supported by the National Natural Foundation of China (No. 41104066);the Basic Research Programs of CNPC during the 12th Five-Year Plan Period (No. 2011A-3601);the Major State Basic Research Development Program of China (No. 2007CB209505);RIPED Young Innovation Foundation (No. 2010-A-26-01)
Tight gas sandstone reservoirs in Guang'an are characterized by wide distribution and low abundance. Sandstone samples from this area usually have low porosity and poor connectivity. We analyze the observed velocity ...