System

Initial weight

Remaining weight

Recovery rate

Distilled water

50 g

8.55 g

17.1%

Trisulfon Drilling Fluid: Base slurry + 3% SMC + 3% SMP + 3% SMK

50 g

31.60 g

63.2%

Positive electric glue drilling fluid :Base slurry + 2% CYZ + 2% SPC + 2% SPNH

50 g

40.30 g

80.6%

Formula: Water + 3% sepiolite + 0.3% Na₂CO₃ +

3% RH-225 + 3% KCOOH + 3% G-SPH + 3% CQA-10 + 1.5% ZX-1 + Xinjiang barite

50 g

43.95 g

87.9%