TY - JOUR
TI - BOUNDARY EFFECT ON LIQUID INVASION IN TIGHT GAS RESERVOIRS
AU - Li Gao
AU - Ren Wen-Xi
AU - Meng Ying-Feng
AU - Feng Yi
AU - Sun Ai-Sheng
AU - Chu Heng-Zhi
JN - Thermal Science
PY - 2015
VL - 19
IS - 4
SP - 1393
EP - 1396
PT - Article
AB - Liquid invasion is an important transport phenomenon in many geophysical and environmental applications. A new capillary model considering boundary effect is proposed to reveal its mechanism. The boundary fluid layer not only reduces the effective flow radius, but also changes the viscosity of fluid. Thus the capillary force and viscosity resistance increases, however, the increase of capillary force is faster than that of viscosity resistance, therefore the invasion front arrives at the critical distance earlier.