TYPES OF CONDENSATED GAS RESERVOIR WITH OIL RIM AND EXPLORATION TARGET IN BANQIAO SAG
板桥凹陷带油环凝析气藏类型和成藏条件分析

Based on status of Banqiao exploration, according to natural gas origin, evolution, source-reservoir-seal assemblage, hydrocarbon phase characteristics, natural gas reservoir types are divided. After the summary of condensoted gas accumulation, the authors conclude that good source is the basis; the specific background leads to deep gas phase; secondary porosity offers the effective space; high pressure is the driving force of migration and accumulation and large-scale structural background offers the sites for deep gas accumulation. Therefore, these conclusions effectively instruct the deep gas exploration in Banqiao sag.