Electromagnetic-wave two-way-transmission rotary guiding system

Abstract

The invention discloses an electromagnetic-wave two-way-transmission rotary guiding system. The electromagnetic-wave two-way-transmission rotary guiding system comprises a ground control system and an underground control system. The ground control system comprises a computer control system, an electromagnetic wave pulse excitation device and an electromagnetic wave signal receiving and analyzing device, wherein the electromagnetic wave pulse excitation device and the electromagnetic wave signal receiving and analyzing device are connected with the computer control system. The underground control system comprises a tool control and data processing system, an electromagnetic wave signal detecting, analyzing and transmitting device, a fixed point static data measuring device and a rotary guiding motion control mechanism, wherein the electromagnetic wave signal detecting, analyzing and transmitting device, the fixed point static data measuring device and the rotary guiding motion control mechanism are connected with the tool control and data processing system. The ground control system is in communication with the electromagnetic wave signal detecting, analyzing and transmitting device of the underground control system through the electromagnetic wave pulse excitation device and the electromagnetic wave signal receiving and analyzing device. According to the electromagnetic-wave two-way-transmission rotary guiding system, the two-way electromagnetic wave transmitting technology is combined with the rotary guiding motion mechanism, an electromagnetic wave signal source is positioned through electromagnetic waves, guiding drilling is carried out on continuous points, and while-drilling measured data collecting and automatic guiding drilling are achieved.

Description

technical field [0001] The invention relates to oil drilling, in particular to an electromagnetic wave two-way transmission rotary steering system. Background technique [0002] Rotary steerable drilling system is also called closed-loop rotary steerable drilling system. This system is a cutting-edge automatic drilling technology. It is mainly composed of measurement and control mechanism, bias mechanism and actuator. It can automatically complete rotary steerable fixed-point drilling underground. The directional function, with the characteristics of sliding and rotating, can control the wellbore trajectory more accurately, and the formed wellbore is smoother than the wellbore drilled by the conventional downhole motor-steering drilling tool assembly, which can effectively reduce the frictional torque and the downhole The occurrence of complex situations improves the drilling ability. [0003] At present, there are many different types of rotary steerable tools in the world...

AI Technical Summary

Problems solved by technology

It cannot be used in air drilling, drilling in wells that encounter easy leakage formations, poor mud performance, etc., and often fails during normal use, causing a single direct economic loss of 40,000 to 50,000 yuan, which is not conducive to work. High-quality and efficient development

At the same time, due to the performance limitation of the mud pulse signal transmission method itself, the amount of data transmission information is small, resulting in a large amount of logging-while-drilling data that cannot be sent to the ground in a timely manner, and it is difficult to provide reliable basis for engineering personnel.

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