China University of Petroleum

Zhanjiang Branch of Cnooc (china) Co., Ltd

Shen Guan

Jian Li

Yong Wang

Guancheng Jiang

Yinbo He

Lili Yang

Baojiang Sun

Zhiyuan Wang

Jun Cai

Chunyao Peng

Hao Li

Tengfei Dong

Xiaohui Sun

Yonghai Gao

Xuwu Luo

Bangtang Yin

Bin Tan

Xuerui Wang

Xing Liang

Xiaohu Quan

Zhiliang You

Yongbin Guo

Xiongjun Wu

Shujie Liu

Baitao Fan

Haikang He

The embodiments of the invention provide an intelligent prediction method and apparatus for reservoir sensitivity, belonging to the technical field of reservoir sensitivity prediction. The method includes: acquiring a reservoir sensitivity influence factor item related to a reservoir sensitivity result to be predicted and numerical values of corresponding reservoir sensitivity influence factors; determining a corresponding type of database according to the reservoir sensitivity influence factor item; determining whether numerical values of reservoir sensitivity influence factors corresponding to core parameters in the numerical values of the reservoir sensitivity influence factors include a first upper boundary value or a first lower boundary value; and using, according to whether the first upper boundary value or the first lower boundary value is included, different intelligent sensitivity prediction models to calculate the reservoir sensitivity result to be predicted.

Intelligent prediction method and apparatus for reservoir sensitivity

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

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Zhanjiang, China

Shen Guan