CN205605160U - Formula of breaking tail pipe blanking plug - Google Patents

Formula of breaking tail pipe blanking plug Download PDF

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Publication number
CN205605160U
CN205605160U CN201620396634.8U CN201620396634U CN205605160U CN 205605160 U CN205605160 U CN 205605160U CN 201620396634 U CN201620396634 U CN 201620396634U CN 205605160 U CN205605160 U CN 205605160U
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CN
China
Prior art keywords
blanking plug
plug body
orientation spool
rupture disk
tail pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201620396634.8U
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Chinese (zh)
Inventor
谢意湘
杨令瑞
刘正连
赖向东
涂莹红
王闰
曾国玺
王亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
CNPC Chuanqing Drilling Engineering Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
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Priority to CN201620396634.8U priority Critical patent/CN205605160U/en
Application granted granted Critical
Publication of CN205605160U publication Critical patent/CN205605160U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a formula of breaking tail pipe blanking plug, blanking plug body, location nipple joint and rupture disk, blanking plug body upper end be the link, and lower extreme and the sealed fixed connection in location nipple joint upper end, location nipple joint lower extreme be the link, and the rupture disk is fixed that this is internal at the blanking plug to blanking plug body and location nipple joint cooperation, and the rupture disk seals up with the location nipple joint with the blanking plug body respectively and coordinates. Adopt the utility model discloses, has descended pipe cluster back to go into the fluid at intraductal pump and has suppressed to press and make the seal break, pipe cluster and well arrive and in the fluid feed through the purpose that puts into production.

Description

Rupture formula tail pipe blanking plug
Technical field
This utility model relates to one and ruptures formula tail pipe blanking plug, and completion tubular string operation depressed by the band for oil well, gas well In pipe in blocking.Belong to tool-class under Oil/gas Well well workover with pressure, completion interval of well.
Background technology
Along with the exploitation of oil gas field, Operating Pressure is as the underground work technology of a kind of advanced person, it is possible to subtract to greatest extent Few pollution to stratum, protects reservoir, safety and environmental protection and low cost, is promoted at many oil gas fields and applies.For preventing Borehole fluid enters in pipe string, must use capping tools in pipe string.At present, in conventional Operating Pressure pipe string, capping tools is by electricity Cable bridging plug, steel wire bridging plug, ball-and-seat, tail pipe blocking etc., band pressure completion tubular string commonly used tail pipe blocking.
Existing conventional tail pipe calker has blind plugging formula and two kinds of one-direction pressure-fixed joints of circulation type.They are all by this Body, blockage body, level pressure pin and sealing ring composition, during operation pressure-fixed joint top with under enter pipe series winding and connect, lower step and screen casing or Leading cone connects.Under pump in pipe after complete pipe string fluid build the pressure (circulation type pressure-fixed joint pumps into fluid after needing pitching) cut off Level pressure pin, makes blockage body fall in screen casing (well), arrives pipe string and connect the purpose put into production with borehole fluid.
In after cutting off level pressure pin due to one-direction pressure-fixed joint, seal entirety falls into screen casing or well, when entering under completion tubular column During horizontal segment, in later stage production process, seal is easily with borehole fluid recurrent canal string, and in blocking pipe string, latus rectum causes continuing Continuous production.
Summary of the invention
The purpose of this utility model is the problems referred to above overcoming prior art to exist, it is provided that one ruptures the blocking of formula tail pipe Device.Use this utility model, under in pipe, pump into fluid after complete pipe string build the pressure and make seal rupture, arrive pipe string and borehole fluid The purpose that connection is put into production.
For achieving the above object, the technical solution adopted in the utility model is as follows:
One ruptures formula tail pipe blanking plug, it is characterised in that: blanking plug body, orientation spool and rupture disk, described blocking Device body upper end is for connecting end, and lower end and orientation spool upper end are sealedly and fixedly connected, and orientation spool lower end is for connecting end, blanking plug It is the most internal that rupture disk is fixed on blanking plug by body and orientation spool cooperation, and rupture disk is short with blanking plug body and location respectively Joint seals and coordinates.
Described rupture disk is made up of friable material, including spacing fixed part and in orientation spool inner chamber indent arc knot Structure, spacing fixed part coordinates with blanking plug body and orientation spool respectively to be fixed rupture disk, and arcuate structure is positioned at orientation spool In inner chamber.
This internal positioning step that is provided with of described blanking plug, the spacing fixed part upper end of rupture disk coordinates with positioning step, Lower end coordinates with orientation spool upper surface.
Sealing ring, spacing fixed part lower end it is provided with between spacing fixed part outer wall and the blanking plug body of described rupture disk The orientation spool upper surface place of cooperation is provided with sealing ring.
Described blanking plug body upper end is provided with contacts the female thread connect, blanking plug body and orientation spool screw thread admittedly with pipe Fixed connection, is provided with sealing ring between blanking plug body and orientation spool.
Described orientation spool lower end is provided with the external screw thread being connected with screen casing or leading cone, and middle part has and is connected with blanking plug body External screw thread, external wall of upper portion is provided with 2 sealing ring annular grooves.
Employing the utility model has the advantage of:
1, this utility model is for a kind of band pressure completion tubular string with rupturing formula tail pipe blanking plug, and this blanking plug seals Rupture disk be made up of the material being easily broken, under in pipe, pump into fluid after complete pipe string build the pressure and make rupture, arrive Pipe string connects the purpose put into production with borehole fluid.
2, rupture disk is designed to arcuate structure by this utility model, and convex surface bearing capacity is far longer than concave surface;Under enter pipe string Time convex surface can hold high pressure, after tripping strings with pressure has been constructed, build the pressure in pipe string top infusion fluid to pipe string and make rupture disk Broken pressure reduction is little, favourable construction operation.
3, this utility model rupture disk uses friable material to make, and after building the pressure in pipe string, rupture disk is broken into fragment and falls into In screen casing or well, the junk of large volume in well, will not be produced, production process will not occur junk recurrent canal string cause pipe string to block up Plug phenomenon.
4, this utility model is applicable to the band pressure completion tubular string operation of oil well, gas well, it is possible to it is right to reduce to greatest extent The pollution on stratum, protects reservoir, and its application is more and more extensive, has application to the fields such as drilling well, acid fracturing, completion, particularly Shale gas well, the most generally uses the mode completion of band pressure oil pipe, and in pipe string, closure is that band pressure completion tubular string operation is crucial One of technology, and tail pipe blocking is first-selected, along with shale gas commercialized development, ruptures formula tail pipe blanking plug and blocks as tail pipe One of important tool will be widely used.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation
Figure is labeled as: 1, blanking plug body, 2, orientation spool, 3, sealing ring, 4, rupture disk.
Detailed description of the invention
Embodiment 1
One ruptures formula tail pipe blanking plug, and blanking plug body 1, orientation spool 2 and rupture disk 4, on described blanking plug body 1 End is for connecting end, and lower end and orientation spool 2 upper end are sealedly and fixedly connected, and orientation spool 2 lower end is for connecting end, blanking plug body 1 Coordinate with orientation spool 2 and rupture disk 4 be fixed in blanking plug body 1, and rupture disk 4 respectively with blanking plug body 1 and location Pipe nipple 2 seals and coordinates.
In the present embodiment, described rupture disk 4 is made up of friable material, including spacing fixed part with to orientation spool 2 inner chamber The arcuate structure of middle indent, spacing fixed part coordinates with blanking plug body 1 and orientation spool 2 respectively to be fixed rupture disk 4, arc Structure is positioned in orientation spool 2 inner chamber.
In the present embodiment, in described blanking plug body 1, be provided with positioning step, the spacing fixed part upper end of rupture disk 4 with Positioning step coordinates, and lower end coordinates with orientation spool 2 upper surface.
In the present embodiment, between spacing fixed part outer wall and the blanking plug body 1 of described rupture disk 4, it is provided with sealing ring 3, Spacing fixed part lower end is provided with sealing ring 3 with the orientation spool 2 upper surface place of cooperation.
In the present embodiment, described blanking plug body 1 upper end is provided with contacts the female thread that connects with pipe, blanking plug body 1 with Orientation spool 2 is screwed connection, is provided with sealing ring 3 between blanking plug body 1 and orientation spool 2.
In the present embodiment, described orientation spool 2 lower end is provided with the external screw thread being connected with screen casing or leading cone, and middle part has with stifled The external screw thread that plug device body 1 connects, external wall of upper portion is provided with 2 sealing ring annular grooves.
Embodiment 2
The present embodiment combines accompanying drawing and is described further this utility model.
As it can be seen, this utility model includes blanking plug body 1, orientation spool 2, sealing ring 3 and rupture disk 4.Blanking plug Body 1 upper design has the female thread connect with pipe series winding, and middle part endoporus has positioning step, and there is sealing ring position below positioning step Annular groove, the female thread being connected with orientation spool 2 is arranged at bottom;Orientation spool bottom is designed with the outer spiral shell being connected with screen casing or leading cone Stricture of vagina, middle part has the external screw thread being connected with blanking plug body 1, top cylindrical to have 2 sealing ring annular grooves.
Rupture disk 4 loads in blanking plug body 1, and rupture disk 4 is fixed on the positioning table of blanking plug body 1 by orientation spool 2 On rank;3 cushioning effects of sealing ring that spacing fixed part lower end is arranged with the orientation spool upper surface place of cooperation, prevent rupture disk from anticipating Outer broken.
Band pressure completion tubular pipe string operation time, first connect hydraulic test pump pressure testing, qualified after be installed in down pipe string Bottom, orientation spool connects screen casing or leading cone.To enter under tubing string in Oil/gas Well pit shaft, prevent downhole well fluid from entering pipe string In.
In tripping strings operation with pressure, this ruptures formula tail pipe blanking plug and is connected to pipe string afterbody, blanking plug body 1 and pipe Series winding connects, and orientation spool 2 is connected with screen casing or leading cone by external screw thread, and borehole fluid is sealed in rupture disk 4 bottom, it is impossible to enter Enter in pipe string.After tripping strings with pressure has been constructed, build the pressure in pipe string top infusion fluid to pipe string and make rupture disk 4 crush, Pipe string connects with borehole fluid, and the pipe string that Oil/gas Well enters under passing through puts into production.

Claims (6)

1. one kind ruptures formula tail pipe blanking plug, it is characterised in that: blanking plug body (1), orientation spool (2) and rupture disk (4), institute State blanking plug body (1) upper end to be sealedly and fixedly connected for connection end, lower end and orientation spool (2) upper end, orientation spool (2) lower end For connecting end, rupture disk (4) is fixed in blanking plug body (1) by blanking plug body (1) and orientation spool (2) cooperation, and broken Split dish (4) to coordinate with blanking plug body (1) and orientation spool (2) sealing respectively.
The most according to claim 1 rupture formula tail pipe blanking plug, it is characterised in that: described rupture disk (4) is by friable material Make, including spacing fixed part and in orientation spool (2) inner chamber the arcuate structure of indent, spacing fixed part respectively with blanking plug Body (1) and orientation spool (2) coordinate to be fixed rupture disk (4), and arcuate structure is positioned in orientation spool (2) inner chamber.
The most according to claim 2 rupture formula tail pipe blanking plug, it is characterised in that: arrange in described blanking plug body (1) Having positioning step, the spacing fixed part upper end of rupture disk (4) coordinates with positioning step, and lower end is joined with orientation spool (2) upper surface Close.
The most according to claim 3 rupture formula tail pipe blanking plug, it is characterised in that: described rupture disk (4) spacing fixing Being provided with sealing ring (3) between portion's outer wall and blanking plug body (1), spacing fixed part lower end is joined with orientation spool (2) upper surface Sealing ring (3) it is provided with at conjunction.
The most according to claim 4 rupture formula tail pipe blanking plug, it is characterised in that: described blanking plug body (1) upper end sets Being equipped with and contact the female thread that connects with pipe, blanking plug body (1) is screwed with orientation spool (2) and is connected, blanking plug body (1) and Sealing ring (3) it is provided with between orientation spool (2).
The most according to claim 5 rupture formula tail pipe blanking plug, it is characterised in that: described orientation spool (2) lower end is arranged Having the external screw thread being connected with screen casing or leading cone, there is the external screw thread being connected with blanking plug body (1) at middle part, and external wall of upper portion is provided with 2 sealing ring annular grooves.
CN201620396634.8U 2016-05-05 2016-05-05 Formula of breaking tail pipe blanking plug Active CN205605160U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620396634.8U CN205605160U (en) 2016-05-05 2016-05-05 Formula of breaking tail pipe blanking plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620396634.8U CN205605160U (en) 2016-05-05 2016-05-05 Formula of breaking tail pipe blanking plug

Publications (1)

Publication Number Publication Date
CN205605160U true CN205605160U (en) 2016-09-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620396634.8U Active CN205605160U (en) 2016-05-05 2016-05-05 Formula of breaking tail pipe blanking plug

Country Status (1)

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CN (1) CN205605160U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930729A (en) * 2017-01-24 2017-07-07 中国海洋石油总公司 Electric submersible pump pump head blocking device and it is invested in the setting plug of electric submersible pump pump head
CN109577904A (en) * 2018-11-29 2019-04-05 四川圣诺油气工程技术服务有限公司 A kind of dissolvable formula tail pipe blanking plug
CN110374530A (en) * 2019-07-16 2019-10-25 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 A method of increasing tubing string depth of setting by changing tube fluid density

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930729A (en) * 2017-01-24 2017-07-07 中国海洋石油总公司 Electric submersible pump pump head blocking device and it is invested in the setting plug of electric submersible pump pump head
CN109577904A (en) * 2018-11-29 2019-04-05 四川圣诺油气工程技术服务有限公司 A kind of dissolvable formula tail pipe blanking plug
CN110374530A (en) * 2019-07-16 2019-10-25 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 A method of increasing tubing string depth of setting by changing tube fluid density

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20200921

Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No.

Patentee after: CHINA NATIONAL PETROLEUM Corp.

Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd.

Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology

Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd.

TR01 Transfer of patent right