| Abstrakt: |
The geometric form and mechanical state of flexible short joints and milling tools directly affect the efficiency of casing side drilling window opening and the shape of side drilling window. Based on the principle of casing window drilling technology, analyze the force, vibration, and bending status of the flexible short joints and milling tools, design a "five factor and four level" orthogonal experiment, obtain the optimal level parameters of the tool structure and operation, and study the influence of different optimal level parameters on the Mises stress, milling cone cutting force, and lateral force of the flexible short joint. The results show that the drilling pressure, short pitch diameter to thickness ratio, and short pitch length have a significant impact on the mechanical properties of the tool, while the impact of rotational speed and casing type is relatively small. The time required for casing window opening operation in a certain well has been reduced, and the overall window opening efficiency has increased by 30. 6 % compared to the average level of other conventional window opening wells in the same block. This method can effectively improve the efficiency and lifespan of the tool, and the optimal parameter combination provides a reference for the optimization of window opening tool models and parameters under different working conditions. [ABSTRACT FROM AUTHOR] |
