CN212249994U - A portable three-phase separation device for the drainage port of coalbed methane well - Google Patents

Abstract

The utility model provides a portable three-phase separation device for a water outlet of a coalbed methane well, comprising: a detachable casing, a filter screen is arranged inside the casing; a feeding pipeline detachably connected with the upper part of the casing; A drainage pipeline that is detachably connected to the lower part of the shell, and a liquid valve and a liquid flow meter are arranged on the drainage pipeline; a gas collecting part that is detachably connected to the top of the shell, and the gas collecting part includes an exhaust pipeline, A gas collecting bottle and an inverted stand, the exhaust pipeline is provided with a gas valve and a gas flow meter; the inside of the casing is the disassembled feeding pipeline, the drainage pipeline and the storage space of the gas collecting components. The beneficial effects of the utility model are as follows: gas, liquid and solid are self-separated by their own properties under atmospheric pressure, which is convenient to carry, can be used by a single person, and can improve on-site work efficiency; The collection function is fast and efficient, on-site timely detection.

Description

A portable three-phase separation device for the drainage port of coalbed methane well

technical field

The utility model relates to the technical field of coalbed methane drainage and production, in particular to a portable three-phase separation device for the drainage port of a coalbed methane well.

Background technique

Coalbed methane is a clean energy with methane as the main component, and its production process includes drilling, reservoir stimulation and drainage gas production. In the stage of drainage and gas production, the coalbed methane is transported from the bottom of the well to the wellhead through the annulus between the casing and the tubing, and then transported to the compression station through the pipeline connecting the wellhead, and finally supplied to the market; Under the action of the suction pump, it is discharged into the ground pool through the drain pipe. However, due to the poor gas-liquid separation effect at the bottom of the well, the coalbed methane is carried by the liquid and discharged from the drainage pipe, and escapes into the atmosphere. In addition, solid particles such as pulverized coal existing in the coal seam will also be discharged into the pool with the liquid. Therefore, the liquid discharged from the water outlet includes liquid, gas, and solid three-phase substances. The escape of coalbed methane into the atmosphere not only wastes clean energy, but also increases the amount of methane in the air, aggravates the greenhouse effect, and is not conducive to environmental protection. For solids, the amount of discharge can reflect the working environment of the bottom hole pump. It can be seen that the detection of coalbed methane and solids in the liquid discharged from the coalbed methane well is particularly important. At present, the treatment of the output of the drainage outlet mainly focuses on the detection and collection of single-phase, and most of the instruments and equipment used are fixed at the well site for long-term work, and the cost is high, which cannot be popularized and applied on a large scale.

Utility model content

In view of this, this patent provides a portable, fast and simple measurement and collection device, which can meet the discharge detection needs of a large number of coalbed methane wells in the region.

The embodiment of the present utility model provides a portable three-phase separation device for the drainage port of a coalbed methane well, comprising:

A detachable casing, the casing is provided with a filter screen;

a feeding pipeline detachably connected to the upper part of the casing;

a drainage pipeline that is detachably connected to the lower part of the casing, and the drainage pipeline is provided with a liquid valve and a liquid flow meter;

A gas collecting part detachably connected with the top of the casing, the gas collecting part includes an exhaust pipeline, a gas collecting bottle and an upside-down frame, the upside-down frame is fixed on the top of the casing, and the gas collecting bottle is inverted buckled on the inverted stand, the lower end of the exhaust pipeline is communicated with the top of the casing, the upper end extends into the gas collecting bottle, and the exhaust pipeline is provided with a gas valve and a gas flow meter;

The feed pipeline is used to input the three-phase mixture discharged from the water outlet of the coalbed methane well into the shell, the filter screen is used to filter the solids in the three-phase mixture, and the drainage pipeline is used to discharge the three-phase mixture. The liquid in the three-phase mixture, the gas collecting part is used to collect the gas in the three-phase mixture, and the inside of the casing is the disassembled feeding pipeline, the drainage pipeline and the storage space of the gas collecting part.

Further, the casing includes an upper casing and a lower casing, the upper end of the upper casing is closed and the lower end is open, the lower end of the lower casing is closed and the upper end is open, and the lower end of the upper casing and the upper end of the lower casing are closed. One side is hingedly connected, and the lower end of the upper casing and the other side of the upper end of the lower casing are connected by fasteners.

Further, the filter screen is arranged at the upper port of the lower casing.

Further, the filter screen is arranged at the upper port of the lower casing.

Further, the bottom of the inverted stand is provided with a leak-proof gasket.

Further, the casing is a transparent casing, and the surface of the casing is provided with a volume scale.

Further, the feed pipeline, the exhaust pipeline and the drain pipeline are all transparent hoses.

The beneficial effects brought by the technical solutions provided by the embodiments of the present utility model are as follows: a portable three-phase separation device for a coalbed methane well drainage outlet of the present utility model can separate gas, liquid and solid by their own properties under atmospheric pressure conditions, and the feeding pipe The road, drainage pipeline and gas collecting parts are detachably connected and can be stored inside the shell, which is easy to carry and can be used by a single person, which can improve the field work efficiency; Detection, fast and efficient.

Description of drawings

Fig. 1 is the principle diagram of a kind of portable coalbed methane well drain three-phase separation device of the present utility model;

FIG. 2 is a schematic structural diagram of a portable three-phase separation device for the drainage port of a coalbed methane well according to the present invention.

In the figure: 1- shell, 2- filter screen, 3- upper shell, 4- lower shell, 5- directional inlet end, 6- feed line, 7- liquid outlet end, 8- drain line, 9 -Liquid valve, 10-Liquid flow meter, 11-Gas outlet port, 12-Exhaust pipeline, 13-Inverted stand, 14-Gas cylinder, 15-Gas valve, 16-Gas flowmeter, 17-Leak-proof gasket , 18-spindle, 19-pin plug rod, 20-pin plug ring, 21-volume scale, 22-handle, 23-leather pad, 24-bracket, 25-CBM well drain outlet, 26-pool.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present utility model clearer, the embodiments of the present utility model will be further described below with reference to the accompanying drawings.

Please refer to FIGS. 1 and 2 , an embodiment of the present invention provides a portable three-phase separation device for a CBM well drain, including:

A detachable casing 1, the casing 1 is provided with a filter screen 2 inside;

A feed pipeline 6 that is detachably connected to the upper part of the casing 1;

A drainage pipeline 8 detachably connected to the lower part of the casing 1, the drainage pipeline 8 is provided with a liquid valve 9 and a liquid flow meter 10;

A gas collecting component detachably connected to the top of the casing 1, the gas collecting component includes an exhaust pipeline 12, a gas collecting bottle 14 and an upside-down frame 13, and the upside-down frame 13 is fixed on the top of the casing 1, The gas collecting bottle 14 is buckled upside down on the upside-down frame 13 , the lower end of the exhaust pipe 12 communicates with the top of the casing 1 , and the upper end extends into the gas collecting bottle 14 , and the exhaust pipe 12 There is a gas valve 15 and a gas flow meter 16 on it.

Specifically, the casing 1 is in the shape of a transparent barrel, and the casing 1 includes an upper casing 3 and a lower casing 4 both of which are hollow cylindrical. The upper casing 3 has a closed upper end and an open lower end. The lower casing 4. The lower end is closed and the upper end is open. The lower end of the upper casing 3 is hingedly connected to one side of the upper end of the lower casing 4. Here, the lower end of the upper casing 3 and the upper end of the lower casing 4 are hinged through the rotating shaft 18. The upper casing 3 can rotate up and down relative to the lower casing 4 around the rotating shaft 18 to realize the opening and closing of the casing 1 . The lower end of the upper shell 3 and the other side of the upper end of the lower shell 4 are connected by fasteners, and the fasteners here are a bolt insertion rod 19 and a bolt insertion ring 20, and the bolt insertion rod 19 is arranged on the At the lower end of the upper casing 3, the latching ring 20 is arranged on the upper end of the lower casing 4, and the upper casing 3 and the The lower casing 4 is locked.

The filter screen 2 is arranged at the upper port of the lower casing 4 . The filter screen 2 is made of metal or cloth, is circular, and has a diameter slightly larger than the diameter of the outer casing 1 . It is tightly fixed in the middle of the casing 1, which has the advantage of being convenient for replacement.

The upper housing 3 is provided with two outwardly extending tubular ports, a directional inlet end 5 on its upper side and a gas outlet end 11 at its top center. The feeding pipeline 6 is a transparent hose, wherein one end of the feeding pipeline 6 is sleeved with the directional inlet end 5, and the other end is connected to the CBM well drain port 25, so that the CBM well drain outlet fluid is parabolic. Or a slow flow rate flows into the casing 1 .

The lower end of the exhaust pipe 12 is sleeved with the gas outlet end 11 , the inverted stand 13 is funnel-shaped, the bottom of the inverted stand 13 is provided with a leak-proof gasket 17 , and the inverted stand 13 is covered by the Above the gas outlet end 11 , the leak-proof gasket 17 is attached to the top of the upper casing 3 , the bottom of the inverted stand 13 presses the leak-proof gasket 17 , and the gas collecting bottle 14 is buckled upside down. The inverted stand 13 supports and fixes the gas collecting bottle 14 . The detachable connection between the gas flow meter 16 and the exhaust pipeline 12 can be removed when collecting gas, and can be installed when measuring gas flow.

The lower housing 4 is provided with an outwardly extending tubular port, the liquid outlet port 7 . The drainage pipeline 8 is also a transparent hose, one end of the drainage pipeline 8 is sleeved with the liquid outlet end 7 , and the other end extends to the pool 26 . The liquid valve 9 and the liquid flow meter 10 are respectively connected in series on the drainage pipeline 8 .

The surface of the casing 1 is provided with a volume scale 21 , and the volume scale 21 is uniformly arranged on the surfaces of the upper casing 3 and the lower casing 4 in the longitudinal direction. The bottom of the casing 1 is also provided with three brackets 24 and three leather pads 23. The three leather pads 23 are fixed at the bottom of the lower casing 4 at equal distances to protect the casing 1. Each of the brackets 24 The upper end is detachably connected to the leather pad 23 , the lower end of each bracket 24 supports the ground, and the height of the housing 1 can be controlled by adjusting the opening angles of the brackets 24 .

Preferably, the outer side wall of the housing 1 is further provided with a handle 22 , and it is convenient to carry the separation device by holding the handle 22 .

When the portable coalbed methane well drainage three-phase separation device of the present invention is not in operation, the feeding pipeline 6 , the drainage pipeline 8 , the gas collecting part and the three brackets 23 are separated from the casing 1 . disassemble, push the latch rod 19, open the casing 1, put the disassembled feed pipe 6, drain pipe 8, gas collecting parts and the three brackets 24 into the casing 1, close all the the outer shell 1, push the latch rod 19 to make the upper shell 3 and the lower shell 4 close and seal, the inside of the shell 1 is the disassembled feeding pipeline 5, drainage pipeline 8, collecting Storage space for air components and three of the brackets 24. It is easy to carry and can be used by a single person, which can improve the efficiency of on-site work.

Please refer to FIGS. 1 and 2 , the embodiment of the present utility model also provides the above-mentioned measurement method of the three-phase separation device for the drainage port of a portable coalbed methane well, which specifically includes the following steps:

Step S1: Connect the feed pipeline 6 to the nozzle of the CBM well drain, the three-phase mixture discharged from the CBM well drain nozzle 25 is filtered through the filter screen 2, and the solids in the three-phase mixture are stored in the CBM well. On the screen 2, the liquid in the three-phase mixture is discharged from the drainage pipeline 8, and the gas in the three-phase mixture is collected by the gas collecting part;

The portable CBM well drain outlet three-phase separation device should be assembled before the measurement. The specific steps are as follows:

(1) Push the latch rod 19 to open the casing, and take out the feeding pipeline 6, the drainage pipeline 8, the gas collecting part and the three brackets 24 stored in the casing 1;

(2) Install the filter screen 2 on the upper port of the lower casing 4, close the upper casing 3 and the lower casing 4, and push the latch rod 19 to make the upper casing 3 and the lower casing 4 close. The lower casing 4 is locked and sealed;

(3) connecting the feeding pipeline 6 to the directional inlet end;

(4) connecting the drainage pipeline 8 to the liquid outlet end;

(5) Install three brackets 24 on the bottom of the lower casing 4 , and adjust the opening angle of the brackets 24 to control the height of the casing 1 .

Step S2: Measurement of the liquid flow of the three-phase mixture

There are two methods for measuring the liquid flow of the three-phase mixture, as follows:

Method 1: Control the flow rate of the liquid discharged from the drainage pipeline 8 by adjusting the liquid valve 9 to keep the liquid level in the casing 1 at a constant position. At this time, the three-phase input from the feeding pipeline 6 The liquid flow rate of the mixture is the same as the liquid flow rate output from the drainage pipeline 8, and the liquid flow rate value measured by the liquid flow meter 10 is the liquid flow rate of the three-phase mixture.

Method 2: Close the liquid valve 9, use a timing tool to record the set time, obtain the growth volume of the liquid in the housing 1 within the set time, and obtain the liquid flow rate of the three-phase mixture according to the growth volume divided by the set time. The growth volume of the liquid within the set time can be determined according to the volume scale observed on the surface of the casing 1 .

Step S3: measuring the gas flow of the three-phase mixture, specifically:

On the basis of the above step S2 and method 1, the bottom of the casing 1 is to be covered by the liquid. At this time, the liquid blocks the passage of the gas escaping from the liquid outlet end 7 at the bottom of the casing 1. It can be seen from the effect of gravity differentiation , the gas in the liquid will enter the air upward through the gas outlet end 11 . At this time, the gas flow rate escaping from the casing 1 can be obtained at the gas outlet end 11 through the gas flow meter 16 , that is, the three discharged from the drain port. The gas flow of the phase mixture.

Step S4: collecting gas samples in the three-phase mixture, as follows:

(1) On the basis of step 3, install the inverted stand 13 on the top of the upper casing 3;

(2) Fill the gas collecting bottle 14 with the liquid discharged from the drain pipe 8, thereby exhausting the air in the gas collecting bottle 14, then close the gas valve 15, and drain the drain pipe 12 The road is connected to the 14 bottle mouth of the gas collecting bottle;

(3) Invert the gas collecting bottle 14 with the bottle mouth facing down, buckle it upside down in the upside-down frame 13, and connect the exhaust pipe 12 to the gas outlet end 11;

(4) Under the condition that the liquid does not fill the casing 1, the gas valve 15 is opened, and the liquid in the gas collecting bottle 14 flows into the casing 1 under the action of gravity. After all the internal liquid is discharged, the gas in the casing 1 will enter the gas collecting cylinder 14 through the gas outlet 11 and the exhaust pipe 12 due to its low density. According to the gas flow rate measured in step S3 and the The volume of the gas collection cylinder 14, calculate the time when the gas collection cylinder 14 is full of gas;

(5) After the gas collecting bottle 14 is full of gas, close the gas valve 15 , remove the gas collecting bottle 14 from the upside-down stand 13 , and then remove the upside-down stand 13 .

Step S5: collecting the solid phase in the three-phase mixture, the details are as follows:

(1) on the basis of step 4, disassemble and separate the feed pipeline 6 and the coalbed methane well drain nozzle 15;

(2) After the liquid in the casing 1 is completely discharged, push the latch rod 14 to open the casing 3;

(3) Remove the filter screen 2 and collect the solid phase on the filter screen 2 .

Step S6: restore the device after the end

(1) Disassemble the feed pipeline 6, the drainage pipeline 8, the gas collecting part and the three brackets 24 from the casing 1;

(2) Push the latch rod 19, open the casing 1, and put the disassembled feed pipe 6, the drain pipe 8, the gas collecting part and the three brackets 24 into the casing 1. The gas collection bottle 14 and the exhaust line 12 filled with the gas sample are stored separately for future use. In addition, the new gas collection bottle 14 and the exhaust line 12 are placed in the housing 1 to ensure that the gas collection bottle 14 and the exhaust line 12 are new. structural integrity of the set.

(3) Close the casing 1, push the latch rod 19 to make the upper casing 3 and the lower casing 4 close and seal, and the device can be carried through the handle 22.

In this document, the related terms such as front, rear, upper and lower are defined by the positions of the components in the drawings and the positions between the components, which are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of the locative words should not limit the scope of protection claimed in this application.

The above-described embodiments and features of the embodiments herein may be combined with each other without conflict.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (7)

1. a portable coalbed methane well drain three-phase separation device, is characterized in that, comprises: A detachable casing, the casing is provided with a filter screen; a feeding pipeline detachably connected to the upper part of the casing; a drainage pipeline detachably connected to the lower part of the casing, and the drainage pipeline is provided with a liquid valve and a liquid flow meter; A gas collecting component detachably connected to the top of the housing, the gas collecting component includes an exhaust pipeline, a gas collecting bottle and an inverted stand, the inverted stand is fixed on the top of the housing, and the gas collecting bottle is buckled upside down On the inverted stand, the lower end of the exhaust pipeline is communicated with the top of the casing, the upper end extends into the gas collecting bottle, and the exhaust pipeline is provided with a gas valve and a gas flow meter; The feed pipeline is used to input the three-phase mixture discharged from the water outlet of the coalbed methane well into the shell, the filter screen is used to filter the solids in the three-phase mixture, and the drainage pipeline is used to discharge the three-phase mixture. The liquid in the three-phase mixture, the gas collecting part is used to collect the gas in the three-phase mixture, and the inside of the casing is the disassembled feeding pipeline, the drainage pipeline and the storage space of the gas collecting part. 2 . The portable three-phase separation device for a CBM well drain according to claim 1 , wherein the outer casing comprises an upper casing and a lower casing, the upper casing is closed at the upper end and the lower end is open, and the upper casing is closed. The lower end of the lower casing is closed and the upper end is open, the lower end of the upper casing is hingedly connected to one side of the upper end of the lower casing, and the lower end of the upper casing and the other side of the upper end of the lower casing are connected by fasteners. 3 . The portable three-phase separation device for the drainage port of a coalbed methane well according to claim 2 , wherein the filter screen is arranged at the upper port of the lower casing. 4 . 4 . The portable three-phase separation device for the drainage port of a coalbed methane well according to claim 2 , wherein the filter screen is arranged at the upper port of the lower casing. 5 . 5 . The portable three-phase separation device for a CBM well drain according to claim 1 , wherein the bottom of the inverted stand is provided with a leak-proof gasket. 6 . 6 . The portable three-phase separation device for a CBM well drain according to claim 1 , wherein the casing is a transparent casing, and a volume scale is provided on the surface of the casing. 7 . 7 . The portable three-phase separation device for the drainage port of a coalbed methane well according to claim 1 , wherein the feeding pipeline and the drainage pipeline are both transparent hoses. 8 .

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