Analysis of Dynamic Connectivity on Carbonate Reservoir with Fracture and Cave in Tahe Field,Tarim Basin

The Ordovician reservoir in Tahe field is a large carbonate reservoir with fractures and caves.The reservoir pore spaces are various caves,fractures,solution pores and micro-fractures.The reservoir development practice confirmed that this reservoir is characterized by multi-fractures-caves,multi-pressure systems and multi-flow units.This paper proposes the analytical methods for using dynamic information to analyze connectivity between fracture and cave,including the reservoir pressure trend analysis,the interwell production interference analysis,the fluid property difference analysis,the interwell interference well test analysis and tracer testing analysis,etc.Also,combined with Tahe actual production data,the flow units are classified and analyzed preliminarily.