Features of Strike-Slip Faults in Beier Sag, Hailaer Basin
详细信息
- 责任者：Tian Jiqiang (Research Institute of Petroleum Exploration and Development ; PetroChina ; Beijing 100083 ; China) ; Jia Chengzao
- 刊名：Natural Gas Geoscience
- 出版年：2011
- 卷期：22(2)
- 关键词：走滑断层 ; strike-slip faults ; 构造圈闭 ; structural traps ; 海拉尔盆地 ; Hailar Basin
- 页码：p.293-298
- 图表：5 illus., 17 refs.
- 分类号：0300
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
Beier sag is an important Early Cretaceous rift sag in the south of Hailaer Basin. By means of seismic profiles and time slices, the authors describe the typical structural characteristics of strike-slip faults, identify three groups of major strike-slip faults, and then discuss the genesis of strike-slip faults in the Beier sag. The development of these strike-slip faults are controlled by both early extension basement faults and late transtension stress field. On the other hand, the rock deformation made the simple shear in both Suderte district and Aonaohai district of central southern Beier sag, and formed the northeast-eastward strike-slip faults. The strike-slip faults are able to not only form the effective traps, but also improve the porosity and permeability of reservoir beds.