China University of Petroleum

Zhanjiang Branch of Cnooc (China) Co., Ltd

Baitao Fan

Baojiang Sun

Zhiyuan Wang

Hao Li

Xiaohui Sun

Yonghai Gao

Bangtang Yin

Xuerui Wang

Shujie Liu

Shen Guan

Haikang He

The present invention provides a method and equipment for optimizing hydraulic parameters of deepwater managed pressure drilling in real time. The method comprises: acquiring overflow parameters in the current drilling process, performing preprocessing and feature extraction on the overflow parameters, and inputting the overflow parameters into trained support vector machine identification models for overflow judgment. If overflow occurs at the current drilling depth, reducing an opening of a throttle valve and increasing a displacement of a submarine pump, measuring a wellhead back pressure and calculating a bottom hole pressure, and judging whether overflow continues is performed. If overflow continues, mixing high-density drilling fluid with the original drilling fluid, pumping the mixture into a wellbore annulus, and performing the above operations of reducing the throttle valve opening, increasing the displacement of the submarine pump, calculating the bottom hole pressure and judging whether overflow continues is performed until overflow no longer occurs.

Method and equipment for optimizing hydraulic parameters of deepwater managed pressure drilling in real time

Growing community of inventors

Zhanjiang, China

Baitao Fan