The RHADIANT drilling fluid system is formulated to maintain stability throughout the construction and evaluation of ultra-high temperature wells with bottomhole static temperatures (BHST) of greater than 500° F (260° C). The system will maintain stable rheological profiles with all the characteristics needed to deliver cost-effective drilling rates in thermally hostile downhole environments.
Unlike conventional non-aqueous drilling fluids, the RHADIANT fluid system maintains extreme-temperature stability even during prolonged static conditions. Stable rheologies in tandem with ultra-thin and slick filter cake deposits facilitate efficient logging, casing and cementing operations. Additionally, the fluid system effectively protects downhole tools while optimizing operations, enabling accurate perforation placement, optimized completions and high-quality reservoir characterization.
The RHADIANT fluid system minimizes lost circulation, excessive equivalent circulating densities (ECD), stuck pipe, ballooning, well control and other issues typically associated with drilling deep and ultra-high temperature wells. It also resists acid gas contamination and maintains stability during prolonged static periods of tripping, logging and cementing. The low, non-progressive gel structure, excellent high-pressure, high-temperature (HPHT) filtration control and superb filter cake quality of the RHADIANT fluid system combine to deliver a wellbore ideally conditioned for openhole logging and prospect evaluation.
The RHADIANT non-aqueous fluid system is both easy to build and maintain with only three components:
The RHADIANT system performs equally well with various paraffin-base fluid chemistries, providing the flexibility to formulate a system tailored to meet specific downhole and environmental demands.