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Li H.,No. 81 Xinggong Xidajie | Zhang H.,No. 81 Xinggong Xidajie | Fu J.,No. 81 Xinggong Xidajie | Xiang X.,No. 81 Xinggong Xidajie | Wang Y.,No. 81 Xinggong Xidajie
Drilling Fluid and Completion Fluid | Year: 2015

Effects of several rice husk ashes prepared under different incineration conditions on the compressive strength and engineering performance of cement slurry is studied. The study shows that incineration, concentration of the rice husk ash, aging temperature and alkaline activator all affect the compressive strength of set cement. In field application, husk rice ash prepared under low temperature is preferred, and the optimum treatment is about 10%. The use of alkaline activator increases the compressive strength of the set cement. RHA-1, a cement slurry treated with 10% rice husk ash has very good engineering performance, satisfying the needs for well cementing. ©, 2014, North China Petroleum Administration Drilling Technology Research Institute. All right reserved.


Zhao Z.,No. 81 Xinggong Xidajie | Miao H.,No. 81 Xinggong Xidajie | Yi Y.,No. 81 Xinggong Xidajie
Drilling Fluid and Completion Fluid | Year: 2015

Xanthan gum was hydrophobically modified using NA, an alkylated organometallic compound, as modifying agent, and absolute ethanol as dispersion medium under acidic condition. The prepared dispersible instant xanthan gum, DIXG, was evaluated for its dispersing capacity, dissolubility and rheology. Experiment results showed that DIXG has dispersing capacity and dissolubility that are better than dispersible xanthan gum produced in China, with its rheology being the same as other samples. ©, 2015, North China Petroleum Administration Drilling Technology Research Institute. All right reserved.

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