CN210068096U - Blowdown system for gas collecting line accumulated liquid returned from natural gas well mouth - Google Patents

Abstract

The utility model discloses a drainage system of gas collecting line hydrops is returned to natural gas well head, include gas production device, first high-pressure line and be the second high-pressure line of U type setting, the gas production device is connected with first high-pressure line's one end. The utility model discloses in, through second high-pressure line, the second gate valve, the tee junction head, first gate valve, the ball valve, simple and easy separator, the ignition gap, spark arrester and the mating reaction of flowing back jar, the hydrops that has reached first high-pressure line inside advances the inside effect of flowing back jar through second high-pressure line and third high-pressure line, the hydrops problem of gas well gas collecting line has been solved, a large amount of manpower and material resources have been practiced thrift, gas collecting line pipe transmission efficiency has been improved, the completion of production task has been guaranteed, simultaneously through simple and easy separator branch reason out sewage, and with sewage discharge to flowing back in the jar, prevent because of the sewage splash out the jar body, the pollution that causes soil, the potential safety hazard has been got rid of, the normal production of gas well has been guaranteed.

Description

Blowdown system for gas collecting line accumulated liquid returned from natural gas well mouth

Technical Field

The utility model relates to a natural gas exploitation equipment technical field, more specifically say, in particular to drainage sewage system of gas collecting line hydrops is returned to natural gas well head.

Background

At present, in the field of natural gas exploitation and production, a gas collecting pipe network of a medium-pressure gathering and transportation process gas well adopts a combined pipe network (a radial pipe network and a branched pipe network), and the phenomenon of liquid accumulation of partial well field pipelines is serious due to complex landform, fluctuating terrain and long pipelines. If the accumulated liquid can not be discharged, the pressure of a pipe network of a part of gas production pipelines is too high, the gas well emergency cut-off valve frequently jumps, and the pipeline transportation efficiency is reduced. When the gas well emergency cut-off valve jumps, the well needs to be opened and closed frequently by manpower, which wastes a large amount of manpower and material resources; when the pipeline transportation efficiency is reduced, the production task cannot be completed, and certain economic loss is caused; when the gas collecting pipeline is in a liquid accumulation state for a long time, certain potential safety hazards exist in the production process of the gas well.

Therefore, the drainage system for the accumulated liquid in the gas collecting pipeline is provided by the natural gas wellhead backflow to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drainage of gas collecting line hydrops is returned to natural gas well head has solved the problem that the pipeline hydrops among the prior art can't in time be returned and has the potential safety hazard.

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

the utility model provides a blowdown system of natural gas well head flowback gas collecting line hydrops, includes gas production device, first high-pressure line and the second high-pressure line that is the U type setting, gas production device is connected with first high-pressure line's one end, install first gate valve, differential pressure table, flowmeter and third gate valve on the first high-pressure line in proper order, the both ends of second high-pressure line respectively with first high-pressure line fixed connection, just second high-pressure line communicates with each other with first high-pressure line, install the second gate valve on the second high-pressure line, install the third high-pressure line on the second high-pressure line, install ball valve, stop valve, simple and easy separator and flowback jar on the third high-pressure line in proper order, install the ignition mouth on the simple and easy separator.

Preferably, one end of the second high-pressure pipeline is located between the gas production device and the first gate valve, the differential pressure gauge, the flow meter and the third gate valve are located between two ends of the second high-pressure pipeline.

Preferably, the second high-pressure line is connected with the third high-pressure line by a three-way joint.

Preferably, the return tank is installed at a discharge end of the third high pressure line.

Preferably, the simple separator is connected with the ignition port through a flame arrester.

The embodiment of the utility model provides a technical scheme can include following beneficial effect:

the utility model discloses in, through second high-pressure line, the second gate valve, the tee junction head, first gate valve, the ball valve, simple and easy separator, the ignition gap, spark arrester and the mating reaction of flowing back jar, the hydrops that has reached first high-pressure line inside advances the inside effect of flowing back jar through second high-pressure line and third high-pressure line, the hydrops problem of gas well gas collecting line has been solved, a large amount of manpower and material resources have been practiced thrift, gas collecting line pipe transmission efficiency has been improved, the completion of production task has been guaranteed, simultaneously through simple and easy separator branch reason out sewage, and with sewage discharge to flowing back in the jar, prevent because of the sewage splash out the jar body, the pollution that causes soil, the potential safety hazard has been got rid of, the normal production of gas well has been guaranteed.

Drawings

Fig. 1 is a schematic structural view of a drainage system for gas collection line accumulated liquid returned from a natural gas wellhead;

fig. 2 is the utility model provides a connection structure sketch map of simple and easy separator, spark arrester and ignition hole among natural gas well head flowback gas collecting line hydrops's the drainage system.

In the figure: 1. a three-way connector; 2. a simple separator; 3. a return tank; 4. a ball valve; 5. a first gate valve; 6. a stop valve; 7. a gas production device; 8. an ignition port; 9. a flame arrestor; 10. a second gate valve; 11. a third gate valve; 12. a differential pressure gauge; 13. a flow meter; 14. a first high pressure line; 15. a second high pressure line; 16. a third high pressure line.

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.

Referring to fig. 1-2, a blowdown system for gas collecting line accumulated liquid flowing back from a natural gas wellhead comprises a gas production device 7, a first high-pressure pipeline 14 and a second high-pressure pipeline 15 arranged in a U shape, wherein the gas production device 7 is connected with one end of the first high-pressure pipeline 14, a first gate valve 5, a differential pressure gauge 12, a flow meter 13 and a third gate valve 11 are sequentially installed on the first high-pressure pipeline 14, two ends of the second high-pressure pipeline 15 are fixedly connected with the first high-pressure pipeline 14 respectively, the second high-pressure pipeline 15 is communicated with the first high-pressure pipeline 14, and the gas production device 7 collects natural gas inside the first high-pressure pipeline 14; the first gate valve 5 and the third gate valve 11 function to control the flow state of the first high-pressure line 14; the differential pressure gauge 12 and the flow meter 13 are provided to facilitate observation of the gas flow inside the first high-pressure line 14.

Wherein, a second gate valve 10 is arranged on a second high-pressure pipeline 15, a third high-pressure pipeline 16 is arranged on the second high-pressure pipeline 15, a ball valve 4, a stop valve 6, a simple separator 2 and a return tank 3 are sequentially arranged on the third high-pressure pipeline 16, an ignition port 8 is arranged on the simple separator 2, one end of the second high-pressure pipeline 15 is positioned between a gas production device 7 and a first gate valve 5, the first gate valve 5, a differential pressure gauge 12, a flowmeter 13 and a third gate valve 11 are positioned between two ends of the second high-pressure pipeline 15, the second high-pressure pipeline 15 is connected with the third high-pressure pipeline 16 through a three-way connector 1, the ball valve 4 and the third gate valve 11 play a double-insurance role, natural gas mixed with liquid is led to the simple separator 2 through the third high-pressure pipeline 16 made of seamless steel material for gas-liquid separation, natural gas is discharged and ignited, a flame arrester 9 is arranged below the ignition port 8 to prevent the simple separator 2 from backfire and flash explosion, liquid is discharged to the backflow tank 3 through the third high-pressure pipeline 16, and is transported outside through the sewage truck, and when the backflow gas and liquid are in a mixed state in the early stage and the later stage of the backflow process, the flow is controlled through the stop valve 6, and the ignition port 8 on the simple separator 2 is manually ignited, so that the gas combustion is reduced, and the environmental pollution is reduced.

Wherein, the jar of returning 3 is installed at the discharge end of third high pressure line 16, and simple and easy separator 2 passes through spark arrester 9 and is connected with ignition door 8, and the effect of jar of returning 3 is collected the sewage that simple and easy separator 2 separated, prevents because of the sewage splash jar body, the pollution that causes soil.

The utility model discloses in, the natural gas who thoughtlessly has liquid leads simple and easy separator 2 through seamless steel material's third high-pressure line 16, carry out gas-liquid separation, natural gas unloading is igniteed, spark-arrestor 9 is installed to 8 below ignition gate, prevent that simple and easy separator 2 from tempering and exploding suddenly, liquid rethread third high-pressure line 16 is arranged to the flowback jar 3 in, carry out outward transport through the sewage vehicle at last, and the use of having installed ball valve 4 on third gate valve 11 and the third high-pressure line 16 has been installed on second high-pressure line 15 is the effect that plays the dual fail-safe, in earlier stage and later stage when the flowback in-process, when the gas-liquid mixture state, through 6 control flow of stop valve sizes, the manual work is igniteed at ignition gate 8 on simple and easy separator 2, make gas combustion reduce environmental pollution.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, no detailed description here again.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a blowdown system of natural gas well head flowback gas gathering line hydrops, includes gas production device (7), first high-pressure line (14) and second high-pressure line (15) that are the U type setting, its characterized in that, gas production device (7) are connected with the one end of first high-pressure line (14), install first gate valve (5), differential pressure table (12), flowmeter (13) and third gate valve (11) on first high-pressure line (14) in proper order, the both ends of second high-pressure line (15) respectively with first high-pressure line (14) fixed connection, just second high-pressure line (15) communicate with each other with first high-pressure line (14), install second gate valve (10) on second high-pressure line (15), install third high-pressure line (16) on second high-pressure line (15), install ball valve (4) in proper order on third high-pressure line (16), Stop valve (6), simple and easy separator (2) and flowback jar (3), install ignition mouth (8) on the simple and easy separator (2).

2. The blowdown system of the gas collecting line accumulated liquid at the natural gas wellhead return according to claim 1, wherein one end of the second high-pressure line (15) is positioned between the gas production device (7) and the first gate valve (5), the differential pressure gauge (12), the flow meter (13) and the third gate valve (11) are positioned between two ends of the second high-pressure line (15).

3. The blowdown system of natural gas wellhead flowback gas collection line accumulated liquid as claimed in claim 1, wherein the second high pressure pipeline (15) is connected with the third high pressure pipeline (16) through a three-way connector (1).

4. The blowdown system of natural gas wellhead return gas collection line accumulated liquid as claimed in claim 1, wherein the return tank (3) is installed at the discharge end of the third high pressure line (16).

5. The blowdown system of the accumulated liquid in the gas collecting pipeline returned from the natural gas wellhead as claimed in claim 1, wherein the simple separator (2) is connected with the ignition port (8) through a flame arrester (9).

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