尚尧
SHANG Yao

• 1:东北石油大学地球科学学院

摘要(Abstract)：

乌尔逊凹陷是一个多期叠合和多期改造的中生代断陷盆地,建造与改造交互作用导致了地层的形成和剥蚀。通过地震剖面分析,建立了5种建造模式(单断式、单断断阶式、单断断槽式、断裂型断坳、非断裂型断坳)和3种改造模式(滑脱式、旋转式、断隆式)。在利用单井声波时差法恢复为控制点、地震剖面上建立剥蚀模式的基础上,以地层厚度趋势法在平面上求取剥蚀量。结果表明:乌尔逊凹陷南屯组各油层组的剥蚀厚度及范围由下到上逐渐增加,剥蚀的轴线由东向西迁移,现今南屯组油气藏与该期所发育的古构造具有很好的配置关系。
Wuerxun Sag is a Mesozoic fault basin experienced multi-phase superimposition and tectonic activities,where the interaction between the construction and reform has formed strata and erosion.Through the analyses of seismic profiles,five kinds of the construction modes(single fault type,single fault bench type,single fault trough type,faulted and non-faulted type fault sags) and three kinds of reform modes(slip type,rotary type,uplift type) have been established.On the basis of the control points by single-well interval transit time restoring method and the denudation modes on the seismic profiles,the planar denudation amount is souhgt with the help of formation thickness trend method.The results show the denuded thickness and range in each oil group of Nantun Formation in the sag gradually increase from bottom to top,the denuded axis migrates from the east to the west,and at present Nantun Formation petroleum reservoirs possess much better matching relations with the synchronous palaeostructure developed.

关键词(KeyWords)： 建造模式;改造模式;剥蚀量;构造变形趋势法;乌尔逊凹陷
construction mode;reform mode;redenuded amount;tectonic deformation trend method;Wuerxun Sag

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(41030426)资助

作者(Author): 尚尧
SHANG Yao

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