中文摘要：

偏心环是高造斜率井眼轨迹控制工具造斜的核心部分。精确控制内、外偏心环是高造斜率井眼轨迹控制工具轨迹控制精度高、井眼净化好等诸多优异性能的保证。为此，通过运用SolidWorks Motion动态模拟，对内、外偏心环的理想工作状态和实际工作状态分别进行仿真和对比分析，得到偏心环的实际运动轨迹和内偏心环啮合尺寸的内在联系，指出开孔直径与螺栓直径的差值应该大于整个偏心机构的偏心距才不会干涉，从而选择出高造斜率井眼轨迹控制工具最佳的内偏心环驱动啮合尺寸。该项研究结果对高造斜率井眼轨迹控制工具的优化设计具有重要意义。

英文摘要：

Eccentric ring is the core part of high-build-rate well trajectory control tool. Precise control of internal and external eccentric ring is the guarantee of many excellent performances like high-accuracy trajectory control and good hole cleaning. Therefore, the ideal working state and the actual working state of the internal and external eccentric ring are simulated and compared by using SolidWorks Motion dynamic simulation. The relationship of actu- al trajectory of eccentric ring and the engagement size of the internal eccentric ring are obtained. The different value of the diameter of bolt and port should be greater than the eccentricity of the eccentric mechanism to make sure the bolt and port do not interfere. Thus, the engagement size of the internal eccentric ring is optimized. The study results have important significance for the optimization design of high-build-rate well trajectory control tool.