Taking an interbedded thin sandstone reservoir with low permeability in Chun-41 block in the fourth member of the Shabejie Formation as an example

the factors that affect the development of low-permeability oilfields are analyzed based on their percolation mechanism.Inappropriate well spacing

poor matching of well pattern with fractures

improper timing of waterflooding

and low awareness of reservoir protection

are all considered to be factors contributing to the poor performance of low permeability oilfields.Based on study of percolation mechanism and distribution of earth stress field

several corresponding measures have been proposed to deal with the problem.And the results of field implementation of the measures shows that the daily oil production

oil recovery rate

and daily injection rate of the field are evidently increased and the water cut and injection pressure are lowered.The recovery efficiency is also estimated to be raised by 5.23 %

showing that the measures can effectively improve the performance of low permeability reservoirs.