Deploying 2.19 g/cm 3 /18.28 lb/gal cesium formate brine in HPHT perforating operations brings significant HSE benefits and delivers productive wells with low mechanical skins. The BP-operated Rhum field in the North Sea consists of three subsea development wells tied back to the Bruce platform. The field offered a number of development challenges, including: • High t em per atur e of 1 49°C/300°F , high pr essur e of

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