Establishment of Force Model for Eccentric BHA

Abstract:

Eccentric BHA is a new deflection controlling tool. It’s difficult for us to analyze the stress of eccentric BHA. The paper probed into the theory model of it. The eccentric BHA based the theory model was carried out field testing in Liaohe Oil Field. Good results have been gotten. Borehole deflection was controlled and high penetration rate was also kept.