Analysis of Interwell Connectivity of Tracer Monitoring in Carbonate Fracture-Vuggy Reservoir: Taking T-Well Group of Tahe Oilfield as an Example

Carbonate fracture-vuggy reservoirs are one of the hot spots in oil and gas exploration development. However, it is extremely difficult to describe internal spatial structure unit understand interwell connection relationship. As a method measure reservoir characteristics feedback production information directly according detected concentration curve, tracer technology provides direct for people law oil-water movement heterogeneity widely used various domestic fields. Based on flow CFD simulation basic model, this paper establishes physical conceptual model studies influence three parameters (the velocity fluid passing through connected channel, diameter length channel) curve at outlet. In addition, different modes was studied classified scientifically. According simulation, can be into types: unimodal bimodal multimodal curve. Finally, injection-production well group T-well area Tahe Oilfield taken as an example, mode between injection wells further discussed has been verified, which reference connectivity analysis similar carbonate reservoirs.