Drilling technology optimization and application for geothermal directional wells in Tianjin

Abstract:

Geothermal resource is a kind of clean energy. It plays an important role in promoting energy structure transformation and achieving carbon peak and carbon neutrality. With accelerating development of geothermal resources， geothermal directional wells have been increasing year by year. Directional drilling technology has become more and more important in developing and utilizing geothermal resources. In order to improve geothermal directional drilling speed and efficiency， paper analyzed the technical issues of geothermal directional drilling technology and the wellbore structures of geothermal directional wells in Tianjin. Geothermal directional drilling technology optimization includes anti-deflection technology optimization of vertical well section， choice of KOP， optimization of BHA and parameters， improved drilling fluid system. Application of geothermal directional drilling technology optimization can ensure better well trajectory and improve directional efficiency in 6 wells in Tianjin.

Key words:geothermal directional wells;BHA;optimal selection of KOP;well trajectory;technology optimization