Mechanism of heat transfer for gas-liquid two-phase flow in deep drilling

Mechanism of heat transfer for gas-liquid two-phase flow in deep drilling

Richeng Zhong Zhenbin Peng Haidong Jiang 

School of Geoscience and Information Physics, Central South University, Changsha, Hunan, 410083, China

Institute of Resources and Environmental Engineering, Guizhou University of Technology, Guiyang, 585003, China

Corresponding Author Email:
8 January 2018
10 June 2018
30 September 2018
| Citation



Drilling fluid cooling technology is one of the key techniques of drilling technology. In order to study the influence of mechanism of drilling fluid on temperature and pressure, especially on thermophysical parameters and rheological properties, as well as the heat transfer mechanism between bubbles and liquid flow inside and outside the liquid film by test, simulation and theoretical research. Firstly, the test on thermophysical parameters of 10 kinds of drilling fluids at 7 different temperatures and 3 different pressure were analyzed, which would provide the key parameters for the establishment of downhole gas-liquid two-phase model. Then, study on rheology of cement slurry under high temperature and high pressure, and its heat transfer equations were derived. The results showed that the specific heat of mud decreases with the increase of density, and the thermal conductivity increases with the increase of density, almost linearly. Besides, gas is the main factor affecting heat transfer inside the well.


drilling fluid, density, rheology, heat transfer mechanism, gas-liquid two-phase

1. Introduction
2. Study on the Thermal Properties of Mud
3. Simulation Test and Modeling of Slurry Rheology under High Temperature and High Pressure
4. Study on Heat Transfer Mechanism of Two-Phase Flow in High Temperature and High-Pressure Drilling Mud
5. Conclusion

This research was funded by the special projects for promoting the development of big data of Guizhou Institute of Technology


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