Downcomer of sedimentation oil purification cavity of oil-gas-water treatment equipment

Abstract

The invention relates to the technical field of oil-gas-water treatment of oil fields, in particular to a downcomer for a sedimentation oil purification cavity of oil-gas-water treatment equipment, and aims to improve the dehydration efficiency of crude oil and provide the downcomer for the sedimentation oil purification cavity of the oil-gas-water treatment equipment, which comprises a first tank body and a second tank body, the first tank body is arranged over the second tank body, an oil-gas-water separation cavity is formed in the first tank body, a sedimentation water purification cavity, a sedimentation oil purification cavity and an alternating current-direct current dewatering cavity which are not communicated with one another are formed in the second tank body, the first tank body is connected with the second tank body through the downcomer, and the two ends of the downcomer are communicated with the oil-gas-water separation cavity and the sedimentation oil purification cavity; according to the invention, air floatation ports are uniformly arranged in the annular pipe wall of the downcomer of the sedimentation oil purification cavity, and a demulsifier is sprayed into the downcomer through the small holes, so that emulsified crude oil and the demulsifier are uniformly and fully mixed in the space, and the crude oil dehydration efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of oil-gas-water treatment in an oil field, in particular to a downcomer for a settling and cleaning chamber of oil-gas-water treatment equipment. Background technique [0002] The existing oilfield treatment technology often consumes a lot of energy for the separation of oil, gas and water. Generally, after the treatment of oil, gas and water, the separation of oil, gas and water is not sufficient, and further water treatment in subsequent steps is required, resulting in large energy consumption. Further For the improvement of oil, gas and water treatment equipment, most of the oil, gas and water treatment equipment commonly used in oilfield production is a single-layer structure. A few double-layer devices only separate two independent containers into upper and lower layers through the middle platform. The pipeline is transported to the lower container for reprocessing. The oil-gas-water separation chamber...

AI Technical Summary

Problems solved by technology

[0002] The existing oilfield treatment technology often consumes a lot of energy for the separation of oil, gas and water. Generally, after the treatment of oil, gas and water, the separation of oil, gas and water is not sufficient, and further water treatment in subsequent steps is required, resulting in large energy consumption. Further For the improvement of oil, gas and water treatment equipment, most of the oil, gas and water treatment equipment commonly used in oilfield production is a single-layer structure. A few double-layer devices only separate two independent containers into upper and lower layers through the middle platform. The pipeline is transported to the lower container for reprocessing. The oil-gas-water separation chamber of the upper structure of the device first performs three-phase separation of oil, gas and water, and the crude oil enters the emulsified oil chamber through the overflow weir plate. The crude oil in the chamber is water-in-oil emulsified crude oil. The device is to purify crude oil for direct export, and further dehydration of crude oil is required, but the traditional oil, gas and water treatment device is not enough for effective oil-water separation, and cannot guarantee the purpose of purifying crude oil to be exported directly to the device

Images