Design and simulation of wellbore pressure sensors layout scheme of intelligent drilling and completion experiment system

ABSTRACT: Unconventional oil and gas reservoirs are characterized by factors such as deep burial, high rock strength, and significant geostress differences, which result in slow drilling speeds, high fracturing difficulty, and other issues, requiring urgent solutions. Currently, full-scale drilling and completion simulation wellbores both domestically and internationally are still incomplete in detecting real operational parameters, making it difficult to effectively support the development of new technologies and equipment with key test conclusions. This study designs an intelligent drilling and completion simulation experimental system and focuses on the structural design and sensor layout for the high-pressure simulated wellbore. Through hydraulic simulation, the pressure gradient distribution and pressure wave propagation patterns of the simulated wellbore are analyzed. Based on the simulation results, it was determined that the installation accuracy of the pressure sensors should not be lower than 0.01%, and the maximum installation distance should be 2.5 m.