CN215505902U

CN215505902U - Gas well filtering and dewatering device

Info

Publication number: CN215505902U
Application number: CN202122077937.7U
Authority: CN
Inventors: 邵小平; 蒋永平; 刘晓; 刘波; 崔彬; 詹俊
Original assignee: China Petroleum and Chemical Corp; Sinopec East China Oil and Gas Co
Current assignee: China Petroleum and Chemical Corp; Sinopec East China Oil and Gas Co
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-14
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a gas well filtering and dewatering device which comprises a filter body, wherein a base is arranged below the filter body, a deposition barrel is arranged inside the base, an umbrella-shaped cap is arranged above the deposition barrel, a central guide pipe is arranged above the umbrella-shaped cap, a spiral guide vane is arranged outside the central guide pipe, a partition plate is sleeved at the position, close to the top end part of the central guide pipe, outside the central guide pipe, a sieve pipe is communicated with the upper part of the central guide pipe, a filter element is arranged inside the sieve pipe, an air inlet pipe and an air outlet pipe are respectively arranged outside the filter body, a balance pipe is communicated with the outside of the filter body, and one end, far away from the filter body, of the balance pipe is connected with a floating ball type automatic drainer. The utility model can effectively filter water and impurities by matching the components, prevent the water and the impurities from entering the flowmeter, prolong the service life of the flowmeter and be beneficial to improving the metering accuracy of the flowmeter.

Description

Gas well filtering and dewatering device

Technical Field

The utility model relates to the technical field of gas wells, in particular to a gas well filtering and water removing device.

Background

The natural gas well can cause the unstable formation to destroy under the action of drilling, fracturing engineering and drainage and production disturbance, when in later drainage and production, the gas can contain hydrate and some impurities, the hydrate enters the gas flow to cause pipeline ice blockage and pipeline water accumulation, the safe operation of a gathering and transportation pipeline is seriously influenced, the impurities can cause inaccurate metering of a metering device in a manifold and the operation risk of natural gas equipment, and therefore, the removal of the hydrate and the impurities in the produced gas is the primary problem of the safe production of the gas well.

The gas well production metering yield is basically measured by adopting a precession vortex flowmeter single well and then converged into a gathering and transporting pipeline to enter a gas collecting station area, impurities are contained in gas to block an inlet of the flowmeter, the gas contains formation water, the mineralization degree is high, salt accumulation is easily formed at a suction inlet, the inlet of the flowmeter is reduced, the metering precision of the flowmeter is influenced, water separated out by a gas well wellhead filter cannot be discharged in time and is brought into a flow, the pipeline is iced and blocked in winter, the output pressure of the pipeline is increased, the friction resistance is increased, the pipeline is seriously blocked, water filtered by the filter needs manual drainage, and the workload is large.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a gas well filtering and water removing device.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a gas well filtering and dewatering device comprises a filter body, a base is arranged below the filter body, a deposition barrel is arranged in the base, an umbrella-shaped cap is arranged above the deposition barrel, a central guide pipe is arranged above the umbrella-shaped cap, the outer side of the central conduit is provided with a spiral guide vane, the position of the outer side of the central conduit close to the top end part of the central conduit is sleeved with a clapboard, a sieve tube is communicated above the central guide tube, a filter element is arranged at the inner side of the sieve tube, an air inlet pipe and an air outlet pipe are respectively arranged at the outer side of the filter body, the outer side of the filter body is communicated with a balance pipe, one end of the balance pipe, which is far away from the filter body, is connected with a floating ball type automatic drainer, the floating ball type automatic water drainer is also connected with a fine filter, and the other end of the fine filter is communicated with the inside of the filter body.

Furthermore, the outer side of the filter body is provided with a filter lower flange near the top end of the filter body, the top end of the sieve tube extends to the outer side of the filter body, the outer side of the sieve tube is provided with a filter upper flange, the outer side of the sieve tube is provided with a filter element gland lower flange near the top end of the sieve tube, and the upper side of the sieve tube is provided with a filter element gland upper flange.

Furthermore, a drain valve is connected to the outer side of the deposition barrel.

Furthermore, the outer side of the partition plate and the inner side wall of the filter body are sealed through an O-shaped sealing ring, the interior of the filter body is divided into an upper cavity and a lower cavity, the air inlet pipe is communicated with the lower cavity, and the air outlet pipe is communicated with the upper cavity.

Furthermore, the umbrella-shaped cap is connected with the top of the base through a plurality of pillars.

Furthermore, one end, far away from the filter body, of the air inlet pipe is connected with the gas well, and one end, far away from the filter body, of the air outlet pipe is connected with a flowmeter.

Furthermore, a valve is arranged on the balance pipe.

Furthermore, the fine filter is externally connected with a water outlet pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. the water and impurities can be effectively filtered, the water and the impurities are prevented from entering the flowmeter, the service life of the flowmeter is prolonged, and the metering accuracy of the flowmeter is improved;

2. automatic drainage can be realized, the labor intensity of workers is reduced, and the drainage efficiency is improved;

3. the filter element is convenient to replace, the upper flange of the filter and the lower flange of the filter are disassembled, and the filter element is replaced, so that the operation time is saved, and the well opening rate of the gas well is increased.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic view of the structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1: the embodiment of the utility model provides a gas well filtering and dewatering device, referring to fig. 1, which comprises a filter body 1, wherein a base 22 is arranged below the filter body 1, a deposition barrel 15 is arranged inside the base 22, an umbrella-shaped cap 14 is arranged above the deposition barrel 15, a central guide pipe 9 is arranged above the umbrella-shaped cap 14, a spiral guide vane 10 is arranged outside the central guide pipe 9, a partition plate 8 is sleeved outside the outer side of the central guide pipe 9 near the top end of the central guide pipe, a screen pipe 7 is communicated above the central guide pipe 9, a filter element 4 is arranged inside the screen pipe 7, an air inlet pipe 18 and an air outlet pipe 19 are respectively arranged outside the filter body 1, a balance pipe 16 is communicated outside the filter body 1, one end of the balance pipe 16, which is far away from the filter body 1, is connected with a floating ball type automatic drainer 13, and a fine filter 12 is further connected on the floating ball type automatic drainer 13, the other end of the fine filter 12 communicates with the inside of the filter body 1.

The filter is characterized in that a filter lower flange 3 is arranged on the outer side of the filter body 1 close to the top end of the filter body, the top end of the sieve tube 7 extends to the outer side of the filter body 1, a filter upper flange 2 is arranged on the outer side of the sieve tube 7, a filter element gland lower flange 6 is arranged on the outer side of the sieve tube 7 close to the top end of the sieve tube, and a filter element gland upper flange 5 is arranged above the sieve tube 7.

The outside of the deposition barrel 15 is connected with a drain valve 11.

The outer side of the partition plate 8 and the inner side wall of the filter body 1 are sealed through an O-shaped sealing ring 20, the interior of the filter body 1 is divided into an upper cavity and a lower cavity, the air inlet pipe 18 is communicated with the lower cavity, and the air outlet pipe 19 is communicated with the upper cavity.

The umbrella cap 14 is connected to the top of the base 22 by a plurality of struts 21.

One end of the air inlet pipe 18, which is far away from the filter body 1, is connected with a gas well, and one end of the air outlet pipe 19, which is far away from the filter body 1, is connected with a flowmeter.

The balance pipe 16 is provided with a valve.

The fine filter 12 is externally connected with a water outlet pipe 17.

The filter lower flange 3, the sieve tube 7, the partition plate 8, the spiral guide vane 10 and the central conduit 9 are superposed and connected with each other by welding, the outer diameter of the spiral guide vane 10 is smaller than the inner diameter of the filter body 1, a 0-shaped sealing ring 20 is arranged on the outer side of the partition plate 8, the partition plate 8 and the inner wall of the filter body 1 are sealed by the O-shaped sealing ring 20, and the interior of the filter body 1 is divided into an upper cavity and a lower cavity;

the filter element 4 is cylindrical and is a vertical through body, the filter element 4 is pressed into the sieve tube 7 by the mutual matching of the filter element gland upper flange 5 and the filter element gland lower flange 6, the filter element upper flange 2 and the filter element lower flange 3, the filter element gland upper flange 5 and the filter element gland lower flange 6 are all connected by bolts, and a sealing gasket is arranged;

when water flows into the floating ball type automatic drainer 13, the floating ball floats upwards under the buoyancy of the water, the automatic drain outlet is opened, when the water is drained completely, the floating ball falls, the automatic drain outlet is closed, a fine filter 12 is arranged in front of the drainer and used for filtering impurities and preventing the water from bringing the impurities into the floating ball type automatic drainer 13, the balance pipe is used for preventing gas from entering the cavity of the floating ball type automatic drainer 13, so that newly entered condensed water cannot enter the drainer, and when gas exists in the cavity, the condensed water enters the filter body through the balance pipe, so that the water flows into the floating ball type automatic drainer 13 to realize automatic drainage;

when a gas well wellhead water-gas mixture enters a lower chamber of a filter body 1 through an air inlet pipe 18 and is guided by a spiral guide vane 10, the water-gas mixture is enabled to enter the lower chamber in a rotating manner, under the action of high-speed centrifugal force, water and gas with different densities are centrifugally separated, water and impurities with high densities are deposited at the bottom of the filter body 1 downwards under the action of gravity along the inner wall of the filter body 1, primary separation is realized, separated gas collides with an umbrella-shaped cap 14 through rotational flow guide, secondary collision separation is realized, filtered gas is guided by a central guide pipe 9 to move upwards to enter an upper chamber, under the action of gravity separation, part of water falls and sinks at the bottom of the filter body 1, cleaner gas passes through a filter element 4 and a sieve pipe 7, residual impurities and water are filtered again and then enters the upper chamber, and filtered pure gas enters a flow meter through an air outlet 19 and then enters a collecting and conveying pipeline after being accurately metered, the water sinking into the bottom enters a floating ball type automatic drainer 13 through a water outlet pipe 17 and a fine filter 12, the water sinking into the bottom is drained in time, and the impurities at the bottommost part of the sediment are manually drained at regular time through a drain valve 11.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a gas well filters water trap, includes filter body (1), its characterized in that: a base (22) is arranged below the filter body (1), a deposition barrel (15) is arranged inside the base (22), an umbrella-shaped cap (14) is arranged above the deposition barrel (15), a central guide pipe (9) is arranged above the umbrella-shaped cap (14), spiral guide vanes (10) are arranged on the outer side of the central guide pipe (9), a partition plate (8) is sleeved on the outer side of the central guide pipe (9) close to the end part of the top end of the central guide pipe, a sieve pipe (7) is communicated above the central guide pipe (9), a filter element (4) is arranged on the inner side of the sieve pipe (7), an air inlet pipe (18) and an air outlet pipe (19) are respectively arranged on the outer side of the filter body (1), a balance pipe (16) is communicated with the outer side of the filter body (1), and one end, far away from the balance pipe (16), of the filter body (1 is connected with a floating ball type automatic drainer (13), the floating ball type automatic water draining device (13) is also connected with a fine filter (12), and the other end of the fine filter (12) is communicated with the inside of the filter body (1).

2. A gas well filtration water removal unit as claimed in claim 1, wherein: the filter is characterized in that a filter lower flange (3) is arranged on the outer side of the filter body (1) close to the top end of the filter body, the top end of the sieve tube (7) extends to the outer side of the filter body (1), a filter upper flange (2) is arranged on the outer side of the sieve tube (7), a filter element gland lower flange (6) is arranged on the outer side of the sieve tube (7) close to the top end of the sieve tube, and a filter element gland upper flange (5) is arranged above the sieve tube (7).

3. A gas well filtration water removal unit as claimed in claim 2, wherein: the outer side of the deposition barrel (15) is connected with a drain valve (11).

4. A gas well filtration water removal unit as claimed in claim 1, wherein: the outer side of the partition plate (8) and the inner side wall of the filter body (1) are sealed through an O-shaped sealing ring (20), the interior of the filter body (1) is divided into an upper chamber and a lower chamber, the air inlet pipe (18) is communicated with the lower chamber, and the air outlet pipe (19) is communicated with the upper chamber.

5. A gas well filtration water removal unit as claimed in claim 4, wherein: the umbrella-shaped cap (14) is connected with the top of the base (22) through a plurality of struts (21).

6. A gas well filtration water removal unit as claimed in claim 1, wherein: one end, far away from the filter body (1), of the air inlet pipe (18) is connected with a gas well, and one end, far away from the filter body (1), of the air outlet pipe (19) is connected with a flowmeter.

7. A gas well filtration water removal unit as claimed in claim 1, wherein: the balance pipe (16) is provided with a valve.

8. A gas well filtration water removal unit as claimed in claim 1, wherein: the fine filter (12) is externally connected with a water outlet pipe (17).