Offshore self-elevating drilling platform pile pitching and pile pulling automatic control device and method

Abstract

The invention relates to an offshore self-elevating drilling platform pile pitching and pile pulling automatic control device and method. The offshore self-elevating drilling platform pile pitching and pile pulling automatic control device comprises a displacement sensor, a force sensor, a computer detection control system, a ballast pump switch and a pile washing valve, wherein the displacement sensor and the force sensor are arranged on a chord member of a pile leg, the ballast pump switch is arranged at a ballast pump control system of a ballast tank, the pile washing valve is arranged on a pile shoe and is connected with a pile washing pipeline. The displacement sensor and the force sensor are respectively used for measuring the driving depth of a pile body, the bearing capacity of the pile leg and a pile pulling force and transmitting the measured data in pile pitching and pile pulling processes into a computer detection control system to be processed, whether the bearing capacity of the pile in the pile pitching process is maximum or not, whether pile washing is required in the pile pulling process and whether the pile is completely pulled out are automatically judged, and the ballast pump switch, the pile washing valve and a pile pulling operation control switch are controlled according to the judging result, thus realizing the offshore self-elevating drilling platform pile pitching and pile pulling automatic control.

Description

technical field [0001] The invention relates to an offshore oil exploration and development technology, in particular to an automatic control device and method for pile insertion and extraction of an offshore jack-up drilling platform. Background technique [0002] In the exploration and development of offshore oil, the technology of inserting and pulling piles of drilling platform piles is widely used. At present, the construction process of this technology is controlled manually, the operation is complicated, and the efficiency is low; the bearing capacity of piles is calculated from the ballast force. The pile force is also obtained by calculation and analysis. The pile bearing capacity and pile pullout force were not actually measured during the operation, which caused certain errors and uncertainties to the operation. Therefore, a set of scientific and efficient offshore jack-up drilling platform pile insertion and pile extraction automatic control technology can make t...

AI Technical Summary

Problems solved by technology

[0002] In the exploration and development of offshore oil, the technology of inserting and pulling piles of drilling platform piles is widely used. At present, the construction process of this technology is controlled manually, the operation is complicated, and the efficiency is low; the bearing capacity of piles is calculated from the ballast force. The pile force is also obtained by calculation and analysis. The pile bearing capacity and pile pullout force were not actually measured during the operation, which caused certain errors and uncertainties to the operation.

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