碳酸盐岩成岩相研究方法及其应用——以扬子地块北缘飞仙关组鲕滩储层为例

成岩相是研究成岩作用展布的重要方法和途径,其与沉积相不同,反映岩石在一定的成岩环境下发生的各种成岩作用的综合表现。在详细的成岩作用和成岩环境研究的基础上,划分了扬子地块北缘地区飞仙关组8类成岩相、7类成岩亚相,总结了各类成岩相(亚相)的识别标志,探索了成岩相与沉积相、测井相、地震相的关系,探索了成岩相在点、线、面上的分布,预测了有利成岩相区展布,取得了良好效果。形成了一套有效的成岩相研究方法,并将成岩相研究成果应用到勘探实践,具有较好的推广价值。

Methods for diagenetic facies research on carbonate rocks and its application: Example from oolitic beach reservoir of the Feixianguan Formation in the northern margin of Yangtze block.

Diagenetic facies is an important approach to study diagenesis distributing. It is integrative representation of all kinds of diageneses occurring in definite diagenetic environment. Based on the detailed study of diagenesis and diagenetic environment, eight types of diagenetic facies and seven types of diagenetic subfacies are divided in Feixianguan Formation, northern margin of the Yangtze block. All kinds of identification labels are summarized. The authors discussed the relationship between diagenetic facies and sedimentary facies, log facies, seismic facies, as well as the diagenetic distributing characteristic on spot, line and plane. Favorable exploration targets and belts were predicted. The effective research approach of diagenetic facies summarized by this paper is worth popularizing in oil and gas exploration.