连续循环系统上卸扣卡瓦卡紧力计算方法研究  

Analysis on Elastic Load Bearing Capacity of Tubes Inside Slips

作　　者：王锡洲[1,2] 王洪兵 肖利君[4] 朱海燕[5] 刘清友[5] 莫丽[5] 韩传军[5] 

机构地区：[1]中国石油化工股份有限公司科技开发部,北京100728 [2]西南石油大学,成都610500 [3]辽河石油装备制造总公司,辽宁盘锦124010 [4]中国石油西南油气田公司川东北气矿,四川达州635000 [5]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500

出　　处：《石油矿场机械》2009年第10期35-39,共5页Oil Field Equipment

基　　金：国家自然科学基金项目"基于钻井系统动力学的井眼轨迹预测理论及控制方法研究"(50474040);中国石油化工集团公司先导性项目"钻柱连续循环系统技术研究"(P07044)

摘　　要：连续循环系统可以在更换钻杆接头操作时保持泥浆的连续循环。从连续循环系统上卸扣卡瓦的工作机理入手,分析了钻杆工作时的受力状态。在调研了卡瓦卡紧管柱力学模型的基础上,将钻杆看作厚壁筒,采用弹性力学中的拉美公式求解连续循环系统钻杆内、外受压的应力问题;将钻杆外表面承受的摩擦力矩看作圆筒扭转问题进行求解。给出了连续循环系统上卸扣卡瓦卡紧力的计算方法,可用于指导连续循环系统的设计。The continuous-circulation system is new in oil drilling. It can maintain mud continuing when replacing the drill string and the rooted operation. Based on the methods to calculate the clamping force and the operational principle of slip of continuous-circulation system, the relationship of lateral pressure and the friction of master bushing and slip were revealed, and the forced state of drill pipe was clarified. Taking the drill pipe as thick-walled cylinder, the stress of internal and external compressed was solved with the Lame equation. The friction torque of drill pipe outer surface was calculated with cylinder torsion methods. The limit clamping force calculation formula of slip of continuous-circulation system was given, which can be used to guide the design of slip of continuous-circulation system.

关 键 词：卡瓦 卡紧力 管柱 计算方法 

分 类 号：TE921.902[石油与天然气工程—石油机械设备]