Drilling rig installation method

Abstract

The invention provides a drilling derrick installing method. The drilling derrick installing method includes the steps that the position S1 of a vertical column structure of a drilling derrick is measured, and the space position X1Y1Z1 of a machine leg flange surface of the drilling derrick is measured; the drilling derrick is simulated and adjusted, and a corresponding well core axis AX and the space position XYZ of the machine leg flange surface are obtained when the verticality V of the drilling derrick is in the best state; the levelness H2 of a drill floor, an axis AX2 of a drilling rotating disc and the space position X2Y2Z2 of a base surface on the drill floor are measured after an upper hull and a lower hull are closured; when the axis AX2 of the drilling rotating disc and the wellcore axis AX are coaxial, the space position XYZ of the machine leg flange surface is compared with the space position X2Y2Z2 of the base surface, the DXY values of a base in the X and Y axial directions and the thickness of a gasket adjusting the DZ value in the Z axial direction are obtained; and the base and the gasket are adjusted according to the DXY and the DZ, and conditions are provided for accurate aligning installation of the machine leg and the base.

Description

technical field [0001] The invention relates to the field of marine engineering equipment installation, in particular to a method for installing a drilling rig. Background technique [0002] With the acceleration of offshore oil development, the number of offshore drilling platforms in my country is increasing. Due to the special operating environment, high safety requirements, and high-precision operation requirements of offshore drilling platforms, there are great differences between offshore platform derricks and land derricks in terms of structure, quality requirements, and construction requirements, and on-site construction is relatively difficult. Big. [0003] In the early days of deep-sea oil drilling, semi-submersible drilling platforms used single drilling tower drilling platform operating systems. Due to the high cost of offshore drilling, the configuration of a drilling platform with double drilling towers can effectively improve the operating efficiency. For ...

AI Technical Summary

Problems solved by technology

see figure 1 and figure 2 , because the derrick rig 1 of the double drilling rig has many legs 2, as many as a dozen legs, the alignment is more difficult

In addition, the derrick legs 2 and the base 3 of the drilling platform are connected by bolts, and the number of bolts is large. It is necessary to ensure that the alignment of the left and right well centers 41 and 42 of the double-drilling derrick meets the requirements, and that the machine legs and the drilling floor are in alignment. The bolt holes of the base 3 are precisely aligned, which is difficult

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