CN201110153Y - Machine for blowout prevention of non casing thread oil water well head - Google Patents
Machine for blowout prevention of non casing thread oil water well head Download PDFInfo
- Publication number
- CN201110153Y CN201110153Y CNU2007200263958U CN200720026395U CN201110153Y CN 201110153 Y CN201110153 Y CN 201110153Y CN U2007200263958 U CNU2007200263958 U CN U2007200263958U CN 200720026395 U CN200720026395 U CN 200720026395U CN 201110153 Y CN201110153 Y CN 201110153Y
- Authority
- CN
- China
- Prior art keywords
- well
- hole
- spring
- inner cover
- well head
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The utility model provides a well-hole well plugging hole of an oil-water well without cannula screw thread, which belongs to a device on a well mouth of an oil field. The well plugging hole is provided with a joint, a steel cap is arranged on the outer of the joint, an inner cover is mounted in the joint through screw threads, the upper portion of the inner cover is provided with a hole, the lower portion of the hole is provided with a ball seat which is fixed on the inner cover, the outer of the ball seat is provided with a sleeve barrel which is fixed on the inner cover, a spring cover is mounted on the sleeve barrel through screw threads, the lower portion of the spring cover is provided with another hole, a spring is arranged in the spring cover, and a steel ball is mounted between the spring and the ball seat. The well mouth well plugging hole can be mounted on an oil-water well whose well mouth is cut and can not be connected with the screw threads of the cannula to prevent a lawbreaker from sawing, cutting and hacking up the well mouth device. The well-hole well plugging hole has the advantages of firmness, reliability, excellent burglar-proof property, simple structure and low manufacturing cost.
Description
Technical field
The utility model provides the device on a kind of oil field shaft mouth, especially a kind of blowout preventer.
Background technology
At present, in the oil extraction process, the lawless person can steal the sleeve pipe on the oil-water well well head of scrapping and isolate, and makes well head out of hand, will cause great loss in case blowout takes place.For this reason, people adorn ball-and-seat on well head or casing coupling, with cement mortar the well head sealing is got up, but the lawless person still can amputate the sleeve pipe below the box cupling again, make well head lose the box cupling that connects usefulness.Still can be amputated after refilling box cupling.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of no casing threads oil-water well well head blowout preventer, to improve its theftproof performance.
The utility model is to realize like this, no casing threads oil-water well well head blowout preventer, it has joint, and the joint outside has steel cap, the inside by screw thread inner cover to be installed, and the top of inner cover is porose, the below in this hole has ball seat to be fixed on the inner cover, the ball seat outside has sleeve to be fixed on the inner cover, and spring shield is installed on the sleeve by screw thread, and another hole is arranged at the spring shield bottom, spring is arranged in the spring shield, and steel ball is installed between spring and the ball seat.
This well head blowout preventer can be installed in well head and be cut, and on the oil-water well of the screw thread of no splicing sleeve, prevents that the lawless person from sawing, cut, smashing wellhead assembly, and solid and reliable, theftproof performance is good, and simple in structure, low cost of manufacture.
Description of drawings
Fig. 1 is the schematic diagram of the utility model structure.
The specific embodiment
Below in conjunction with description of drawings concrete structure of the present utility model and using method.
As shown in drawings, the no casing threads oil-water well well head blowout preventer of the utility model, it has joint 8, and the joint outside has steel cap 6, the inside by screw thread inner cover 9 to be installed, the top of inner cover porose 7, the below in this hole has ball seat 5 to be fixed on the inner cover, the ball seat outside has sleeve 4 to be fixed on the inner cover, and spring shield 1 is installed on the sleeve by screw thread, and another hole 10 is arranged at the spring shield bottom, spring 2 is arranged in the spring shield, and steel ball 3 is installed between spring and the ball seat.
During use, the lower end of joint is welded on well head steals on the sleeve pipe after cutting, then with in the joints of packing into such as inner cover, with the outside of steel calotte at joint, the lower end of steel cap is welded on the sleeve pipe again, thereby this blowout preventer is fixed on the well head.Can also be on this blowout preventer the sealing cement mortar.Steel ball is stuck in the ball seat under the effect of spring, play in the well head sleeve pipe to the plugging action of last effluent air, liquid.The anti-sawing of steel cap, the anti-ability of pounding are strong, can prevent effectively that the lawless person from destroying.
Claims (1)
1, no casing threads oil-water well well head blowout preventer, it is characterized in that, it has joint (8), and the joint outside has steel cap (6), the inside by screw thread inner cover (9) to be installed, the top of inner cover porose (7), the below in this hole has ball seat (5) to be fixed on the inner cover, the ball seat outside has sleeve (4) to be fixed on the inner cover, and spring shield (1) is installed on the sleeve by screw thread, and another hole (10) is arranged at the spring shield bottom, spring (2) is arranged in the spring shield, and steel ball (3) is installed between spring and the ball seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200263958U CN201110153Y (en) | 2007-08-27 | 2007-08-27 | Machine for blowout prevention of non casing thread oil water well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200263958U CN201110153Y (en) | 2007-08-27 | 2007-08-27 | Machine for blowout prevention of non casing thread oil water well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110153Y true CN201110153Y (en) | 2008-09-03 |
Family
ID=39894683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200263958U Expired - Fee Related CN201110153Y (en) | 2007-08-27 | 2007-08-27 | Machine for blowout prevention of non casing thread oil water well head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110153Y (en) |
-
2007
- 2007-08-27 CN CNU2007200263958U patent/CN201110153Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104373075A (en) | Fracturing packer | |
| CN206681707U (en) | Hammering oil discharger | |
| CN201110153Y (en) | Machine for blowout prevention of non casing thread oil water well head | |
| CN203188959U (en) | Planting device for cable of high-pressure injection wellhead | |
| CN210714594U (en) | Oil production wellhead assembly with spring safety valve | |
| CN204252930U (en) | Fracturing packer | |
| CN201090169Y (en) | Well head anchorage blowout preventer | |
| CN201306144Y (en) | Wellhead sealing device for oil-water well | |
| CN204782834U (en) | Novel continuous outside of tubes slips connector | |
| CN204851208U (en) | Sliding sleeve packer staged fracturing device | |
| CN103670314A (en) | Sand prevention hydraulic anchor | |
| CN208982015U (en) | A kind of well-flushing oil drain switch | |
| CN203879474U (en) | CO2 oil displacement injection well anticorrosion anti-seepage production tubular column | |
| CN204082061U (en) | Fracture used high-pressure sand-proof hydraulic anchor | |
| CN104514528B (en) | Reducer packing element lytic agent delivery device | |
| CN202596664U (en) | Wellhead backflow preventer | |
| CN203640659U (en) | Oil-water wellhead protecting cap | |
| CN203114236U (en) | Hand-releasing water blocking packer | |
| CN103573223B (en) | A kind of electric submersible pump automatically terminates the device of gas lock | |
| CN203808916U (en) | Releasing blowout preventer | |
| CN205936438U (en) | Sand control well centralizer | |
| CN104653140A (en) | Wellhead anti-theft device | |
| CN205154047U (en) | Ball formula release sub | |
| CN201588586U (en) | Slip sealed sleeve pup joint patch-connector | |
| CN204941465U (en) | Oil well operation environment-friendlycleaner cleaner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20100827 |