South China University of Technology

Yangtze University

Cnooc China Limited, Zhanjiang Branch, Guangdong

Deep Pure Technologies (shenzhen), Ltd.

Zhong Li

Jing Jing Xiao

Mingbiao Xu

Fuchang You

Yanjun Li

Lei Dong

Neng Liao

Hexing Liu

Guang Miao

Shanshan Zhou

Cuiting Yang

This invention disclosure reported here a supported metal hydroxide adsorbent and a method for its preparation as well as a method for its oxidative regeneration. The supported metal hydroxide adsorbent comprises metal hydroxide and support with a mass ratio of 5-30:100. The adsorbent disclosed in present invention exhibited outstanding adsorption capacity and high selectivity to sulfur impurity in gasoline. The method of oxidative regeneration provides an efficient way for the recovery of the saturated adsorbent.

Supported metal hydroxide adsorbent for ultra-deep desulfurization of gasoline and methods for its preparation and its oxidative regeneration

A water-based drilling fluid for deepwater drilling includes 0.1%-1.0% by weight of a viscosifier, 0.1%-1.0% by weight of an acidity regulator, 0.5%-3.5% by weight of a filtrate loss reducer, 0.5%-1.5% by weight of a low-temperature yield point enhancer, 1.0%-5.0% by weight of a shale inhibitor, 15%-25% by weight of a hydrate inhibitor, 1.0%-3.0% by weight of a lubricant, 5.0%-10.0% by weight of a temporary plugging agent and seawater.

Water-based drilling fluids for deepwater drilling and use thereof

Growing community of inventors

Guangdong, China

Zhong Li