CN203626796U - Natural gas well desanding device - Google Patents

Abstract

The utility model discloses a natural gas well sand removing device is designed for avoiding the gravel to erode the pipe wall and preventing the pipeline from freezing and blocking. The desanding cylinder of the desanding device is arranged on the bracket, two ends of the desanding cylinder are respectively connected with the mixed gas inlet flange and the desanding opening flange cover, the top of the desanding cylinder is provided with a pressure relief opening, the bottom of the desanding cylinder is provided with a gas-liquid outlet, and the gas-liquid outlet is connected with the gas-liquid outlet flange through a bent pipe; a filter cartridge which is supported by the guide rail and is horizontally arranged is hermetically arranged in the sand removing cylinder; the two ends of the suspender are respectively connected with the top surface of the desanding opening flange cover and the side surface of the desanding cylinder. The sand removing device can filter sand carried by gas running at high speed in the natural gas well and take liquid out of the device, so that gravel is prevented from scouring and damaging pipelines, freezing and blocking in the device are prevented, and continuous and safe production of the gas well is guaranteed.

Description

Natural gas well desanding device

technical field

The utility model relates to a sand removing device for a natural gas well, which belongs to the technical field of natural gas production.

Background technique

In the current natural gas production, due to technological requirements, a large amount of fracturing sand must be injected downhole to fracture the gas well before production. After the natural gas well is put into production, the fracturing sand enters the pipeline along with the natural gas from the downhole, and moves at high speed in the pipeline, scouring the pipe wall and elbow, causing the pipeline wall to puncture and leak, causing leakage or explosion safety hazards. At the same time, natural gas brings some moisture underground to surface pipelines, and forms natural gas hydrate at high pressure and certain low temperature, which will cause freezing blockage, seal and block pipelines, and cause natural gas production to stagnate. Although ordinary filters can filter sand, due to structural reasons, part of the water is also intercepted when filtering sand, forming fluid accumulation and causing freezing blockage.

Contents of the invention

The purpose of the utility model is to provide a desanding device for natural gas wells, so as to reduce the erosion of sand and gravel on the pipe wall and prevent the pipeline from freezing and blocking.

Concrete technical content of the present utility model is as follows:

The desanding cylinder of this desanding device is set on the bracket, and the two ends of the desanding cylinder are respectively connected to the inlet flange of the mixed gas and the flange cover of the desanding port. The top of the desanding cylinder is provided with a pressure relief port, and the bottom is provided with a gas-liquid outlet. The gas-liquid outlet is connected to the gas-liquid outlet flange through an elbow; the inside of the desanding cylinder is sealed with a horizontally placed filter cylinder supported by guide rails;

The desanding device can filter out the sand carried by the gas running at high speed in the natural gas well, and take the liquid out of the device, so as to avoid sand erosion and damage to the pipeline, prevent freezing and blocking in the device, and ensure the continuous and safe production of the gas well.

Description of drawings

Figure 1 is a schematic diagram of the structure of a sand removal device for a natural gas well.

Fig. 2 is the right side view of the desanding device for the natural gas well.

Fig. 3 is a top view of a sand removal device for a natural gas well.

Detailed ways

Example:

The embodiment of the utility model is further described with reference to Fig. 1 to 3:

The sand removal device includes mixed gas inlet 1, gas-liquid outlet flange 2, sand removal cylinder 3, pressure relief port 4, filter cartridge 5, sand removal port flange cover 6, guide rail 7, gas-liquid outlet 8, bracket 9 and Boom 10;

The desanding cylinder 3 is set on the bracket 9, the two ends of the desanding cylinder 3 are respectively connected to the mixed gas inlet flange 1 and the desanding port flange cover 6 through bolts, the top of the desanding cylinder 3 is provided with a pressure relief port 4, and the bottom is provided with a The gas-liquid outlet 8 is connected to the gas-liquid outlet flange 2 through an elbow. A filter cartridge 5 supported by a guide rail 7 and placed horizontally is sealed inside the sand removal cartridge 3 . Both ends of the boom 10 are respectively connected to the top surface of the flange cover 6 of the desanding port and the side of the desanding cylinder 3 .

The mixed gas enters the filter cartridge 5 located in the sand removal cartridge 3 horizontally through the mixed gas inlet 1, and the filter sand is trapped in the cartridge, while the gas and water flow out through the gas-liquid outlet 8 and enter the next-stage pipeline. Since the gas-liquid outlet 8 is located at the lowest point of the desanding cylinder 3, no accumulation of liquid will remain in the device, thereby avoiding the occurrence of freezing blockage. When stopping production, open the desanding port flange cover 6, extract the filter cartridge 5, remove the gravel in the cartridge, and then put the filter cartridge 5 back in the desanding cartridge 3 for continued use.

Claims (1)

1. A natural gas well desanding device, characterized in that: The desanding cylinder (3) of the desanding device is set on the bracket (9), and the two ends of the desanding cylinder (3) are respectively connected to the mixed gas inlet flange (1) and the flange cover of the desanding port (6). There is a pressure relief port (4) on the top of the barrel (3), and a gas-liquid outlet (8) on the bottom, and the gas-liquid outlet (8) is connected to the gas-liquid outlet flange (2) through an elbow; A horizontal filter cartridge (5) supported by the guide rail (7) is sealed and arranged; the two ends of the suspender (10) are respectively connected to the top surface of the sand removal port flange cover (6) and the side surface of the sand removal cartridge (3).

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