Flow testing device for injection profile of injection well

Abstract

The invention discloses a flow testing device for an injection profile of an injection well. The flow testing device comprises a torque transmission module, a torque conversion module fixedly connected with the torque transmission module, and a data processing module in communication connection with the torque conversion module; and the torque transmission module transmits static torque generatedby fluid impact to the torque conversion module, the torque conversion module converts the static torque into an electrical signal and sends the electrical signal to the data processing module, and the data processing module determines the flow of fluid injected into the injection profile of the injection well according to the electrical signal. In view of the fact that the flow testing device forthe injection profile of the injection well is not provided with a rotating part, the torque transmission module does not rotate due to fixed connection with the torque conversion module, the torqueconversion module collects the static torque through the torque transmission module, then the flow of the fluid of the injection profile is determined according to the static torque, therefore, testing precision and stability can be improved, and especially the small-displacement testing precision and stability are improved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a flow testing device for injection profiles of injection wells. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] In the process of oil and gas field production, the flow analysis of the injection profile of the injection well usually uses turbine flowmeters, ultrasonic flowmeters, electromagnetic flowmeters, etc. Among them, although the circuit structure of the turbine flowmeter is simple, there are disadvantages such as easy damage of the probe, poor environmental adaptability, and large starting displacement. Secondly, ultrasonic flowmeters also have disadvantages such as complex circuit probes, poor environmental adaptability, and poor accuracy in small displace...

AI Technical Summary

Problems solved by technology

Among them, although the turbine flowmeter has a simple circuit structure, it has disadvantages such as easy damage to the probe, poor environmental adaptability, and large starting displacement.

Secondly, ultrasonic flowmeters also have disadvantages such as complex circuit probes, poor environmental adaptability, and poor accuracy in small displacement measurements.

Electromagnetic flowmeters also have the disadvantages of complex circuit structure and poor environmental adaptability

With the change of the test well medium and related displacement and pressure, the flow analysis instruments of the injection profile of the existing injection well have to be tested in terms of test accuracy and test stability, especially in terms of small displacement test accuracy and test stability. improve and perfect

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