CN201474669U - Plugging tubing string of non-productive well - Google Patents
Plugging tubing string of non-productive well Download PDFInfo
- Publication number
- CN201474669U CN201474669U CN2009201474071U CN200920147407U CN201474669U CN 201474669 U CN201474669 U CN 201474669U CN 2009201474071 U CN2009201474071 U CN 2009201474071U CN 200920147407 U CN200920147407 U CN 200920147407U CN 201474669 U CN201474669 U CN 201474669U
- Authority
- CN
- China
- Prior art keywords
- sealed tube
- packing element
- valve body
- valve seat
- slip sleeve
- 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
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a plugging tubing string of a non-productive well, which is characterized in that a casing coupling is connected with a casing string, a suspension joint is linked with the upper part of the casing coupling, the upper part of a connection tube is internally threaded with the lower part of the suspension joint, the lower part of the connection tube is connected with the upper part of a slip sleeve through big internal threads, the thread of the upper part of a sealed tube is connected with the small internal thread of the upper part of the slip sleeve, a retain joint is connected to the lower part of the sealed tube, a rubber cylinder shaft is sleeved on the sealed tube, a rubber cylinder unit is sleeved on the rubber cylinder shaft, a cone is arranged above the rubber cylinder unit, a slip is arranged between the cone and the slip sleeve, a valve seat is installed on the upper part of the sealed tube, a valve body is inversely arranged on the lower end surface of the valve seat, the valve body is supported by a closed spring, an end face sealing ring is arranged on the contact end surface of the valve seat and the valve body, and the rubber cylinder unit consists of two rubber cylinders and a retainer. The upper part of the suspension joint is plugged by a blocking plug. The utility model make the non-productive well being plugged, so that abandoned wells, long-term non-productive wells and wells to be repaired can be controlled, and serious economic loss can be avoided. The utility model can easily remove plugging, reduces construction cost and greatly improves the economic benefit.
Description
One, technical field
The utility model is a kind of oil well device, is a kind of dead well shutoff tubing string.
Two, background technology
All there are some abandoned wells, long-term dead well in each oil field, treat well workover, and these wells are because will be through the off-time of certain hour, and wellhead assembly is all imperfect, after the off-time is long, borehole pressure rises, and borehole fluid can flow out well head, can occur crude oil on the one hand and run off, also might cause blowout, major accident occurs, also environment pollution can occur on the other hand, also can fall into object on the one hand again, cause that oil well scraps, cause heavy economic losses.For addressing these problems, adopt the way of cementing plug in well at present at the scene, this way flow chart is many, the expense height, the engineering time is long, when needs are removed shutoff, needs to bore plug, and workload is big, and is less economical.
Three, summary of the invention
The purpose of this utility model is a kind of dead well shutoff tubing string of design, makes abandoned well, long-term dead well, treats that well workover is controlled, removes shutoff easily, reduces operating expenses, the economic loss of avoiding blowout to cause.
The purpose of this utility model is achieved in that by suspension joint, casing coupling, connecting tube, valve seat, end-face seal ring, valve body, close spring, slip sleeve, slips, cone, sealed tube, the packing element group, the packing element axle, the retaining joint, sleeve pipe is formed, casing coupling is connected with casing string, suspension joint connects with casing coupling top, connecting tube top is connected with the suspension joint lower internal thread, the connecting tube bottom is threaded with slip sleeve top imperial palace, sealed tube top screw thread is connected with the little internal thread in slip sleeve top, the retaining joint is connected the sealed tube bottom, the packing element axle sleeve is contained on the sealed tube, and be on the retaining joint, the packing element group is sleeved on the packing element axle, be cone on the packing element group, between cone and the slip sleeve slips is arranged, valve seat is installed on sealed tube top, and valve body falls seat on the valve seat lower surface, valve body supports by closing spring, close spring lower end seat in sealed tube on the shoulder, valve seat contacts the end with valve body end-face seal ring, and the packing element group is made up of two packing elements and spacer ring.
Suspension joint top is stopped up by stopping up head.
The beneficial effects of the utility model are: after the utility model is installed in the dead well well head, make dead well be in sealed condition, make abandoned well, long-term dead well, treat that well workover is controlled, borehole fluid can not flow out well head, can not occur crude oil on the one hand and run off, gas blowout accident can not occur, environment pollution can not occur yet, can not fall into object and cause that oil well scraps, can avoid heavy economic losses.Remove shutoff easily, reduce operating expenses, have remarkable economic efficiency.
Four, description of drawings
Accompanying drawing is the assembling drawing of the utility model embodiment.
Five, the specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
Embodiment of the present utility model is by stopping up 1, suspension joint 2, casing coupling 3, connecting tube 4, valve seat 5, end-face seal ring 6, valve body 7, close spring 8, slip sleeve 9, slips 10, cone 11, sealed tube 12, packing element group 13, packing element axle 14, retaining joint 15, sleeve pipe 16 is formed, casing coupling 3 is connected with casing string 16, suspension joint 2 connects with casing coupling 3 tops, connecting tube 4 tops are connected with suspension joint 2 lower internal thread, connecting tube 4 bottoms are threaded with slip sleeve 9 top imperial palaces, sealed tube 12 top screw threads are connected with the little internal thread in slip sleeve 9 tops, retaining joint 15 is connected sealed tube 12 bottoms, packing element axle 13 is sleeved on the sealed tube 12, and be on the retaining joint 15, packing element group 13 is sleeved on the packing element axle 14, it on the packing element group 13 cone 11, between cone 11 and the slip sleeve 9 slips 10 is arranged, valve seat 5 is installed on sealed tube 12 tops, valve body 7 falls seat on valve seat 5 lower surfaces, valve body 7 supports by closing spring 8, close spring 8 lower end seats in sealed tube 12 on the shoulder, valve seat 5 contacts the end with valve body 7 end-face seal ring 6, and packing element group 13 is made up of two packing elements and spacer ring.Suspension joint 2 tops are by stopping up 1 obstruction, and protection connecting tube 4 inner bodies are not damaged.
During the shutoff oil well, to stop up 1 takes away, be lowered to instrument rotary valve base 5, make the connecting thread between sealed tube 12 and the slip sleeve 9 move back button, sealed tube 12 is up, is about to slips 10 on the cone 11 release and be anchored on the sleeve pipe 16, continues rotary valve base 5, cone 11 is motionless, and packing element group 13 is compressed expansion Sealed casing pipe 16.Need put when pressing, take away and stop up 1, compressing valve body 7, passage is opened can pressure release.When needing to remove shutoff, be lowered to instrument reverse rotation valve seat 5, make on the connecting thread between sealed tube 12 and the slip sleeve 9 and detain, sealed tube 12, the retaining joint 15 descending, packing element group 13 restores to the original state, cone 11 descending releasing grapplings, thus remove shutoff, can will the utility model proposes, oil well is resumed production.
Claims (2)
1. dead well shutoff tubing string, by suspension joint (2), casing coupling (3), connecting tube (4), valve seat (5), end-face seal ring (6), valve body (7), close spring (8), slip sleeve (9), slips (10), cone (11), sealed tube (12), packing element group (13), packing element axle (14), retaining joint (15), sleeve pipe (16) is formed, it is characterized in that: casing coupling (3) is connected with casing string (16), suspension joint (2) connects with casing coupling (3) top, connecting tube (4) top is connected with suspension joint (2) lower internal thread, connecting tube (4) bottom is threaded with slip sleeve (9) top imperial palace, sealed tube (12) top screw thread is connected with the little internal thread in slip sleeve (9) top, retaining joint (15) is connected sealed tube (12) bottom, packing element axle (13) is sleeved on the sealed tube (12), and be on the retaining joint (15), packing element group (13) is sleeved on the packing element axle (14), on the packing element group (13) cone (11), between cone (11) and the slip sleeve (9) slips (10) is arranged, valve seat (5) is installed on sealed tube (12) top, valve body (7) falls seat on valve seat (5) lower surface, valve body (7) supports by closing spring (8), close spring (8) lower end seat in sealed tube (12) on the shoulder, valve seat (5) contacts the end with valve body (7) end-face seal ring (6), and packing element group (13) is made up of two packing elements and spacer ring.
2. dead well shutoff tubing string according to claim 1 is characterized in that: suspension joint (2) top is stopped up by stopping up head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201474071U CN201474669U (en) | 2009-03-26 | 2009-03-26 | Plugging tubing string of non-productive well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201474071U CN201474669U (en) | 2009-03-26 | 2009-03-26 | Plugging tubing string of non-productive well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474669U true CN201474669U (en) | 2010-05-19 |
Family
ID=42410917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201474071U Expired - Fee Related CN201474669U (en) | 2009-03-26 | 2009-03-26 | Plugging tubing string of non-productive well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201474669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593892A (en) * | 2020-12-29 | 2021-04-02 | 西安石油大学 | Variable-diameter incomplete rubber sleeve packer |
-
2009
- 2009-03-26 CN CN2009201474071U patent/CN201474669U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593892A (en) * | 2020-12-29 | 2021-04-02 | 西安石油大学 | Variable-diameter incomplete rubber sleeve packer |
| CN112593892B (en) * | 2020-12-29 | 2021-10-12 | 西安石油大学 | Variable-diameter incomplete rubber sleeve packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20150326 |
|
| EXPY | Termination of patent right or utility model |