Seismic Interpretation in Kunbei Area of Qaidam Basin
详细信息
- 责任者：Guan Junya (Geological Research Center ; GRI ; BGP Inc. ; CNPC ; Zhuozhou 072751 ; China) ; Li Hongge
- 刊名：Oil Geophysical Prospecting
- 出版年：2012
- 卷期：47(1)
- 关键词：地震勘探 ; seismic exploration ; 储层预测 ; reservoir prediction ; 柴达木盆地 ; Qaidam Basin
- 页码：p.157-165
- 图表：13 illus., 10 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
The geologic structure of Kunbei area of Qaidam Basin is discovered through interpretation of amount of 2D and 3D seismic data.The structural features and details are implemented using pre-stack depth migration and interpretation.Commercial pool are found from Q16 and other wells using sequence stratigraphy.The result indicates that the structural framework of Kunbei area shows north-south zonation and east-west segregation,and three tectonic units including Qiexi slope belt-Qiekelike sag-Wudong slope belt,southern piedmont sag belt and central Kunbei fault-step belt are divided by the first-order faults.The upfaulted block faults of the Kunbei fault with mainly SN or NE or NW strike are more broken nearby the major fault and a large number of small faults around.Stratigraphic overlap trap in Lulehe group(E1+2) of Q16 well zone is found.The glutenite of lake system tract is mainly reservoir section and a more stable mudstone with 20~40m thick nearby the maximum flooding surface is regional cap rock.All of these are conducive to form the strati-lithologic trap.Using hydrocarbon detection technology,it is found that the main oil Lulehe group(E1+2) is located near the Q163 well.Prospective oil-bearing area of Q16 well is 33km2.A 12km2 new oil-bearing area located in the east of Q15 well is found.In short,prospective oil-bearing area by hydrocarbon detection is consistent with drilling results.