Study on Drillability of Igneous Rock Reservoirs of Buried Hills in Huizhou Sag, Pearl River Mouth Basin

Aiming at the problems of slow drilling speed and less footage of igneous rock reservoirs of buried hills in Huizhou Sag of Pearl River Mouth Basin, through the research and analysis of lithology, rock mechanical characteristics, reservoir physical properties and engineering parameters, the bit suitable for the study area is selected from technical and economic aspects, so as to improve the drilling speed and reduce the cost. The drillability of formation has a great relationship with lithology and rock mechanics parameters, but has little relationship with reservoir physical properties. It provides a basis for improving the quality and efficiency of subsequent large-scale development wells drilling in the study area.