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Intelligent drilling control system and method for petroleum drilling machine

A control system and intelligent technology, applied in the automatic control system of drilling, drilling equipment, earthwork drilling, etc., can solve problems such as difficulty in establishing mathematical models, and achieve the effects of reducing drill bit wear, reducing labor intensity, and improving accuracy

Active Publication Date: 2013-01-02
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

However, since the drilling process is affected by parameters such as geological conditions, bit wear and mud properties, it is difficult to establish an accurate mathematical model

Method used

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  • Intelligent drilling control system and method for petroleum drilling machine
  • Intelligent drilling control system and method for petroleum drilling machine
  • Intelligent drilling control system and method for petroleum drilling machine

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0025] During the drilling process of oil drilling rigs, due to the diversity of rock mass structures downhole, when the front end of the drill bit touches rocks of different properties, excessive drilling pressure and drilling speed may cause accidents, such as broken drill pipes, drill bits, and drill bits. Damage, etc.; too low drilling pressure, drilling speed and torque make drilling efficiency very low. Therefore, in a certain formation and a certain depth, proper drilling pressure, drilling speed and torque are very beneficial to drilling, which can not only improve drilling efficiency, but also help reduce drill bit wear.

[0026] When the oil drilling rig comes into contact with rocks of different properties, if ...

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Abstract

The invention discloses an intelligent drilling control system and a method for a petroleum drilling machine. The intelligent drilling control system comprises a drilling driving module, a drilling detection module and a drilling control module. The intelligent control method is a fuzzy control algorithm with a parameter self-adjusting capability; the fuzzy control algorithm consists of two control loops, wherein an inner loop is drilling speed control and the outer loop is drilling pressure control; each control loop comprises a fuzzy controller unit, a performance evaluating unit, a parameter correcting unit and a decision unit; and according to each loop, the intelligent control over the drilling pressure and the drilling speed of the petroleum drilling machine can be realized by self-adaptively adjusting the parameters of the fuzzy controller and improving the performance of the fuzzy controller. According to the intelligent drilling control system and the method disclosed by the invention, the labor intensity of workers in the drilling process of the petroleum drilling machine can be reduced, the track precision of a well hole of a drilling well can be improved, the wear to a drill bit is reduced and the drilling speed is increased.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a control system and a control method of an oil drilling rig used for oil and gas drilling. Background technique [0002] Drilling is one of the main methods of underground oil extraction. At present, the drilling process of drilling mainly adopts the method of manually operating the drilling rig: the driller adjusts the drilling rig parameters according to the thrust and rotation speed of the drill bit recommended in the drilling rig operation manual, and according to the force feeling of the drilling process. When the drilling rig is drilling, there is not only wet friction between the drill bit of the drilling tool and the rock formation, but also dry friction and semi-dry friction. Manual operation can easily lead to uneven lowering of the upper end of the drilling tool, resulting in uneven load on the drill bit; in addition, the difference in operating technology will a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B44/00
Inventor 苏建华乔红戴相富王鹏郑碎武王敏
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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