STANDARDIZATION METHOD FOR SETTING REFERENCE POINT FOR LOADING ON THE SEA AFTER CONSTRUCTING DRILLING RIG AT HEAVY ZONE

摘要

PURPOSE: A standardization method for setting a reference point of loading components in a drilling rig on the sea is provided to always obtain the same results regardless of measurers. CONSTITUTION: A standardization method for setting a reference point of loading components in a drilling rig is as follows: a step of obtaining data by implementing alignment tests with instruments in a state that a body of the drilling rig is completed(S20); a step of setting the reference point based on an existing reference point or current optimal conditions(S40); a step of setting the coordinate of an auxiliary point according to a standard loading process(S60); a step of setting the coordinate of the auxiliary point as the reference point(S80); a step of maintaining even keel by ballasting in a floated state(S100); and a step of installing upper blocks and fittings based on a secondary auxiliary point of a moonpool after completely loading entire structures(S140). [Reference numerals] (S100) Maintain even keel by blasting in a state of floating on the sea; (S120) Work on all blocks, equipment, and other fittings on the sea using a three-dimensional measuring instrument; (S140) Determine a second auxiliary point on a moon pool and progress with work on fittings after completely loading of the whole structure; (S20) Obtain data with an alignment test after completion in land; (S40) Set a '0(zero)' reference point in an optimum condition based on an existing reference point or a current well center; (S60) Set a coordinate of an auxiliary point according to a standard process; (S80) Set the auxiliary point coordinate as reference