CN102383754A - Maneuvering oil production shearing antitheft well plugging device - Google Patents
Maneuvering oil production shearing antitheft well plugging device Download PDFInfo
- Publication number
- CN102383754A CN102383754A CN2011102956336A CN201110295633A CN102383754A CN 102383754 A CN102383754 A CN 102383754A CN 2011102956336 A CN2011102956336 A CN 2011102956336A CN 201110295633 A CN201110295633 A CN 201110295633A CN 102383754 A CN102383754 A CN 102383754A
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- China
- Prior art keywords
- flashboard
- cutter
- cutting knife
- wedge disc
- antitheft
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- 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.)
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Abstract
The invention discloses a maneuvering oil production shearing antitheft well plugging device which comprises a steel wire rope cutting wedge disc, a sealing shearing valve seat matched with the cutting wedge disc, a screw for pushing the cutting wedge disc to move and a nut of the screw. The cutting wedge disc is formed by a wedge disc and a cutter. The cutter is welded on the wedge disc or the cutter is fixedly connected to the wedge disc through a bolt. In the invention, the cutting wedge disc and the cutter in a cutting device are of an assembled structure, and thus, the wedge disc and the cutter can be respectively made of different materials, so that not only are the strength and the toughness of the cutter improved and the service life of the cutter is prolonged, but also the manufacturing cost is saved. Meanwhile, the nut is of a specific heptagon shape and can be opened only by being matched with a specific heptagon wrench, so the antitheft performance is good.
Description
Technical field
The present invention relates to the oilfield operation, be specifically related to the motor-driven oil recovery of oilfield downhole operation and shear antitheft shut-in well device.
Background technology
Along with the continuity of oil field development time, in oilfield development process, receive that stratum energy descends, down-hole casing damages, and numerous factor affecting such as technological development level, need close down oil-water well.At present, close down the general way of oil-water well and be, adopt motor-driven oil recovery to shear antitheft shut-in well device, treat that wire rope cuts off after, cut off flashboard with shear valve seat be adjacent to, well head is sealed.
Find that in use this device exists following defective: the one, the cutting knife in the shearing device is the overall structure of identical material with cutting off flashboard, if use high-strength materials; Will certainly increase manufacturing cost, if use general material, then low, the very easily damage of the cutting hardness of blade; Cut-out flashboard after the damage can only be made waste product and handle; Cause waste equally, increase the cost expenditure of enterprise, the 2nd, the nut on the screw mandrel that promotion cut-out flashboard moves in the prior art is positive eight rib type standard nuts; Any open-end wrench all can be turned on, anti-theft feature very a little less than.
Summary of the invention
The technical problem that the present invention will solve provides a kind of motor-driven oil recovery and shears antitheft shut-in well device, and not only cutting knife intensity is high, and it is convenient to change, and processing fitted seal performance is good between valve seat and the shear ram, and the nut on the screw mandrel has anti-theft feature.
The present invention realizes through following technical scheme:
Antitheft shut-in well device is sheared in a kind of motor-driven oil recovery; Comprise the sealing shearing valve seat that wire rope cuts off flashboard, cooperates with the cut-out flashboard; Also comprise and promote to cut off screw mandrel and the nut thereof that flashboard moves; Said cut-out flashboard is made up of flashboard and cutting knife, and cutting knife is welded in flashboard or cutting knife is fixed on flashboard through bolt.
The further improvement project of the present invention is that the cut-out flashboard is provided with the cutting knife slot, connects firmly through bolt in the cutting knife handle of a knife insertion slot; Said cutting knife adopts high speed mould steel to process.
The present invention further improvement project is, said nut is special heptagon, need join special heptagon spanner just can open.
The present invention compared with prior art has following obvious advantage:
One, the present invention is because cut-out flashboard and cutting knife in the shearing device are assembly structure, and therefore, flashboard and cutting knife can adopt number of various materials respectively, have both improved the intensity and the toughness of cutting knife, have prolonged the application life of cutting knife, have practiced thrift manufacturing cost again.
Two, because nut is special heptagon, need joins special heptagon spanner and just can open that theftproof performance is good.
Description of drawings
Fig. 1 is the axial cross-sectional schematic of the present invention.
Fig. 2 is for cutting off flashboard enlarged diagram (flashboard and cutting knife are welded in one).
Fig. 3 is for cutting off flashboard enlarged diagram (flashboard and cutting knife are connected in one through bolt).
Fig. 4 is a heptagon nut enlarged diagram.
The specific embodiment
Like Fig. 1, shown in 2, the present invention includes the sealing shearing valve seat 2 that wire rope cuts off flashboard 1, cooperates with cut-out flashboard 1, also comprise promoting to cut off screw mandrel 3 and the nut 4 thereof that flashboard 1 moves.Said cut-out flashboard 1 is made up of flashboard 1 and cutting knife 5, and cutting knife 5 is welded in flashboard 1.Said cutting knife 5 adopts high speed mould steel to process.
As shown in Figure 4, the nut 4 that is arranged on the screw mandrel 3 is the heptagon of non-five equilibrium.
When needs are shunt in a well, clamp the nut 4 on the screw mandrel 3 with special spanner, promote to cut off flashboard 1 to wire rope near, until wire rope is cut off, its blade touches in shearing valve seat 2 well is shut.
Embodiment 2
Like Fig. 1, shown in 3, said cut-out flashboard 1 is made up of flashboard 1 and cutting knife 5, and flashboard 1 is provided with cutting knife slot 6, and cutting knife handle of a knife 7 inserts in the slot 6 and connects firmly through bolt 8.
Said cutting knife 5 adopts high speed mould steel to process.
All the other are implemented like embodiment 1.
Claims (4)
1. antitheft shut-in well device is sheared in a motor-driven oil recovery; Comprise the sealing shearing valve seat that wire rope cuts off flashboard, cooperates with the cut-out flashboard; Also comprise and promote to cut off screw mandrel and the nut thereof that flashboard moves; It is characterized in that: said cut-out flashboard is made up of flashboard and cutting knife, and cutting knife is welded in flashboard or cutting knife is fixed on flashboard through bolt.
2. antitheft shut-in well device is sheared in a kind of motor-driven oil recovery as claimed in claim 1, it is characterized in that: cut off flashboard and be provided with the cutting knife slot, the cutting knife handle of a knife inserts in the slot and connects firmly through bolt.
3. antitheft shut-in well device is sheared in according to claim 1 or claim 2 a kind of motor-driven oil recovery, and it is characterized in that: said cutting knife adopts high speed mould steel to process.
4. antitheft shut-in well device is sheared in a kind of motor-driven oil recovery as claimed in claim 1, and it is characterized in that: said nut is a heptagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102956336A CN102383754A (en) | 2011-09-28 | 2011-09-28 | Maneuvering oil production shearing antitheft well plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102956336A CN102383754A (en) | 2011-09-28 | 2011-09-28 | Maneuvering oil production shearing antitheft well plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102383754A true CN102383754A (en) | 2012-03-21 |
Family
ID=45823542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102956336A Pending CN102383754A (en) | 2011-09-28 | 2011-09-28 | Maneuvering oil production shearing antitheft well plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102383754A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983331A (en) * | 2021-03-24 | 2021-06-18 | 大庆市天德忠石油科技有限公司 | Hydraulic double-gate plate well plugging device |
-
2011
- 2011-09-28 CN CN2011102956336A patent/CN102383754A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983331A (en) * | 2021-03-24 | 2021-06-18 | 大庆市天德忠石油科技有限公司 | Hydraulic double-gate plate well plugging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120321 |