High-pressure oil, gas, water and solid four-phase separating and metering device for wellhead of skid-mounted oil and gas field

Abstract

The invention discloses a high-pressure oil, gas, water and solid four-phase separating and metering device for a wellhead of a skid-mounted oil and gas field. The high-pressure oil, gas, water and solid four-phase separating and metering device consists of a high-pressure gas separating module and a low-pressure gas, oil, water and solid separating module. The pressure of the mixture of natural gas, oil, water and solid particles which are discharged from a natural gas wellhead is lower than 70 MPa, and the mixture of which the pressure is not reduced can directly enter the device; as throttling depressurization does not exist in a separating process, the temperature cannot be reduced, media do not need to be heated, devices such as a water jacket heater and a throttle manifold are omitted, and the cost and space of the device are greatly reduced; an operator can know and control running conditions of the device at any time through a computer measurement and control center; the power supply of all meter automatic control systems of the device is 500 W only, power consumption of the device is lower than that of the original device by 100 KW every day, and the cost is reduced to a maximum extent; and if a natural gas pipeline network is not laid during production estimation of a new well, the pressure of a natural gas outlet can be regulated to 25-35 MPa, then natural gas can be directly charged into a high-pressure compressed natural gas truck and carried away to be recycled to the natural gas pipeline network or a gas station, energy is recycled in time, gas emission is reduced, and waste of the original pilot torch is avoided.

Description

technical field [0001] The invention relates to a high-pressure oil, gas, water and solid four-phase separation metering device at the wellhead of a skid-mounted oil and gas field. Background technique [0002] At present, the traditional equipment used in natural gas exploration and test production in my country is composed of desander, throttling manifold, medium and low pressure oil, gas and water three-phase separator of water jacket heating furnace, metering tank and so on. Since the exploratory wells are not laid with export pipelines, the separated and metered natural gas can only be ignited and burned, which causes energy waste and environmental pollution. [0003] In the past decades of oil and gas exploration and development, a complete set of ground metering equipment for oil testing and gas testing has been used in large quantities, complicated installation, high equipment cost, cumbersome connection and inconvenient operation, and some well sites are small. The...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a skid-mounted oil and gas field wellhead high-pressure oil, gas, water, and solid four-phase separation metering device, aiming to solve the problems of high cost, large volume, complicated installation and The technical problem of waste of resources and environmental pollution caused by the combustion treatment of the measured separation

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