控压钻井井下不可测变量的非线性估计
徐宝昌, 孟宇, 刘伟
Nonlinear estimation of the down-hole unmeasurable variables in the managed pressure drilling system
Xu Baochang, Meng Yu, Liu Wei
石油学报 . 2016, (12): 1543 -1549 .  DOI: 10.7623/syxb201612010