Measuring and controlling device used for rotary steering drilling system and measuring and controlling method utilizing same

Abstract

The invention relates to a measuring and controlling device used for a rotary steering drilling system and a measuring and controlling method utilizing the same. The device comprises a microprocessor module, a data acquisition module, a driver module, a data communication module, a data storage module and a power management module. The method comprises the following steps: 1) carrying out pressure pulse coding on the control instruction on the ground and transmitting the code to the microprocessor module under the shaft; 2) carrying out system initialization and self check and checking whether a main CPU (central processing unit) works normally, if no, switching to a redundant CPU; 3) using the microprocessor module to decode the pressure pulse to obtain the instruction transmitted by the pressure pulse; 4) using a system to acquire data and calculating the deviation angle and high-side tool face angle of the position of a current rotary steering drilling tool, the eccentric displacement of the current rotary steering drilling tool and the displacement extension of an actuating mechanism; and 5) decoding the pulse instruction, carrying out PID (proportion integration differentiation) control on the calculated displacement extension of the actuating mechanism and adjusting the displacement extension of the actuating mechanism. The device is used for the static biased directional rotary steering drilling tool, and can be used for accurately measuring the eccentric displacement of the tool and simultaneously controlling the expansion amount of wing ribs more accurately.

Description

technical field [0001] The invention belongs to the technical field of drilling measurement and control, and relates to a drilling measurement and control device and a measurement and control method thereof, in particular to a measurement and control device for a rotary steerable drilling system and a measurement and control method thereof. Background technique [0002] Rotary steerable drilling technology has been widely used in the field of oil drilling. In directional wells, extended-reach wells, three-dimensional trajectory wells, and complex oil and gas well operations, the use of rotary steerable drilling technology can significantly reduce operational risks, improve drilling efficiency, and reduce development costs. [0003] The currently used rotary steerable drilling tools can be divided into the following three types according to the working mode: static offset pushing type, dynamic offset pushing type and static offset pointing type. The measurement and control d...

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Problems solved by technology

[0004] After searching the public literature of the prior art, it is found that although the working principle of the measurement and control device of the rotary steerable drilling tool is pointed out, and a measurement and control method for the static offset pointing rotary steerable drilling tool is propose

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