石灰岩、白云岩储层孔隙度-渗透率关系研究

doi:10.11743/ogg20080616

Abstract

Abstract:

One of the important topics of the study on carbonate reservoirs is how dolomitization influences reser-voir properties.The most important and most common understanding is that perhaps under deep burial,the poro-sity and permeability of dolomite are higher than that of limestone.Yet there are few quantitative evidences for this difference.Though most case studies show the porosity of dolomite is higher,there are some exceptions. Based on the interrelations between porosity and permeability of five core examples from carbonate platforms with different depositional settings,different geologic ages and different burial depths,this paper explores the similari-ties and differences between dolomite and limestone reservoirs.For cores sampled from shallow-buried platforms, the average porosity of dolomite is similar to that of limestone but permeability of dolomite is higher than that of limestone.While for cores sampled from deep burial platforms,the average porosity of limestone is much lower than that of the adjacent dolomite,but their interrelations of porosity-permeability are almost the same.

Key words: porosity, permeability, limestone reservoir, dolomite reservoir, dolomitization

CLC Number:

TE122.2

Xu Weisheng, Zhao Peirong, Nie Pengfei, Wang Xiande. Porosity-permeability interrelation of limestone and dolomite reservoirs[J]. Oil & Gas Geology, 2008, 29(6): 806-811.

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Porosity-permeability interrelation of limestone and dolomite reservoirs

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