井眼轨迹控制工具润滑油泄漏分析

井眼轨迹控制工具在打定向井、水平井等复杂结构井时可自动灵活地改变钻头前进方向,起到导向作用。由于工具内部运动部件较多,为了防止磨损,需要进行润滑,同时井眼轨迹控制工具在工作过程中不可避免地会发生泄漏。因此,工具工作时间越长,泄漏量越大,工具内部所剩余的润滑油也越少。为了研究工具内部润滑油泄漏情况,建立了工具润滑油整体泄漏模型,得出了工具内部润滑油压力与总体泄漏量之间的关系,并通过试验验证了分析结果。研究结果表明,润滑油总体泄漏量随着压力的增大而增大,并指出工具最大持续工作时间为200 h。

Wellbore Trajectory Control Tool Lubricating Oil Leakage Analysis

Wellbore trajectory control tool can automatically change the direction of the bit when drilling directional well and horizontal well as well as complex structure well. Due to the large quantity of internal moving parts, in order to prevent friction, lubrication is required. At the same time wellbore trajectory control tool will have inevitable leaking problem in the working process. Therefore, the longer it works, the greater leakage it will have, and the lubricating oil remaining inside the tools decrease. In order to study the internal oil leakage, tools lubricating oil leakage model is established and the relationship between the overall leakage and the lubricating oil pressure was concluded, the results of the analysis is also verified by experiment. Research results show that the lubricating oil leakage increases with the lubricating oil pressure, and pointed out that tool maximum continuous working time is 200 hours.