STUDY ON MECHANICAL PROPERTY AND DRILLABILITY OF ROCK IN SICHUAN XUJIAHE DEEP RESERVOIR

The Xujiahe deep reservoir in Sichuan basin has some features,such as tight rock,high quartz content,strong abrasive property,poor drillabillity and low ROP etc.,these features have severely restricted the oil and gas exploration and development in western Sichuan area.Through laboratory experiment,the rock mechanical property and drillabillity parameters including compression strength,abrasive property and hardness etc.were obtained.Based on the analysis of the correlation between the rock drillability values and the logging data,the anticipation function of PDC bit drillability analysis was fitted.And through profile curve analysis of the rock mechanical properties,the PDC bit performance suited for the Xujiahe deep reservoir was summarized.All those provided an important theoretical basis and guiding ideology for the personalized design of PDC bit suited for this reservoir.