螺杆动力钻具压耗计算方法研究与分析  

Research and analysis on PDM pressure loss calculation method

作　　者：王鄂川[1] 樊洪海[1] 李岩泽 罗立新[1] 沈维格[1] 王义顷 

机构地区：[1]中国石油大学,北京102249 [2]川庆钻探工程有限公司工程技术研究院,陕西西安710018

出　　处：《石油钻采工艺》2013年第6期9-14,共6页Oil Drilling & Production Technology

基　　金：国家自然科学基金项目"高压气井内高速流体诱发生产管柱振动特性研究"(编号:51274219);国家自然科学基金项目"复杂油气井钻井与完井基础研究"(编号:51221003)

摘　　要：随着深井、超深井和大位移井技术的发展,螺杆动力钻具(PDM)的使用越来越普遍,围绕着螺杆动力钻具压耗的计算也越来越受到钻井工作者的重视。通过对已有螺杆钻具压耗计算方法的归纳和总结,将螺杆钻具压耗计算方法分为一般法与模型法两大类,并对其进行了详细的分析比较。同时,优选罗伯逊—斯蒂夫钻井液流变模式,详细推导了圆筒模型中螺杆钻具压耗的计算方法。最后,完善了模型法中复杂模型法的螺杆钻具压耗推导过程。结果表明,当对螺杆钻具压耗计算精确度要求较高时,可选用模型法里的复杂模型方法来计算。With the development of the deep well, ultra deep well and extended reach drilling （ERD） technologies, the Positive Displacement Motor （PDM） has been used more and more popularly. Meanwhile, the pressure loss calculation method is paid much more attention. By concluding and summarizing the present pressure loss calculation methods, the paper divided them into two categories, general methods and model methods, for comparison and analysis in detail. In addition, the Roberston-Stiff（R-S） rheological model has been selected to deduce the pressure loss calculation method in the cylindrical model. Finally, the derivation process of the complex model, one of the model methods, has been perfected. The result shows that we can choose the complex model calculation method to get a high accuracy of pressure loss.

关 键 词：螺杆钻具 压耗计算 模型法 罗伯逊—斯蒂夫模式 

分 类 号：TE921[石油与天然气工程—石油机械设备]