Provide emulsion stability in all nonaqueous drilling fluid systems and at all temperatures, even ultrahigh-temperature wells.
The RHADIANT oil-based ultrahigh-temperature drilling fluid system is formulated to maintain stability throughout the construction and evaluation of ultrahigh temperature wells with bottomhole static temperatures (BHST) of greater than 500 degF [260 degC]. The system maintains stable rheological profiles with all the characteristics needed to deliver cost-effective drilling rates in thermally hostile downhole environments.
Unlike conventional nonaqueous drilling fluids, the RHADIANT fluid system maintains extreme-temperature stability even during prolonged static conditions. Stable rheologies in tandem with ultrathin and slick filtercake 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 ultrahigh temperature wells. It also resists acid gas contamination and maintains stability during prolonged static periods of tripping, logging, and cementing. The low, nonprogressive gel structure, excellent high-pressure, high-temperature (HPHT) filtration control and superb filtercake quality of the RHADIANT fluid system combine to deliver a wellbore ideally conditioned for openhole logging and prospect evaluation.
The RHADIANT nonaqueous fluid system is both easy to build and maintain with only three components:
The RHADIANT system performs equally well with various paraffin-based fluid chemistries, providing the flexibility to formulate a system tailored to meet specific downhole and environmental demands.
Filtration control additive eliminates mud conditioning trips between logging runs.
Maintain extreme-temperature stability with ultra-high temperature nonaqueous drilling fluid—even during prolonged static conditions.
RHADIANT fluid, with Sarapar-147 base fluid, confirmed the expected performance, delivered excellent filtration control and filtercake quality with stable rheological properties.
Delivered excellent HPHT fluid loss control and filter cake quality with excellent rheological properties in the 6-1/8” interval.