Multi-cavity rotational flow type crude separation device for downhole oil recovery
A coarse separation and swirling technology, which is applied in swirl devices, devices whose axial direction can be reversed, and mining fluids, etc., can solve the problems of energy, capital waste, and poor separation effect of separation devices, and achieve Speed up liquid drainage, reduce energy consumption and capital investment, and prevent oil-water miscibility
Active Publication Date: 2017-05-31
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-chamber swirl type coarse separation device for downhole oil production, which can be used as an electric submersible pump oil production device Part of the downhole unit to solve the problems of poor separation effect of existing separation devices and waste of energy and funds
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[0024] see Figure 1-Figure 4 , which is a preferred embodiment of the present invention
[0025] The traditional electric submersible pump oil recovery device is composed of the downhole unit, the power transmission part, and the ground control part. The submersible cable transmits the electrical energy on the ground to the pumping motor, and the pumping motor is connected to the pumping pump and the booster pump respectively through the upper and lower couplings. A multi-chamber cyclone coarse separation device for downhole oil production is installed at the bottom of the booster pump to further effectively separate oil and water.
[0026] The downhole oil recovery multi-chamber cyclone coarse separation device includes a housing, the housing has an inner chamber and an outer chamber that surrounds the inner chamber in a ring shape, and the outer diameter of the outer chamber is equal to the outer diameter of the booster pump. The diameter of the inner chamber is relativel...
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The invention discloses a multi-cavity rotational flow type crude separation device for downhole oil recovery. The multi-cavity rotational flow type crude separation device can serve as a part of an electric submersible pump oil recovery device downhole unit to solve the problems of poor separating effect and waste of energy and capital of an existing separating device. The multi-cavity rotational flow type crude separation device can effectively enhance the separating effect, lower the water content and increase the volume ratio of crude oil in lifted fluid. The multi-cavity cyclone type crude separation device comprises a shell. The shell is provided with an inner chamber and an outer chamber, the inner chamber is provided with an upper separating part and a lower separating part, and the lower separating part of the inner chamber and the outer chamber are both in an upper-circle and lower-cone shape. A tangential liquid inlet pipe is arranged on the circular section of the outer chamber, and a tangential water outlet pipe is arranged between the conical section of the outer chamber and the circular section of the lower separating part of the inner chamber; and a tangential oil outlet pipe is arranged on the inner side of a partition wall between the outer chamber and the upper separating part of the inner chamber, the bottom of the inner chamber is provided with a water injection pipe used for injecting separated water into the stratum, and the tangential water outlet pipe, the tangential oil outlet pipe and the water injection pipe are each provided with a one-way valve.
Description
technical field [0001] The invention relates to an oil extraction equipment, in particular to a multi-chamber swirl type coarse separation device for downhole oil extraction. Background technique [0002] In the process of oil extraction, when the formation energy is sufficient, it can self-spray with the help of natural energy. With the consumption of formation energy, formation pressure drops, and the self-spraying period ends, it is necessary for development technicians to choose other driving energies. Artificial lift technology is essential in modern oil extraction and is widely used. In China, water flooding is the main way to displace crude oil in formations, and most oil fields also use water flooding to extract crude oil. The cost of water injection production is low, the oil displacement effect is good, and the comprehensive economic benefits are high. However, with the continuous extraction of crude oil in the formation, the crude oil in the large pores in the ...
Claims
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Login to View More IPC IPC(8): B04C5/04B04C5/081B04C5/103B04C5/12E21B43/38
CPCE21B43/385B04C5/04B04C5/081B04C5/103B04C5/12
Inventor 秦正山王侨张静雅
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY