Axial-flow type cyclone separation and water ring lubrication resistance reduction device
A technology of swirl separation and drag reduction device, which is applied in swirl devices, devices whose axial direction can be reversed, and production fluids, etc., can solve the problems of reduced oil production efficiency, reduce processing costs, improve production and The effect of improving the transmission efficiency and improving the oil-liquid separation effect
Active Publication Date: 2021-05-28
XI AN JIAOTONG UNIV
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Problems solved by technology
As the development of heavy oil fields enters the middle and late stages, the water content of the produced fluid increases gradually, resulting in a significant decrease in oil recovery efficiency
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[0026] The present invention is described in further detail below in conjunction with accompanying drawing:
[0027] like figure 1 As shown, an axial-flow swirl separation and water ring lubrication drag reduction device includes a swirl pipe, and the swirl pipe is sequentially composed of a liquid inlet spiral pipe section 2, a swirl section, and a discharge pipe section 16 from one end to the other end, and the liquid inlet There is a spiral cavity in the spiral pipe section 2, and one end of the liquid inlet spiral pipe section 2 is the liquid inlet 1, and the other end is connected with one end of the swirl section. The pipe body 6 forms a separation chamber between the swirl section and the separation pipe body 6. The separation pipe body 6 is provided with a drain pipe 9 connected to the separation chamber. The other end of the section is connected with a double-sided liquid discharge pipe 16, and the double-sided liquid discharge pipe 16 includes an inner layer pipe wa...
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The invention discloses an axial-flow type cyclone separation and water ring lubrication resistance reduction device. The device is of a cyclone pipe structure sequentially comprising a liquid inlet spiral pipe section, a cyclone section and a discharge pipe section from one end to the other end, a spiral cavity is formed in the liquid inlet spiral pipe section, and the cyclone section structure with a gradually-contracted cavity inside is adopted. Oil-water separation and pipeline interface lubrication and resistance reduction can be achieved, after crude oil produced liquid enters an axial inlet cyclone with a spiral flow channel, linear flow can be changed into low-speed rotating flow along the spiral flow channel, collision between fluid and a wall face can be greatly reduced, the energy loss is further reduced, excess water phases in the crude oil produced liquid, especially high-water-content oil well produced liquid are separated through a separation cavity and a drainage pipe section, the cost of crude oil production and transportation and subsequent crude oil treatment can be effectively reduced, the other end of the cyclone section is communicated with double-side drainage pipes, and oil liquid can be mixed after being separated and accelerated in different flow channels by adopting a double-layer drainage pipe structure. The oil-liquid separation effect is effectively improved, and the production and conveying efficiency of heavy crude oil is greatly improved.
Description
technical field [0001] The invention belongs to the field of oil wellbore lifting and deep-water standpipe transportation energy saving and drag reduction, and in particular relates to an axial flow type swirl separation and water ring lubrication drag reduction device. Background technique [0002] With the depletion of conventional oil resources, unconventional heavy crude oil will be a strategic replacement resource for global oil and gas development in the 21st century. The world's heavy crude oil and oil sand reserves are more than twice that of conventional crude oil, accounting for 70% of the world's remaining reserves. my country's heavy oil resources are also very rich, with reserves of about 25 billion tons, and its output only accounts for about 12% of the total crude oil output. The development potential is huge . [0003] However, the high viscosity of heavy oil and its severe adhesion on the pipe wall have brought great difficulties to the production and transp...
Claims
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IPC IPC(8): B04C5/081B04C5/103B04C5/12B04C5/14E21B43/34
CPCB04C5/081B04C5/103B04C5/12B04C5/14E21B43/34
Inventor 郭烈锦孙杰敬加强付吉强田娇赵向远
Owner XI AN JIAOTONG UNIV