The Research of Gas Flooding of Horizontal Well with SRV in Tight Oil Reservoir

In recent years, it is become a hot spot to develop unconventional reservoirs, such as tight oil, tight gas and shale gas.Tight oil is a typical unconventional resource, which has the characteristics of good fluid properties and poor reservoir properties. The permeability and porosity of tight oil reservoir are general less than 1×103μm2 and 10%, respectively. Currently, the unconventional reservoirs are usually developed by horizontal wells, especially the segmented multi-cluster fractured horizontal wells, which have been widely used worldwide. The simulated reservoir volume (SRV) can be formed around the horizontal well after segmented multi-cluster fracturing. 

The technology of SRV is to achieve the important goal of increasing the contact area between matrix and fractures or fracture network as far as possible during the development of unconventional reservoirs. The study and application of developing tight oil and shale oil reservoirs mostly focus on the natural depletion. But some studies have shown that CO2 flooding is an effective approach of enhanced oil recovery (EOR) in tight reservoirs. Read more..............