Abstract
Diagenetic facies are rock bodies that reflect the synthesis of diagenetic characteristics and determine the exploration of favorable reservoirs. A study of the diagnenetic facies of Paleocene sandstones in Lishui Sag (China) was undertaken to unravel the controls on reservoir quality. Samples were studied using petrography, thin sections, scanning electron microscopy, and X-ray diffraction, and thus nine types of diagenetic facies were identified. Reservoir quality is mainly controlled by unstable grains dissolution facies and siderite cementation facies.
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