Tian H.,No. 42 Yanshan Nanlu |
Cao H.,No. 42 Yanshan Nanlu |
Liu J.,No. 42 Yanshan Nanlu |
Guo K.,No. 42 Yanshan Nanlu
Drilling Fluid and Completion Fluid | Year: 2015
A high temperature water base drilling fluid filter loss reducer, BZ-HTF, was developed for use in Block Niudong, Qinghai. BZ-HTF was synthesized with monomers AM, AMPS and IA in a mass ratio of 42:40:18, and initiator concentration of 0.10%. Total concentration of the monomers was 30%. The reaction lasted for 4 hours at 55℃. BZ-HTF has a degree of hydrolysis of 30%, and remains effective at temperatures as high as 200℃. It has good filtration control capacity in fresh water base mud, brine mud and saturated saltwater mud, and does not greatly increase the viscosity and gel strengths of the muds. BZ-HTF has filtration control capacity comparable to Drispac D, while its cost is only one fourth of the latter. ©, 2015, North China Petroleum Administration Drilling Technology Research Institute. All right reserved.