Abstract: The thin and bottom water reservoir like Block Lao-68 in Shengli oilfield has more and more contributions in recent years to this oilfield in incremental reserves and production. But such a reservoir is commonly of features such as low water drive control level, low single well yield and low oil recovery. On the basis of the establishment of the geological model of this block, the injection-production well pattern is optimized by streamline model. By which the original geological model is re-corrected, and the key production parameters are optimized, thus providing the scientific basis for reasonable and efficient development of this reservoir.

Key words: narrow river channel, thin and bottom water reservoir, well pattern optimization, streamline model, end point calibration