非API钻具在小井眼水平井中的应用

苏里格小井眼水平井钻井中使用ф88.9 mm钻具出现"两小一高"(排量小、扭矩小、压耗高)的问题,使得螺杆在水平段钻进中动力不足,影响了提速提效。通过API REG 7G计算了钻杆管体的抗扭强度,通过有限元软件分析了接头尺寸与抗扭性能的关系,并根据特殊钻井工艺参数对API钻具接头扣型的要求,提出使用双台肩接头,解决了苏里格水平井钻井中无法在ф177.8 mm技术套管内使用ф101.6 mm钻具的技术难题,实现了钻井过程中的大排量、高螺杆输出扭矩、低循环压耗,满足了苏里格小井眼水平井钻井的需要。

Application of non-API drilling tools in slim hole horizontal well

The use of ?88.9 mm drilling tool in slim hole horizontal well in Sulige Oilfield has the problem of small flow rate, small torque and high pressure drop, causing the screw to be short of power when drilling the horizontal section, hence affecting the ROP and efficiency of horizontal well in Sulige Oilfield. The torque resistance of drillpipe body was calculated as per API REG 7G standard and the relation between connection size and torque performance was analyzed by finite element software, and the use of double-shoulder connection was proposed according to the requirement of special well drilling parameters for API tool connection, so the technical difficulty was solved that the ?101.6 mm drilling tool could not be used in ?177.8 mm intermediate casing while drilling the horizontal well in Sulige Oilfield, realizing large flow rate, high pump pressure and low circulation pressure loss during drilling and also satisfying the drilling of slim hole horizontal well in Sulige Oilfield.