As of July 20th, the pipeline oil and gas water separation technology was continuously applied for 10 months in Jiqing 13 of Changqing Oilfield No. 5 Oil Production Plant, marking the successful operation of the first pipeline oil and gas water separation device in China.
Changqing Oilfield has more than 100,000 oil and gas wells, thousands of oil and gas well stations, and more than 100,000 kilometers of oil and gas pipelines. Changqing Oilfield has long-term high water-bearing mining, and the crude oil in the mining contains gas, sand and other media. Therefore, it must be Take measures to separate water, gas, sand, etc. in the liquid. In the oilfield gathering and transportation process, the pressure vessel becomes an essential device for multiphase separation of oil and gas water sand. However, pressure vessels have certain safety risks.
In the investigation, Changqing Oilfield found that the pipeline components developed by the Chinese Academy of Sciences's offshore platform replaced the pressure vessel, and carried out multiphase separation of oil and gas, and applied T-tube multi-branch separation, liquid-solid cyclone separation, liquid-liquid vertical rotation. Flow separation, micro-aperture bubble oily sewage treatment and other patented technologies not only reduce the safety risk of pressure vessel operation, but also simplify the fluid processing process and improve the processing efficiency.
In 2016, Changqing Oilfield Equipment Management Office took the lead, and together with the Institute of Mechanics of the Chinese Academy of Sciences, set up a pipeline separation technology verification project research group to jointly develop a new oil and gas water multi-sand separation device technology suitable for working conditions in Changqing Oilfield, and successively in oil production. The third plant of South Plant has 12 turns, and the No. 5 Plant of the No. 5 Oil Production Plant has conducted industrial tests.
The reporter saw at the scene of the Ji 13 station of the No. 5 Oil Production Plant that the separation time of oil and gas water sand was reduced from the traditional 40 minutes to 60 minutes to 3 minutes by using the new device, and the safety factor was greatly improved.
'The application of the pipeline oil-gas water separation device makes the large-scale gathering and transportation equipment under the traditional conditions simplified. Especially by separating the oil and water in advance, the separated water is reinjected on the spot, reducing the original large amount of mixed liquid heating, conveying and pulling. And other expenses. 'Zhengsheng Hong, director of the equipment management department of Changqing Oilfield, said, 'According to the current production scale of Changqing Oilfield, only the liquid freight is saved at more than 50 million yuan per year.'
