CN201851060U - Constant pressure air-release heat-insulation device for oil well casing - Google Patents
Constant pressure air-release heat-insulation device for oil well casing Download PDFInfo
- Publication number
- CN201851060U CN201851060U CN2010206154532U CN201020615453U CN201851060U CN 201851060 U CN201851060 U CN 201851060U CN 2010206154532 U CN2010206154532 U CN 2010206154532U CN 201020615453 U CN201020615453 U CN 201020615453U CN 201851060 U CN201851060 U CN 201851060U
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- Prior art keywords
- inner core
- pipeline
- muff
- oil
- heat
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- 239000003129 oil well Substances 0.000 title claims abstract description 21
- 238000009413 insulation Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims description 15
- 238000013022 venting Methods 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 3
- 238000007710 freezing Methods 0.000 abstract description 3
- 241000191291 Abies alba Species 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 32
- 239000003921 oil Substances 0.000 description 29
- 238000000605 extraction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The constant pressure air-releasing heat-insulating device for oil well casing is used for constant pressure air-releasing heat-insulating of oil well casing. Is characterized in that: a sealing ball seat is fixed at the air outlet end of the inner cylinder, and a sealing steel ball and a compression spring are arranged in the inner cylinder; an inner cylinder air outlet is arranged on the inner cylinder wall; the outer wall of the inner cylinder is fixed with a heat-insulating sleeve, and the wall of the heat-insulating sleeve is provided with a heat-insulating sleeve liquid inlet and a heat-insulating sleeve liquid outlet; the liquid inlet of the heat-insulating sleeve is communicated with an oil pipe at the upper part of the Christmas tree through a pipeline; the liquid outlet of the heat insulation sleeve is communicated with a single well output pipeline through a pipeline; the air inlet of the inner cylinder is communicated with an annular space between the oil pipe in the middle of the Christmas tree and the sleeve through a pipeline; the inner cylinder gas outlet is communicated with a single well output pipeline through a pipeline. The effect is as follows: the problem of freezing and blocking of the wellhead casing constant pressure air release valve in the oil and gas production process in winter can be solved, and the original functions of constant pressure, air release and one-way flow of the casing constant pressure air release valve are not influenced.
Description
Technical field
The utility model relates to oil exploitation well head oil production equipment technical field, and particularly a kind of oil well attemperator is a kind of sleeve pipe level pressure venting attemperator.
Background technology
At present, in the mechanical oil production model no matter be sucker rod pumping or electric submersible pumping, for preventing the influence of gas to oil well pump, all adopt carry out in the shaft bottom Oil-gas Separation respectively the method for extraction recover the oil.Well liquid enters in the oil extraction pump, discharges from oil pipe top; Gas leans on self pressure discharge from the oil jacket annular space, and oil gas converges again in the well head production tree, together enters the individual well export pipeline.When mixing with gas, well liquid, ball-and-seat is installed on exhaust line usually in order to prevent that liquid from blowing back into pit shaft from the oil jacket annular space.
Because geothermal gradient is generally about 6 ℃/100m, the extraction of well liquid all has certain temperature behind ground, and the well liquid that particularly originates from deep-well arrives temperature behind the well head about 20 ℃ to 60 ℃.So the well liquid of oil well oil conduit output can not freeze stifled phenomenon; And from the gas of oil jacket annular space output because the reason of swelling heat absorption descends temperature, cause oil jacket annular space valve discharging gas under certain pressure to freeze stifled phenomenon easily, sealed steel ball and ball seat (ball-and-seat) are freezed together.When particularly having condensate to separate out, when casing pressure is unstable or casing pressure is low when temporarily not exitting, it is stifled more to have increased the weight of freezing of single current vent valve.About-20 ℃, it is stifled to cause ball-and-seat (vent valve) often to freeze, and can not in time exit, and causes oil well pump to be subjected to gases affect usually for some oil field winter temperatures, even the situation that gas lock can not recover the oil takes place, and brings very big influence for oil field crude oil production in winter.
Solving the oil well casing valve discharging gas under certain pressure freezes stifled conventional method and has: with heat insulating material parcel, electric tracing, hot water piping companion heat, freeze hot water after stifled and drench and thaw etc.In use have problems: heat insulating material pack antifreezing effect is poor, and temperature is lower than-10 ℃ and promptly loses heat insulation effect; Electric tracing running cost height; Hot water piping accompanies hot method cost higher; Hot water sprinkling freezing process takies a large amount of manpowers, increases cost of labor.So the sleeve pipe valve discharging gas under certain pressure freezes stifled problem and is perplexing oil well ordinary production in winter for a long time.
The utility model content
The purpose of this utility model is: a kind of oil well casing level pressure venting attemperator is provided, solves winter oil casing valve discharging gas under certain pressure and freeze stifled problem, reduce or eliminate winter sleeve pipe valve discharging gas under certain pressure and freeze the stifled influence that production brings to oil well.
The technical solution adopted in the utility model is: oil well casing level pressure venting attemperator, mainly form by packing box, production tree, oil pipe, sleeve pipe, insulation valve discharging gas under certain pressure and individual well export pipeline, be connected with sleeve pipe in well recovery tree bottom, oil pipe is arranged in sleeve pipe, it is characterized in that: the insulation valve discharging gas under certain pressure comprises compression spring, sealed steel ball, muff and inner core, export an end at the inner core gas of inner core and be fixed with sealed ball seat, the other end of inner core is fixed with plug; Sealed steel ball and compression spring are arranged in inner core, and sealed steel ball is on the sealing surface of sealed ball seat, and an end of compression spring compresses sealed steel ball, and the other end of compression spring compresses the inner face of plug; The outlet of inner core gas is arranged on inner tube wall; On the outer wall of inner core, be fixed with muff, form airtight annular space between muff and the inner core, on the insulation jacket wall, muff inlet and muff liquid outlet are arranged.The muff inlet is by pipeline and production tree top oil pipe UNICOM; The muff liquid outlet is by pipeline and individual well export pipeline UNICOM.The higher liquid of the temperature of down-hole extraction can be heated for the gas of inner core during by muff.The inner core air inlet port is by annular space UNICOM between oil pipe in the middle part of pipeline and the production tree and the sleeve pipe; The outlet of inner core gas is by pipeline and individual well export pipeline UNICOM.
Install a muff additional at former sleeve pipe valve discharging gas under certain pressure body outer wall.Open an inlet on muff, inlet links to each other with oil well oil conduit output flow process; Open a liquid outlet on muff, liquid outlet links to each other with the individual well export pipeline.So just realize the oil-well self produced fluid to gas in the sleeve pipe valve discharging gas under certain pressure implement incessantly the insulation.
The beneficial effects of the utility model: the utility model oil well casing level pressure venting attemperator, can utilize the well liquid of oil well output to improve the temperature that sleeve pipe is got rid of gas, the well head sleeve pipe valve discharging gas under certain pressure that solves in the oil gas manufacturing process in winter freezes stifled problem, does not influence the original level pressure of sleeve pipe valve discharging gas under certain pressure, venting, one-way flow function simultaneously.Test shows, when environment temperature was reduced to-20 ℃, the vent valve hull-skin temperature all can remain on more than 5 ℃, and internal temperature is higher than external temperature, so can not freeze stifled.Has obvious advantage simple, with low cost, high insulating effect.
Description of drawings
Fig. 1 is the utility model oil well casing level pressure venting attemperator structural representation.
Among the figure, 1. packing box, 2. production tree, 3. oil pipe, 4. sleeve pipe, 5. inner core air inlet port, 6. compression spring, 7. muff liquid outlet, 8. inner core gas outlet, 9. muff inlet, 10. sealed steel ball, 11. muffs, 12. inner cores, 13. individual well export pipelines.
The specific embodiment
Embodiment 1: with an oil well casing level pressure venting attemperator is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model oil well casing level pressure venting attemperator mainly is made up of packing box 1, production tree 2, oil pipe 3, sleeve pipe 4, insulation valve discharging gas under certain pressure and individual well export pipeline 13.Set 2 bottoms at well recovery and be connected with sleeve pipe 4, oil pipe 3 is arranged in sleeve pipe 4, at the top of oil pipe 3 packing box 1 is arranged, in oil pipe 3 polished rod is arranged, polished rod passes packing box 1.
The insulation valve discharging gas under certain pressure is made up of compression spring 6, sealed steel ball 10, columniform muff 11, cylindrical inner core 12, sealed ball seat and plug.Exporting 8 one end internal fixation at the inner core gas of inner core 12 has a ring packing ball seat, and the other end of inner core 12 is fixed with an external screw thread plug; A sealed steel ball 10 and a compression spring 6 are arranged in inner core 12, and sealed steel ball 10 is on the sealing surface of sealed ball seat, and an end of compression spring 6 compresses sealed steel ball 10, and the other end of compression spring 6 compresses the inner face of plug, forms an one way valve like this.Inner core gas outlet 8 is arranged on inner core 12 walls.
Be fixed with a muff 11 on the outer wall of inner core 12, muff 11 two ends are welded on the outer wall of inner core 12.Form airtight annular space between muff 11 and the inner core 12.A muff inlet 9 and a muff liquid outlet 7 are arranged on muff 11 walls.Muff inlet 9 is by pipeline and production tree 2 top oil pipes 3 UNICOMs; Muff liquid outlet 7 is by pipeline and individual well export pipeline 13 UNICOMs.Inner core air inlet port 5 by pipeline and production tree 2 middle parts oil pipe and sleeve pipe between annular space UNICOM.The outlet 8 of inner core gas is by pipeline and individual well export pipeline 13 UNICOMs.
Claims (1)
1. oil well casing level pressure venting attemperator, mainly form by packing box (1), production tree (2), oil pipe (3), sleeve pipe (4), insulation valve discharging gas under certain pressure and individual well export pipeline (13), be connected with sleeve pipe (4) in well recovery tree (2) bottom, oil pipe (3) is arranged in sleeve pipe (4), it is characterized in that: the insulation valve discharging gas under certain pressure comprises compression spring (6), sealed steel ball (10), muff (11) and inner core (12), inner core gas outlet (8) one ends at inner core (12) are fixed with sealed ball seat, and the other end of inner core (12) is fixed with plug; Sealed steel ball (10) and compression spring (6) are arranged in inner core (12), and sealed steel ball (10) is on the sealing surface of sealed ball seat, and an end of compression spring (6) compresses sealed steel ball (10), and the other end of compression spring (6) compresses the inner face of plug; Inner core gas outlet (8) is arranged on inner core (12) wall; On the outer wall of inner core (12), be fixed with muff (11), form airtight annular space between muff (11) and the inner core (12), muff inlet (9) and muff liquid outlet (7) are arranged on muff (11) wall; Muff inlet (9) is by pipeline and production tree (2) top oil pipe (3) UNICOM; Muff liquid outlet (7) is by pipeline and individual well export pipeline (13) UNICOM; Inner core air inlet port (5) is by annular space UNICOM between oil pipe in the middle part of pipeline and the production tree (2) and the sleeve pipe; Inner core gas outlet (8) is by pipeline and individual well export pipeline (13) UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206154532U CN201851060U (en) | 2010-11-18 | 2010-11-18 | Constant pressure air-release heat-insulation device for oil well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206154532U CN201851060U (en) | 2010-11-18 | 2010-11-18 | Constant pressure air-release heat-insulation device for oil well casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851060U true CN201851060U (en) | 2011-06-01 |
Family
ID=44093459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206154532U Expired - Lifetime CN201851060U (en) | 2010-11-18 | 2010-11-18 | Constant pressure air-release heat-insulation device for oil well casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851060U (en) |
-
2010
- 2010-11-18 CN CN2010206154532U patent/CN201851060U/en not_active Expired - Lifetime
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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: 20110601 |
|
| CX01 | Expiry of patent term |