Dagang Oil Extraction Research Institute Obtains Patents on Two New Types of Pumps
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At present, the conventional oil extraction pipe string in Dagang Oilfield consists of ordinary oil pump and oil drainer, but there are certain defects in the function of the pipe string. Ordinary oil pump can't carry out positive circulation and well flushing. Inspecting the pump flushing sand can only put all the original well string in order to run the sanding operation under the oil pipe. It takes time and labor. However, oil drains on the column are often opened by error due to performance and quality problems, resulting in unnecessary losses and investment in oil field production and workover operations.
To this end, the Dagang Oil Production Technology Research Institute has developed two new types of oil extraction pipe columns. A two-way pumping tubing string, whose main supporting tool is a two-way pumping pump, has a positive circulation washing function compared with the ordinary pumping tubing column, and can also deepen the original well column for positive flushing, and can realize the string. No oil skimmer installed to achieve the effect of workover oil drainage. The other type is double-van der pumping tubing. The main supporting tool is double-van der pump. Compared with ordinary pump, the pump can not only prevent sand plugging, wax plugging and air lock, but also has the advantages of large oil inlet area, positive and negative well flushing, longer pump inspection period, and improved pump efficiency.