Investigation on the asymmetric inter-fracture asynchronous huff-n-puff technology for the horizontal well group in the tight oil reservoir

Water huff-n-puff is one of the effective energy supplement methods for development tight oil reservoirs by horizontal wells. However, production performance water severely decreases after several cycles. Available researches indicate that inter-fracture asynchronous injection-production technology well an efficient method improving huff-n-puff. considering object huffn- puff single well, study a group less. Therefore, asymmetric was investigated in this paper. The productions different modes were compared and analyzed first. After that, recovery mechanisms revealed. Finally, influence operating parameters on studied numerical simulation method. results show with huff-n-puff, accumulative increased 5134.8m3, amplitude 36.86%. imbibition, displacement, inter-well displacement are main group. increases first, then declines, finally tend to be stable increase injection rate. Both volume soaking time positive correlation production. rate due aggravation channeling stage. This work could provide certain theoretical guidance similar