Micro flow detection experimental device

Abstract

The invention provides a micro flow detection experiment device. The micro flow detection experiment device comprises a shaft, a drilling fluid circulating pipeline, a water overflow pipeline, a leakage loss pipeline, a gas overflow pipeline and a data acquisition system. The drilling fluid circulating pipeline comprises a first pressure transmitter, a second pressure transmitter, a third pressure transmitter, a first mass flow meter, a second mass flow meter, a first ball valve, a gas-liquid separator, a first water storage tank, a first screw pump and a first non-return valve. The water overflow pipeline comprises a second ball valve, a second non-return valve, a first rotor flow meter, a second screw pump and a second water storage tank. The leakage loss pipeline comprises a third ball valve and a second rotor flow meter. The gas overflow pipeline comprises an air compressor, a fourth ball valve, a pressure gauge, a volume tank, a needle valve, a fifth ball valve, a third rotor flow meter, a sixth ball valve, a first stop valve, a second stop valve, a third non-return valve and a fourth non-return valve. The data acquisition system comprises a computer and an A / D converter. By means of the micro flow detection experiment device, overflow or leakage loss can be accurately and timely judged.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, and more specifically, to an experimental device for micro-flow detection. Background technique [0002] With the development of oil exploration and development towards more complex deep formations, the problem of narrow density safety window encountered in the drilling process is becoming more and more prominent, which seriously restricts the development of oil exploration. Micro-flow controlled pressure drilling technology is an improved managed pressure drilling technology, which combines the advantages of underbalanced drilling and conventional drilling technology. Accurate formation pressure value, timely feedback control to keep the bottom hole pressure within the safety window, effectively ensuring drilling safety. Contents of the invention [0003] In view of the above problems, the purpose of the present invention is to provide an experimental device for micro-flow detectio...

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Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a micro-flow detection experimental device to solve the problem that the on-site micro-flow detection data is difficult to obtain

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