Drilling rig system and drilling method based on dynamic control of tool face of downhole drilling tool
A dynamic control and tool face technology, applied in the automatic control system of drilling, drilling equipment and methods, drilling equipment, etc., can solve difficult drilling tools, effectively control the tool face and wellbore trajectory, reduce work efficiency, and increase drilling costs and other problems, to achieve the effect of simple and fast measurement or estimation, reducing accuracy requirements, and reducing accuracy requirements
Active Publication Date: 2017-07-14
CHINA NAT OFFSHORE OIL CORP +1
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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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[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0038] like figure 1 , figure 2 As shown, the drilling rig system of the present invention includes a dynamic control system 100 and a drilling system 200 .
[0039] like figure 1 As shown, the dynamic control system 100 includes a data acquisition module 101, a user input module 102, a multi-body dynamics modeling module 103, an adaptive model correction module 104, a tool face estimation module 105, a control law generation module 106, and a control information output module 107 , an execution module 108 , a dangerous state judging module 109 , a measurement information output module 110 and a system output module 111 .
[0040] Among them, the data collection module 101 transmits the collected working state measurement information of the drilling system to the multibody dynamics modeling module 103, the adaptive model correction module 104, the...
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A drilling rig system and drilling method based on the dynamic control of the tool face of an adaptive downhole drilling tool. The drilling rig system includes a dynamic control system and a drilling system. The dynamic control system includes a data acquisition module, a control strategy input module, a drilling model information input module, and multiple Body dynamics modeling module, adaptive model correction module, tool surface estimation module, control law generation module, execution module and dangerous state judgment module. The user inputs the control strategy and drilling model, the data acquisition module collects the drilling conditions of the system, the multi-body dynamics modeling module performs multi-body dynamics modeling based on the drilling model, and the adaptive model correction module corrects the multi-body dynamics model based on the drilling conditions , the tool face estimation module and the control law generation module calculate the control law of the control actuator based on the control strategy, drilling situation and the revised multi-body dynamics model; the dangerous state judgment module sends out an alarm when the system is in a dangerous state. The invention can significantly improve the working efficiency and precision of directional drilling, and can be widely used in underground directional drilling operations.
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...
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IPC IPC(8): E21B3/04E21B44/00
Inventor 程载斌曹砚锋姜伟周建良刘书杰李汉兴武广瑷李峰飞
Owner CHINA NAT OFFSHORE OIL CORP