CN207177850U - A kind of rupture disk perforated casing box cupling device - Google Patents
A kind of rupture disk perforated casing box cupling device Download PDFInfo
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- CN207177850U CN207177850U CN201720794250.6U CN201720794250U CN207177850U CN 207177850 U CN207177850 U CN 207177850U CN 201720794250 U CN201720794250 U CN 201720794250U CN 207177850 U CN207177850 U CN 207177850U
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- box cupling
- rupture disk
- nut
- perforation
- pressure cap
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Abstract
A kind of rupture disk perforated casing box cupling device, belong to oil-gas field development field of tool, including box cupling body, it is circumferentially spaced provided with the projection axially extended on box cupling body, several openings radially are provided with each projection, each open interior is provided with a nut, rupture disk is provided between nut one end and the bottom surface of opening, pressure cap is equiped with the other end of nut, the pressure cap forms the cavity of certain air pressure with nut and rupture disk, and one layer is scribbled in the pressure cap upper end can be from the softening film of dissolving；Perforating and fracturing is carried out using the utility model device, institute's connection sleeve pipe structural capacity is not destroyed, special perforation tool and workmen are not needed, it need not bore except ball seat operation, horizontal well perforation difficulty can be reduced, can arbitrarily be chosen the right moment control perforation, and convenient operational means is provided for test, control production, also construction cost is greatly reduced simultaneously, shortens construction period.
Description
Technical field
The utility model belongs to oil-gas field development field of tool, and in particular to a kind of rupture disk perforated casing box cupling device.
Background technology
Pressure break is one of Main Yield-increasing measure of oilfield prospecting developing, and perforation is an important step before pressure break,
Perforating job at present mainly has conventional perforation and hydraulic jet perforation two types.Conventional perforation operation is by perforating gun lower going-into-well
Explosion perforate after the predetermined level of eye, and then makes formation fluid enter well, the operating type construction cost and risk it is higher,
Professional construction troop, perforating gun and perforating bullet is needed to need storage, transport and the maintenance of specialty, perforation rear sleeve easily to rise footpath, set
Pipe intensity decreases, after controlling hole count perforation, current limliting sub-clustering pressure break implementation result is bad, and also oil-gas Layer is had a great influence；Waterpower is sprayed
Sand perforation is mainly the nozzle with high jet, and eyelet is ejected in target zone, allows formation fluid to enter well, this operation is to storage
Layer injury is much smaller, however, it stills need first tripping in specific purpose tool, again goes out it from underground after the completion of perforation, work of constructing
Sequence is complicated, and cost is higher.Moreover, horizontal well quantity increase in recent years is very fast, and uses current perforating modes in level
Task difficulty is also larger in well.
The content of the invention
In view of the deficienciess of the prior art, the purpose of this utility model is to propose a kind of rupture disk perforated casing box cupling
Device, it is not necessary to the special perforation tool of tripping in, sleeve body intensity is not destroyed, construction cost can be reduced, shorten the construction period, and
The difficulty of horizontal well perforation operation can be reduced.
In order to achieve the above object, the technical scheme that the utility model is taken is：
A kind of rupture disk perforated casing box cupling device, including box cupling body, it is circumferentially spaced on box cupling body to set
There is the projection axially extended, several openings radially are provided with each projection, each open interior is provided with one
Nut, a rupture disk is equiped between nut one end and the bottom surface of opening, pressure cap, the pressure are equiped with the other end of nut
Cap forms the cavity of certain air pressure with nut and rupture disk, and one layer is scribbled in the pressure cap upper end can be from the softening film of dissolving.
Further, 90 ° are spaced between the adjacent protrusion.
Further, the open amount in each projection is 3~4.
Further, the cavity air pressure is standard atmospheric pressure.
Compared with prior art, the beneficial effects of the utility model are：
The utility model device and the sleeve pipe that is connected together lower going-into-well bottom and complete well cementing operation, without rising, perforation
During operation, it is only necessary to pierced through and be open using high-pressure fluid, then project hole, therefore, during using the technology perforation, without again
The special perforation tool of tripping in, a trip time can be saved, shorten duty cycle；For horizontal well perforation operation, tradition
Perforation tool usually there is situation not placed in the middle, not only increase task difficulty, can also influence perforating quality, and the present apparatus is straight
The fitting borehole wall is connect, is not in problem not placed in the middle, and technique is simple, thus reduce horizontal well perforation difficulty；On the other hand, pass
The perforating job of an interval once, is completed in the every lower going-into-well bottom of perforation tool of uniting, and the utility model can be with one-trip string tripping in
Multiple described devices, so as to realize the perforating job that multiple intervals are drilled under one time, efficiency significantly improves；With the exception of this, penetrate
Hole operation is only carried out in opening described in the present apparatus, does not destroy the structural capacity and intensity of institute's connection sleeve pipe.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is cross-sectional view of the present utility model；
Fig. 3 is each part connection diagram in opening；
Fig. 4 is the present apparatus and sleeve pipe connection schematic diagram.
In figure：1st, box cupling body, 2, nut, 3, rupture disk, 4, pressure cap, 5, from dissolving softening film, 6, raised, 7, opening,
8th, sleeve pipe.
Embodiment
Structural principle of the present utility model is discussed in detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of rupture disk perforated casing box cupling device, including box cupling body 1, on box cupling body 1
A projection 6 axially extended along the circumferential direction is provided with interval of 90 °, three radially sides are offered on each raised 6
To opening 7, each inside of opening 7 is provided with a nut 2, a rupture is equiped between the one end of nut 2 and the bottom surface of opening 7
Disk 3, pressure cap 4 is equiped with the other end of nut 2, the pressure cap 4 is collectively forming with standard atmospheric pressure with nut 2, rupture disk 3
Cavity (referring to Fig. 3), scribbled in the upper end of pressure cap 4 one layer can from dissolving softening film 5.
Operation principle of the present utility model：
Before operation, when installing pressure cap 4 so that the pressure for the cavity that pressure cap 4 is formed with nut 2 and rupture disk 3 is standard
Atmospheric pressure, so, the startup pressure can of rupture disk 3 accurately control, it is not necessary to consider strata pressure, and be applied to pressure
The upper end of cap 4 softens film 5 from dissolving, can keep apart each part in opening 7 with cementing concrete, and utilize itself soluble spy
Point, melts completely within a period of time, and cement is dead by opening 7 after preventing well cementation with this；
During operation, device of the present utility model and the sleeve pipe 8 (referring to Fig. 4) that is connected together lower going-into-well bottom, well cementation is completed
Operation；When needing the perforation to go into operation, using conventional oil pipe or coiled tubing, by straddle type leather cup instrument or double K344 instruments across being interposed between this
Utility model device both ends, are then boosted by oil pipe, after rupture disk startup pressure (3000-4000psi) is reached, are broken through brokenly
Disk 3 is split, and then goes out pressure cap 4, subsequent hydraulic pressure continues high speed erosion, can make within five minutes or so the neighbouring cement of pressure cap, opening
Reach broken state with rock, and then peel off and form hole.
Claims (4)
1. a kind of rupture disk perforated casing box cupling device, including box cupling body (1), it is characterised in that：The edge on box cupling body (1)
Circumferencial direction is interval with the projection (6) axially extended, and several openings radially are provided with each raised (6)
(7) a nut (2) each, is provided with inside opening (7), one is equiped between nut (2) one end and the bottom surface of opening (7) and is broken
Disk (3) is split, is equiped with pressure cap (4) in the other end of nut (2), the pressure cap (4) forms one with nut (2) and rupture disk (3)
Determine the cavity of air pressure, one layer is scribbled in the pressure cap (4) upper end can be from the softening film (5) of dissolving.
2. rupture disk perforated casing box cupling device according to claim 1, it is characterised in that：It is described projection (6) it is adjacent it
Between be spaced 90 °.
3. rupture disk perforated casing box cupling device according to claim 1 or 2, it is characterised in that：On each projection (6)
The quantity of opening (7) is 3~4.
4. rupture disk perforated casing box cupling device according to claim 1, it is characterised in that：The cavity air pressure is standard
Atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720794250.6U CN207177850U (en) | 2017-07-03 | 2017-07-03 | A kind of rupture disk perforated casing box cupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720794250.6U CN207177850U (en) | 2017-07-03 | 2017-07-03 | A kind of rupture disk perforated casing box cupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207177850U true CN207177850U (en) | 2018-04-03 |
Family
ID=61735369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720794250.6U Active CN207177850U (en) | 2017-07-03 | 2017-07-03 | A kind of rupture disk perforated casing box cupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207177850U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130945A (en) * | 2017-07-03 | 2017-09-05 | 西安石油大学 | A kind of rupture disk perforated casing box cupling device |
| CN113374421A (en) * | 2020-02-25 | 2021-09-10 | 中国石油天然气股份有限公司 | Sleeve pipe |
-
2017
- 2017-07-03 CN CN201720794250.6U patent/CN207177850U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130945A (en) * | 2017-07-03 | 2017-09-05 | 西安石油大学 | A kind of rupture disk perforated casing box cupling device |
| CN113374421A (en) * | 2020-02-25 | 2021-09-10 | 中国石油天然气股份有限公司 | Sleeve pipe |
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