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Semi-active heave compensation device control system

A technology of active compensation and heave compensation, which is applied to drilling equipment, earthwork drilling, drill pipe, etc., and can solve problems not related to the control of heave compensation devices

Active Publication Date: 2017-08-18
CHINA CONSTR STEEL STRUCTURE CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a semi-active heave compensation device control system, which aims to solve the technical problems in the prior art that do not involve the control of heave compensation devices

Method used

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  • Semi-active heave compensation device control system
  • Semi-active heave compensation device control system

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no. 1 example

[0045] Based on the first example, see figure 2 , is a structural schematic diagram of the control system of the semi-active heave compensation device in the second embodiment of the present invention, the control system includes the controller 25 in the first embodiment, the active compensation control component 101, the passive compensation control component 102 and the compensation cylinder component 103, and the content is the same as that described in the first embodiment, and will not be repeated here.

[0046] In the embodiment of the present invention, the active compensation control assembly 101 includes: a hydraulic oil tank 1, a variable displacement pump 3;

[0047] The hydraulic oil tank 1 is connected to the variable pump 3, and the variable pump 3 is connected to the active compensation cylinder 9 and connected to the controller 25;

[0048] The variable pump 3 is used to transmit the hydraulic oil in the hydraulic oil tank 1 to the active compensation cylinde...

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Abstract

The invention discloses a semi-active heavy compensation device control system. The control system comprises a controller, an active-compensation control assembly, a passive-compensation control assembly and a compensating cylinder assembly; the compensating cylinder assembly at least comprises active compensating cylinders and passive compensation cylinders; the controller is connected with the active-compensation control assembly and the passive-compensation control assembly, the active-compensation control assembly is connected with the active compensating cylinders, and the passive-compensation control assembly is connected with the passive compensating cylinders; and the passive-compensation control assembly is used for controlling hydraulic pressure values in the passive compensating cylinders, the controller is used for monitoring control of the passive-compensation control assembly to the hydraulic pressure values of the passive compensating cylinders, and sends a control command to the active-compensation control assembly by utilizing a monitoring result, and the active-compensation control assembly is used for controlling hydraulic pressure values of the active compensating cylinders according to the control command, so that passive compensation can be achieved through the passive-compensation control assembly and the passive compensating cylinders, and auxiliary compensation can be achieved through the active-compensation control assembly and the active compensating cylinders to improve the compensation precision.

Description

technical field [0001] The invention relates to the technical field of deep sea oil drilling equipment, in particular to a semi-active heave compensation device control system. Background technique [0002] Due to the complex environment of the deep-sea drilling ship, under the action of waves, the floating drilling ship will inevitably produce significant heave and swing motions. The periodic up and down movement of the drilling ship with the waves will cause the derrick and hook to The entire suspended drill string moves up and down periodically. This will cause changes in the drilling pressure at the bottom of the well, which will easily lead to fatigue damage of the drill pipe, reduce the life of the drill bit and the drill pipe, and seriously affect the drilling efficiency. Therefore, in order to ensure the normal operation of the drilling ship, it is necessary to take appropriate compensation measures for the heave movement of the drilling ship. [0003] However, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/09
CPCE21B19/09
Inventor 李任戈彭绍源戴立先胡哲
Owner CHINA CONSTR STEEL STRUCTURE CORP LTD
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