-08-15 2017-05-10 中国石油天然气股份有限公司 Pipe column for treating steam channeling of SAGD injection-production horizontal well front end and technical method
CN104879078A (en) * 2014-03-02 2015-09-02 山东兆鑫石油工具有限公司 Releasing apparatus
CN104879078B (en) * 2014-03-02 2017-06-06 山东兆鑫石油工具有限公司 A kind of releasing device
CN105822253A (en) * 2015-01-06 2016-08-03 中国石油天然气股份有限公司 Bushing sliding sleeve and hydraulic bridge plug combined type completion pipe string and rapid fracturing method
CN104879090A (en) * 2015-06-12 2015-09-02 西南石油大学 Fast-drilling composite bridge plug adopting single-slip double-acting structure
CN104879090B (en) * 2015-06-12 2018-05-01 西南石油大学 A kind of single deck tape-recorder watt double acting speed bores composite bridge plug

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