CN200949432Y - Clip type mandrel sleeve hanger - Google Patents
Clip type mandrel sleeve hanger Download PDFInfo
- Publication number
- CN200949432Y CN200949432Y CN 200620077843 CN200620077843U CN200949432Y CN 200949432 Y CN200949432 Y CN 200949432Y CN 200620077843 CN200620077843 CN 200620077843 CN 200620077843 U CN200620077843 U CN 200620077843U CN 200949432 Y CN200949432 Y CN 200949432Y
- Authority
- CN
- China
- Prior art keywords
- sealing shroud
- casing hanger
- hanger body
- casing
- sealing
- 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 - Lifetime
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a clip type core shaft casing hanger, which consists of a hanging part and a sealing part, mainly comprising a casing hanger body (1) and a seal sleeve (5). The casing hanger body (1) and the seal sleeve (5) are relatively independent, a plurality of mud encircling grooves (6) are arranged on the casing hanger body (1), a casing thread (9) is provided in the inner hole of the lower end of the casing hanger body (1), the seal sleeve (5) is arranged in the inner hole of the upper end of the casing hanger body (1), the external cylinder of the seal sleeve (5) is arranged with an annular groove (7) which is provided with an opening spring closing ring (4), a trapezoid transmission thread (8) is arranged in the inner hole if the upper end of the seal sleeve (5). The casing hanger body of the utility model is provided with a mud encircling channel which can improve the speed of mud encircling, that is the speed of drilling is enhanced, the annular space formed by the wellhead body and the casing is sealed by the seal sleeve, the utility model has advantages of reliable sealing, simple and quick operation and maintenance.
Description
Technical field
The utility model relates to a kind of cassette core sleeve pipe hanger, is the vitals of well head equipment, is used for suspension sleeve, the formed annular space of Sealed casing pipe and wellhead body.
Background technology
Present known mandrel formula casing hanger is rubber seal to be installed come Sealed casing pipe and the formed annular space of wellhead body on the cylindrical of casing hanger body, owing to do not have the mud circulation path on the casing hanger body, circulating mud if desired, mud can only flow out from the side outlet of the wellhead body of mandrel formula casing hanger bottom, because the nominal size of side outlet is little, the speed of mud circulation is slow, influence bit speed, simultaneously can the erosion wellhead body, influence the application life of well head.
Summary of the invention
The purpose of this utility model is: a kind of cassette core sleeve pipe hanger is provided, solve existing mandrel formula casing hanger formed annular space sealing problem and the slow-footed defective of circulating mud after suspension sleeve is seated wellhead body, be convenient to drilling well and well cementation, improve bit speed.
Technical solution of the present utility model is: this casing hanger is combined by suspended portion and hermetic unit, mainly by the casing hanger body, sealing shroud constitutes, the casing hanger body, sealing shroud is relatively independent, establish a plurality of mud circulation grooves on the casing hanger body, casing hanger body lower end endoporus has casing threads, endoporus is installed sealing shroud in casing hanger body upper end, establish cannelure on the cylindrical of sealing shroud, construction opening spring collar in the cannelure, sealing shroud and wellhead body are fixed together by the split ring collar, and endoporus is established trapezoidal motion thread in the sealing shroud upper end.
In the casing hanger of the present utility model, there is sealing ring at casing hanger body and sealing shroud fitting face place, establish sealing ring on the cylindrical of sealing shroud, establish the mud circulation passage on the sealing shroud, by the split ring collar sealing shroud and wellhead body are fixed together.
After suspension sleeve is seated wellhead body, during circulating mud, mud will pass through from a plurality of mud circulation grooves of casing hanger body, flow out from the side outlet of drilling spool, finish mud circulation, behind irrigating cannula hanger body and the wellhead body inner chamber, sealing shroud is packed into the formed annular space of sealing shroud Sealed casing pipe and wellhead body.
Casing hanger body of the present utility model and sealing shroud are relatively independent, the design of hanger body has the mud circulation passage, improve mud circulation speed, improved bit speed, the split ring collar is fixed together sealing shroud and wellhead body, the annular space of sealing shroud Sealed casing pipe and wellhead body is easy to installation and maintenance.
Description of drawings
Fig. 1 is the utility model cassette core sleeve pipe hanger structure chart.
Fig. 2 has novel cassette core sleeve pipe hanger work sheet for this reality.
Fig. 3 is that the split ring collar of the sealing shroud of Fig. 1 is realized the convergent-divergent schematic diagram.
Among the figure: 1. casing hanger body, 2. sealing ring, 3. sealing ring, 4. split ring collar, 5. sealing shroud, 6. mud circulation groove, 7. cannelure, 8. trapezoidal motion thread, 9. casing threads, 10. sleeve pipe, 11. wellhead body, 12. valves, 13. send into the taking-up instrument, 14. mud circulation passages.
The specific embodiment
As shown in Figure 1, 2, this casing hanger is combined by suspended portion and hermetic unit, mainly constitute by casing hanger body 1, sealing shroud 5, casing hanger body 1, sealing shroud 5 are relatively independent, establish a plurality of mud circulation grooves 6 on the casing hanger body 1, casing hanger body 1 lower end endoporus has casing threads 9, at casing hanger body 1 upper end endoporus sealing shroud 5 is installed, establish cannelure 7 on the cylindrical of sealing shroud 5, construction opening spring collar 4 in the cannelure 7 is established trapezoidal motion thread 8 at sealing shroud 5 upper end endoporus.
In the casing hanger of the present utility model, on the sealing shroud 5 at casing hanger body 1 and sealing shroud 5 fitting face places sealing ring 2 is arranged; The cylindrical of sealing shroud 5 is established sealing ring 3, and mud circulation passage 14 is established in sealing shroud 5 upper ends.
After suspension sleeve is seated wellhead body, during circulating mud, mud will pass through from a plurality of mud circulation grooves 6 of casing hanger body 1, flow out from the side outlet of drilling spool, finish mud circulation, behind irrigating cannula hanger body 1 and wellhead body 11 inner chambers, sealing shroud 5 is packed into sealing shroud 5 Sealed casing pipes 10 and wellhead body 11 formed annular spaces.
As Fig. 2, shown in 3, during work, suspension sleeve at first, instantly during last root sleeve pipe, casing hanger body 1 and sleeve pipe 10 are coupled together by casing threads 9, rely on the own wt of sleeve pipe, casing hanger body 1 is located on the step surface of wellhead body 11, according to the drilling technology flow process, need replace out the mud in the pit shaft, this moment, mud will be along the route of arrow, pass through from the mud circulation groove 6 of casing hanger body 1, enter sleeve pipe 10 and wellhead body 11 formed annular spaces, side outlet outflow from drilling spool at last enters the mud circulation pipeline, finish mud circulation, behind irrigating cannula hanger body 1 and wellhead body 11 inner chambers, sending into taking-up instrument 13 is connected with the trapezoidal motion thread 8 of the upper end of sealing shroud 5, send into the cylindrical guiding conical surface centering of the split ring collar 4 of the overcoat of taking-up instrument and sealing shroud, clockwise rotate the taking-up instrument of sending into, under the driving of screw thread pair, sending into the taking-up instrument moves down along the cylindrical of the split ring collar guiding conical surface, the split ring collar just slowly shrinks, up to screwing fully with sealing shroud, this moment, the split ring collar was retracted to minimum dimension, sealing shroud is located wellhead body 11 relevant positions, at this moment the taking-up instrument is sent in inhour rotation, and sending into the taking-up instrument can move up, and the split ring collar recovers nature, split ring collar appropriate section just is stuck in the cannelure 7 on sealing shroud 5 and the wellhead body 11, so just sealing shroud 5 and wellhead body 11 is fixed together.
Because there are certain magnitude of interference in sealing ring 2, sealing ring 3 when assembling, have certain frictional force when sending into the rotation of taking-up instrument and between the counterpart, and frictional force is smaller between the trapezoidal motion thread pair, therefore, when the taking-up instrument was sent in the inhour rotation, sealing shroud can and then not rotate.
When if maintenance needs to take out sealing shroud, the taking-up instrument is sent in utilization shrinks the split ring collar, and the split ring collar is deviate from the cannelure of wellhead body, just can take out sealing shroud.
Cylindrical at sealing shroud 5 is equipped with two sealing rings 2 and two sealing rings 3, and sealing shroud 5 seals by sealing ring 2 with casing hanger body 1 endoporus cooperation place, and sealing shroud 5 passes through sealing ring 3 sealings with the fitting face of wellhead body 11.
Claims (5)
1. cassette core sleeve pipe hanger, it is characterized in that: this casing hanger is combined by suspended portion and hermetic unit, mainly by casing hanger body (1), sealing shroud (5) constitutes, casing hanger body (1) is relatively independent with sealing shroud (5), establish a plurality of axial notch formula mud circulation grooves (6) on the outer ring of casing hanger body (1), casing hanger body (1) lower end endoporus has casing threads (9), endoporus is installed sealing shroud (5) in casing hanger body (1) upper end, establish cannelure (7) on the cylindrical of sealing shroud (5), the interior construction opening spring collar of cannelure (7) (4), endoporus is established trapezoidal motion thread (8) in sealing shroud (5) upper end.
2. cassette according to claim 1 core sleeve pipe hanger is characterized in that: sealing shroud (5) is fixing by split ring collar (4) with wellhead body (11).
3. cassette according to claim 1 core sleeve pipe hanger is characterized in that: on the sealing shroud at casing hanger body (1) and the fitting face place of sealing shroud (5) sealing ring (2) is arranged.
4. cassette according to claim 1 core sleeve pipe hanger is characterized in that: establish sealing ring (3) on the cylindrical of sealing shroud.
5. cassette according to claim 1 core sleeve pipe hanger is characterized in that: processing two holes are mud circulation passage (14) on the sealing shroud circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077843 CN200949432Y (en) | 2006-09-22 | 2006-09-22 | Clip type mandrel sleeve hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077843 CN200949432Y (en) | 2006-09-22 | 2006-09-22 | Clip type mandrel sleeve hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200949432Y true CN200949432Y (en) | 2007-09-19 |
Family
ID=38891975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620077843 Expired - Lifetime CN200949432Y (en) | 2006-09-22 | 2006-09-22 | Clip type mandrel sleeve hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200949432Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878945A (en) * | 2021-01-19 | 2021-06-01 | 江苏卫东机械有限公司 | Integral wellhead assembly |
-
2006
- 2006-09-22 CN CN 200620077843 patent/CN200949432Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878945A (en) * | 2021-01-19 | 2021-06-01 | 江苏卫东机械有限公司 | Integral wellhead assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jinhu Jinshi Valve Co., Ltd. Assignor: Jin Petroleum Gas Wellhead Science and Technology Co., Ltd., Jiangsu Contract fulfillment period: 2009.5.5 to 2015.5.4 Contract record no.: 2009320001429 Denomination of utility model: Clip type mandrel sleeve hanger Granted publication date: 20070919 License type: Exclusive license Record date: 20090807 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.5.5 TO 2015.5.4; CHANGE OF CONTRACT Name of requester: JINHU JINSHI VALVE CO., LTD. Effective date: 20090807 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070919 |
|
| EXPY | Termination of patent right or utility model |