A composite oil-gas separation device and method with internal swirl flow and external network pipe

Abstract

The invention relates to a composite oil-gas separation device and method of an internal swirl and an external network pipe. The device is composed of a centrifugal swirl system, a network pipe separator and a storage system. The centrifugal cyclone system separates the oil and gas through the spiral rising coil in the centrifugal cyclone separation tank. After the oil and gas mixture enters the oil unloading pool and rests, the gas enters the separation chamber through the exhaust hole and rises to the gas collection chamber for collection. The net tube separator surrounds the outside of the centrifugal cyclone separation tank. After the oil-gas mixture enters the separation main pipe, under the action of gravity, the gas enters the gas lift pipe, and the oil flows into the downcomer pipe. Under the joint action of multiple gas lift pipes and downcomer pipes, the oil-gas mixture is fully separated, the gas flows into the gas storage tank through the gas collection pipe, and the oil flows into the oil storage tank through the oil collection pipe. The residual gas in the oil storage tank flows into the gas storage tank through the gas distribution pipe between the tanks, which ensures the oil-gas separation effect.

Description

technical field [0001] The invention belongs to the technical field of oil and gas gathering and transportation technology for oil exploitation surface engineering, and in particular relates to a composite oil and gas separation device and method with internal swirling flow and external network management. Background technique [0002] With the continuous reduction of proven conventional oil and gas resources on land, the deep sea, an area with great oil and gas development potential, has gradually received attention. Especially since 2010, a series of major breakthroughs have been made in global deep-water oil and gas exploration, and deep-sea oil and gas has become the most important energy replacement field. The 21st century is called the ocean century, especially for the oil industry. However, offshore oil and gas development has significant characteristics such as high risk, high cost, and harsh environment. The recovery and processing device needs to be placed on a li...

AI Technical Summary

Problems solved by technology

Among them, the vertical oil-gas separator has problems such as small gas volume and poor separation effect; the horizontal oil-gas separator has the problems of difficult liquid level control, large floor area, and difficult removal of sand, mud and other debris; spherical oil-gas separation The device is troublesome to manufacture, the separation space and liquid level buffer capacity are limited, and the liquid level control is strictly required

These three oil and gas separators have their own advantages and disadvantages, and the oil and gas separation devices commonly used in onshore oilfields cannot be directly applied to offshore platforms

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