台内薄层礁滩型碳酸盐岩储层定量描述及控制因素——以珠江口盆地A地区为例

doi:10.11743/ogg20140317

Abstract

Abstract:

Reef-bank carbonate reservoirs is one of the important reservoir types in the petroliferous basins around South China Sea.Proved hydrocarbon reservoirs in A region of the Pearl River Mouth Basin are of reef-bank carbonate type.For a long time,the restriction of the low-resolution of seismic data and poor description of the effective reservoirs have seriously influenced the understanding of the distribution of the reef-bank reservoirs.The integration of various techniques such as frequency-expanding processing,sparse-spike inversion,physical property inversion and the 3D visualization made us successfully reveal the spatial distribution of the reef-bank reservoirs,delineate oil-water contact in combination with drilling data,and calculate the recoverable reserves of the reef-bank reservoirs.The appraisal wells emplaced based on the quantitative description results of the effective reservoirs flowed commercial oil and the drilling results coincide well with the reservoir description,confirming the practicability and effectiveness of the methods.Meanwhile,sedimentary faices belt and fresh water leaching dissolution caused by drops of 4^th-order sea level are also closed related with the development of reef-bank reservoirs.In addition,the direction of wind is another major controlling factor on the heterogeneity of reef-bank reservoirs.

Key words: reef-bank, thin reservoir, reservoir prediction, Pearl River Mouth Basin

CLC Number:

TE122.2

Zhang Xiangtao, Wang Xudong, Zhang Sufang, She Qinghua, Ai Jianfeng, Lei Chao. Quantitative description of intra-platform thin carbonate reservoirs of reef-bank facies and their controlling factors：a case from the A Region of Pearl River Mouth Basin[J]. Oil & Gas Geology, 2014, 35(3): 417-424.

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Quantitative description of intra-platform thin carbonate reservoirs of reef-bank facies and their controlling factors：a case from the A Region of Pearl River Mouth Basin

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