CN101333917A - Elastic tube-type thermal production casing head - Google Patents
Elastic tube-type thermal production casing head Download PDFInfo
- Publication number
- CN101333917A CN101333917A CNA2008100171921A CN200810017192A CN101333917A CN 101333917 A CN101333917 A CN 101333917A CN A2008100171921 A CNA2008100171921 A CN A2008100171921A CN 200810017192 A CN200810017192 A CN 200810017192A CN 101333917 A CN101333917 A CN 101333917A
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- steel cylinder
- type thermal
- thermal production
- casing head
- production casing
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Abstract
The invention relates to an elastic pipe type thermal production casing head in the oil well casing connecting piece. The technical proposal includes that a lower flange is butt joint with an upper flange after a hanging steel cylinder is nested in the lower flange; the bottom end of the hanging steel cylinder is provided with a convex rim with contracted diameter; the convex edge is matched with the convex edge with expanded diameter on the periphery of the upper end part of a telescopic pipe; an elastic pipe is threaded through the inner cavity chamber of the hanging steel cylinder and connected between the upper end opening of the telescopic pipe and the upper end opening of the hanging steel cylinder; screw thread connected with the an outer casing is arranged on the lower end pipe wall of the lower flange. The elastic pipe type thermal production casing head well solves the telescopic problem of the telescopic pipe due to the thermal expansion because the elastic pipe additionally arranged in the hanging steel cylinder is connected with the telescopic pipe; thereby, the safety hidden trouble in the current welding fixation mode is solved completely. The elastic pipe type thermal production casing head has the advantages of novel integral structure design, convenient and stable mounting and application, reducing the production cost and ensuring the thermal production to operate safely.
Description
Technical field
The present invention relates to a kind of elastic tube-type thermal production casing head in oil well casing connector field, be particularly suitable for supporting use in the heavy oil wells thermal recovery production.
Background technology
Thick oil underground well makes that because of viscosity high fluidity difference its development cost is higher, hangs down period in oil price, and the exploitation of viscous crude gets the brush-off, and be in consistent with relevant equipment of its production practice falls behind and simple state.The consistent doughnut-shaped steel plate that uses of the fixing and installation of heavy oil development well head welds at present, instantly telescoping tube expanded by heating after the steam injection, the weld seam of welding is promptly backed down, wellhead assembly will be in uncertain the unknown up and down in plumbness like this, telescoping tube also is in no restrained condition in direction of rotation, cause operation to be difficult to control, accident potential is serious.Particularly the installing in the shackle process of well head, releasing will appear in the connection between the telescoping tube, thereby the thermal medium that injects in causing leaks, and telescoping tube can penetrate pit shaft to mid-air explosion when serious under the effect of high-temperature high-pressure medium.
Along with increasing rapidly of oil price, the heavy oil wells Simulation on whole pay zones receives publicity and payes attention to, and supporting with it thermal production well mouth overlaps the problem of researching and developing application for people that is developed to of pipe connections.
Summary of the invention
Purpose of the present invention is exactly the defective that exists at prior art, and simple in structure, easy to operate, safe and reliable elastic tube-type thermal production casing head is provided.
Its technical scheme is: dock in upper flange be inserted in the suspension body steel cylinder in lower flange after, suspension body steel cylinder bottom has the convex edge of undergauge, and cooperate with the hole enlargement chimb of neighboring, telescoping tube upper end, be connected with the elastic tube that connects suspension body steel cylinder inner cavity chamber between telescoping tube upper port and suspension body steel cylinder upper port, the lower end tube wall of lower flange is provided with the screw thread that is connected with outer tube.
Such scheme also comprises: be provided with seal washer on the involutory surface of suspension body steel cylinder and upper flange.Described suspension body steel cylinder is structure as a whole, or the middle part has the combining structure of connecting tube.
The present invention is connected with telescoping tube by the elastic tube of setting up in the suspension body steel cylinder, can well solve because of the flexible problem of telescoping tube expanded by heating, thereby thoroughly solve the potential safety hazard that existing welding fixed mode exists.Its overall construction design novelty, easy to install and use stable, reduce cost of winning, guaranteed the safe operation of thermal recovery technology.
Description of drawings
Accompanying drawing is a kind of structural representation of exemplary embodiments.
The specific embodiment:
Embodiment 1: with reference to accompanying drawing, be connected and fixed by bolt 7 and nut 6 between upper flange 9 and the lower flange 4.The interior suspension body steel cylinder 5 that is inserted in integrative-structure by force of lower flange 5, suspension body steel cylinder 5 tops and upper flange 9 involutory surfaces are provided with metal packing washer 8, increase that it is high pressure resistant, the sealing under the hot conditions.The lower end of suspension body steel cylinder 5 cooperates with the convex edge and the chimb overlap joint of telescoping tube 1 upper end, between telescoping tube 1 upper port and suspension body steel cylinder 5 upper port, be connected with the elastic tube 3 that connects suspension body steel cylinder inner cavity chamber, to guarantee that telescoping tube 1 discharges by the elastic tube that is located at suspension body steel cylinder 5 inner chambers behind expanded by heating, solved in the prior art to expand to the potential safety hazard that wellhead assembly brought because of telescoping tube.Bottom at lower flange 4 is provided with internal thread, so that be connected with down-hole outer tube 2.
Embodiment 2: on the basis of embodiment 1, only the suspension body steel cylinder is designed to the combining structure that the middle part has connecting tube.
The alleged telescoping tube of the present invention also claims inner sleeve, and lower flange also claims housing.
Claims (3)
1, a kind of elastic tube-type thermal production casing head, it is characterized in that: dock in upper flange after in lower flange, being inserted in the suspension body steel cylinder, suspension body steel cylinder bottom has the convex edge of undergauge, and cooperate with the hole enlargement chimb of neighboring, telescoping tube upper end, be connected with the elastic tube that connects suspension body steel cylinder inner cavity chamber between telescoping tube upper port and suspension body steel cylinder upper port, the lower end tube wall of lower flange is provided with the screw thread that is connected with outer tube.
2, elastic tube-type thermal production casing head according to claim 1 is characterized in that: be provided with seal washer on the involutory surface of suspension body steel cylinder and upper flange.
3, elastic tube-type thermal production casing head according to claim 1 and 2 is characterized in that: described suspension body steel cylinder integrative-structure, or the middle part has the combining structure of connecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100171921A CN101333917A (en) | 2008-07-03 | 2008-07-03 | Elastic tube-type thermal production casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100171921A CN101333917A (en) | 2008-07-03 | 2008-07-03 | Elastic tube-type thermal production casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101333917A true CN101333917A (en) | 2008-12-31 |
Family
ID=40196754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100171921A Pending CN101333917A (en) | 2008-07-03 | 2008-07-03 | Elastic tube-type thermal production casing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101333917A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2486054A (en) * | 2010-11-30 | 2012-06-06 | Vetco Gray Inc | Axially extendable/compressible casing segment |
| US8387707B2 (en) | 2008-12-11 | 2013-03-05 | Vetco Gray Inc. | Bellows type adjustable casing |
| CN104179471A (en) * | 2013-05-22 | 2014-12-03 | 西安海枫机电科技有限公司 | Flexible leak-free supercharged wellhead device |
| CN105587282A (en) * | 2016-01-28 | 2016-05-18 | 太仓市高泰机械有限公司 | Casing head for thermal recovery of thick oil |
| CN112983333A (en) * | 2021-04-25 | 2021-06-18 | 东营华辰石油装备有限公司 | Casing hanging type thermal recovery casing head |
-
2008
- 2008-07-03 CN CNA2008100171921A patent/CN101333917A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8387707B2 (en) | 2008-12-11 | 2013-03-05 | Vetco Gray Inc. | Bellows type adjustable casing |
| US8783362B2 (en) | 2008-12-11 | 2014-07-22 | Vetco Gray Inc. | Bellows type adjustable casing |
| GB2486054A (en) * | 2010-11-30 | 2012-06-06 | Vetco Gray Inc | Axially extendable/compressible casing segment |
| GB2486054B (en) * | 2010-11-30 | 2018-02-21 | Vetco Gray Inc | Bellows type adjustable casing |
| CN104179471A (en) * | 2013-05-22 | 2014-12-03 | 西安海枫机电科技有限公司 | Flexible leak-free supercharged wellhead device |
| CN105587282A (en) * | 2016-01-28 | 2016-05-18 | 太仓市高泰机械有限公司 | Casing head for thermal recovery of thick oil |
| CN112983333A (en) * | 2021-04-25 | 2021-06-18 | 东营华辰石油装备有限公司 | Casing hanging type thermal recovery casing head |
| CN112983333B (en) * | 2021-04-25 | 2021-08-03 | 东营华辰石油装备有限公司 | Casing hanging type thermal recovery casing head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081231 |