CN206280047U - Temporary blocking type big orifice bridging plug - Google Patents

Temporary blocking type big orifice bridging plug Download PDF

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Publication number
CN206280047U
CN206280047U CN201621350607.3U CN201621350607U CN206280047U CN 206280047 U CN206280047 U CN 206280047U CN 201621350607 U CN201621350607 U CN 201621350607U CN 206280047 U CN206280047 U CN 206280047U
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China
Prior art keywords
cone
plug
slips
bridging plug
big orifice
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Active
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CN201621350607.3U
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Chinese (zh)
Inventor
高攀
李晓军
张胜鹏
刘河江
罗立新
刘玉涛
沈川伟
张昕
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 Xibu Drilling Engineering Co Ltd
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CNPC Xibu Drilling Engineering Co Ltd
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Priority to CN201621350607.3U priority Critical patent/CN206280047U/en
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Abstract

The utility model is related to big orifice bridge plug technology field, is a kind of temporary blocking type big orifice bridging plug;It includes big orifice bridging plug component and temporarily stifled plug;Big orifice bridging plug component includes central tube, packer accessory, lower cone, slips part and nose cone;Packer accessory, lower cone, slips part and nose cone are from top to bottom sequentially installed with central tube;Nose cone interior sealing on the downside of central tube is installed with temporarily stifled plug, and the temporarily stifled shear pin that temporarily blocked up by bridging plug between plug and nose cone is fixedly installed togather.The utility model reasonable and compact in structure, it is easy to use;The temporary blocking type big orifice bridging plug for setting can block down-hole pressure, it is to avoid down-hole pressure influences, and makes to enter process more Labor-saving safety under production tube;Under enter the operation of production tube after the completion of, the shear pin that temporarily block up bridging plug by that can be built the pressure is cut, and the passage of the bridging plug is opened, releases and blocks;Removed without brill during de-plugging, greatly reduce brill except risk and operating cost, it is practical.

Description

Temporary blocking type big orifice bridging plug
Technical field
The utility model is related to big orifice bridge plug technology field, is a kind of temporary blocking type big orifice bridging plug.
Background technology
The exploitation of unconventional oil field gas reservoir is increasingly paid attention to by In Oil Field Exploration And Development, due to Unconventional reservoir Porosity and permeability is very low, and preferable recovery ratio generally could be obtained by the way of staged fracturing;In staged fracturing , it is necessary to entering production tube down after segmentation carries out fracturing work in technique;But during entering production tube under, due to shaft bottom pressure Power is excessive, under enter to cause high effort for, there is potential safety hazard.
The content of the invention
The utility model provides a kind of temporary blocking type big orifice bridging plug, overcomes the deficiency of above-mentioned prior art, and it can have Effect is solved in staged fracturing, and production tube is difficult to down the problem for entering.
The technical solution of the utility model is realized by following measures:A kind of temporary blocking type big orifice bridging plug, including Big orifice bridging plug component and temporarily stifled plug;Big orifice bridging plug component includes central tube, packer accessory, lower cone, slips part and nose cone; Packer accessory, lower cone, slips part and nose cone are from top to bottom sequentially installed with central tube;It is close in nose cone on the downside of central tube Envelope is installed with temporarily stifled plug, and the temporarily stifled shear pin that temporarily blocked up by bridging plug between plug and nose cone is fixedly installed togather.
Here is the further optimization and/or improvements to above-mentioned utility model technical scheme:
Above-mentioned packer accessory may include to press overcoat and packing element;The top of upper pressure overcoat is cylindrical in shape and by the first shear pin Outside the top of central tube;At least two elastic claws for being in strip are distributed with upper pressure overcoat lower circumference, packing element is solid Surely it is connected to outside the elastic claw of pressure overcoat bottom;Lower cone includes that the packing element of middle and upper part sets section and the slips of bottom sets Section, packing element sets the outside of section in up-narrow and down-wide cone barrel, and the elastic claw bottom of upper pressure overcoat is sleeved on packing element and sets section Upper end outside;Nose cone is fixedly mounted on the lower end of central tube by the second shear pin;The pressure rating of the first shear pin is small In the pressure rating of the second shear pin;The pressure rating of the second shear pin temporarily blocks up the pressure rating of shear pin less than bridging plug.
Above-mentioned slips part may include retaining ring and slips;Cone mobile guide set is fixed with the upper end of nose cone, slips Bottom is cylindrical in shape, and is sleeved on the bottom of cone mobile guide set;Moved installed in cone by retaining ring in the downside of lower cone Outside the top of action-oriented set;The top circle distribution of slips has slips calvus, and slips sets section in inversed conical drum wide at the top and narrow at the bottom Shape, slips sets the inner top side that pars infrasegmentalis is seated at slips calvus;Central tube in lower cone upper end is externally provided with chuck, lower cone Upper end withstand in chuck and with central tube axial limiting.
Above-mentioned retaining ring can use pawl ring, cone mobile guide set it is outer be arranged in order up and down be distributed with obliquely Retaining teeth groove, is provided with the pawl being engaged in retaining teeth groove on the inner ring surface of pawl ring;Pawl ring is engaged by pawl and installed Outside the top of cone mobile guide set.
Above-mentioned temporarily stifled plug can be used and can melt plug.
It is above-mentioned to melt the melted plug that plug be almag material.
The utility model reasonable and compact in structure, it is easy to use;The temporary blocking type big orifice bridging plug for setting can be by underground pressure Power is blocked, it is to avoid down-hole pressure influences, and makes to enter process more Labor-saving safety under production tube;Under enter production tube operation complete Afterwards, the shear pin that temporarily block up bridging plug by that can be built the pressure is cut, and opens the passage of the bridging plug, releases closure;Removed without brill during de-plugging, greatly The big brill that reduces is practical except risk and operating cost.
Brief description of the drawings
Accompanying drawing 1 is the half-sectional structural representation of main view of the utility model most preferred embodiment.
Accompanying drawing 2 be accompanying drawing 1 in A-A to enlarged section structural representation.
Coding in accompanying drawing is respectively:Managed centered on 1,2 set section for packing element, and 3 is nose cone, and 4 is that bridging plug temporarily blocks up shear pin, 5 It is temporary stifled plug, 6 is upper pressure overcoat, and 7 is the second shear pin, and 8 is elastic claw, and 9 set section for slips, and 10 is the first shearing Pin, 11 is pawl ring, and 12 is slips, and 13 is cone mobile guide set, and 14 is slips calvus, and 15 is chuck, and 16 is packing element.
Specific embodiment
The utility model is not limited by following embodiments, can according to the technical solution of the utility model and actual conditions come Determine specific embodiment.
In the utility model, for the ease of description, the description of the relative position relation of each part is according to specification The Butut mode of accompanying drawing 1 is described, such as:The position relationship of upper and lower, left and right etc. is according to the Butut of Figure of description 1 Direction determines.
As shown in Figure 1, the temporary blocking type big orifice bridging plug includes big orifice bridging plug component and temporarily stifled plug 5;Big orifice bridge Plug assembly includes central tube 1, packer accessory, lower cone, slips part and nose cone 3;Envelope is from top to bottom sequentially installed with central tube 1 Spacing body, lower cone, slips part and nose cone 3;The interior sealing of nose cone 3 in the downside of central tube 1 is installed with temporarily stifled plug 5, temporarily stifled Shear pin 4 is temporarily blocked up between plug 5 and nose cone 3 by bridging plug to be fixedly installed togather.When using, after coiled tubing pressure break terminates, Specified location will first be entered under this bridging plug to set, then carry out entering work under production tube;This bridging plug for setting can be by underground pressure Power is blocked, it is to avoid down-hole pressure influences, and makes to enter process more Labor-saving safety under production tube;Under enter production tube operation complete Afterwards, the shear pin 4 that temporarily block up bridging plug by that can be built the pressure is cut, and opens the passage of the bridging plug, releases closure;The big orifice bridging plug for using Component is entirely capable of meeting production needs, is removed without boring, and greatly reduces brill except risk and operating cost, practical.
Above-mentioned temporary blocking type big orifice bridging plug can be made further optimization and/or improvements according to actual needs:
As shown in Figure 2, packer accessory includes upper pressure overcoat 6 and packing element 16;The top of upper pressure overcoat 6 is cylindrical in shape and by the One shear pin 10 is arranged on outside the top of central tube 1;At least two bullets for being in strip are distributed with the upper pressure lower circumference of overcoat 6 Property calvus 8, packing element 16 is fixedly connected on outside the elastic claw 8 of pressure overcoat 6 bottom;Lower cone includes that the packing element of middle and upper part sets The slips of section 2 and bottom sets section 9, and packing element sets the outside of section 2 in up-narrow and down-wide cone barrel, the elastic claw of upper pressure overcoat 6 The bottom of piece 8 is sleeved on packing element and sets outside the upper end of section 2;Nose cone 3 is fixedly mounted under central tube 1 by the second shear pin 7 End;Pressure rating of the pressure rating of the first shear pin 10 less than the second shear pin 7;Pressure of second shear pin 7 etc. Level temporarily blocks up the pressure rating of shear pin 4 less than bridging plug.When using, this bridging plug is lowered into setting position first, using setting tool Pressure overcoat 6 and packing element 16 apply to set pressure upwards, and when pressure applying is set to a certain extent, the first shear pin 10 is cut Disconnected, upper pressure overcoat 6 and packing element 16 are descending, while elastic claw 8 is flared out along the male cone (strobilus masculinus) that packing element sets section 2, can also give One downward thrust of lower cone, makes lower cone that slips part is acted on after moving down, and slips part is opened and central tube 1 is fixed On sleeve pipe;Be further continued for pressurization, packing element 16 is set in place, until the second shear pin 7 is cut, then by central tube 1 and Setting tool proposes well head, completes to set;Wherein, 8 need of elastic claw overcome with packing element set frictional resistance between section 2 and The reaction force that cone cylinder face is given is capable of achieving to set, compared to the existing big orifice bridge realized by packing element radial deformation and set Plug, needed for it to set pressure smaller, reduce and set difficulty, improve security.
As shown in Figure 1, slips part includes retaining ring and slips 12;Cone mobile guide is fixed with the upper end of nose cone 3 Set 13, the bottom of slips 12 is cylindrical in shape, and is sleeved on the bottom of cone mobile guide set 13;Pass through retaining in the downside of lower cone Ring is arranged on outside the top of cone mobile guide set 13;The top circle distribution of slips 12 has slips calvus 14, and slips sets section 9 In back taper tubular wide at the top and narrow at the bottom, slips sets the inner top side that the bottom of section 9 is seated at slips calvus 14;In lower cone upper end Central tube 1 is externally provided with chuck 15, the upper end of lower cone withstand in chuck 15 and with the axial limiting of central tube 1.During setting, As lower cone is moved down, the inverted cone surface that slips sets section 9 acts on slips calvus 14, with the increase of depression depths, slips pawl Piece 14 is flared out and fixes on internal surface of sleeve pipe the bridging plug.
As shown in Figure 1, retaining ring uses pawl ring 11, is distributed with outer being arranged in order up and down of cone mobile guide set 13 Inside retaining teeth groove obliquely, is provided with the pawl being engaged in retaining teeth groove on the inner ring surface of pawl ring 11;Pawl ring 11 leads to Pawl engagement is crossed to be arranged on outside the top of cone mobile guide set 13.So not only easy disassembly, and ensure that lower cone with Bonding strength between pawl ring 11.
As needed, temporarily the stifled use of plug 5 can melt plug.Plug can be melted can be melted after liquid is run into, and reduced underground and fallen Thing.
As needed, the melted plug that plug is almag material can be melted.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and optimal implementation Effect, can according to actual needs increase and decrease non-essential technical characteristic to meet the demand of different situations.
The use process of the utility model most preferred embodiment:
After coiled tubing pressure break terminates, the utility model is first lowered into setting position, is pressed upwards using setting tool Overcoat 6 and packing element 16 apply to set pressure, and when pressure applying is set to a certain extent, the first shear pin 10 is cut;Upper pressure Overcoat 6 and packing element 16 are descending, while elastic claw 8 is flared out along the male cone (strobilus masculinus) that packing element sets section 2, can also give lower cone one Individual downward thrust, makes lower cone that slips calvus 14 is acted on after moving down, and with the increase of depression depths, slips calvus 14 is outside Open and fix on internal surface of sleeve pipe the bridging plug;Pressurization is further continued for, packing element 16 is set in place, until the second shearing Pin 7 is cut, then central tube 1 and setting tool are proposed into well head, completes to set;After the temporary blocking type big orifice bridging plug sets, rise Go out cable and setting tool, then under enter production tube to bridging plug top;Oil pipe to be produced in place after, built the pressure by well head, cut Bridging plug temporarily blocks up shear pin, temporarily plug 5 is fallen into shaft bottom, oil pipe is entered under proceeding and ensures the normal of follow-up work to setting position Carry out.

Claims (6)

1. a kind of temporary blocking type big orifice bridging plug, it is characterised in that including big orifice bridging plug component and temporary stifled plug;Big orifice bridging plug Component includes central tube, packer accessory, lower cone, slips part and nose cone;From top to bottom be sequentially installed with central tube packer accessory, Lower cone, slips part and nose cone;Nose cone interior sealing on the downside of central tube is installed with temporarily stifled plug, temporarily stifled plug and nose cone Between by bridging plug temporarily block up shear pin be fixedly installed togather.
2. temporary blocking type big orifice bridging plug according to claim 1, it is characterised in that packer accessory includes upper pressure overcoat and packing element; The top of upper pressure overcoat is cylindrical in shape and is arranged on outside the top of central tube by the first shear pin;In upper pressure overcoat lower circumference At least two elastic claws for being in strip are distributed with, packing element is fixedly connected on outside the elastic claw of pressure overcoat bottom;Lower cone Packing element including middle and upper part sets section and the slips of bottom sets section, and packing element sets the outside of section in up-narrow and down-wide cone barrel, The elastic claw bottom of upper pressure overcoat is sleeved on packing element and sets outside the upper end of section;Nose cone is fixedly mounted on by the second shear pin The lower end of central tube;Pressure rating of the pressure rating of the first shear pin less than the second shear pin;Second shear pin Pressure rating temporarily blocks up the pressure rating of shear pin less than bridging plug.
3. temporary blocking type big orifice bridging plug according to claim 2, it is characterised in that slips part includes retaining ring and slips; The upper end of nose cone is fixed with cone mobile guide set, and the bottom of slips is cylindrical in shape, and is sleeved on the bottom of cone mobile guide set; It is arranged on outside the top that cone mobile guide covers by retaining ring in the downside of lower cone;The top circle distribution of slips has slips Calvus, slips sets section in back taper tubular wide at the top and narrow at the bottom, and slips sets the inner top side that pars infrasegmentalis is seated at slips calvus; The central tube of lower cone upper end is externally provided with chuck, the upper end of lower cone withstand in chuck and with central tube axial limiting.
4. temporary blocking type big orifice bridging plug according to claim 3, it is characterised in that retaining ring uses pawl ring, moves in cone Outer being arranged in order up and down of action-oriented set is distributed with interior retaining teeth groove obliquely, is provided with the inner ring surface of pawl ring and is engaged on only Move back the pawl in teeth groove;Pawl ring is engaged outside the top covered installed in cone mobile guide by pawl.
5. the temporary blocking type big orifice bridging plug according to Claims 1-4 any one, it is characterised in that temporarily stifled plug is using can Melt plug.
6. temporary blocking type big orifice bridging plug according to claim 5, it is characterised in that it is almag material that can melt plug Plug can be melted.
CN201621350607.3U 2016-12-09 2016-12-09 Temporary blocking type big orifice bridging plug Active CN206280047U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621350607.3U CN206280047U (en) 2016-12-09 2016-12-09 Temporary blocking type big orifice bridging plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621350607.3U CN206280047U (en) 2016-12-09 2016-12-09 Temporary blocking type big orifice bridging plug

Publications (1)

Publication Number Publication Date
CN206280047U true CN206280047U (en) 2017-06-27

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481308A (en) * 2016-12-09 2017-03-08 中国石油集团西部钻探工程有限公司 Method is entered under temporary blocking type big orifice bridging plug and production tube
CN108194025A (en) * 2017-11-08 2018-06-22 中国石油天然气股份有限公司 Oil pipe method under gas well no killing well
CN111287689A (en) * 2020-04-15 2020-06-16 西南石油大学 Single-slip full-soluble oil pipe plugging bridge plug
US11313192B2 (en) 2017-11-08 2022-04-26 Petrochina Company Ltd. Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106481308A (en) * 2016-12-09 2017-03-08 中国石油集团西部钻探工程有限公司 Method is entered under temporary blocking type big orifice bridging plug and production tube
CN106481308B (en) * 2016-12-09 2019-06-14 中国石油集团西部钻探工程有限公司 Production tube tripping in method
CN108194025A (en) * 2017-11-08 2018-06-22 中国石油天然气股份有限公司 Oil pipe method under gas well no killing well
US11313192B2 (en) 2017-11-08 2022-04-26 Petrochina Company Ltd. Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof
CN111287689A (en) * 2020-04-15 2020-06-16 西南石油大学 Single-slip full-soluble oil pipe plugging bridge plug

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GR01 Patent grant
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TR01 Transfer of patent right

Effective date of registration: 20201117

Address after: 100120 Beijing Xicheng District six laying Kang

Patentee after: CHINA NATIONAL PETROLEUM Corp.

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

Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China

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