Four kinds of typical wells

namely paying

stripped

deficient

and barren wells are recognized in the Block 11 of Tahe oilfield through integrated research of geology

geophysics

and reservoir dynamics.A development plan

which gives first priority to paying wells followed by stripped wells

minimizes deficient wells and eliminates completely barren wells

was proposed based on an analysis of the specific geophysical features and performances of the reservoirs encountered by these wells.The practice shows that the plan is quite effective in improving drilling success ratio and economic returns.