Turntable type drilling machine system based on tool surface dynamic control of underground drilling tool and drilling method based on tool surface dynamic control of underground drilling tool

Abstract

The invention relates to a turntable type drilling machine system based on tool surface dynamic control of an underground drilling tool and a drilling method based on the tool surface dynamic control of the underground drilling tool. The drilling machine system comprises a dynamic control system and a drilling system, wherein the dynamic control system comprises a dynamic measuring sub system, a feedback control sub system, a user interaction sub system and an execution sub system; a user inputs drilling tool information, drilling fluid information, stratum information and control strategies through the user interaction sub system; the feedback control sub system builds a many-body dynamics model of the drilling system according to the received drilling tool information, drilling fluid information and stratum information; the dynamic measuring sub system measures various kinds of information of the drilling system in the drilling process, and transmits the information to the feedback control sub system; the feedback control sub system judges whether the tool surface of the underground drilling tool exceeds a set threshold or not, calculates the required rotating angle of a turntable, the position of a large hook and the pump speed of a slurry pump through multi-body dynamics simulation, and drives the turntable, the large hook and the slurry pump to act; the drilling is continuously carried out so that the tool surface of the underground drilling tool returns to a design position, and the dynamic regulation control on the tool surface of the underground drill tool is completed.

Description

technical field [0001] The invention relates to an oil and gas field drilling rig system and a drilling method, in particular to a rotary table drilling rig system and a drilling method based on a multi-body dynamics model for dynamic control of the tool face of a downhole drilling tool. Background technique [0002] Sliding steerable drilling is a common method for directional drilling operations, which uses downhole angled power drilling tools to build deflection. However, under the conditions of formation lithology changes, mud flow changes and drill bit wear, the tool face of the dynamic drilling tool is prone to deviation, causing the actual wellbore to deviate from the designed trajectory. At present, the general method to deal with this problem is to lift the drill after stopping the drilling and readjust the downhole motor so that the tool face of the downhole motor points to the correct position. However, this method reduces the efficiency of drilling operations. T...

AI Technical Summary

Problems solved by technology

However, under the conditions of formation lithology changes, mud flow changes and drill bit wear, the tool face of the dynamic drilling tool is prone to deviation, causing the actual wellbore to deviate from the designed trajectory

At present, the general method to deal with this problem is to lift the drill after stopping drilling and readjust the downhole motor to make the tool face of the downhole motor point to the correct position, but this method reduces the efficiency of drilling operations

The tool face of the downhole drilling tool can be measured in real time by using the measurement while drilling equipment, and the direction of the tool face of the downhole dynamic drilling tool can be adjusted or corrected by rotating the top drive or the rotary table according to the measurement results, but due to the drill string system in the measurement while drilling equipment Long and extensive drill string system contact with the borehole wall, making it difficult to determine the angle required to turn the top drive or rotary table

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