Online three-stage eddy flow dehydration device of submarine pipeline
A technology for dehydration of submarine pipelines and cyclones, which is applied in the direction of cyclone devices, devices in which the axial direction of the cyclone can be reversed, separation methods, etc.
Active Publication Date: 2017-01-18
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology
The compact oil-water separator currently used on offshore platforms usually adopts the parallel technology of hydrocyclone and single cyclone tube to reduce the space occupied by the separation equipment on the platform deck, such as the dehydration equipment developed by FMC Technologies in the United States. The platform's compact dehydration technology research is still in the experimental research stage
In addition, research on oil-gas-water separation equipment for underwater production systems is still in its infancy and testing at home and abroad.
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[0034] exist figure 1 Among them, the submarine pipeline online three-stage cyclone dehydration device is composed of the first-stage dehydrator 1, the second-stage dehydrator 3, the third-stage dehydrator 4 and the crude oil booster 2. The first-stage dehydration cylinder of the first-stage dehydrator 1 is connected to the wellhead underwater manifold through a jumper pipe and flange, and the third-stage drain pipe of the third-stage dehydrator 4 is connected to the water delivery manifold through a flange At the same time, the outgoing sea pipe of the crude oil booster 2 is connected with the seabed pipe through flanges, so that the dehydration device is organically combined with the underwater manifold and the seabed pipe, and the online installation of the seabed pipe can be realized. After the second-stage dehydrator 3 is connected with the first-stage dehydrator 1 and the third-stage dehydrator 4 respectively, the axes of the three are perpendicular to each other and pre...
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The invention provides an online three-stage eddy flow dehydration device of a submarine pipeline. The online three-stage eddy flow dehydration device is applied to efficient dehydration of a water-containing well flow of an underwater production system. The dehydration device organically combines with an underwater manifold and the submarine pipeline to achieve online installation and operation of the submarine pipeline, and crude oil and production sewage integrated treatment and efficient oil-gas-water separation are achieved through an underwater three-stage eddy flow dehydration system and the device. A primary dehydrator is of a columnar single-cylinder structure, primary axial high-speed eddy flow crude oil dehydration treatment is carried out under the centrifugal separation effect in an eddy cone field, a secondary dehydrator is of a tubular short-three-cylinder structure, quick treatment of secondary axial layered eddy flow sewage is carried out according to an eddy flow field, a tertiary dehydrator is of a squirrel-cage long-cylinder structure, deep treatment of tertiary squirrel-cage parallel connection eddy flow sewage is carried out according to an eddy flow field, a crude oil supercharger pressurizes oil subjected to all stages of dehydration treatment to reach a same high pressure value, and then the oil converges to the same outward transportation seawater pipe for centralized outward transportation.
Description
technical field [0001] The invention relates to a device for direct dehydration and external transportation of water-bearing wells in the field of ocean engineering, in particular to a three-stage cyclone high-efficiency dehydration device for underwater submarine pipelines. Background technique [0002] At present, the configuration of typical oil and gas gathering and transportation facilities in offshore oilfields at home and abroad is "high-pressure well flow→standpipe→platform manifold→three-phase separator→secondary heater→secondary separator→electrodeboosting pump→electrical deheating dehydrator→electric dehydrator→export pump→submarine pipeline”, in which, the whole oil and gas treatment technology mainly adopts conventional dehydration equipment and the treatment efficiency is low; in addition, high-pressure well flow is transported and After the dehydration and degassing of the treatment systems at all levels, the additional loss of electric energy and heat energy ...
Claims
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IPC IPC(8): B04C5/24B04C5/26B04C7/00B01D17/038
CPCB01D17/0217B04C5/24B04C5/26B04C7/00
Inventor 刘新福谭继文刘春花张中慧江京亮石云
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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