Ultra-HP/HT Drilling-Fluid Design for Frontier Deep Gas Exploration

摘要

This paper discusses the laboratory evaluation of potential high-pressure/high-temperature (HP/HT) drilling-fluid designs considered for a deep gas exploration well in Malaysia. Laboratory testing included evaluation of rheological properties, fluid loss, sag, and electrical stability, along with chemical analysis. Properties were measured before and after extended dynamic and static aging, up to the expected bottomhole temperature (BHT) and bottomhole pressure. Formulations were adjusted and retested until acceptable results were achieved.