Abstract：Guantao formation in Kongdian Oilfield,Dagang belongs to near-source braided river deposits which is characterized by thick reservoirs and encased-mud sandbodies.In general reservoirs are of high prorosity and high permeability,and they are complicated,.Based on these characteristics,the previous studies were guided by structural reservoirs ideas.However,in the recent development,increasing low-oil and high-water reservoirs occurs.That means the accumulation regularity is rather complex and reservoir distribution and changes are not clear.So stratigraphic reservoir research and fine reservoir prediction are needed.We put forward in this paper an approach to sovle the problem.First we analyze the sedimentary background of the region on strata slices.Then based on forward modeling sedimentary facies belts are classified with the 90° phasing and frequency decomposition.Finally oil potential is predicted with fluid activity properties.
Wang Fenglan,Bai Zhenqiang,Zhu Wei.Study on geological 3D reservoir architecture modeling and distribution of remaining oil of different development stage in meandering reservoir.Acta Sedimentologica Sinica,2011,29(3):512-520.
Hou Jiagen,Liu Yuming,Xu Fang et al.Architecture of braided fluvial sandbody and origin for petroliferous difference of the Guantao Formation in Kongdian Oilfild of Huanghua Depression.Journal of Palaeogeography,2008,10(5):459-464.
[4]
吴元燕,付建林,周建生等.歧口凹陷含油气系统及其评价.石油学报,2000,21(6):18-22.
Wu Yuanyan,Fu Jianlin,Zhou Jiansheng et al.Evaluation of hydrocarbon system in Qikou Sag.Acta Petrolei Sinica,2000,21(6):18-22.
[5]
Zeng Hongliu,Backus M M.Interpretive advantages of 90° phase wavelets,Part 1:Modeling.Geophysics,2005,70(3):C7-C15.
[6]
Partyka G,Gridley J,Lopez J.Interpretational applications of spectral decomposition in reservoir characterization.The Leading Edge,1999,18(1):353-360.
[7]
Silin D B,Korneev V A,Goloshubin G M et al.A hydrologic view on Biot's theory of poroelasticity.2004,Paper LBNL-54459.
