CN2903648Y - Non welding sealed linking heat producing sleeve head - Google Patents
Non welding sealed linking heat producing sleeve head Download PDFInfo
- Publication number
- CN2903648Y CN2903648Y CN 200620099802 CN200620099802U CN2903648Y CN 2903648 Y CN2903648 Y CN 2903648Y CN 200620099802 CN200620099802 CN 200620099802 CN 200620099802 U CN200620099802 U CN 200620099802U CN 2903648 Y CN2903648 Y CN 2903648Y
- Authority
- CN
- China
- Prior art keywords
- upper connection
- ring
- upper adaptor
- production casing
- welding
- 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
Links
Images
Abstract
The utility model relates to a weldless seal connection thermal production casing head, which essentially comprises an upper adaptor, a hanger, a gland, a production casing, a bulk and the like, wherein steps are arranged respectively on the inboard and outboard on the lower end of the upper adaptor, therefore an annular cavity is formed respectively both between the outer ring of the upper adaptor and the main body and between the inner ring of the upper adaptor and the production casing, an inner metal seal ring and an outer metal seal ring are arranged respectively in the inner and outer annular space and are connected with the upper adaptor through welding, interference fit and screwed joint. The utility model makes use of a weldless seal connection thermal production casing head to achieve sealing through the inner metal seal ring and the outer metal seal ring made of shape memory alloy, and eliminates the safety and quality problem caused by the welding of the installation of ordinary thermal production casing head, simultaneously, which is able to be replaced when the upper adaptor is damaged.
Description
Technical field
The utility model relates to the well head control machinery of (gas) well that recovers the oil in the field produces, particularly a kind of non-welding sealed attachment thermal extraction casing head.
Background technique
At present, the thermal extraction casing head that the oil field is installed and used in the drilling and well completion process has the following disadvantages: in order to seal the high temperature in the production string (6), high pressure steam utilizes welding to carry out sealed attachment upper connection (1) and production string (6).And get angry and have potential safety hazard in the well site, and field welding difficulty big (overhead welding can not be incubated), and quality can not be guaranteed.In addition, owing to adopt welding to connect, the upper connection of general thermal recovery sleeve pipe damages the back and just can't change.
Summary of the invention
The utility model purpose is a kind of non-welding sealed attachment thermal extraction casing head, eliminates the safety and the quality problems that adopt welding to bring when general thermal extraction casing head is installed.
The utility model mainly is made up of upper connection 1, hanger 4, gland 5, production string 6, body 7 etc., the inboard, lower end and the outside in upper connection 1 are processed with step respectively, make between the outer shroud of upper connection 1 and the body 7 and between the interior ring of upper connection 1 and the production string 6 and formed a toroidal cavity respectively, in inside and outside annular space, be separately installed with the interior metallic packing ring made by marmem 2 and outside metallic packing ring 3, be connected with upper connection 1 by electric welding, interference fit or thread connecting mode respectively.
The utility model is realized sealing by adopting the inside and outside metallic packing ring of being made by marmem, be non-welding sealed attachment thermal extraction casing head, eliminated the safety and the quality problems that adopt welding to bring when general thermal extraction casing head is installed, after upper connection damages, also can change simultaneously.
Description of drawings
Fig. 1 the utility model structural representation
Embodiment
As shown in Figure 1, the utility model mainly is made up of upper connection 1, hanger 4, gland 5, production string 6, body 7 etc., the inboard, lower end and the outside in upper connection 1 are processed with step respectively, make between the outer shroud of upper connection 1 and the body 7 and between the interior ring of upper connection 1 and the production string 6 and formed a toroidal cavity respectively, in inside and outside annular space, be separately installed with the interior metallic packing ring made by marmem 2 and outside metallic packing ring 3, be connected with upper connection 1 by electric welding, interference fit or thread connecting mode respectively.
Interior metallic packing ring 2 and outer metallic packing ring 3 are made by marmem.And following in working order its size of the internal diameter of interior metallic packing ring 2 is less than the external diameter of production string, and following in working order its size of outer metallic packing ring 3 external diameters is greater than the internal diameter of body 7.
The hole of rising is pushed to the internal diameter of upper connection 1 and interior metallic packing ring 2 by elder generation before installing under a certain low temperature, makes its external diameter greater than production string 6, and externally the external diameter of metallic packing ring 3 pushes contraction simultaneously, makes its internal diameter less than body 7.
Heat assemblying body the back that is in place, scene, and the size restoration that makes seal ring is to initial state, reaches sealed attachment between the inboard of upper connection 1 and the production string 6 between the outside of realizing upper connection 1 and the body 7.
The structure of upper connection 1 can be following three kinds: the upper-end surface design has steel ring slot, and its top also is processed with screw thread.Can utilize screw thread and flange circle to realize sealed attachment; Top is processed with casing threads, and this screw thread can be an internal thread, also can be outside thread; The upper-end surface design has steel ring slot, and the gland that is processed with the scyewed joint hole with end face is used.
The utility model working principle is as follows: at first interior metallic packing ring 2 and outer metallic packing ring 3 are connected with upper connection 1 in advance by electric welding, interference fit or the mode that is threaded and guarantee sealing.And the shape memory effect that utilizes marmem to have, the internal diameter of internal metallic packing ring 2 pushes the hole of rising under a certain low temperature earlier, make its external diameter greater than production string 6, externally the external diameter of metallic packing ring 3 pushes contraction simultaneously, makes its internal diameter less than body 7.Then upper connection 1 and seal ring assemblying body are docked with casing head body 7 and production string 6 at the scene, after being in place assemblying body is heated, make seal ring size restoration that marmem makes to initial state (width dimensions of this state lower sealing ring is a bit larger tham the width of toroidal cavity), under the radial constraint of annular space, make seal ring produce very big expansion extrusion stress, thereby reach sealed attachment between the inboard of upper connection 1 and the production string 6 between the outside of realizing upper connection 1 and the body 7.
Claims (1)
1. non-welding sealed attachment thermal extraction casing head, mainly by upper connection (1), hanger (4), gland (5), production string (6), body compositions such as (7), it is characterized in that: the inboard, lower end and the outside in upper connection (1) are processed with step respectively, make between the outer shroud of upper connection (1) and the body (7) and between the interior ring of upper connection (1) and the production string (6) and formed a toroidal cavity respectively, interior, be separately installed with interior metallic packing ring (2) and the outer metallic packing ring (3) made by marmem in the outer ring space, respectively by electric welding, interference fit or thread connecting mode are connected with upper connection (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620099802 CN2903648Y (en) | 2006-03-24 | 2006-03-24 | Non welding sealed linking heat producing sleeve head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620099802 CN2903648Y (en) | 2006-03-24 | 2006-03-24 | Non welding sealed linking heat producing sleeve head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2903648Y true CN2903648Y (en) | 2007-05-23 |
Family
ID=38079062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620099802 Expired - Lifetime CN2903648Y (en) | 2006-03-24 | 2006-03-24 | Non welding sealed linking heat producing sleeve head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2903648Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804683A (en) * | 2016-05-20 | 2016-07-27 | 中国石油集团西部钻探工程有限公司 | Thermal recovery casing head for old well restoration |
-
2006
- 2006-03-24 CN CN 200620099802 patent/CN2903648Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804683A (en) * | 2016-05-20 | 2016-07-27 | 中国石油集团西部钻探工程有限公司 | Thermal recovery casing head for old well restoration |
| CN105804683B (en) * | 2016-05-20 | 2018-05-29 | 中国石油集团西部钻探工程有限公司 | Old well reparation thermal extraction casing head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202391353U (en) | Non-collar connection thread for petroleum oil pipe and casing | |
| CN201606024U (en) | All-metal sealing oil-gas wellhead device | |
| CN201443330U (en) | Novel wellhead and oil-producing tree | |
| CN101210485A (en) | Design method of expansion sleeve for oil field | |
| CN201835779U (en) | Oil expansion pipe seat sealing system | |
| CN2903648Y (en) | Non welding sealed linking heat producing sleeve head | |
| CN202176274U (en) | Air sealing threaded connecting structure for double-metal compound oil casing pipes | |
| CN104653129A (en) | Method for washing screw pumping well | |
| CN202391370U (en) | High temperature resistant expansion tubular column for oil drilling | |
| CN201428405Y (en) | Patch device for casing damaged well | |
| CN101333917A (en) | Elastic tube-type thermal production casing head | |
| CN203856443U (en) | Telescopic thermal recovery casing head device | |
| CN104563900A (en) | Metal rubber bearing and sealing-based expandable liner hanger joint | |
| CN205225142U (en) | Take sleeve pipe to set upright or straight geothermol power well head assembly of structure | |
| CN201092835Y (en) | Liner tube backing bonded repair tool | |
| CN201466660U (en) | Split type cable connection structure for oil gas exploitation intellect drill string adapter | |
| CN2929156Y (en) | Oil-water well casing tandem connector | |
| CN2711381Y (en) | Expanding type packing element | |
| CN201466659U (en) | Cable connection structure for oil gas exploitation intellect drill string adapter | |
| CN201568015U (en) | Micro-ring gap interporosity flow blocker | |
| CN205743816U (en) | Old well reparation thermal extraction casing head | |
| CN204402383U (en) | A kind of expandable liner hanger joint carrying based on metal-rubber and seal | |
| CN206625815U (en) | A kind of anti-leak thermal extraction casing head | |
| CN102094583B (en) | Underground composite cable and mounting device matched therewith | |
| CN216381253U (en) | Hot gas recovery seal screwed joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081212 Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee after: Western Drilling Kelamayi Drilling Technology Institute Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration |
|
| ASS | Succession or assignment of patent right |
Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG Effective date: 20081212 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070523 |
|
| EXPY | Termination of patent right or utility model |