CN210343325U - Novel small tolerance of oil well measures device - Google Patents
Novel small tolerance of oil well measures device Download PDFInfo
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- CN210343325U CN210343325U CN201920280907.6U CN201920280907U CN210343325U CN 210343325 U CN210343325 U CN 210343325U CN 201920280907 U CN201920280907 U CN 201920280907U CN 210343325 U CN210343325 U CN 210343325U
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Abstract
The utility model discloses a novel small tolerance of oil well metering device, including being responsible for, separator tube, buret, still including branch pipe with higher speed, the branch pipe is the necking down pipe with higher speed, and the necking down pipe is located the separator tube inside, and the upper end of necking down pipe is the small-bore end, and the large-bore end of necking down pipe lower extreme communicates the person in charge after wearing out the separator tube radially, and necking down pipe internally mounted spinning disk, install intraductal separation umbrella, filter the umbrella in the separator tube, the position that intraductal separation umbrella located is higher than port on the necking down pipe, the position that filter the umbrella located is higher than intraductal separation umbrella, the separator tube export is seted up to the separator tube upper end, and separator tube exit linkage buret import, buret export communicate again and are responsible for, install gas flowmeter on the buret. The utility model discloses needn't gather and transport to measure the room with vertical separator oil-logging. The original vertical oil metering mode during metering is replaced. The volume is small, and the investment is saved. Simple process, reliable performance and convenient operation and maintenance.
Description
Technical Field
The utility model belongs to the technical field of the oil well tolerance measurement and specifically relates to a novel small tolerance of oil well measures device.
Background
The metering room is an important facility in oil field production, and is mainly used for metering the liquid production amount and the gas production amount of an oil well and realizing the fine management of the oil well. With the continuous deepening of later exploitation of oil fields, the stratum capacity is continuously reduced, the gas content of stratum crude oil is very weak, the stratum crude oil is basically not degassed or only can be separated from a small amount of gas after being exploited from the ground, and the requirement of oil pressing during normal metering cannot be met.
The existing oil pressing modes of the low-air-quantity metering room are mainly three, namely single-well oil pressing, balance tank oil mounting and oil discharging pump oil mounting, but the three oil pressing modes have the defects of different degrees and greatly affect the safety, efficiency and accuracy of metering.
(2) Single well oil press
The single well oil pressing is the same as the oil pressing in normal oil measuring and gas measuring, the oil pressing is carried out by reversing one well after the measurement is finished, only one well with large gas quantity is found for oil pressing in normal measurement, and the single well oil pressing is carried out by finding one well with the maximum relative gas quantity from the oil wells governed by the low gas quantity measuring room. It should be noted here that the gas is not produced at all during the low gas flow metering, a certain amount of gas can be produced in each well, the separator can discharge the liquid as long as the gas is available, and only the liquid discharge time is different, the liquid discharge time is shorter when the gas flow of a single well is larger, and the liquid discharge time is longer when the gas flow of the single well is smaller. The oil pressing method of the single well oil pressing in the low-air-volume metering room basically needs 6 to 8 hours for one time, and even more, the oil discharging needs more than 20 hours for one time, so that the metering efficiency is seriously influenced, and especially for the metering rooms with more oil wells in jurisdiction, the normal metering task can not be completed completely, so the single well oil pressing problem is long time and low efficiency.
(2) Balance tank oil press
The balance tank is installed under the separator, the balance tank is connected with the gathering flow to realize closed gathering, so that gas released in normal production can form a gas cap at the upper end of the balance tank, the gas cap is connected with the upper gas space of the metering separator, when the gas cap of the balance tank and the upper gas space of the metering separator are conducted, the gas cap and the upper gas space of the metering separator are in the same pressure system, and liquid in the separator flows into the balance tank under the action of dead weight to realize oil pressing due to the higher position of the separator. The method has the advantages that the gas cap is formed in the balancing tank when produced liquid can be separated to give out gas, the larger the gas amount which can be separated from the produced liquid is, the larger the formed gas cap is, but the gas which can be separated from the produced liquid in a low-gas-amount metering room is limited, the gas cap can not be formed above the balancing tank, the prerequisite that the gas cap is connected with the gas space on the upper part of the separator can not be achieved, and the oil pressing can not be achieved. Meanwhile, the investment for installing a balance tank needs at least 20 ten thousand, the balance tank is generally buried underground, the normal detection of the equipment flow is very difficult, and even more, due to the topography problem, the balance tank is in water-logging corrosion for a long time, and the potential safety hazard generated by the balance tank cannot be ignored. From the above analysis, it can be seen that oil can be pressed from a single well when the gas amount is large, and the balancing tank has no meaning when the gas amount is low, but one extra device has one more risk in terms of the safety of the system. Therefore, the balance tank oil is not used much and has little risk.
(3) Oil-pressing oil of oil-discharging pump
The oil-discharging pump presses oil, namely a gear pump is directly arranged at an outlet of a metering separator, and liquid in the separator is directly pumped into a gathering and conveying system. Because the metering separator is a closed space, the pressure in the separator can be reduced inevitably after the liquid in the metering separator is pumped away by the oil discharge pump, once the single-well metering gate is opened next time, because the back pressure of the single well is higher than the pressure of the current separator, a large amount of liquid in the single well and the pipeline can flow into the separator in a short time, and the metering accuracy is seriously influenced. Therefore, the problem of oil pressurized by the oil discharge pump is mainly that the oil is not accurately metered.
At present, the conventional vertical separator is still used as a main means for metering the gas flow of the single well of the oil field. The vertical separator calculates the gas production rate of an oil well through the time of the gas liquid level in the device and the production pressure, but for an intermittent oil well, an oil well with small gas quantity and micro gas quantity has long gas production time, and even does not produce energy gas when the metering condition cannot be met. The gas production of the oil well is taken as basic data, and is not allowed to be lost in terms of production requirements.
Application No.: 201020597246.9 discloses a gas sampler for oil and gas well head, which is used for sampling gas from oil well head. A top pipe is fixed at the top of the separator tank body; the top pipe is connected with a liquid outlet pipe and a gas sampling pipe; a tank middle pipe is fixed in the middle of the separator tank body, one end of the tank middle pipe is arranged in the separator tank body, the outer end of the tank middle pipe is connected with a tee joint, one interface of the tee joint is connected with a pipeline, and a quick joint is fixed at the end part of the pipeline; the other connector of the tee joint is connected with a liquid inlet pipe; a tank bottom pipe is fixed at the bottom of the separator, the tank bottom pipe is connected with a liquid inlet pipe, a quick joint is fixed at the end part of the liquid inlet pipe, and a valve is fixed on a pipeline between the end part of the liquid inlet pipe and a tee joint connected with the tank bottom pipe; a pipeline is connected between a tee joint connected with a tank bottom pipe and a tee joint connected with a tank middle pipe, and a valve is fixed on the pipeline. The method has the advantages that a high-purity gas sample can be taken from the wellhead of the oil production well, and a liquid sample can be taken at the same time, so that a basis is provided for providing safe air using amount for adjusting a scheme.
Application No.: 201410621245.6 discloses an automatic metering device for oil well gas production, which comprises a main pipe, a bypass pipe is opened on each of the upper and lower sides of the main pipe, wherein the bypass pipe at the bottom is a liquid flow passage, the bypass pipe at the upper side is a gas flow passage, the front end port of the main pipe is provided with a gas-liquid cyclone separator, a gas guide pipe extending to and facing the gas-liquid cyclone separator is arranged in the gas flow passage, and a gas volume flow meter is also arranged on the bypass pipe at the upper side. A gap is formed between the outer side of the air duct and the inner wall of the main pipeline, and the gap is a passing gap of the liquid ring. And a secondary separator is further arranged in the bypass pipe on the upper side, the air guide pipe is connected to the front end of the secondary separator, and the gas volume flow meter is arranged behind the secondary separator. The metering device has small volume, reliable performance and convenient operation and maintenance, and is suitable for oil well heads. The metering process is simple, the cost is moderate, the metering precision is high, the low carbon and environmental protection are realized, the pollution is avoided, and the production requirement of the oil field can be met.
The utility model discloses difference with above public technique:
the difference 1 is that the oil well produced liquid is subjected to 3-stage reducing and 4-stage reducing, the flow velocity is improved, and the separation effect can be good after the oil well produced liquid enters the primary vortex sheet. 201410621245.6 requires two-stage separation, namely, two-time cyclone plates, and has a complex structure.
Difference 3, the utility model discloses there are 6 intraductal separation umbrellas and 8 filtration umbrella two-stage filtration, can prevent effectively that gas impurity from getting into gas flowmeter, guarantee that gas flowmeter working medium is pure. 201410621245.6 have no design in this regard.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, the utility model discloses more technical problem and the beneficial effect that will solve, above open technical document all do not have the technological inspiration.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel small tolerance of oil well metering device directly connects at the well head, needn't collect and lose to the vertical separator oil gauging between the measurement. The original vertical oil metering mode during metering is replaced. The volume is small, and the investment is saved. Simple process, reliable performance and convenient operation and maintenance.
In order to achieve the purpose, the utility model adopts the following technical proposal that the novel oil well micro-air quantity metering device comprises a main pipe, a separation pipe, an air quantity pipe and an accelerating branch pipe, the accelerating branch pipe is a necking pipe which is positioned in the separating pipe, the upper end of the necking pipe is a small-caliber end, a large-caliber end at the lower end of the necking pipe radially penetrates out of the separating pipe and then is communicated with the main pipe, a spinning disk is arranged in the necking pipe, the separating umbrella and the filtering umbrella are arranged in the separating pipe, the position of the separating umbrella in the pipe is higher than the upper port of the necking pipe, the position of the filtering umbrella is higher than that of the separating umbrella in the pipe, the upper end of the separating pipe is provided with a separating pipe outlet, the separating pipe outlet is connected with an inlet of the gas pipe, the outlet of the gas pipe is communicated with the main pipe, the gas flow meter is arranged on the gas measuring pipe, and the gas check valve is arranged at the joint of the outlet of the gas measuring pipe and the main pipe.
The accelerating branch pipe comprises a first-stage necking pipe and a second-stage necking pipe which are sequentially connected, the joint of the first-stage necking pipe and the main pipe is provided with a first-stage reducing pipe, the joint of the first-stage necking pipe and the second-stage necking pipe is provided with a second-stage reducing pipe, and the flow area of the first-stage reducing pipe is larger than that of the second-stage reducing pipe.
An annular space is formed between the outer wall of the necking pipe and the inner wall of the separation pipe.
The separation umbrella in the pipe comprises an umbrella-shaped spoke support, a supporting plate and a liquid flow plate, wherein the outer edge of the bottom of the umbrella-shaped spoke support is fixed on the inner wall of the separation pipe through the supporting plate, the liquid flow plate is provided with a plurality of layers, the plurality of layers of liquid flow plates are fixed on the umbrella-shaped spoke support step by step, and a gas channel is formed between every two liquid flow plates.
And a drain valve is arranged at the bottom end of the separation pipe.
The lower half section of the separation pipe is provided with a radial liquid return outlet, the main pipe is provided with a radial liquid return inlet, two ends of the liquid return pipe are respectively connected with the liquid return outlet and the liquid return inlet, and the position of the liquid return outlet is lower than that of the lower port of the necking pipe.
The main pipe is also provided with a buffer port which faces downwards and is connected with a buffer pipe, the buffer pipe forms a buffer section, and the buffer section is closer to the produced liquid inlet of the main pipe or is positioned between the produced liquid inlet of the main pipe and the inlet of the necking pipe.
And a drain valve is also arranged at the bottom end of the buffer tube.
Compared with the prior art, the utility model following beneficial effect has:
1. directly connected to the well head, and does not need to be collected and transported to a metering room for oil metering by a vertical separator.
2. The original vertical oil metering mode during metering is replaced.
3. The volume is small, and the investment is saved.
4. Simple process, reliable performance and convenient operation and maintenance.
The utility model discloses oil well extraction liquid passes through after 3 one-level reducing, passes through 4 second grade reducing again, and the velocity of flow improves, and it just can be fine to advance separation effect behind the spinning disk again. 201410621245.6 requires two-stage separation, namely, two-time cyclone plates, and has a complex structure.
The utility model discloses oil well extraction liquid only passes through the integrative pipeline of trunk line, and the structure is simpler. 201410621245.6 the oil well produced liquid enters from an upper pipeline and a lower pipeline, and the structure is complex.
The utility model discloses there are 6 intraductal separation umbrellas and 8 filtration umbrella two-stage to filter, can prevent effectively that gas impurity from getting into gas flowmeter, guarantee that gas flowmeter working medium is pure. 201410621245.6 have no design in this regard.
Drawings
Fig. 1 is a schematic structural diagram of a novel oil well micro-air quantity metering device of the present invention;
fig. 2 is a structure view of the separating umbrella in the pipe.
The labels in the figure are: 1 is a produced liquid inlet; 2 is a buffer section; 3, primary diameter changing; 4, two-stage diameter variation; 5 is a spinning disk; 6, separating umbrella in tube; 7 is a gas phase region; 8 is a filtering umbrella; 9 is a gas flowmeter; 10 is a produced liquid outlet; 11 is a liquid return pipe; 12 is a liquid phase region; 13 is a blowoff valve; 14 is a gas check valve.
The right support plate 21, the gas channel 22, the liquid flow plate 23 (included angle 100 °), and the left support plate 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution:
a novel oil well micro gas metering device comprises a main pipe, a separation pipe, a gas metering pipe and an accelerating branch pipe, wherein the accelerating branch pipe is a necking pipe, the necking pipe is positioned in the separation pipe, the upper end of the necking pipe is a small-caliber end, the large-caliber end at the lower end of the necking pipe radially penetrates out of the separation pipe and then is communicated with the main pipe, a penetrating port formed in the separation pipe and the outer wall of a lower port of the necking pipe can be connected in a welding sealing mode, and other fixing sealing modes can be adopted certainly; the inner part of the necking pipe is provided with a spinning disk 5, the spinning disk belongs to a conventional part in the field and is a part for rotationally separating oil and gas, and the spinning disk can be directly installed and used, the separating umbrella 6 and the filtering umbrella 8 are arranged in the separating pipe, and in the technical field, the filtering umbrella is arranged in the pipe column and the filtering umbrella per se belongs to the conventional technology in the technical field and can be directly installed and used; the position that intraductal separation umbrella was located is higher than port on the necking pipe, the position that filters the umbrella and locates is higher than intraductal separation umbrella, the separator tube export is seted up to the separator tube upper end, and the import of separator tube exit linkage tolerance pipe, tolerance pipe export intercommunication again are responsible for, and the position that the tolerance union coupling was responsible for can be close to near the extraction liquid export of being responsible for, installation gas flowmeter 9 on the gas buret, the gas check valve is installed with the person in charge junction to the tolerance pipe export.
The accelerating branch pipe can be provided with a first-stage necking pipe or a plurality of stages of necking pipes which are connected in sequence, in the figure of the embodiment, two stages are adopted, and the principle is illustrated; the accelerating branch pipe comprises a first-stage necking pipe and a second-stage necking pipe which are sequentially connected, the joint of the first-stage necking pipe and the main pipe is provided with a first-stage reducing pipe 3, the joint of the first-stage necking pipe and the second-stage necking pipe is provided with a second-stage reducing pipe 4, and the flow area of the first-stage reducing pipe is larger than that of the second-stage reducing pipe.
An annular space is formed between the outer wall of the necking pipe and the inner wall of the separation pipe. Facilitating the separated liquid stream to fall into the liquid phase region.
The separation umbrella in the pipe comprises an umbrella-shaped spoke support, a supporting plate and a liquid flow plate 23, the outer edge of the bottom of the umbrella-shaped spoke support is fixed on the inner wall of the separation pipe through the supporting plate, the liquid flow plate is provided with a plurality of layers, the plurality of layers of liquid flow plates are fixed on the umbrella-shaped spoke support step by step, and a gas channel is formed between every two liquid flow plates. The liquid flow plate is horizontally arranged, and an included angle formed between the liquid flow plate and the spokes of the umbrella-shaped spoke support is 100 degrees.
And a drain valve 13 is arranged at the bottom end of the separation pipe.
The lower half section of the separation pipe is provided with a radial liquid return outlet, the main pipe is provided with a radial liquid return inlet, two ends of the liquid return pipe 11 are respectively connected with the liquid return outlet and the liquid return inlet, and the position of the liquid return outlet is lower than that of the lower port of the necking pipe.
The return pipe 11 is not provided with a check valve. The gas line is provided with a gas check valve 14.
After the gas passes through the gas one-way valve 14, the liquid from the produced liquid outlet 10 and the liquid return pipe 11 joins and then flows out of the device of the utility model.
Since the pressure outside the production fluid outlet 10 is low and the pressure in the liquid phase region 12 is high, there is a pressure difference between them, so that the liquid can be pushed out from the production fluid outlet 10. The liquid return pipe 11 has a certain height, so that a liquid seal function is provided, gas can not flow out from the liquid phase zone 12, and a check valve is not required to be arranged on the liquid return pipe 11. Of course, an upper check valve may be provided, and both are possible.
The main pipe is also provided with a buffer port which faces downwards and is connected with a buffer pipe, the buffer pipe forms a buffer section 2, and the buffer section is closer to the produced liquid inlet of the main pipe or is positioned between the produced liquid inlet of the main pipe and the inlet of the necking pipe.
And a drain valve is also arranged at the bottom end of the buffer tube.
Oil well produced liquid enters the device through the produced liquid inlet 1, is buffered through the buffer section 2, and is subjected to gas-liquid preliminary separation. The gas-liquid mixed liquid passes through the first-stage reducing 3 and then the second-stage reducing 4, the flow speed is improved, the gas and the liquid are separated by more than 90 percent after colliding with the spinning disk 5, the gas enters the gas phase region 7 after passing through the separating umbrella 6 in the pipe, and the liquid is settled to the liquid phase region 12 below the separating umbrella 6. After passing through the filtering umbrella 8, the separated gas is removed of impurities to become a single medium, and after being metered by the gas flowmeter 9, the gas is remixed with the liquid of the liquid return pipe 11, and then flows out of the produced liquid outlet 10 and enters a gathering and transportation pipe network.
The liquid phase may be drained through a drain valve 13.
As shown in fig. 2, the separating umbrella is fixed inside the device by a right support plate 21 and a left support plate 24. When the gas reaches the separation umbrella, it flows through the gas channel 22, and the liquid flows along the liquid flow plate 23 (included angle 100 °) to the liquid phase region 12 in fig. 1.
In the description of the present invention, it should be understood that the orientation indication or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a novel small tolerance metering device of oil well, is including being responsible for, separator tube, gas buret, its characterized in that, still including branch pipe with higher speed, branch pipe is the necking down pipe with higher speed, and the necking down pipe is located the separator tube insidely, and the upper end of necking down pipe is small-bore end, and the large-bore end of necking down pipe lower extreme communicates the person in charge after wearing out the separator tube radially, and necking down pipe internally mounted spinning disk, install intraductal separation umbrella in the separator tube, filter the umbrella, the position that intraductal separation umbrella located is higher than port on the necking down pipe, the position that filter the umbrella located is higher than intraductal separation umbrella, the separator tube export is seted up to the separator tube upper end, and separator tube exit linkage tolerance pipe import, and tolerance pipe export communicates the person in charge again, installation gas flowmeter on the gas buret, the gas bure.
2. The novel oil well micro-gas metering device as claimed in claim 1, wherein the accelerating branch pipe comprises a first-stage neck pipe and a second-stage neck pipe which are connected in sequence, the joint of the first-stage neck pipe and the main pipe is provided with a first-stage reducing diameter, the joint of the first-stage neck pipe and the second-stage neck pipe is provided with a second-stage reducing diameter, and the flow area at the first-stage reducing diameter is larger than that at the second-stage reducing diameter.
3. The novel oil well micro-gas metering device as claimed in claim 1 or 2, wherein an annular space is formed between the outer wall of the necking pipe and the inner wall of the separation pipe.
4. The novel oil well micro-gas metering device as claimed in claim 1 or 2, wherein the separation umbrella in the pipe comprises an umbrella-shaped spoke support, a support plate and a liquid flow plate, the outer edge of the bottom of the umbrella-shaped spoke support is fixed on the inner wall of the separation pipe through the support plate, the liquid flow plate is provided with a plurality of layers, the plurality of layers of liquid flow plates are fixed on the umbrella-shaped spoke support step by step, and a gas channel is formed between every two liquid flow plates.
5. The novel oil well micro-air quantity metering device as claimed in claim 1 or 2, characterized in that a blow-off valve is installed at the bottom end of the separation pipe.
6. The novel oil well micro-gas metering device as claimed in claim 1 or 2, wherein the lower half section of the separation pipe is provided with a radial liquid return outlet, the main pipe is provided with a radial liquid return inlet, two ends of the liquid return pipe are respectively connected with the liquid return outlet and the liquid return inlet, and the position of the liquid return outlet is lower than that of the lower port of the necking pipe.
7. The novel oil well micro-gas metering device as claimed in claim 1 or 2, wherein the main pipe is further provided with a buffer port facing downwards and connected with the buffer pipe, and the buffer pipe forms a buffer section which is closer to the produced liquid inlet of the main pipe or is positioned between the produced liquid inlet of the main pipe and the inlet of the necking pipe.
8. The novel oil well micro-air flow metering device as claimed in claim 7, wherein a blowoff valve is also arranged at the bottom end of the buffer tube.
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| CN201920280907.6U CN210343325U (en) | 2019-03-06 | 2019-03-06 | Novel small tolerance of oil well measures device |
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| CN201920280907.6U CN210343325U (en) | 2019-03-06 | 2019-03-06 | Novel small tolerance of oil well measures device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016996A (en) * | 2020-07-15 | 2022-02-08 | 山东天工石油装备有限公司 | Online metering device of two tipping buckets |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016996A (en) * | 2020-07-15 | 2022-02-08 | 山东天工石油装备有限公司 | Online metering device of two tipping buckets |
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