CN206874248U - A kind of pressure-feedback-type constant flow blanking plug - Google Patents

A kind of pressure-feedback-type constant flow blanking plug Download PDF

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Publication number
CN206874248U
CN206874248U CN201720833616.6U CN201720833616U CN206874248U CN 206874248 U CN206874248 U CN 206874248U CN 201720833616 U CN201720833616 U CN 201720833616U CN 206874248 U CN206874248 U CN 206874248U
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CN
China
Prior art keywords
outer barrel
cone valve
pressure
valve rod
blanking plug
Prior art date
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Active
Application number
CN201720833616.6U
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Chinese (zh)
Inventor
李思聪
蔡兵
唐海涛
宋延彰
韩传会
蔡卫军
腾小龙
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.)
Petrochina Co Ltd
Daqing Oilfield Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
Daqing Oilfield Co Ltd
China Petroleum and Natural Gas Co Ltd
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Application filed by Daqing Oilfield Co Ltd, China Petroleum and Natural Gas Co Ltd filed Critical Daqing Oilfield Co Ltd
Priority to CN201720833616.6U priority Critical patent/CN206874248U/en
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Publication of CN206874248U publication Critical patent/CN206874248U/en
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Abstract

It the utility model is related to a kind of pressure-feedback-type constant flow blanking plug.Mainly solve the problems, such as that existing blanking plug shortens survey and adjust the cycle because of the easily failure of the reasons such as sand card, corrosion.It is characterized in that:The fishing head(10)Pressure compensation opening is provided with side wall(11), the outer barrel epimere(9)Inside is equipped with cone valve valve rod(5), cone valve valve rod(5)On be fixed with platen(13), platen(13)Top and outer barrel epimere(9)Bottom contacts above, cone valve valve rod(5)Cone valve spring is cased with outside stage casing(8), the outer barrel epimere(9)Inside is from top to bottom fixed with secondary screen successively(7)With one-level filter screen(6), and outer barrel epimere(9)Water injection hole is provided with the side wall of bottom(15);The cone valve valve rod(5)Bottom is fixed with cone valve bonnet(4).The pressure-feedback-type constant flow blanking plug avoids sand card, corrosion, extends to survey and adjusts the cycle, effectively reduce the labor intensity surveyed and adjust workmen, improves to survey and adjust efficiency.

Description

A kind of pressure-feedback-type constant flow blanking plug
Technical field
Oilfield is the utility model is related to, specifically a kind of pressure-feedback-type constant flow blanking plug.
Background technology
It is core that oil field, which enters the steady oil control water of mid-later development phase, therefore, in order to efficiently control on water ratio in oil well The rate of climb is risen with oil field composite water cut, improves Development Response of Oilfield, it is desirable to each oil reservoir block, each water injection well Group, each series of strata strict implement geology injection allocation requirement.Purpose using constant flow blanking plug is exactly to change to match somebody with somebody fluence and blanking plug Relation between front and rear pressure difference, blanking plug is adapted to the change of front and rear pressure difference automatically, and make corresponding adjustment, effectively to cut down Pressure difference changes the influence to flow, as keeps flow constant as possible.And existing constant flow blanking plug is because of reasons such as sand card, corrosions Can not ensure within the work period it is permanent effectively so that this certain amount of decreasing water distribution method can not be applied well.
The content of the invention
In order to overcome the shortcomings of that existing blanking plug shortens survey and adjust cycle, this reality because of the easily failure of the reasons such as sand card, corrosion With a kind of pressure-feedback-type constant flow blanking plug of new offer, the pressure-feedback-type constant flow blanking plug avoids sand card, corrosion, extends Survey and adjust the cycle, effectively reduce the labor intensity surveyed and adjust workmen, improve to survey and adjust efficiency.
The technical solution of the utility model is:A kind of pressure-feedback-type constant flow blanking plug, including fishing head, the fishing head Bottom is connected with outer barrel, and outer barrel is divided into outer barrel epimere and outer barrel hypomere, pressure compensation opening is provided with the fishing head side wall, described Intersegmental part is equipped with cone valve valve rod on outer barrel, platen is fixed with cone valve valve rod, and connect at the top of platen with bottom above outer barrel epimere Touch, be cased with cone valve spring outside cone valve valve rod stage casing, on the outer barrel intersegmental part be from top to bottom fixed with successively secondary screen and One-level filter screen, cone valve spring bottom and secondary screen top contact, and it is provided with water injection hole in the side wall of outer barrel epimere bottom;It is described Cone valve stem bottom is fixed with cone valve bonnet, and cone valve bonnet outer is engaged with the ceramic water nozzle endoporus of intersegmental part under outer barrel, And outer barrel hypomere bottom is connected with filter screen.
The utility model has the advantages that:Due to taking such scheme, the constant flow blanking plug is as a result of two Level filter screen, the problem of avoiding sand card, the corrosion of internal activity part, extend to survey and adjust the cycle;Effectively reduced in tune construction is surveyed The labor intensity for adjusting workmen is surveyed, improves to survey and adjusts efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
1- filter screens in figure, 2- ceramic water nozzles, 3- outer barrel hypomeres, 4- cone valve bonnets, 5- cone valve valve rods, 6- one-level filter screens, 7- Secondary screen, 8- cone valve springs, 9- outer barrel epimeres, 10- fishing heads, 11- pressure compensation openings, 12- sealed packings, 13- platens, 14- positive stop lug boss, 15- water injection holes.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of pressure-feedback-type constant flow blanking plug, including fishing head 10, the bottom of fishing head 10 connection There is outer barrel, for sake of convenience, outer barrel is divided into outer barrel epimere 9 and outer barrel hypomere 3 here.Pressure is provided with the side wall of fishing head 10 Dynamic balance hole 11, cone valve valve rod 5 is equipped with inside the outer barrel epimere 9, and sealing is provided between outer barrel epimere 9 and cone valve valve rod 5 Packing 12.Platen 13 is fixed with cone valve valve rod 5, and the top of platen 13 contacts bottom above with outer barrel epimere 9, cone valve valve rod 5 Cone valve spring 8 is cased with outside stage casing.Secondary screen 7 and one-level filter screen are from top to bottom fixed with successively inside the outer barrel epimere 9 6, common middle outer barrel epimere 9 is provided with positive stop lug boss 14, and the one-level filter screen 6 of bottom is stuck on positive stop lug boss 14, the bottom of cone valve spring 8 With the top contact of secondary screen 7, and water injection hole 15 is provided with the side wall of the bottom of outer barrel epimere 9.The inside of outer barrel hypomere 3 is provided with Ceramic water nozzle 2, the bottom of cone valve valve rod 5 are fixed with cone valve bonnet 4, and the outer surface of cone valve bonnet 4 matches with the endoporus of ceramic water nozzle 2 Close, and the bottom of outer barrel hypomere 3 is connected with filter screen 1, ceramic water nozzle 2 is placed in inside filter screen 1.
The constant flow blanking plug shares two-step throttle device, when ceramic water nozzle 2, second, cone valve device, in actual use No matter the ceramic water nozzle of which kind of model is used, and it is definite value that its is sharp-tongued, and the sharp-tongued of cone valve device changes with pressure change.
According to principles of hydrodynamics, the relational expression by the fluid flow of water nozzle is:
Q=kA
Wherein:Q is the fluid flow by water nozzle
K is dimensionless group
A is effective area of passage of water nozzle
P is pressure
For fluid density
Herein, fluid is water, and density is definite value.Obviously, the constant of flow is realized, it is necessary to study pressure and excessively stream Relation between area.
As a result of pressure feedback mode, it can be seen from force analysis, when water filling pressure increases(Or stratum pressure drop It is low)When, platen on cone valve valve rod can compression spring move downward, the aperture of cone valve reduces, and the area of passage A of cone valve is at this Also reduce therewith in parameter area in design, so keep flow constant.

Claims (1)

1. a kind of pressure-feedback-type constant flow blanking plug, including fishing head(10), the fishing head(10)Bottom is connected with outer barrel, outside Cylinder is divided into outer barrel epimere(9)With outer barrel hypomere(3), it is characterised in that:The fishing head(10)Pressure compensation opening is provided with side wall (11), the outer barrel epimere(9)Inside is equipped with cone valve valve rod(5), cone valve valve rod(5)On be fixed with platen(13), and platen (13)Top and outer barrel epimere(9)Bottom contacts above, cone valve valve rod(5)Cone valve spring is cased with outside stage casing(8), the outer barrel Epimere(9)Inside is from top to bottom fixed with secondary screen successively(7)With one-level filter screen(6), cone valve spring(8)Filtered with two level bottom Net(7)Top contact, and outer barrel epimere(9)Water injection hole is provided with the side wall of bottom(15);The cone valve valve rod(5)Bottom is fixed There is cone valve bonnet(4), cone valve bonnet(4)Outer surface and outer barrel hypomere(3)Internal ceramic water nozzle(2)Endoporus is engaged, and outside Cylinder hypomere(3)Bottom is connected with filter screen(1).
CN201720833616.6U 2017-07-11 2017-07-11 A kind of pressure-feedback-type constant flow blanking plug Active CN206874248U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720833616.6U CN206874248U (en) 2017-07-11 2017-07-11 A kind of pressure-feedback-type constant flow blanking plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720833616.6U CN206874248U (en) 2017-07-11 2017-07-11 A kind of pressure-feedback-type constant flow blanking plug

Publications (1)

Publication Number Publication Date
CN206874248U true CN206874248U (en) 2018-01-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720833616.6U Active CN206874248U (en) 2017-07-11 2017-07-11 A kind of pressure-feedback-type constant flow blanking plug

Country Status (1)

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CN (1) CN206874248U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110107266A (en) * 2019-05-21 2019-08-09 中国石油化工股份有限公司 A kind of double close double opens blanking plug
CN111852421A (en) * 2019-04-30 2020-10-30 中国石油天然气股份有限公司 Large differential pressure separated injection multi-stage regulation and control water distributor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111852421A (en) * 2019-04-30 2020-10-30 中国石油天然气股份有限公司 Large differential pressure separated injection multi-stage regulation and control water distributor
CN111852421B (en) * 2019-04-30 2022-08-30 中国石油天然气股份有限公司 Large differential pressure separated injection multi-stage regulation and control water distributor
CN110107266A (en) * 2019-05-21 2019-08-09 中国石油化工股份有限公司 A kind of double close double opens blanking plug

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