【多选题】What is the physical quantity describing the fluid's resistance to flow?
A. Density;
B. Relative density;
Composition;
D. Viscosity;
E. Conductivity
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【多选题】Which pressure is bigger, formation pressure and surface pressure?
A. Both are the same;
B. Formation pressure;
C. Surface pressure;
D. Uncertain
【多选题】Which temperature is bigger, formation temperature and surface temperature?
A. Both are the same;
B. Formation temperature;
C. Surface temperature;
D. Uncertain
【多选题】Which viscosity is bigger, formation crude oil and surface crude oil?
A. Both are the same;
B. Formation crude oil;
C. Surface crude oil;
D. Uncertain
【多选题】Which density is bigger, crude oil, natural gas or formation water?
A. The three are the same;
B. crude oil;
C. Natural gas;
D. Formation Water