CN203374240U - Constant-pressure blow-off and heat preservation device for oil well casing - Google Patents

Constant-pressure blow-off and heat preservation device for oil well casing Download PDF

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Publication number
CN203374240U
CN203374240U CN201320445344.4U CN201320445344U CN203374240U CN 203374240 U CN203374240 U CN 203374240U CN 201320445344 U CN201320445344 U CN 201320445344U CN 203374240 U CN203374240 U CN 203374240U
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China
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pressure
constant
muff
inner core
oil
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Expired - Fee Related
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CN201320445344.4U
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Chinese (zh)
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王志峰
王险峰
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Individual
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Abstract

The utility model provides a constant-pressure blow-off and heat preservation device for an oil well casing. The constant-pressure blow-off and heat preservation device for the oil well casing mainly comprises a packing box, a Christmas tree, an oil pipe, the casing, an anti-freezing constant-pressure gas relief valve and a single-well output pipeline, wherein the casing is connected with the bottom of the Christmas tree, the oil pipe, the anti-freezing constant-pressure gas relief valve, a gas exhaust hose, a gas exhaust T-joint and a pressure meter are arranged in the casing, the anti-freezing constant-pressure gas relief valve is connected with a port A of the gas exhaust T-joint through the gas exhaust hose, a port B of the gas exhaust T-joint is connected with the pressure meter, and the anti-freezing constant-pressure gas relief valve has the pressure adjustment function. According to tests of the constant-pressure blow-off and heat preservation device for the oil well casing, when the environmental temperature drops to minus 20DEG C, the temperature of the outer surface of the anti-freezing constant-pressure gas relief valve can be kept to be above 5DEG C, the internal temperature is higher than the external temperature, therefore, freezing blocking cannot happen, and the constant-pressure blow-off and heat preservation device for the oil well casing has the obvious advantages of being simple, easy to implement, low in cost and good in heat preservation effect.

Description

A kind of oil well casing level pressure air-bleed attemperator
[technical field]
The utility model relates to defroster, more specifically, relates to a kind of oil well casing level pressure air-bleed attemperator.
[background technology]
At present, in mechanical oil production model no matter be sucker rod pumping or electric submersible pumping, for preventing the impact of gas on oil well pump, all adopt in shaft bottom, carry out Oil-gas Separation respectively the method for extraction recovered the oil.Well liquid enters in oil extraction pump, from oil pipe top, discharges; Gas leans on self pressure discharge from the oil jacket annular space, and in the well head production tree, oil gas converges again, together enters the individual well export pipeline, when well liquid mixes with gas, in order to prevent that liquid from blowing back into pit shaft from the oil jacket annular space, ball-and-seat is installed on exhaust line usually.The gas produced from sleeve pipe significantly descends because swelling heat absorption can cause temperature, easily causes the valve discharging gas under certain pressure generation frozen block phenomenon be arranged on oil pipe, and existing valve discharging gas under certain pressure does not possess regulatory function, uses extremely inconvenient.
The conventional method that solves oil well casing valve discharging gas under certain pressure frozen block has: with the hot water pouring after heat insulating material parcel, electric tracing, hot water piping companion heat, frozen block, thaw etc.In use have problems: heat insulating material pack antifreezing effect is poor, and temperature lose heat insulation effect lower than negative ten degrees centigrade; Electric tracing running cost is high; Hot water piping accompanies hot method cost higher; Hot water sprinkling freezing process takies a large amount of manpowers, increases cost of labor.Therefore, casing tube constant pressure deflation valve frozen block problem is perplexing for a long time the winter oil well and is normally producing.
[utility model content]
In view of this, main purpose of the present utility model is to provide a kind of oil well casing level pressure air-bleed attemperator, can solve winter oil casing valve discharging gas under certain pressure frozen block problem, reduces or eliminates the casing tube constant pressure deflation valve frozen block impact that production brings to oil well in winter.
For achieving the above object, the technical scheme that the utility model is taked is: the utility model provides a kind of oil well casing level pressure air-bleed attemperator, mainly contain packing box, production tree, oil pipe, sleeve pipe, antifreezing type valve discharging gas under certain pressure and individual well export pipeline form, be connected with sleeve pipe in the production tree bottom, oil pipe is arranged in sleeve pipe, the antifreezing type valve discharging gas under certain pressure, air exhaust hose, venting threeway and pressure meter, the antifreezing type valve discharging gas under certain pressure is connected with the port A of venting threeway by air exhaust hose, the port B of venting threeway is connected with pressure meter, the antifreezing type valve discharging gas under certain pressure has pressure adjusting function.
Preferably, the antifreezing type valve discharging gas under certain pressure comprises Compress Spring, valve ball, muff and inner core, is provided with described valve ball and Compress Spring in inner core, and valve ball is on the sealing surface of sealed ball seat, the tight valve ball of one side pressure of Compress Spring, the other end of Compress Spring compresses the inner face of plug; The outlet of inner core gas is arranged on inner tube wall; Be fixed with muff on the outer wall of inner core, muff inlet and muff liquid outlet are arranged on described insulation jacket wall; 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 inner core air inlet port is by annular space UNICOM between the oil pipe in the middle part of pipeline and production tree and sleeve pipe; The outlet of inner core gas is by pipeline and individual well export pipeline UNICOM.
Preferably, air exhaust hose adopts the multi-layer braided sebific duct of steel wire.
Compared with prior art, the utlity model has following beneficial effect: distinctive structure of the present utility model makes this device can utilize the well liquid of oil well output to improve the sleeve pipe delivery temperature, oil well liquid-producing prevents the frozen block phenomenon, as long as just can prevent antifreezing type valve discharging gas under certain pressure frozen block.That air exhaust hose adopts is high pressure resistant, the multi-layer braided sebific duct of steel wire of oil resistant, the corrosion of anti-natural gas, and the gas fully taken into account in oil pipeline has corrosive situation, has extended the application life of this device.Test shows, when environment temperature is reduced to-20 degrees centigrade, the vent valve hull-skin temperature all can keep more than 5 degrees centigrade, and internal temperature, higher than external temperature, so frozen block can not occur, has obvious advantage simple, with low cost, high insulating effect.
[accompanying drawing explanation]
Fig. 1 shows the structural representation according to a kind of oil well casing level pressure air-bleed attemperator of the utility model embodiment.
Mark the following drawings mark on figure by reference to the accompanying drawings:
The 1-packing box, 2-production tree, 3-oil pipe, the 4-sleeve pipe, 5-inner core air inlet port, 6-Compress Spring, 7-muff liquid outlet, the outlet of 8-inner core gas, 9-muff inlet, the 10-valve ball, 11-muff, 12-inner core, 13-individual well export pipeline, 14-air exhaust hose, 15-pressure meter, 16-port B, 17-port A, the 18-threeway of exitting.
[specific embodiment]
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Fig. 1 shows the structural representation according to a kind of oil well casing level pressure air-bleed attemperator of the utility model embodiment; As shown in Figure 1, oil well casing level pressure air-bleed attemperator, mainly containing packing box 1, production tree 2, oil pipe 3, sleeve pipe 4, antifreezing type valve discharging gas under certain pressure and individual well export pipeline 13 forms, be connected with sleeve pipe 4 in production tree 2 bottoms, oil pipe 3 is arranged in sleeve pipe 4, antifreezing type valve discharging gas under certain pressure, air exhaust hose 14, venting threeway 18 and pressure meter 15, the antifreezing type valve discharging gas under certain pressure is connected with the port A17 of venting threeway 18 by air exhaust hose 14, the port B16 of venting threeway 18 is connected with pressure meter 15, and the antifreezing type valve discharging gas under certain pressure has pressure adjusting function.
The antifreezing type valve discharging gas under certain pressure comprises Compress Spring 6, valve ball 10, muff 11 and inner core 12, be provided with described valve ball 10 and Compress Spring 6 in inner core 12, valve ball 10 is on the sealing surface of sealed ball seat, the tight valve ball 10 of one side pressure of Compress Spring 6, the other end of Compress Spring 6 compresses the inner face of plug; Inner core gas outlet 8 is arranged on inner core 12 walls; Be fixed with muff 11 on the outer wall of inner core 12, muff inlet 9 and muff liquid outlet 7 are arranged on muff 11 walls; Muff inlet 9 is by pipeline and production tree 2 top oil pipe 3 UNICOMs; Muff liquid outlet 7 is by pipeline and individual well export pipeline 13 UNICOMs; Annular space UNICOM between the oil pipe of inner core air inlet port 5 by pipeline and production tree 2 middle parts and sleeve pipe; The outlet 8 of inner core gas is by pipeline and individual well export pipeline 13 UNICOMs.
Air exhaust hose 14 adopts the multi-layer braided sebific duct of steel wire.
The distinctive structure of embodiment of the present utility model makes this device can utilize the well liquid of oil well output to improve the sleeve pipe delivery temperature, prevents the frozen block phenomenon, as long as oil well liquid-producing just can prevent antifreezing type valve discharging gas under certain pressure frozen block.That air exhaust hose adopts is high pressure resistant, the multi-layer braided sebific duct of steel wire of oil resistant, the corrosion of anti-natural gas, and the gas fully taken into account in oil pipeline has corrosive situation, has extended the application life of this device.Test shows, when environment temperature is reduced to-20 degrees centigrade, the vent valve hull-skin temperature all can keep more than 5 degrees centigrade, and internal temperature, higher than external temperature, so frozen block can not occur, has obvious advantage simple, with low cost, high insulating effect.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (3)

1. an oil well casing level pressure air-bleed attemperator, mainly contain packing box (1), production tree (2), oil pipe (3), sleeve pipe (4), antifreezing type valve discharging gas under certain pressure and individual well export pipeline (13) form, be connected with sleeve pipe (4) in production tree (2) bottom, oil pipe (3) is arranged in sleeve pipe (4), it is characterized in that, described antifreezing type valve discharging gas under certain pressure, air exhaust hose (14), venting threeway (18) and pressure meter (15), described antifreezing type valve discharging gas under certain pressure is connected with the port A (17) of venting threeway (18) by air exhaust hose (14), the port B (16) of venting threeway (18) is connected with pressure meter (15), described antifreezing type valve discharging gas under certain pressure has pressure adjusting function.
2. oil well casing level pressure air-bleed attemperator according to claim 1, it is characterized in that, described antifreezing type valve discharging gas under certain pressure comprises Compress Spring (6), valve ball (10), muff (11) and inner core (12), be provided with described valve ball (10) and described Compress Spring (6) in described inner core (12), valve ball (10) is on the sealing surface of sealed ball seat, the tight valve ball of one side pressure (10) of described Compress Spring (6), the other end of described Compress Spring (6) compresses the inner face of plug; Inner core gas outlet (8) is arranged on described inner core (12) wall; Be fixed with described muff (11) on the outer wall of described inner core (12), muff inlet (9) and muff liquid outlet (7) are arranged on described muff (11) wall; Described muff inlet (9) is by pipeline and described production tree (2) top oil pipe (3) UNICOM; Described 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 the oil pipe in the middle part of pipeline and production tree (2) and sleeve pipe; Described inner core gas outlet (8) is by pipeline and individual well export pipeline (13) UNICOM.
3. according to the described oil well casing level pressure air-bleed of claim 1 or 2 attemperator, it is characterized in that, described air exhaust hose (14) adopts the multi-layer braided sebific duct of steel wire.
CN201320445344.4U 2013-07-25 2013-07-25 Constant-pressure blow-off and heat preservation device for oil well casing Expired - Fee Related CN203374240U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320445344.4U CN203374240U (en) 2013-07-25 2013-07-25 Constant-pressure blow-off and heat preservation device for oil well casing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320445344.4U CN203374240U (en) 2013-07-25 2013-07-25 Constant-pressure blow-off and heat preservation device for oil well casing

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108612644A (en) * 2016-12-12 2018-10-02 中国石油天然气股份有限公司 The device of pressurized fluid in casing of oil-pumping well

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108612644A (en) * 2016-12-12 2018-10-02 中国石油天然气股份有限公司 The device of pressurized fluid in casing of oil-pumping well
CN108612644B (en) * 2016-12-12 2019-10-11 中国石油天然气股份有限公司 The device of pressurized fluid in casing of oil-pumping well

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140101

Termination date: 20140725

EXPY Termination of patent right or utility model