Unmanned high-precision locating system and locating method used for mounting deep sea jacket

Abstract

The invention provides an unmanned high-precision locating system used for mounting a deep sea jacket. The unmanned high-precision locating system is characterized in that the locating system comprises a GPS, a gyrocompass, a computer, a displayer and a total station, the GPS is connected with the computer, the gyrocompass is connected with the computer, the displayer is connected with the computer, and the total station is connected with the computer. The unmanned high-precision locating system has the advantages that according to the technical scheme, inconvenience caused by the mounting characteristic of the deep sea jacket is removed, the jacket is mounted and located more conveniently, and meanwhile the mounting and locating precision of the jacket is improved.

Description

technical field [0001] The invention belongs to the field of marine measurement and positioning, and in particular relates to an unmanned high-precision positioning system for deep-sea jacket installation. Background technique [0002] The jacket installation and positioning of the traditional offshore oil production platform is realized by GPS positioning and gyro compass orientation. It is necessary to install GPS and gyro compass on the jacket during the jacket installation process, and measure and calculate the GPS antenna position in real time during the hoisting process. Although this method is more intuitive, there are still big problems, especially in the installation of deep water jackets, which are mainly reflected in the following aspects: [0003] 1. During the installation of the jacket, the pole of the workboat and the base of the crane block the signal space of the GPS, which will generate about 30%-40% of the signal space and affect the measurement accuracy o...

AI Technical Summary

Problems solved by technology

[0003] 1. During the installation of the jacket, the pole of the workboat and the base of the crane block the signal space of the GPS, which will generate about 30%-40% of the signal space and affect the measurement accuracy of the GPS.

[0004] 2. The installation of the deep water jacket is generally carried out by sliding into the water, and the righting operation is carried out before the final installation, so that there is no space on the top of the jacket to place GPS and gyrocompass

[0005] 3. Since the depth of operation in deep water is generally above 200 meters and the swell is relatively large, it is difficult for personnel and equipment to get on and off the jacket, and there are certain potential safety hazards

Images