Cnpc Engineering Technology R&d Company Limited

Petrochina Company Limited

China National Petroleum Corporation

Beijing Huamei Inc Cnpc

Bin Lyu

Ming Xu

Wei Liu

Chi Zhang

Yong Ma

Hua Zhang

Jianzhou Jin

Yongjin Yu

Youzhi Zheng

Zishuai Liu

Fengzhong Qi

Yuchao Guo

Shuoqiong Liu

Zhiwei Ding

Yusi Feng

Chongfeng Zhou

Congfeng Qu

Wei Li

Lili Chen

Yao Wang

Qin Han

Hong Yue

Zhaohui Wang

Shunping Zhang

Fuchen Liu

Pu Xu

Hongfei Ji

Jinping Yuan

Xiaobing Zhang

Jiaying Zhang

Haizhi Zhang

Guifu Wang

Chenyang Zhou

Songbing Yan

Yiliu Sun

Zhao Huang

Huiting Liu

Jiwei Jiang

Jiyun Shen

Youcheng Zheng

Xiujian Xia

Yong Li

Jiliang Liu

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

A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.

Well cementing method for improving well cementing quality by controlling hydration heat of cement slurry

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Beijing, China

Bin Lyu