Multilayer uniform-flow-type coalescence oil-water separator and separation method

Abstract

The invention relates to a multilayer uniform-flow-type coalescence oil-water separator and a separation method. The multilayer uniform-flow-type coalescence oil-water separator comprises a center pipe (1), wherein a group of sedimentation cups (2) are mounted on the outer wall of the center pipe (1) from top to bottom, clearances are formed among the sedimentation cups (2), the cup body bottom (5) of each sedimentation cup (2) is in a tile edge shape, a circular space is arranged between the cup body of each sedimentation cup (2) and the center pipe (1), the center pipe (1) corresponding to the circular space is provided with a group of liquid inlet holes (4), and a circular filter container (3) is arranged in a cup cavity of each sedimentation cup (2) below the liquid inlet holes (4) and sleeved on the center pipe (1). The separator effectively solves the problems of difficulty of oil-water separation in an oil field ground and an underhole and improves the oil-water separation efficiency in multiple so as to reduce the number and the size of wastewater treatment devices and prolong the service life of an oil well with high water content. Meanwhile, the water content of producedliquid is reduced, the production cost is saved, and the benefits are improved.

Description

Technical field: [0001] The invention relates to a production liquid treatment device in the field of oil production in oil fields, in particular to a multi-layer iso-flow type coalescing oil-water separator and a separation method. Background technique: [0002] At present, the diameter of oil droplets in the oil field sewage system is very small, and more than 99% of the oil droplets have a diameter of microns. According to Stoke's law, the rising speed of oil droplets in the liquid is proportional to the square of the diameter of the oil droplets, so The separation of oil and water in sewage is relatively more difficult. At present, the traditional oil and water separation method of adding baffles and filtering in oilfields has the problem of unequal flow of baffles and clogging of filters, which leads to unsatisfactory separation efficiency. Although various improvement measures have been taken, the separation efficiency has reached the limit. The inability to meet the ...

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Problems solved by technology

At present, the traditional oil and water separation method of adding baffles and filtering in oilfields has the problem of unequal flow of baffles and clogging of filters, which leads to unsatisfactory separation efficiency. Although various improvement measures have been taken, the separation efficiency has reached the limit. Unable to meet the increasing requirements of sewage treatment volume, resulting in many sewage settling tanks, complicated manifolds and large floor area of ​​sewage treatment station, which is a great constraint on the demand for sewage treatment volume in the future

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