Spacing optimization of horizontal wells in Pu 34 tight oil reservoir of Daqing oilfield

Abstract

The geological conditions of Fuyu tight reservoirs in Pu34 well area of Daqing Oilfield are complex. The drainage area of horizontal wells with hydraulic fracturing under different well distribution methods is not clear, and the reasonable well spacing is difficult to determine. Based on the study of the geological characteristics and engineering parameters of the Pu34 well area, this paper establishes the multi-medium geological models of different scales for fluvial sediments in Fuyu reservoir, and studied the reasonable well spacing under different well distribution modes by numerical simulation. The results shown that the development effect of well distribution along the channel direction is better than that along the cutting channel direction. The optimum well spacing along the channel direction is 1800m, and the optimum well spacing along the cutting channel direction is 500m. This research provides a basis for the arrangement of horizontal wells in Fuyu tight oil reservoirs of Daqing Oilfield.