Abstract
This paper presents a kind of thermal flow meter designed to measure downhole fluid flow at production profile logging. A computational fluid dynamics model is established to study the variation of temperature field in Downhole Thermal Flow Meter with medium and input power. The relation curve between heating power and fluid velocity and heating time is determined. According to the theoretical research, the experimental prototype of downhole thermal flow meter is designed and manufactured, and the dynamic experimental research is carried out on the multiphase flow simulation experimental device. The results show that when the power of the heating wire is constant, the temperature of the liquid around the heating wire decreases with the increase of the flow rate, and the resolution of the instrument is obvious when the flow rate is less than 20 m3/d. When the flow rate is constant, the greater the power of the heating wire, the more obvious the response characteristics of the instrument. It has a good response in the whole single-phase oil and single-phase water environment. The research of theoretical and dynamic experimental shows that it is feasible to use downhole thermal flow meter to measure downhole flow. This method will provide a new idea for the measurement of flow in production profile.
Highlights
There are many methods to measure the downhole oil-water flow at production profile well, and the accurate measurement of the flow has become an urgent problem
W and inlet flowand rates as 1 the heating time of the heating wireas can be the set as s, because thethe power is fixed
A new method Downhole Thermal Flow Meter (DTFM) is proposed for measure the flow rate of liquid
Summary
There are many methods to measure the downhole oil-water flow at production profile well, and the accurate measurement of the flow has become an urgent problem. The fluid flowing in the well is the object of production logging flow measurement. There are no moving parts, no contact and other flow velocity measurement technology has been greatly developed. Electronic and digital flow measurement is the development trend of the field. The accurate measurement of flow is a complex problem, which is determined by the nature of flow measurement. There are many kinds of substances that flow. They can be granular rigid bodies, liquids, gases or a combination of them. The diversity of fluid characteristic parameters determines the diversity of its measurement methods. Turbine flowmeter [1,2,3,4,5]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
