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为了研究井眼轨迹参数对钻头侧向力的影响规律对现场井眼轨迹的有效控制 ,利用专用软件SABHA探讨了已钻井眼轨迹参数对钻头侧向力的影响 .结果表明 ,井斜角的影响表现为在不同的井斜角条件下 ,所研究的 BHA具有不同的造斜能力 ,而且这种造斜能力随井斜角的增加在相应提高 .弯曲平面倾角和井眼曲率的有机结合可以很好的描述井眼轨迹空间形状对钻头侧向力的影响 .当弯曲平面倾角为 0°时 ,钻头上的方位力近似为零 ,而当弯曲平面倾角为 90°或 2 70°时 ,钻头上的方位力很大 .表明当不考虑地层因素的影响时 ,井眼的弯曲平面倾角及弯曲程度是产生钻头方位力的一个主要因素 .在现场井眼轨迹控制过程中 ,应充分考虑这一特点
In order to study the influence of borehole trajectory parameters on the lateral force of drill bit to effectively control the trajectory of the borehole, the effect of the parameters of the drilled hole trajectory on the lateral force of drill bit was discussed by the special software SABHA.The results show that the effect of well inclination The results show that under different conditions of well inclination, the studied BHA has different ability to make a slant, and this ability to make a slant increases with the increase of the inclination of the well.The combination of the inclination of the bending plane and the curvature of the wellbore can be very good A good description of the influence of the wellbore trajectory shape on the bit lateral force is shown in Figure 1. When the angle of inclination of the bending plane is 0 ° the azimuthal force on the bit is approximately zero and when the angle of inclination of the bending plane is 90 ° or 270 ° Which shows that when the influence of formation factors is not taken into consideration, the inclination angle and bending degree of the bent plane of the wellbore are the main factors that generate the azimuth force of the drill bit.This feature should be fully taken into consideration during the well trajectory control of the site