CN207944913U - Exempt from brill formula blind plate - Google Patents
Exempt from brill formula blind plate Download PDFInfo
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- CN207944913U CN207944913U CN201721895856.5U CN201721895856U CN207944913U CN 207944913 U CN207944913 U CN 207944913U CN 201721895856 U CN201721895856 U CN 201721895856U CN 207944913 U CN207944913 U CN 207944913U
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- blind plate
- inner core
- lower contact
- top connection
- plate inner
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Abstract
The utility model is related to one kind exempting from brill formula blind plate, including top connection, lower contact, sealing mechanism and blind plate inner core, the raised ring-shaped step of inner wall below lower contact screw thread blocks blind plate inner core jointly with top connection bottom end, and blind plate inner core is respectively formed the cecum of sealing with top connection and lower contact.Brill formula blind plate is exempted from using this, tripping in drifting tool after well cementation smashes blind plate inner core.The utility model can directly tripping in drifting drill bit smash the normal drifting of blind plate, avoid bore plug damage casing risk, greatly simplify the complexity of tool and construction technology.
Description
Technical field
Exempt from brill formula blind plate the utility model is related to one kind in petroleum oil well completion field of engineering technology and is realized using the blind plate
Exempt from bore plug well shaft fixing technology.
Background technology
When implementing screen casing crest water flooding mud using sizing collar at present, tripping in drill bit is needed to bore except blind after the Hou Ning that cements the well
Plate, currently used well cementation blind plate material is aluminium or cement, first, the integral construction time is longer, second is that drill bit can when boring except blind plate
It can cause casing damage.It is common exempt to bore plug tool be after completing well cementation Hou Ning tripping in fishing spear pull out exempt from drill tools inner sleeve and
Blind plate, this tool and process matched therewith are relatively complicated, and there are salvaging risks of failure.
China Patent No. is 200720148888.9, entitled《Exempt to bore blind plate device》Utility model patent describe one
Kind is exempted to bore blind plate, the blind plate convex surface spherical in shape between top connection and lower contact, and the aluminium that bores that blind plate material is thickness 2mm closes
Gold.Hanger suppresses broken blind plate after setting by pressurization makes it fall to shaft bottom.Although this method can bore to avoid drill bit and remove blind plate,
But it is larger reguline metal to fall object often, is hidden some dangers for for later stage production；There is also the risks that broken blind plate failure is suppressed in pressurization.
Utility model content
The purpose of this utility model is in view of the problems of the existing technology, to provide one kind and exempting from brill formula blind plate, to solve
The problem of junk volume is excessive and suppresses broken blind plate failure.
Technical solution adopted by the utility model to solve its technical problems is：
Exempt from brill formula blind plate, including top connection, lower contact, sealing mechanism and blind plate inner core, wherein in below lower contact screw thread
Wall one ring-shaped step of protrusion blocks blind plate inner core jointly with top connection bottom end, and blind plate inner core distinguishes shape with top connection and lower contact
At the cecum of sealing.
Blind plate inner core is made of organic glass or ceramic material, and shape includes flat patty type or spherical concave surface.
The utility model can directly tripping in drifting drill bit smash the normal drifting of blind plate, avoid bore plug damage casing wind
Danger, greatly simplify the complexity of tool and construction technology, simultaneously because fallen after smashing object be fritter without angle particle, after reduction
Phase construction risk improves construction success rate.
Description of the drawings
Attached drawing 1 is the structural schematic diagram for exempting from brill formula blind plate.
1. top connection in figure, 2. sealing elements, 3. blind plate inner cores, 4. lower contacts.
Attached drawing 2 is to exempt from the casing programme schematic diagram that brill formula blind plate carries out exempting to bore plug well cementation using the utility model.
5. sizing collar in figure, 6. packers, 7. exempt to bore blind plate, 8 screen casings, 9. casings.
Specific implementation mode
The utility model is further described with reference to the accompanying drawings of the specification：
As shown in Fig. 1, this exempts from the upper lower contact of brill formula blind plate outfit in order to access in well cementation tubing string.Wherein top connection 1
It is threadedly coupled with lower contact 4, centre is added with sealing mechanism 2.The raised ring-shaped step of inner wall below lower contact 4 screw thread, and it is upper
Blind plate inner core 3 is blocked in 1 bottom end of connector jointly, and blind plate inner core 3 is made to be respectively formed the cecum of sealing with top connection 1 and lower contact 4.It is blind
Plate inner core 3 is made of fragile material, such as organic glass or ceramics etc..Flat patty type can be made, spherical female is may be alternatively configured
Face is to improve resistance to pressure.After well cementation, drifting drill bit can be used to blind plate position, blind plate inner core is smashed by mechanical shock
3.Little particle clast is formed after blind plate inner core 3 is broken, can be discharged with circulation of drilling fluid.The blind plate tool bore and casing left
Unanimously, construction in later period is not influenced.
Exempt from casing programme schematic diagram when brill formula blind plate carries out screen casing crest water flooding mud cementing operation using this and sees Fig. 2.It bores
After well, according to guide shoe-flushing valve-screen casing 8- blind plate 7- casings（External packer of pipe 6）The sequence of sizing collar 5- casings 9 according to
Secondary G.I.H.Completion tubular column tripping in is boosted by circulating fluid afterwards in place opens sizing collar 5, is further continued for boosting to swollen tube sealing
External packer 6.6 swollen envelope of external packer of pipe in place after by well head injection cement mortar carry out well cementing operation, seal 9 outer wall of casing with
Annular space between the borehole wall.It waits tripping in drifting tool after cementing the well, smashes 7 inner core of blind plate, circulating fluid is broken by blind plate inner core
Piece is washed into shaft bottom, completes work progress.
The blind plate can also be used for other petroleum works construction technologies for needing blind plate.
Claims (3)
1. exempting from brill formula blind plate, including top connection, lower contact, sealing mechanism and blind plate inner core, it is characterised in that under lower contact screw thread
The raised ring-shaped step of square inner wall blocks blind plate inner core, blind plate inner core and top connection and lower contact point jointly with top connection bottom end
The cecum of sealing is not formed.
2. according to claim 1 exempt from brill formula blind plate, it is characterised in that blind plate core shape includes flat patty type or ball
Shape concave surface.
3. according to claim 2 exempt from brill formula blind plate, it is characterised in that the blind plate inner core is organic glass or ceramic material
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721895856.5U CN207944913U (en) | 2017-12-29 | 2017-12-29 | Exempt from brill formula blind plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721895856.5U CN207944913U (en) | 2017-12-29 | 2017-12-29 | Exempt from brill formula blind plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207944913U true CN207944913U (en) | 2018-10-09 |
Family
ID=63701002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721895856.5U Active CN207944913U (en) | 2017-12-29 | 2017-12-29 | Exempt from brill formula blind plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207944913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989725A (en) * | 2017-12-29 | 2019-07-09 | 中石化石油工程技术服务有限公司 | Exempt from brill formula blind plate and exempts to bore plug well shaft fixing technology |
-
2017
- 2017-12-29 CN CN201721895856.5U patent/CN207944913U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989725A (en) * | 2017-12-29 | 2019-07-09 | 中石化石油工程技术服务有限公司 | Exempt from brill formula blind plate and exempts to bore plug well shaft fixing technology |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |