Underground layering slim tube flowmeter and flow testing method thereof

Abstract

The invention discloses an underground layering slim tube flowmeter and a flow testing method thereof. The underground layering slim tube flowmeter comprises a connecting body and a plurality of slim tube flowmeters arranged on the connecting body, the connecting body is used for connecting pipelines of adjacent layers, one end of the connecting body is provided with a first main flow channel in the axial direction, a plurality of branch flow channels corresponding to the slim tube flow meters are formed in the inner wall of the first main flow channel, the branch flow channels are communicated with inlets of the corresponding slim tube flow meters, a second main flow channel is formed in the other end of the connecting body, and overflowing openings are formed in the side wall of the second main flow channel. The overflowing openings are communicated with outlets of the corresponding thin tube flow meters, and fluid sequentially passes through the first main flow channel, the branch flow channels, the thin tube flow meters and the second main flow channel to complete flow testing. According to the invention, the layering test of underground flow can be realized under the condition that only one pipeline is inserted, and the test work amount and the input cost can be obviously reduced.

Description

Technical field[0001]The present invention relates to the field of flow testing, and in particular, to a downhole layer tubing and its flow test method thereof.Background technique[0002]Traffic is an extremely important parameter in the process of oil mining. In daily related oil production, the accuracy and reliability of flow measurement is related to the yield of oilfield, which is very important for the improvement of oilwater well development effects. With the in-depth of oil field development, the injection well and the number of wells increased year by year, and the difficulty of its hierarchical test has also increased year by year, and the test workload is significantly improved. The conventional test method is to be inserted on the fitting of the flowmeter, depending on the amount of water injection, the corresponding number of tubes are needed, and each tube is connected to the corresponding flow meter on the surface, thereby implementing Test, but the test method not onl...

AI Technical Summary

Problems solved by technology

The traditional test method is that the flowmeter is installed on the pipe fittings on the ground surface. According to the difference in the water injection volume of each layer, a corresponding number of pipes need to be inserted down, and each pipe is connected to the corresponding pipe fittings equipped with flowmeters on the ground surface, so as to realize Layered testing, but this testing method not only requires a large amount of engineering, but also consumes a lot of manpower and material resources, and the input cost is high, which will seriously affect the development effect of injection wells and production wells

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