CN203769705U - Polished rod sealing device for thermal recovery - Google Patents
Polished rod sealing device for thermal recovery Download PDFInfo
- Publication number
- CN203769705U CN203769705U CN201420179976.5U CN201420179976U CN203769705U CN 203769705 U CN203769705 U CN 203769705U CN 201420179976 U CN201420179976 U CN 201420179976U CN 203769705 U CN203769705 U CN 203769705U
- Authority
- CN
- China
- Prior art keywords
- sealing
- polished rod
- seal
- box
- valve
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 238000011084 recovery Methods 0.000 title claims abstract description 9
- 238000010793 Steam injection (oil industry) Methods 0.000 abstract description 24
- 239000003129 oil well Substances 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
A polished rod sealing device for thermal recovery comprises a polished rod, a pressing cap, a sealing element, a sealing box, a sealing base and a sealing valve. The polished rod penetrates through the sealing box. The sealing element is installed in the sealing box. The pressing cap is connected with the sealing box in a threaded mode. An annular sleeve in the pressing cap presses the sealing element. The sealing base is arranged in the lower portion of the sealing box in a press fitting mode so that the contact face of the sealing base and the sealing box can keep sealed. The lower portion of the polished rod is connected with the upper portion of the sealing valve. The upper outer portion of the sealing valve is matched with the inner portion of the sealing base for sealing. The sealing base and the sealing valve can be tightly matched and keep at the sealed state after the polished rod is lifted. The sealing base and the sealing valve are tightly matched and keep sealed when high temperature steam is injected; the sealing base and the sealing valve are both made of metal materials, are high in temperature resistance and can meet the requirement for steam injection, and therefore steam can be injected in a sealed mode after the polished rod is put into a steam injection thermal recovery well, the construction procedures can be reduced, pumping production can be instantly conducted after steam injection is finished, the steam injection effect is greatly improved, the oil well yield is increased, and obvious economic benefits are achieved.
Description
technical field:
The utility model is the wellhead equipment that oil exploitation is used, and is the well mouth sealing device that heavy oil wells heat extraction by steam injection is used, specifically a kind of thermal recovery polished rod sealer.
Background technology
When pumpingh well is pumped with sucker rod in order to prevent blowout, to on the flow tee of wellhead assembly, sealer be installed, bar top through sealer connects oil pumper, bottom connecting with pumping rod, in order to ensure and sealer fitted seal, bar Surface Machining through sealer is very smooth, so be called polished rod, its sealer is also just called polished rod sealer.Existing polished rod sealer kind is more, but all exists certain defect, and during due to steam injection, temperature, up to more than 360 degree, ensures long-time sealing again, and current used nonmetals all do not reach this requirement.So, polished rod sealer is not generally installed when steam injection at present, only have and adopt the way of multi-step to carry out steam injection construction, specifically first do not play polished rod, well head can seal steam injection, etc. the steam injection rear closing well step-down of having constructed, after well head pressure disappears, open wide well head again and be lowered to polished rod and polished rod sealer is installed, now wellhead temperature is not high, and normal optical rod sealer just can use.This construction method operation is many, and the cycle is long, and opening well and making production, affects steam injection efficiency in time, reduces oil well output.
Summary of the invention
The purpose of this utility model is a kind of thermal recovery polished rod sealer of design, can be high temperature resistant, and make its steam injection thermal recovery well can be lowered to airtight steam injection after polished rod, reduce working procedure, after steam injection finishes, can turn immediately pumping and produce, improve steam injection efficiency, increase oil well output.
The purpose of this utility model is achieved in that and comprises polished rod, pressure cap, seal, seal box, seal receptacle, seal valve, polished rod is through seal box, seal is installed in seal box, pressure cap is threaded with seal box, annular cover in pressure cap is pushed down seal, and seal box press-fits seal receptacle in bottom, makes the contact surface of seal receptacle and seal box keep sealing, the bottom of polished rod connects top, the upper outside of seal valve and the inside fitted seal of seal receptacle of seal valve.
The beneficial effects of the utility model are: above carry and can make seal receptacle, the seal valve maintenance sealing state that closely cooperates after polished rod, when the utility model note high-temperature steam, closely cooperate and keep sealing by seal receptacle, seal valve, seal receptacle, seal valve are all that metal material is made, heatproof is high, can meet the requirement of steam injection, make its steam injection thermal recovery well can be lowered to airtight steam injection after polished rod, can reduce working procedure, after steam injection finishes, can turn immediately pumping produces, greatly improve steam injection efficiency, increase oil well output, there is significant economic benefit.
Brief description of the drawings
Fig. 1 is the assembling drawing of the utility model embodiment.
Specific embodiment
Below in conjunction with Fig. 1, embodiment of the present utility model is described.
As seen from the figure, embodiment of the present utility model comprises polished rod 1, pressure cap 2, seal 3, seal box 4, seal receptacle 5, seal valve 6, polished rod 1 is through seal box 4, the interior installation seal 3 of seal box 4, pressure cap 2 is threaded with seal box 4, annular cover in pressure cap 2 is pushed down seal 3, seal box press-fits seal receptacle 5 in 4 bottoms, the steel processing that seal receptacle 5 use hardness are lower, and between seal box 4, be interference fit, fitting face can seal, make seal receptacle 5 and the contact surface of seal box 4 keep sealing, the bottom of polished rod 1 connects the top of seal valve 6, the upper outside of seal valve 6 and the inside fitted seal of seal receptacle 5.
When steam injection, seal 3 is not put into seal box 4, above carries polished rod 1, makes seal valve 6 be applied with enough pressure to seal receptacle 5, thereby makes its contact surface gapless keep sealing.All sealings position is all metal material, can be high temperature resistant, can note high-temperature steam.After steam injection finishes, well head does not have steam, and wellhead temperature declines, and packs seal 3 in seal box 4 into, and screwing pressure cap 2 just can opening well and making production.Therefore, the utility model can turn and take out immediately, can improve steam injection efficiency.
When steam injection, remain Fig. 1 state, turn while taking out polished rod 1 and transfer and touch pump and open and take out.
Claims (1)
1. a thermal recovery polished rod sealer, comprise polished rod (1), pressure cap (2), seal (3), seal box (4), seal receptacle (5), seal valve (6), polished rod (1) is through seal box (4), seal (3) is installed in seal box (4), pressure cap (2) is threaded with seal box (4), annular cover in pressure cap (2) is pushed down seal (3), it is characterized in that: seal box (4) press-fits seal receptacle (5) in bottom, make seal receptacle (5) and the contact surface of seal box (4) keep sealing, the bottom of polished rod (1) connects the top of seal valve (6), the inside fitted seal of the upper outside of seal valve (6) and seal receptacle (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179976.5U CN203769705U (en) | 2014-04-15 | 2014-04-15 | Polished rod sealing device for thermal recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179976.5U CN203769705U (en) | 2014-04-15 | 2014-04-15 | Polished rod sealing device for thermal recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203769705U true CN203769705U (en) | 2014-08-13 |
Family
ID=51286906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179976.5U Expired - Lifetime CN203769705U (en) | 2014-04-15 | 2014-04-15 | Polished rod sealing device for thermal recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203769705U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499981A (en) * | 2014-11-26 | 2015-04-08 | 无锡世联丰禾石化装备科技有限公司 | Heavy oil thermal recovery wellhead gas injection blowout preventer |
| CN105422036A (en) * | 2015-05-25 | 2016-03-23 | 易鲁川 | Sealing device for steam-injecting oil-pumping well |
| CN108590563A (en) * | 2018-04-08 | 2018-09-28 | 中国石油化工股份有限公司 | Screw pump well head steam injection sealing device and note adopt integrated optical rod seal apparatus |
-
2014
- 2014-04-15 CN CN201420179976.5U patent/CN203769705U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499981A (en) * | 2014-11-26 | 2015-04-08 | 无锡世联丰禾石化装备科技有限公司 | Heavy oil thermal recovery wellhead gas injection blowout preventer |
| CN105422036A (en) * | 2015-05-25 | 2016-03-23 | 易鲁川 | Sealing device for steam-injecting oil-pumping well |
| CN108590563A (en) * | 2018-04-08 | 2018-09-28 | 中国石油化工股份有限公司 | Screw pump well head steam injection sealing device and note adopt integrated optical rod seal apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |