- 责任者：Xu Hong (Exploration and Development Research Institute ; Daqing Oilfield Company ; Daqing 163712 ; China)
- 刊名：Petroleum Geology & Oilfield Development in Daqing
- 出版年：2013
- 卷期：32(4)
- 关键词：油气藏形成 ; reservoir formation ; 成藏模式 ; pool-formed model ; 渤海湾盆地 ; Bohaiwan Basin
- 页码：p.11-14
- 图表：4 illus., 16 refs.
- 分类号：1003
- issnNo：ISSN1000-3754
- isbnNo：CN23-1286/TQ
On the basis of analyzing the types of oil reservoirs and petroleum distribution laws, the studies of the main controlling factors and models for the petroleum accumulation of BZ28-20ilfield are conducted with the help of the researching method of the spacial matching between the petroleum distribution and the conditions of the reser- voir accumulation. The results show that the accumulation in South Bohai-Bay Basin is generally controlled by the following four main factors： oil source, faults, sandstone-formation ratio and structures. In detail, the faults in the oil source are the principal transporting pathways for the petroleum migration ; the size of the ratio controls the later- al diverting and migration position of the hydrocarbon ; the normal structures near the faults are the favorable places for oil and gas to accumulate, and moreover the activities in the late fault period have damaged the sealing perform- ance of the early faults, so the petroleum is difficult to preserve. The petroleum accumulating model is that when the hydrocarbon generated in underlying Es3 source rock migrating to Nm I along the oil-source faults, because of the seal of Nm II regional caprock, the hydrocarbon migrates laterally to Nm I with high sandstone-formation ratio and accumulates in the faulted anticlines, fault blocks and fauh-lithological reservoirs on the positive structures near the oil source faults.