›› 2009, Vol. 30 ›› Issue (S1): 235-238.

• Numerical Analysis • Previous Articles     Next Articles

Simulation model of drilling process of three-cone bit

KUANG Yu-chun, WU Kai-song, YANG Ying-xin, MA De-kun   

  1. Southwest Petroleum University, Chengdu 610500, China
  • Received:2009-04-20 Online:2009-08-10 Published:2011-03-16

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Abstract:

The drilling process simulation of bits is important to optimize bit design, to improve efficiency of breaking rock, as well as to bit selection. Based on oil field drilling data, black-box method is used to be a basic modeling method of interaction model between bits and rock. Two important simulation models are built, which determine bit drilling performance, pit model of tooth and force-penetration model of tooth penetrate rock. Parameters of model are estimated by error gradient descent algorithm which includes parameters of bit structure and the rock properties. Then the simulation of bit drilling process is made. The main ideal of modeling by the drilling data is beneficial to use these data to improve the model, and reflects the various drilling conditions better. It also improves the practicability and economical efficiency of simulation technology of bits breaking rock.

Key words: three-cone bit, drilling process, inversion, simulation model, parameter estimation

CLC Number: 

  • TD 41
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