CN203531874U - Thermal expansion compensator - Google Patents
Thermal expansion compensator Download PDFInfo
- Publication number
- CN203531874U CN203531874U CN201320727235.1U CN201320727235U CN203531874U CN 203531874 U CN203531874 U CN 203531874U CN 201320727235 U CN201320727235 U CN 201320727235U CN 203531874 U CN203531874 U CN 203531874U
- Authority
- CN
- China
- Prior art keywords
- outer tube
- thermal expansion
- inner central
- central tube
- gland
- 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
- 210000004907 gland Anatomy 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 4
- 238000010793 Steam injection (oil industry) Methods 0.000 abstract description 15
- 230000000630 rising effect Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 6
- 238000000605 extraction Methods 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a thermal expansion compensator. The thermal expansion compensator can better control thermal expansion (warming) or shortening (cooling) of a steam injection tubular column caused by variation of the temperature with the rising of the temperature in a thick oil extraction steam injection process, and can effectively control well kick and blowout phenomena. The thermal expansion compensator comprises an outer tube, wherein one end of the outer tube is connected with an adapter connector, and a casing joint is arranged at the other end of the outer tube and connected with a sealing box and a gland; an inner central tube is arranged inside the outer tube, one end of the inner central tube is connected with a tubing joint, the outer surface of the other end of the inner central tube is sleeved with a sealing element, and the end surface is limited by a bearing ring; and the sealing element is sealed in the sealing box, and the tightness between the sealing element and the sealing box is adjusted by the gland.
Description
Technical field
The utility model relates to oil field operation field, the ring-like space of viscous crude perforated interval, and heat insulation layer steam injection, with the matching used a kind of downhole tool of thermosensitive metal expanding packer, a kind of expansion loop.
Technical background
At present, because of some oil wells crude oil thicker, need by steam injection ability high-efficiency mining, and in the process of steam injection, along with the continuous rising of steam injecting temperature, the steam injection string phenomenon of can expanding with heat and contract with cold along with the variation of temperature, easily be pulled off or squeeze curved, thereby cause well kick or blowout phenomenon, work progress is abnormally dangerous, and the safety of constructor and equipment cannot guarantee.
Utility model content
In order to solve the problem in background technology, the utility model provides a kind of expansion loop, this expansion loop is in thickened oil recovery steam injection technology, rising along with temperature, the heat expansion (intensification) of the steam injection string that can control preferably the variation of Yin Wendu and cause or shortening (cooling), can control well kick and blowout phenomenon effectively, guarantees the safety of constructor and equipment, realize safety work, environmental protection operation.
The technical solution of the utility model is: this expansion loop comprises outer tube, one end of outer tube is connected with variable buckle joint, the other end is connected to casing coupling, casing coupling is connected with seal box and gland, and there is inner central tube the inside of outer tube, a termination tubing coupling of inner central tube, potted component is enclosed within on other end external surface, end face is come spacing by load-bearing ring, and potted component by packing in seal box, by gland, adjust the tightness between potted component.
The utlity model has following beneficial effect: interior latus rectum is 62mm, maximum operating temperature reaches 350 ℃, maximum working pressure (MWP) reaches 15Mpa, maximal dilation is apart from reaching 4000mm, guaranteed steam injection string with the rising of temperature heat expansion, with the reduction of temperature, shorten, thereby guaranteed that steam injection string can not be pulled off and squeeze curved, guarantee safe construction, realize environmental protection operation.
Accompanying drawing explanation
Accompanying drawing is half sectional view of the present utility model:
In figure: 1, outer tube 2, casing coupling 3, inner central tube 4, tubing coupling
5, potted component 6, load-bearing ring 7, seal box 8, gland 9, variable buckle joint
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail: as shown in the drawing, this expansion loop, comprise outer tube 1, one end of outer tube 1 and the 9 use screwed connections of variable buckle joint, the other end of outer tube 1 is connected with casing coupling 2, and with screw thread, be connected between the other end of casing coupling 2 and seal box 7 and gland 8, there is inner central tube 3 inside of outer tube 1, one termination tubing coupling 4 of inner central tube 3, potted component 5 is enclosed within on the other end external surface of inner central tube 3, and load-bearing ring 6 has limited the position of potted component 5, be stuck in the other end of inner central tube 3, and potted component 5 by packing in seal box 7, by gland 8, adjust the tightness between potted component.During actual use, by oil pipe, connect variable buckle joint 9 interior buttons, be lowered into precalculated position in well, now the inner central tube 3 of expansion loop is because of the effect of gravity, the lower end of outer tube 1 is stretched out, when injecting the rising of vapours temperature, the effect of steam injection string Yin Wendu and extending, now, temperature-sensitive inflatable packer below expansion loop is progressively setting, limited inner central tube 3 and tubing coupling 4 moves down, the steam injection string extending promotes variable buckle joint 9 and outer tube 1, move down simultaneously, and potted component 5 packings the annular space between outer tube 1 and inner central tube 3, guarantee that steam injecting temperature can not leak, now, between variable buckle joint 9 and tubing coupling 4, relative displacement is shortened, thereby effectively controlled the variation that steam injection string can Yin Wendu and broken or squeeze curved, well kick and blowout phenomenon have effectively been controlled, realized the object of high-efficiency mining viscous crude, stop after steam injection, steam injection string shrinks with the reduction of temperature, drive variable buckle joint 9 and the outer tube 1 of expansion loop to move up, now, between variable buckle joint 9 and tubing coupling 4, relative displacement is extended, keep in the center.
Claims (1)
1. an expansion loop, it is characterized in that: one end of outer tube is connected with variable buckle joint, the other end is connected to casing coupling, casing coupling is connected with seal box and gland, and there is inner central tube the inside of outer tube, a termination tubing coupling of inner central tube, potted component is enclosed within on the other end external surface of inner central tube, end face is come spacing by load-bearing ring, and potted component by packing in seal box, by gland, adjust the tightness between potted component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727235.1U CN203531874U (en) | 2013-11-11 | 2013-11-11 | Thermal expansion compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727235.1U CN203531874U (en) | 2013-11-11 | 2013-11-11 | Thermal expansion compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531874U true CN203531874U (en) | 2014-04-09 |
Family
ID=50418096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320727235.1U Expired - Fee Related CN203531874U (en) | 2013-11-11 | 2013-11-11 | Thermal expansion compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203531874U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632162A (en) * | 2013-11-11 | 2015-05-20 | 盐城市华谊石油机械有限公司 | Thermal expansion compensator |
| CN106223868A (en) * | 2016-08-26 | 2016-12-14 | 新疆华隆油田科技股份有限公司 | Thermal production well steam injection string telescopic compensator |
| CN112240187A (en) * | 2020-08-25 | 2021-01-19 | 克拉玛依红山油田有限责任公司 | Sand washing, blockage removing and steam injecting tool |
-
2013
- 2013-11-11 CN CN201320727235.1U patent/CN203531874U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632162A (en) * | 2013-11-11 | 2015-05-20 | 盐城市华谊石油机械有限公司 | Thermal expansion compensator |
| CN106223868A (en) * | 2016-08-26 | 2016-12-14 | 新疆华隆油田科技股份有限公司 | Thermal production well steam injection string telescopic compensator |
| CN112240187A (en) * | 2020-08-25 | 2021-01-19 | 克拉玛依红山油田有限责任公司 | Sand washing, blockage removing and steam injecting tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205605160U (en) | Broken tail pipe blanking plug | |
| CN103696728B (en) | A kind of twin-stage self sealed thermal packer | |
| CN203531874U (en) | Thermal expansion compensator | |
| CN104213888B (en) | A kind of thick oil thermal extraction down-hole steam injection string | |
| CN203347736U (en) | Water-injection packer capable of being subjected to deblocking step by step | |
| CN201730583U (en) | Thermosensitive metal expanding packer | |
| CN104405355A (en) | Injection and production string of horizontal well | |
| CN203626712U (en) | Cold and hot double-acting packer | |
| CN104632162A (en) | Thermal expansion compensator | |
| CN204941345U (en) | A kind of radial well transfer with packing function | |
| CN105239952B (en) | Water injection well jet-preventing tool | |
| CN105178906B (en) | Combined action layered steam drive packer | |
| CN105715226A (en) | Blowout-preventing well plugging device located under wellhead | |
| CN108397155B (en) | Closable hydraulic opening sliding sleeve | |
| CN204082100U (en) | Large span long well section partition-type flow string | |
| CN104131800B (en) | Thermal production well annular space security control instrument | |
| CN203742575U (en) | Dual-seal oil pumping device for steam injection and oil extraction | |
| CN106761623A (en) | A kind of expansion loop | |
| CN202882873U (en) | Underground steam injection heat insulation compensation device | |
| CN201031647Y (en) | Stop production well head packer | |
| CN202381020U (en) | Polish rod grease injection sealing device | |
| CN203756092U (en) | Pressurized expansion mechanism for expansion hanger | |
| CN103806861B (en) | Cold and hot double-acting packer | |
| CN201953365U (en) | Underground steam injection, sealing, heat insulation and compensation integrated device | |
| CN205477513U (en) | Steam injection packer |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 |