METHOD FOR CALCULATING EQUIPMENT NUMBER OF SEMI-SUBMERSIBLE DRILLING RIG AND METHOD FOR DECIDING SIZE OF ANCHORING DEVICE USING THE EQUIPMENT NUMBER

摘要

The present invention can be a semisubmersible drilling platform chairman of calculation method and calculate using to a kind of number for determining the design of the method for the size of mooring device. An embodiment according to the present invention, provides a kind of method for calculating the number of the design of semisubmersible drilling platform, obtains the cross-sectional area of a projection of the downside of the waterline of semisubmersible drilling platform; Obtain the cross-sectional area of the projection before the lower part of semisubmersible drilling platform water line; Obtain the cross-sectional area of a projection of the side of main deck and the main deck superstructure of semisubmersible drilling platform; Obtain the cross-sectional area of the projection before the main deck of semi-submersible type and the main deck superstructure of equipment; Main deck and main deck, the protrusion cross-sectional area of the side of the waterline lower projection cross-sectional area of the front surface of the waterline lower projection cross-sectional area of the side of superstructure, some designs are calculated using the cross-sectional area and main deck superstructure of the front surface of protrusion main deck, and main deck, superstructure be a truss structure provide it is a kind of for method calculate number design that, with exception.