Semi-submersible platform heave measurement device

Abstract

The invention discloses a heave measuring device for a semi-submersible platform, which includes a rope body, a storage device that drives the rope body to be retracted, and a connecting device that fixes one end of the rope body relative to the seabed. The opposite ends; the middle part of the rope body is also equipped with a pulley assembly for driving and guiding the rope body, and the pulley assembly and the storage device are fixed on the platform; the pulley assembly is also equipped with a detection device for detecting the rotation direction and the number of rotations of the pulley assembly The device and the data processing module are connected in communication with the detection device. The present invention is connected with the rope body through the storage device, and is used together with the detection device and the data processing module arranged on the pulley assembly. When the semi-submersible platform heaves, the rope body drives the pulley assembly to rotate and is detected by the detection device, and the data The processing module converts the data processing of the pulley rotation into the heave direction and heave amplitude of the platform, and records and stores them in real time to ensure the accuracy and real-time performance of the measurement.

Description

technical field [0001] The invention relates to the field of offshore oil and gas field exploration and development, in particular to a semi-submersible platform heave measurement device. Background technique [0002] In the exploration and development of offshore oil and gas fields, especially when it involves sub-deep water and deep water operations, semi-submersible drilling platforms can not only meet the requirements of changing water depths, but also better solve the problems of stability and mobility. Drilling rigs are often the first choice. However, operations at sea are always affected by wind, waves and currents, and the platform is in a state of ups and downs. At present, the commonly used method for measuring the heave amplitude of semi-submersible drilling platforms is: one end of the wire rope is tied to the riser support ring, and the other end of the wire rope is tied to the side of the drill floor gate through a pulley block and a scale for the driller. r...

AI Technical Summary

Problems solved by technology

[0003] In the implementation process, this method of measuring and recording the heave amplitude of the platform has the following problems: 1. The heave amplitude and period measurement records can only be roughly observed by naked eyes; The zero point of the measurement is not at the zero point of the scale, which may easily lead to misjudgment

The above two points lead to the inability to accurately measure and record the heave amplitude and cycle within a period of time when the platform heave is large, and cannot provide effective reference for related operations and risk prevention

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