SYSTEM FOR PREDICTIVE FAILURE ANALYSIS OF OFFSHORE PLATFORM PLACEMENT AND SAFE RECOVERY FROM RAPID LEG PENETRATION INCIDENTS

摘要

A tool to provide predictive analysis and component stresses of an offshore platform supported by platform support members as the offshore platform is being placed within a body of water. The tool comprising a computer processor, computer data storage, an input means, and an output means, which can all be in communication with the computer processor. The tool comprises a rig model library comprising at least one individual rig model, wherein each of the individual rig models comprises a finite element analysis of a specific offshore platform and a database comprising calculated component stress values for each of a plurality of offshore platform components, wherein each of the calculated component stress values incorporate the finite element analysis of the specific offshore platform and a plurality of predictive parameters for predicting mechanical stresses and analyzing failure potential for rig placement.

主权项

1. A tool to provide predictive analysis and component stresses of an offshore platform supported by at least three platform support members as the offshore platform is being placed within a body of water, wherein at least a portion of the platform support members penetrate soil, and further wherein the tool comprises:
a. a computer processor; b. a computer data storage in communication with the computer processor; c. an input means in communication with the computer processor; d. an output means in communication with the computer processor; e. a rig model library within the computer data storage comprising at least one individual rig model, wherein each of the individual rig models comprises a finite element analysis of a specific offshore platform; f. a database stored within the computer data storage comprising a plurality of calculated component stress values for each of a plurality of offshore platform components, wherein each of the calculated component stress values incorporate the finite element analysis of the specific offshore platform and a plurality of predictive parameters comprising:
(i) an offshore platform height parameter, wherein the offshore platform height parameter is a measured height of the offshore platform above a defined water level;(ii) a rapid penetration parameter;(iii) a longitudinal center of gravity;(iv) a vertical center of gravity;(v) a transverse center of gravity;(vi) a platform weight; and(vii) a water depth; and g. computer instructions within the computer data storage instructing the computer processor to:
(i) receive each predictive parameter from the input means;(ii) determine an output component stress value for each offshore platform component by:
(1) exactly matching the plurality of predictive parameters to the plurality of calculated component stress values; or(2) calculating the plurality of component stress values using a plurality of component stress values for other parameters similar to the plurality of predictive parameters; and(iii) transmit the output component stress value to the output means.