大牛地气田大12—大66井区沉积微相与储层产能关系

doi:10.11743/ogg20120106

Abstract

Abstract:

Based on sediment supplies,sedimentary hydrodynamic conditions,channel structures and features,the paper discusses the relationship between the vertical/lateral structures of the sedimentary microfacies and reservoir productivity in Da12-Da66 wellblocks,Daniudi gas field.The result indicates that the combinations of source supplies and sedimentary hydrodynamic conditions affectes the vertical distribution of reservoir productivity.Under the condition of abundant sediment supplies,stable and strong hydrodynamic conditions,the formations are mostly payzones with medium to high productivity.Reservoirs in the central part of distributary channel microfacies have been commonly tested relatively stable productivity and are mostly payzones with medium to high productivity.In contrast,reservoirs at the edge of distributary channel have been usually tested with the feature of unstable productivity.The payzones with medium to high productivity grow usually in the intersection of two channels with strong hydrodynamic conditions.In addition,because of complexity of meander channel and great shape changes,it is difficulty to identify and discover.Generally,productivity is lower for unstable channel except for areas with strong hydrodynamic conditions.The study results coincide with the production tests in Da12-Da66 wellblocks.

Key words: channel structure, sedimentary hydrodynamic condition, sedimentary microfacies, productivity, sediment supply, tight sandstone, Daniudi gas field

CLC Number:

TE121.3

Liu Shuanglian, Li Hao, Zhou Xiaoying. Relationship between sedimentary microfacies and reservoir productivity in Da12-Da66 wellblock,Daniudi gas field[J]. Oil & Gas Geology, 2012, 33(1): 45-49,60.

References

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Relationship between sedimentary microfacies and reservoir productivity in Da12-Da66 wellblock,Daniudi gas field

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