1. In high-inclination drilling, cuttings easily accumulate in the section of 40-60 ��inclination angle and form cuttings beds which lead to accidents of bit bouncing and drill pipe sticking. ��б���꾮�����У���м��40��60�㾮���ѻ��γ���м�����Ծ��°�ȫΣ������������������Ϳ����¹ʡ�
2. The main analysis content includes transformation rule of camber angle, kingpin inclination angle, caster angle, toe in, wheel grounding distance and steering error. ��Ҫ���������У���������ǡ���������ǡ���������ǡ�ǰ�����־༰ת�����ı仯���ɡ�
3. The main analysis content includes transformation rule of camber angle, kingpin inclination angle, caster angle, toe in, wheel grounding distance and steering error. ��Ҫ���������У���������ǡ���������ǡ���������ǡ�ǰ�����־༰ת�����ı仯���ɡ�
4. Firstly, this paper gave out definationsof parameters, the well inclination, azimuth angle, high-edge face angle of the drilling tool and magnetic face angle for the analysis of the MWD tool. �������ȶ������б������������ж��壮������б�ǡ���λ�ǡ��߱߹�����Ǽ����Թ�����ǣ�Ȼ�������һϵ��ȷ�����۲�������ѧģ�͡�
5. Firstly, this paper gave out definationsof parameters, the well inclination, azimuth angle, high-edge face angle of the drilling tool and magnetic face angle for the analysis of the MWD tool. �������ȶ������б������������ж��壮������б�ǡ���λ�ǡ��߱߹�����Ǽ����Թ�����ǣ�Ȼ�������һϵ��ȷ�����۲�������ѧģ�͡�