Drilling machine system based on dynamic control of tool face of self-adaptive downhole drilling tool and well drilling method

Abstract

The invention discloses a drilling machine system based on dynamic control of a tool face of a self-adaptive downhole drilling tool and a well drilling method. The drilling machine system comprises a dynamic control system and a well drilling system, the dynamic control system comprises a data collection system, a control strategy input module, a well drilling model information input module, a multi-body dynamics modeling module, a self-adaptive model correction module, a tool face estimation module, a control rule generation module, an execution module and a danger state judgment module. A user inputs a control strategy and a well drilling model, the data collection module collects system drilling condition, the multi-body dynamics modeling module performs multi-body dynamics modeling on the basis of the well drilling model, the self-adaptive model correction module corrects a multi-body dynamics model on the basis of the drilling condition, the tool face estimation module and the control rule generation module calculate control rules for controlling the execution module on the basis of the control strategy, the drilling condition and the multi-body dynamics model after being corrected, and the danger state judgment module gives out an alarm when the system is in a danger state. The drilling machine system can remarkably improve well drilling efficiency and accuracy and can be widely used for downhole directional drilling.

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 multi-body dynamics model-based adaptive downhole drilling tool face dynamic control. Background technique [0002] Sliding drilling using angled drilling tools is a commonly used drilling method in petroleum directional drilling. Due to changes in formation lithology, changes in mud pump speed, wear of drill bits and power drilling tools, etc., the tool face of downhole drilling tools is prone to drift, which will cause the wellbore trajectory to deviate from the designed trajectory. When the ground engineer finds that the tool face of the drilling tool drifts, the conventional treatment method is to immediately stop the drilling and lift the drilling tool, adjust the tool face of the drilling tool to the required position, and then go down and continue drilling. Obviously, this me...

AI Technical Summary

Problems solved by technology

Obviously, this method will affect the drilling schedule, reduce work efficiency, and increase drilling costs

In addition, in the conventional sliding steerable drilling process, because the drill string of the sliding steerable drilling system does not rotate, it is easy to generate a large frictional torque

For the wellbore with clear formation conditions, the frictional torque can be overcome by rotating the turntable according to the well depth and the combination characteristics of the drilling tool; but for the flexible drill string system with large slenderness ratio, it is difficult to realize the Effective control

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