Sliding steering drilling tool face angle change experiment system and using method thereof

Abstract

The invention relates to a sliding steering drilling tool face angle change experiment system and a use method thereof, and the system is characterized in that the system comprises a supporting frame,a loading system, a tool face angle measurement system, a drill stem simulation system, a reaction torque simulation system, and a computer. The top layer of the support frame is provided with the loading system, and the loading system is used for simulating top drive rotation. A tool face angle measuring system is arranged on the bottom layer of the supporting frame, the output end of the loading system is connected with one end of a drill stem simulation system through a first coupler, simulation drilling fluid is injected into the drill stem simulation system, and the other end of the drill stem simulation system penetrates through all middle layers of the supporting frame and is connected with the tool face angle measuring system through a second coupler. The tool face angle measuringsystem is used for collecting face angle data. A reaction torque simulation system is arranged on the second coupling and used for simulating reaction torque borne by the drill bit. The computer is electrically connected with the loading system and the tool face angle measuring system. The device can be widely applied to the field of petroleum drilling indoor experimental equipment.

Description

technical field [0001] The invention relates to a sliding-steering drilling tool surface angle change experimental system and a method for using the same, belonging to the field of indoor experimental equipment for petroleum drilling. Background technique [0002] Sliding steerable drilling has natural advantages such as simple and easy-to-implement drilling tool structure and low cost of use. However, in the actual drilling process, due to the complexity of the drilled wellbore trajectory, the uncertainty of formation conditions, and the distance between the drill string and the well wall Due to the joint influence of static friction and sliding friction, there is a strong nonlinearity in the control process of the downhole motor's tool face angle, and it also shows a strong hysteresis characteristic. Therefore, at present, the tool face angle control of slide steerable drilling mainly relies on the driller's experience, and lacks an effective theoretical model or even an e...

AI Technical Summary

Problems solved by technology

However, the physical simulation devices for directional drilling that have been developed so far still have the following deficiencies: 1) The simulation of the drill string and the borehole wall is not detailed enough, regardless of the similarity between the experimental model and the actual drilling system; the simulation is only performed from the perspective of geometric similarity , regardless of dynamic similarity, in fact, in the drilling process, the force plays a crucial role, it is very necessary to consider dynamic similarity

2) The simulation of the drilling process is not comprehensive enough, and the research on the change law of the tool face angle during the drilling process is still blank

3) There is a lack of a simulation device for counter torque, and in the actual drilling process, the counter torque of the rock to the drill bit has an important influence on the change of the tool face angle

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