Offshore drilling platform - with separate shaft resting on joint of tripod from foundation. adjustably located at bottom centre

摘要

A drilling platform for offshore oil and gas wells consists of a foundation plate which is to test at the bottom of the sea and carries three converging pedestal sturts. The latter converge in a support pad. The deck is mounted on a hollow shaft which is located in a central aperture of the foundation plate and rests on a hinge or ball joint of the support pad. This removes any stresses caused by ground swell or currents from the shaft. In case of a sloping sea bottom, the shaft can be aligned to the vertical by adjusting its bottom end in the central aperture of the foundation.