Hydrocyclone Parallel Offshore Large Flow Downhole Oil-Water Separator
A technology of oil-water separator and cyclone, which is used in the production of fluid, wellbore/well components, earth-moving drilling, etc., can solve the problem of reducing the separation efficiency and processing capacity of the system, the limitation of the number of cyclones, and the limited downhole space, etc. problems, to achieve the effect of increasing the number, increasing the processing power, and saving space
Inactive Publication Date: 2017-02-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
[0004] At present, the downhole oil-water separation device with cyclones in parallel has appeared in domestic patents, but the downhole space is limited. The cylindrical ends of this parallel cyclone group are all on the same plane, resulting in a large number of downhole cyclones. Due to the limitation, the downhole space is wasted to a great extent, and the separation efficiency and processing capacity of the system are reduced.
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[0034] Below in conjunction with accompanying drawing and example the present invention will be further described:
[0035] Such as Figure 1-17 As shown, a hydrocyclone parallel-connected offshore large-flow downhole oil-water separator consists of an oil pipeline 1, an electric pump unit 2, an intersection flow channel joint 3, an intersection flow channel 4, a double-cone cyclone A5, Middle overflow lifting oil pipe 6, double cone cyclone B7, lower overflow lifting oil pipe 8, double cone cyclone C9, production layer 10, water injection layer 11, overflow confluence plate 12, upper diversion plate 13, Upper shell 14, upper middle connection shell 15, middle shell 16, lower support plate 17, lower shell 18, positioning support plate 19, positioning support tube 20, upper support plate 21, middle overflow confluence plate 22, middle Diverter plate 23, middle support plate 24, underflow confluence plate 25, lower diverter plate 26, double-cone cyclone D27, characterized in th...
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The invention relates to downhole oil-water separation and same-well production and injection equipment in the technical field of offshore oilfield exploitation, in particular to a cyclone parallel type offshore high-flow downhole oil-water separator, which is suitable for exploiting offshore high-flow oil wells. Three layers, each layer is arranged in parallel. The invention has the following advantages: the use of small flow cyclones in parallel greatly improves the separation efficiency of the device; it combines the limited space downhole with the structural characteristics of a single cyclone, The end and the cylindrical end of the second-stage cyclone are in the same plane, the tail pipe of the first and second-stage cyclones and the cylindrical end of the third-stage cyclone are in the same plane, so arranged to increase the small flow The number of cyclones increases the processing capacity of the whole set of devices; the whole set of devices is nested together layer by layer, with higher reliability, stable structure, high safety performance and space saving.
Description
technical field [0001] The invention relates to downhole oil-water separation and well production and injection equipment in the technical field of offshore oilfield exploitation, in particular to a large-flow downhole oil-water separator for offshore cyclone parallel connection. Background technique [0002] With the development of offshore oilfields entering a period of high water cut, coupled with the strategy of "rare wells and high production" adopted in the early stage of exploitation, the contradiction between production cost and crude oil production in the production process of offshore oilfields has become increasingly aggravated. In order to keep the daily oil production of offshore oilfields unchanged, the only way to increase the production volume is to lift all the production fluids to the offshore platform for treatment, and then re-inject, which will greatly increase the water treatment facilities and lifting process. The burden and energy consumption are also...
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IPC IPC(8): E21B43/38
Inventor 李增亮董祥伟冯龙康强赵传伟孟凡林张琦孙召成范春永胥曰强
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)