China National Petroleum Corporation

Cnpc USA Corporation

Beijing Huamei Inc.

Cnpc Engineering Technology R&d Company Limited

Beijing Huamei Inc Cnpc

Fuchen Liu

Lili Chen

Ming Xu

Wei Liu

Chi Zhang

Yong Ma

Jiangshui Huang

Lijun Lin

Hua Zhang

Yao Wang

Yongjin Yu

Jianzhou Jin

Zishuai Liu

Yuchao Guo

Fengzhong Qi

Youzhi Zheng

Shuoqiong Liu

Zhiwei Ding

Qin Han

Jianshen Li

Genyao Lin

Congfeng Qu

Chongfeng Zhou

Bin Lyu

Xiaobing Zhang

Yusi Feng

Pu Xu

Shunping Zhang

Songbing Yan

Yiliu Sun

Jiwei Jiang

Jiaying Zhang

Haizhi Zhang

Guifu Wang

Chenyang Zhou

A method to determine the velocity of static proppant settling in fracturing fluids. The proppant carrying capability of different friction reducer products can be compared, so the appropriate friction reducer product can be selected for hydraulic fracturing operations. The effect of friction reducer concentrations in the fracturing fluids, the salinity and hardness of the fracturing fluids, and the proppant size on the velocity of static proppant settling can be studied to optimize the chemical structures of the friction reducers in the process of synthesis and optimize the hydraulic fracturing operation, e.g. to determine the proper concentration of friction reducers according to the salinity and proppant size.

Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids

An ultra-high temperature resistant cement slurry system comprising cement, an ultra-high temperature strength stabilizer, an ultra-high temperature reinforcing material, a density regulator, an ultra-high temperature suspension stabilizer, a dispersant, a fluid loss additive, a retarder, a defoaming agent and water, wherein the ultra-high temperature suspension stabilizer comprises an ether-based starch, an aluminosilicate and a polyalcohol polymer. The method for preparing the cement slurry system includes dry mixing and wet mixing raw materials homogeneously, respectively, and then homogeneously mixing the dry mix and wet mix to obtain the cement slurry system. The cement slurry system can be used for cementing in deep wells and ultra-deep wells at high and ultra-high temperatures.

Ultra-high temperature resistant cement slurry system for cementing and preparation method and use thereof

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Beijing, China

Fuchen Liu