Lost circulation material for abnormally high temperature and pressure fractured-vuggy carbonate reservoirs in Tazhong block, Tarim Basin, NW China

Xiaoming SU,Zhanghua LIAN,Junwei Fang,Hanqiao XIONG,Ruoning WU,Yuan YUAN

Table 2 Results of rigid particle GZD dosage optimization.

Dosage/% Maximum pressure/ MPa Leakage/ mL Cumulative leakage/mL Critical pressure/ MPa 1% A 0 / / 0.5 2% A 0 168 168 0.5 3% A 0.5 102 122 1.0 4% A 0.5 87 199 1.0 4% A+1% B 0.5 80 186 1.0 4% A+2% B 1.0 52 216 1.5 4% A+3% B 1.0 48 200 1.5 4% A+2% B+1% X 1.0 50 194 1.5 4% A+2% B+2% X 3.0 10 193 3.5 4% A+2% B+3% X 3.0 12 186 3.5