دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: special segmented weights attached to the guy wires of a guyed compliant platform that keep the guy wires taut as the platform jacket moves with the waves and current of the water. As tension on a guy wire is lessened, one or more segments of the weight drop to the seafloor and re-establish tension on the wire. As tension increases on a guy wire, the tension pulls one or more segments off the seafloor so that the wire is not over stressed.

n: an offshore platform that is designed to flex with wind and waves. Two types are the guyed-tower platform rig and the compliant piled tower.

n: (MOPU) a movable, reusable structure, such as a converted jack- up drilling rig, from which offshore wells are produced. The main advantage over a conventional fixed or compliant platform is that MOPUs are less expensive.

n: an immobile offshore structure from which development wells are drilled and produced. Platform rigs may be built of steel or concrete and may be rigid or compliant. Rigid platform rigs, which rest on the seafloor, are the caisson- type platform, the concrete gravity platform, and the steeljacket platform. Compliant platform rigs, which are used in deeper waters and yield to water and wind movements, are the guyedtower plat- form, the tension-leg platform, and the compliant piled tower platform.