Numerical Simulation for Hot Dry Rock Geothermal Well Temperature Field
- 1 China University of Geosciences, Beijing, China
- 2 Oil & Gas Technology Research Institute, Petrochina Changqing Oilfield Company, Xi’an, China
Abstract
Study on temperature distribution simulation during cementing of hot dry rock (HDR) geothermal well is rare. It has important guiding significance to simulate the construction process of temperature distribution of hot dry rock on site construction. Based on numerical simulation of HDR considering heat-fluid-solid coupling, the influence of temperature distribution on well cementing is analyzed when the drilling fluid cycles and reaches stable state, respectively, and when the cement slurry is injected during the cementing process. It is found that the seepage at the well bottom accelerates the flow velocity of wellbore; the stable temperature change is less than the cyclic temperature change; and the upper and lower temperature variation of the stratum is greater when the cement slurry is injected. Therefore, as to cement retarder involved, the influence of temperature variation on concretion should be considered during cementing of the hot dry rock geothermal well.
- Shan, J.L. (2009) Study on Underground Heat Exchanger Performance Test and Model Design of Ground Source Heat Pump System. Chongqing University, Chongqing.
- Wang, M.G. (2007) Ground Source Heat Pump System Engineering Case Analysis. Chongqing University, Chongqing.
- Li, M. (2010) Buried Pipe Ground Source Heat Pump System Regional Adaptability Study [D]. NUST, Nanjing.
- Zhu, Q.Y., Xu, W. and Shen, L. (2010) Technical Code for Ground Source Heat Pump System Revised. Construction Technology, 18, 19-21.
- Xu, W., Zou, Y. and Feng, X.M. (2010) Advancement Safety Operability—National Standard Engineering Technical Code for Ground Source Heat Pump System Compilation Points. Construction Technology, 18, 10-12.
- Peng, L. (2008) Ground Source Heat Pump System Characteristics Research and Simulation Program Development. Chongqing University, Chongqing.
- Yang, F., Li, J. and Ren, X.J. (2012) China Hot Dry Rock Exploration and Exploitation Status. Resources Environment & Engineering, 26, 339-341.
- Lin, W.J., Liu, Z.M., Ma, F., Liu, C.L. and Wang, G.L. (2012) China Land Zone Hot Dry Rock Resource Potential Estimation. Acta Geoscientica Sinica, 33, 807-811.
- Xu, T.F., Zhang, Y.J., Zeng, Z.F. and Bao, X.H. (2012) Enhanced Geothermal System (Hot Dry Rock) Development Technology Progress. Science & Technology Review, 32, 42-45.
- Wang, J.Y., Hu, S.B., Pang, Z.H., et al. (2012) China Land Zone Hot Dry Rock Geothermal Resource Potential Assessment. Science & Technology Review, 32, 25-31.
- Ran, H.Q. and Feng, Q.Z. (2010) Technology Problems Related to China Hot Dry Rock Exploration. Exploration Engineering (Drilling & Tunneling Engineering of Rock and Soil), 37, 17-21.
- Yang, J.L. and Hu, K. (2001) Hot Dry Rock (HDR) Resource Study and Development Technology Overview. Global Geology, 20, 43-51.
- Feng, X.Y. (2012) Study on Utilization of Hot Dry Rock Resource for Heating Technology in Shenyang District. Shenyang Architecture University, Shenyang.
- Gamier, A., Saint-Marc, J., Kermanac, H.Y. and Bois, A. (2008) Singular Methodology to Design Cement Sheath Integrity Exposed to Steam Stimulation. Society of Petroleum Engineers, International Thermal Operations and Heavy Oil Symposium, ITOHOS 2008, Calgary, 20-23 October 2008, 1-15.