Cross-linked polymer-based mud pill applied in MPD operations ///

At Kvitebjørn Field, in the Norwegian sector of the North Sea, a Fluid Pressure Transmission Pill (FPTP) was developed for logging and completion operations in a Managed Pressure Drilling (MPD) situation. MPD operations have gained popularity for development of modern HPHT gas fields, yet batch drilling entire fields is a high-risk and high-cost approach. Due to rapid pressure drop commonly observed in many gas reservoirs after production initiates, the pressure regimes for drilling the remaining wells make the project more challenging. A cross-linked polymer pill was developed to isolate high-density drilling fluid in the well’s upper section from lighter fluid in the deeper section.

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