Research on Gas Channeling Identification Method for Gas Injection Development in High-Pressure Heterogeneous Reservoir

In a typical ultra-deep high-temperature and high-pressure heterogeneous reservoir in Xinjiang, gas channeling quickly occurs during injection because of the heterogeneity reservoir, low viscosity injection, high gas-oil fluidity ratio. The identification prediction methods development were studied. First, discrimination parameters determined by numerical simulation method. According to ratio oil produced composition produced, flow stages formation fluid divided into five regions: phase zone, two-phase miscible dissolved original zone. basis for (namely, field characterization discrimination) was discovered through analysis knowledge operability monitoring data as following two parameters: (1) C1 content rising again on previous platform when trailing edge zone is (2) continuous rise production. Then, considering characteristics under different pressures exploitation process ratio) simulated determined. Thus, method established reservoirs. this approach, developed, judgment carried out effective D1 well. results tracer detection compared verify accuracy method, leading strong support slowing down channeling.