CN203430487U - Device for recovering and enabling oil well casing gas to enter oil return pipeline with low casing pressure - Google Patents
Device for recovering and enabling oil well casing gas to enter oil return pipeline with low casing pressure Download PDFInfo
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- CN203430487U CN203430487U CN201320459084.6U CN201320459084U CN203430487U CN 203430487 U CN203430487 U CN 203430487U CN 201320459084 U CN201320459084 U CN 201320459084U CN 203430487 U CN203430487 U CN 203430487U
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- filter membrane
- return pipeline
- ball
- well casing
- oil return
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Abstract
The utility model relates to a device for recovering and enabling oil well casing gas to enter oil return pipeline with a low casing pressure. The device comprises a three-way clamp head (1), an emptying gate (2), an inlet control gate (3), a connecting pipeline (4), a compressor (5), a short joint (6), an outlet control valve (7), a gas storage pipe (8), a check valve, and a movable joint (10); the upper end of the three-way clamp head (1) is connected with one end of the connecting pipeline (4) through the inlet control gate (3), the other end of the connecting pipeline (4) is connected with an input end of the compressor (5), and an output end of the compressor (5) is connected with one end of the gas storage pipe (8) through the movable joint (10) and the check valve in sequence. After the device for recovering and enabling oil well casing gas to enter the oil return pipeline with the low casing pressure is adopted, under the condition that the gas recovery pipeline of the oil well casing (13) is not arranged on an oil well, the device can recover the gas of an oil well casing (13) into an oil return pipeline (11) under the condition that the pumping efficiency is not influenced, the gas is further recovered into a station, and the gas of the oil well casing (13) is prevented from emitting to the atmosphere to form the problems of environment pollution and resource waste.
Description
Technical field
The utility model relates to well casing gas in oil exploitation process and reclaims field, reclaims the device of well casing gas oil inlet and oil return pipeline in particular to a kind of low casing pressure.
Background technology
In oilfield development process, along with the decline of stratum energy, most oil wells lose blowing ability, and oil well production completes by mechanical oil recovery.Mechanical oil well is that deep well pump is lowered to desired depth by oil pipe column from oil well casing, deep well pump is sunk to below wellbore casing pasta, upper end and tubing head are by screwed connection, setting in Christmas tree casing big four center by tubing head, make deep well pump and oil pipe suspension in cased borehole, this mode forms two tubing string spaces of sealing mutually, an oil pipe column space, an oil sets annular space.During oil recovery, deep well pump is worked under power drive, and oil is adopted to ground from underground through oil pipe column, and oil stream is by producing oil return pipe linear flow that gate is connected to production station with production tree.In oil recovery manufacturing process, along with oil flow to deep well pump from oil reservoir, be accompanied by natural gas and separate from crude oil, rise to oil casing annular space, form casing gas.In oil machinery oil recovery process, casing gas has following impact to deep well pump; The first, when casing gas pressure is high, casing gas can be pressed into deep well pump, makes the standing valve of deep well pump produce gas lock, reduces deep well pump pump efficiency, reduces well oil output; The second, because oil field development is to the middle and later periods, stratum energy declines serious, and oil well casing atmospheric pressure is high, makes the crude stream in oil reservoir cause resistance to pit shaft, causes deep well pump fluid supply capacity not enough, affects oil production.In oil well actual production, for well casing gas, take two measures at present, the one, while bringing in and oil return pipeline build well casing gas recovery line simultaneously casing gas low pressure reclaimed and to be entered the station, this kind of mode cost is higher; The 2nd, do not build casing gas recovery line, can only take to open sleeve gate by casing gas discharged to atmosphere, casing gas during discharged to atmosphere, causes the wasting of resources, pollutes environment.
High for well casing gas cost recovery in prior art, discharged to atmosphere, can cause the problem of the wasting of resources, contaminated environment, effective solution is not yet proposed at present.
Utility model content
High for well casing gas cost recovery in correlation technique, discharged to atmosphere, can cause the problem of the wasting of resources, contaminated environment, effective solution is not yet proposed at present, for this reason, main purpose of the present utility model is to provide a kind of low casing pressure to reclaim the device of well casing gas oil inlet and oil return pipeline, to address the above problem.
To achieve these goals, according to an aspect of the present utility model, provide a kind of low casing pressure to reclaim the device of well casing gas oil inlet and oil return pipeline, described device comprises threeway hoop 1, emptying gate 2, import barrier gate 3, connecting line 4, compressor 5, short circuit head 6, discharge control valve 7, deposits tracheae 8, ball-and-seat, movable joint 10;
Described threeway hoop 1 upper end is connected with connecting line 4 one end by import barrier gate 3, and connecting line 4 other ends are connected with the input of compressor 5, the output of compressor 5 in turn by movable joint 10 and ball-and-seat with deposit tracheae 8 one end and be connected;
The described other end of depositing tracheae 8 is connected with oil return pipeline 11 with short circuit head 6 by discharge control valve 7 in turn;
The right-hand member of described threeway hoop 1 is connected with oil well casing 13 by wellhead casing pipe gate 12;
The left end of described threeway hoop 1 is connected with emptying gate 2.
Further, the device of described low casing pressure recovery well casing gas oil inlet and oil return pipeline also comprises filter membrane device; Described filter membrane device one end is connected with import barrier gate 3, and the other end is connected with connecting line 4.
Further, described filter membrane device comprises filter membrane protective cover 14, filter membrane 15, sealing ring 16, filter membrane chamber 17 filter membrane protective cover plugs 18, extremely stifled 19, Intranet 20, outer net 21;
Described filter membrane protective cover plug 18 is plugged in filter membrane protective cover 14 upper ends, and sealing ring 16 is plugged in filter membrane protective cover 14 lower ends, and filter membrane protective cover 14 is placed in filter membrane chamber 17, and extremely stifled 19 are connected with 17 upper ends, filter membrane chamber;
Described outer net 21 is placed in filter membrane protective cover 14 and upper end is connected with filter membrane protective cover plug 18, lower end is connected with the skin of sealing ring 16, and Intranet 20 is socketed in outer net 21 and upper end is connected with filter membrane protective cover plug 18, lower end is connected with the internal layer of sealing ring 16;
Described filter membrane 15 is placed between Intranet 20 and outer net 21 and upper end is connected with filter membrane protective cover plug 18, lower end is plugged in the U-shaped groove between sealing ring 16 internal layers and skin.
Further, the horizontal segment of described connecting line 4 is connected by movable elbow 22 with vertical section.
Further, described movable elbow 22 comprises ball 23, interior central siphon 24, shutoff pipe 25, the first ball alcove 37, the second ball alcove 26, outer shaft 27, ball pad 28;
Described interior central siphon 24 is socketed in the lower shoe centre bore of outer shaft 27, shutoff pipe 25 lower ends be plugged in interior central siphon 24 and outer shaft 27 between;
On described interior central siphon 24, be provided with the dividing plate 29 perpendicular to tube wall, between dividing plate 29 and shutoff pipe 25, be provided with the first ball alcove 37, between dividing plate 29 and outer shaft 27, be provided with the second ball alcove 26;
Between described the first ball alcove 37 and shutoff pipe 25, be provided with ball pad 28;
In described the first ball alcove 37 and the second ball alcove 26, be provided with ball 23;
Between the lower shoe centre bore of described outer shaft 27 and interior central siphon 24, be provided with the second sealing ring 38;
Described shutoff pipe 25 upper ends are connected with the horizontal segment of connecting line 4.
Further, described ball-and-seat comprises valve body 30, taper flashboard 31, spring 32, spring base 33; Described spring base 33 is connected with the lower port of valve body 30, and the tapering point that is placed in the taper flashboard 31 in valve body 30 is connected with valve body 30, and taper flashboard 31 is socketed with one end of spring 32 through spring base 33.
Further, described emptying gate 2 is also connected with test hoop 34.
Further, the horizontal segment of described connecting line 4 is provided with and supports 35.
Further, the right-hand member of described threeway hoop 1 is provided with steel ring slot 36.
Further, described in, depositing tracheae 8 arranges perpendicular to oil return pipeline 11.
Adopt the utility model, the in the situation that of the uneasy dress of oil well well casing gas recovery line, can guarantee not affect in the situation of oil well pump efficiency, well casing gas is reclaimed to oil inlet and oil return pipeline, and then recovery is entered the station, avoid well casing gas discharged to atmosphere, polluted the problem of environment and waste resource.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 reclaims the structural front view of the device of well casing gas oil inlet and oil return pipeline according to the low casing pressure of the utility model embodiment;
Fig. 2 is the partial enlarged drawing in the left side of Fig. 1;
Fig. 3 is the partial enlarged drawing on the right side of Fig. 1;
Fig. 4 reclaims the left view of the device of well casing gas oil inlet and oil return pipeline according to the low casing pressure of the utility model embodiment;
Fig. 5 is according to the sectional view of the movable elbow of the utility model embodiment;
Fig. 6 is according to the top view of the outer shaft of the utility model embodiment;
Fig. 7 is according to the sectional view of the filter membrane protective cover of the utility model embodiment;
Fig. 8 is the ball-and-seat sectional view according to the utility model embodiment;
Fig. 9 is the spring seat structure schematic diagram according to the utility model embodiment;
Figure 10 reclaims the schematic diagram of device of well casing gas oil inlet and oil return pipeline according to the low casing pressure of the utility model embodiment.
The specific embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Fig. 1 reclaims the structural front view of the device of well casing gas oil inlet and oil return pipeline according to the low casing pressure of the utility model embodiment; Fig. 3 reclaims the left view of the device of well casing gas oil inlet and oil return pipeline according to the low casing pressure of the utility model embodiment; Figure 10 reclaims the schematic diagram of device of well casing gas oil inlet and oil return pipeline according to the low casing pressure of the utility model embodiment; As shown in Fig. 1,2,8, this device can comprise: comprise threeway hoop 1, emptying gate 2, import barrier gate 3, connecting line 4, compressor 5, short circuit head 6, discharge control valve 7, deposit tracheae 8, ball-and-seat, movable joint 10;
Described threeway hoop 1 upper end is connected with connecting line 4 one end by import barrier gate 3, and connecting line 4 other ends are connected with the input of compressor 5, the output of compressor 5 in turn by movable joint 10 and ball-and-seat with deposit tracheae 8 one end and be connected;
The described other end of depositing tracheae 8 is connected with oil return pipeline 11 with short circuit head 6 by discharge control valve 7 in turn;
The right-hand member of described threeway hoop 1 is connected with oil well casing 13 by wellhead casing pipe gate 12;
The left end of described threeway hoop 1 is connected with emptying gate 2.
Adopt the utility model, can be by oil well casing 13 gas step-down power to approaching atmospheric pressure, the in the situation that of the uneasy dress of oil well well casing gas recovery line, can guarantee not affect in the situation of oil well pump efficiency, oil well casing 13 gas are reclaimed to oil inlet and oil return pipeline 11, and then reclaim and to enter the station, avoided oil well casing 13 gas discharged to atmosphere, pollute the problem of environment and waste resource.
According to above-described embodiment of the present utility model, the device that described low casing pressure reclaims well casing gas oil inlet and oil return pipeline also comprises filter membrane device; Described filter membrane device one end is connected with import barrier gate 3, and the other end is connected with connecting line 4.Filter membrane device is moisture for filter oil casing 13 gas, by threeway hoop 1, makes in water withdrawing oil casing 13, makes compressor 5 and connecting line round-the-clock normal operation of 24 hours 4 summers in winter.
As shown in Figure 7, at above-described embodiment of the present utility model, described filter membrane device comprises filter membrane protective cover 14, filter membrane 15, sealing ring 16, filter membrane chamber 17, filter membrane protective cover plug 18, extremely stifled 19, Intranet 20, outer net 21;
Described filter membrane device comprises filter membrane protective cover 14, filter membrane 15, sealing ring 16, filter membrane chamber 17, filter membrane protective cover plug 18, extremely stifled 19, Intranet 20, outer net 21;
Described filter membrane protective cover plug 18 is plugged in filter membrane protective cover 14 upper ends, and sealing ring 16 is plugged in filter membrane protective cover 14 lower ends, and filter membrane protective cover 14 is placed in filter membrane chamber 17, and extremely stifled 19 are connected with 17 upper ends, filter membrane chamber;
Described outer net 21 is placed in filter membrane protective cover 14 and upper end is connected with filter membrane protective cover plug 18, lower end is connected with the skin of sealing ring 16, and Intranet 20 is socketed in outer net 21 and upper end is connected with filter membrane protective cover plug 18, lower end is connected with the internal layer of sealing ring 16;
Described filter membrane 15 is placed between Intranet 20 and outer net 21 and upper end is connected with filter membrane protective cover plug 18, lower end is plugged in the U-shaped groove between sealing ring 16 internal layers and skin.
According to above-described embodiment of the present utility model, the horizontal segment of described connecting line 4 is connected by movable elbow 22 with vertical section.
As shown in Figure 5,6, at above-described embodiment of the present utility model, described movable elbow 22 comprises ball 23, interior central siphon 24, shutoff pipe 25, the first ball alcove 37, the second ball alcove 26, outer shaft 27, ball pad 28;
Described interior central siphon 24 is socketed in the lower shoe centre bore of outer shaft 27, shutoff pipe 25 lower ends be plugged in interior central siphon 24 and outer shaft 27 between;
On described interior central siphon 24, be provided with the dividing plate 29 perpendicular to tube wall, between dividing plate 29 and shutoff pipe 25, be provided with the first ball alcove 37, between dividing plate 29 and outer shaft 27, be provided with the second ball alcove 26;
Between described the first ball alcove 37 and shutoff pipe 25, be provided with ball pad 28;
In described the first ball alcove 37 and the second ball alcove 26, be provided with ball 23;
Between the lower shoe centre bore of described outer shaft 27 and interior central siphon 24, be provided with the second sealing ring 38;
Described shutoff pipe 25 upper ends are connected with the horizontal segment of connecting line 4.
As shown in Figure 8,9, according to above-described embodiment of the present utility model, described ball-and-seat comprises valve body 30, taper flashboard 31, spring 32, spring base 33; Described spring base 33 is connected with the lower port of valve body 30, and the tapering point that is placed in the taper flashboard 31 in valve body 30 is connected with valve body 30, and taper flashboard 31 is socketed with one end of spring 32 through spring base 33.
At above-described embodiment of the present utility model, described emptying gate 2 is also connected with test hoop 34.
According to above-described embodiment of utility model, the horizontal segment of described connecting line 4 is provided with and supports 35.
At above-described embodiment of the present utility model, the right-hand member of described threeway hoop 1 is provided with steel ring slot 36.
According to above-described embodiment of the present embodiment, described in deposit tracheae 8 and arrange perpendicular to oil return pipeline 11.
Adopt the utility model, during recovered oil casing 13 gas, first flow process is fallen to lead to, close emptying gate 2, open import barrier gate 3, discharge control valve 7, wellhead casing pipe gate 12; Start compressor 5, the well casing gas that oil well produces, by filter membrane 15, moisture the blocking in casing gas returned in oil well casing, realize pure gas by compressor 5 superchargings, back down ball-and-seat and enter oil return pipeline 11, with oil, flow to station, by the continuous work of compressor 5, reach and reduce casing gas pressure to approaching atmospheric pressure, with the same texts of outer wellhead bar casing tube gas, realize simultaneously and reclaim the object that well casing gas enters the station.
Adopt the utility model, first that compressor 5 is out of service while surveying oil well liquid level, close import barrier gate 3, big gun rifle and test hoop 34 use slips steel rings are connected, open emptying gate 2 and test, after test, recover getter state.
Adopt the utility model, during oil well operation, compressor 5 is out of service, close import barrier gate 3, discharge control valve 7, wellhead casing pipe gate 12, open emptying gate 2, the dismantle connection slips of threeway hoop and wellhead casing pipe gate 12, take movable elbow 22 as axle, promote connecting line 4, make device not affect operation away from well head.
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 (10)
1. low casing pressure reclaims a device for well casing gas oil inlet and oil return pipeline, it is characterized in that:
Described device comprises threeway hoop (1), emptying gate (2), import barrier gate (3), connecting line (4), compressor (5), short circuit head (6), discharge control valve (7), deposits tracheae (8), ball-and-seat, movable joint (10);
Described threeway hoop (1) upper end is connected with connecting line (4) one end by import barrier gate (3), connecting line (4) other end is connected with the input of compressor (5), the output of compressor (5) in turn by movable joint (10) and ball-and-seat with deposit tracheae (8) one end and be connected;
The described other end of depositing tracheae (8) is connected with oil return pipeline (11) with short circuit head (6) by discharge control valve (7) in turn;
The right-hand member of described threeway hoop (1) is connected with oil well casing (13) by wellhead casing pipe gate (12);
The left end of described threeway hoop (1) is connected with emptying gate (2).
2. according to low casing pressure described in claim 1, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that:
The device that described low casing pressure reclaims well casing gas oil inlet and oil return pipeline also comprises filter membrane device;
Described filter membrane device one end is connected with import barrier gate (3), and the other end is connected with connecting line (4).
3. according to low casing pressure described in claim 2, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that:
Described filter membrane device comprises filter membrane protective cover (14), filter membrane (15), sealing ring (16), filter membrane chamber (17), filter membrane protective cover plug (18), dead stifled (19), Intranet (20), outer net (21);
Described filter membrane protective cover plug (18) is plugged in filter membrane protective cover (14) upper end, sealing ring (16) is plugged in filter membrane protective cover (14) lower end, filter membrane protective cover (14) is placed in filter membrane chamber (17), and dead stifled (19) are connected with upper end, filter membrane chamber (17);
Described outer net (21) is placed in filter membrane protective cover (14) and upper end is connected with filter membrane protective cover plug (18), lower end is connected with the skin of sealing ring (16), and Intranet (20) is socketed in outer net (21) and upper end is connected with filter membrane protective cover plug (18), lower end is connected with the internal layer of sealing ring (16);
Described filter membrane (15) be placed between Intranet (20) and outer net (21) and upper end is connected with filter membrane protective cover plug (18), lower end is plugged in sealing ring (16) internal layer and skin between U-shaped groove in.
4. according to low casing pressure described in claim 1, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that: the horizontal segment of described connecting line (4) is connected by movable elbow (22) with vertical section.
5. according to low casing pressure described in claim 4, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that:
Described movable elbow (22) comprises ball (23), interior central siphon (24), shutoff pipe (25), the second ball alcove (26), outer shaft (27), ball pad (28), the first ball alcove (37);
Described interior central siphon (24) is socketed in the lower shoe centre bore of outer shaft (27), shutoff pipe (25) lower end be plugged in interior central siphon (24) and outer shaft (27) between;
On described interior central siphon (24), be provided with the dividing plate (29) perpendicular to tube wall, between dividing plate (29) and shutoff pipe (25), be provided with the first ball alcove (37), between dividing plate (29) and outer shaft (27), be provided with the second ball alcove (26);
Between described the first ball alcove (37) and shutoff pipe (25), be provided with ball pad (28);
In described the first ball alcove (37) and the second ball alcove (26), be provided with ball (23);
Between the lower shoe centre bore of described outer shaft (27) and interior central siphon (24), be provided with the second sealing ring (38);
Described shutoff pipe (25) upper end is connected with the horizontal segment of connecting line (4).
6. according to low casing pressure described in claim 1, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that:
Described ball-and-seat comprises valve body (30), taper flashboard (31), spring (32), spring base (33);
Described spring base (33) is connected with the lower port of valve body (30), and the tapering point that is placed in the taper flashboard (31) in valve body (30) is connected with valve body (30), and taper flashboard (31) is socketed with one end of spring (32) through spring base (33).
7. according to low casing pressure described in claim 1, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that: described emptying gate (2) is also connected with test hoop (34).
8. according to low casing pressure described in claim 1, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that: the horizontal segment of described connecting line (4) is provided with support (35).
9. according to low casing pressure described in claim 1, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that: the right-hand member of described threeway hoop (1) is provided with steel ring slot (36).
10. according to low casing pressure described in claim 1, reclaim the device of well casing gas oil inlet and oil return pipeline, it is characterized in that: described in deposit tracheae (8) and arrange perpendicular to oil return pipeline (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320459084.6U CN203430487U (en) | 2013-07-30 | 2013-07-30 | Device for recovering and enabling oil well casing gas to enter oil return pipeline with low casing pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320459084.6U CN203430487U (en) | 2013-07-30 | 2013-07-30 | Device for recovering and enabling oil well casing gas to enter oil return pipeline with low casing pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203430487U true CN203430487U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320459084.6U Expired - Fee Related CN203430487U (en) | 2013-07-30 | 2013-07-30 | Device for recovering and enabling oil well casing gas to enter oil return pipeline with low casing pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203430487U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194149A (en) * | 2016-07-11 | 2016-12-07 | 中国石油天然气股份有限公司 | Dehydration filter element, system and method for recovering oil well casing gas |
| CN116066028A (en) * | 2021-11-03 | 2023-05-05 | 中国石油天然气股份有限公司 | Recovery and sampling device for oil well casing gas and use method |
-
2013
- 2013-07-30 CN CN201320459084.6U patent/CN203430487U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194149A (en) * | 2016-07-11 | 2016-12-07 | 中国石油天然气股份有限公司 | Dehydration filter element, system and method for recovering oil well casing gas |
| CN116066028A (en) * | 2021-11-03 | 2023-05-05 | 中国石油天然气股份有限公司 | Recovery and sampling device for oil well casing gas and use method |
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| 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: 20140212 Termination date: 20160730 |