Coordinate transformation of single curved screw drill tool during descent the well
SUN Qiao-lei1��LI Xiu-quan2��YAN Biao1��CHEN Min1��ZHANG Xin2��ZHAO Heng-yu1
1. School of Mechanical Engineering��Yangtze University�� Jingzhou 434023�� China 2. Geophysics and Information Engineering��China University of Petroleum�� Beijing 102200�� China
Abstract��As many domestic and large foreign oilfield evolving into the final stage�� and the requirement of exploration of special reservoirs�� more and more short radius horizontal well are applied. Due to higher build-up rate requirement in the casing sidetracking short horizontal well�� larger structure of bending angle of screw drilling tools is required. It is very important to establish the screw drilling tools location (coordinates) model for the subsequent analysis of model calculation for single curved screw drilling tools in the well head down. This paper introduces the basic component of screw drilling tools�� by changing the distance of non-magnetic drill pipe�� compound pipe in upper screw drill tool��to calculate the coordinate values of assembly before and after entrance the casing . It provides certain theoretical basis for the calculation model to some analysis of single curved screw drill tool into the casing under the mouth of the well.
�ո�����: 2014-12-17
��������: 2015-05-18
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E-mail: sunqiaolei@163.com
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�����ף�����Ȩ��۳ �꣬�� ������ �Σ�������. �����ݸ�����ھ�����������������ת������[J]. �й������ڿ���, 2015, 33(3): 59-63.
SUN Qiao-lei��LI Xiu-quan��YAN Biao��CHEN Min��ZHANG Xin��ZHAO Heng-yu. Coordinate transformation of single curved screw drill tool during descent the well. Chinese Journal of Iron and Steel, 2015, 33(3): 59-63.
2015, Vol. 33 
