Overview and research progress in logging recognition method of clastic reservoir diagenetic facies

Nowadays most of the oil and gas fields in china have come into the exploration and development stage of targeting the subtle oil and gas reservoirs, and for certain areas, the reservoir forming conditions such as source rock, tectonic and sedimentary facies are almost clear. Thus optimizing the high-quality reservoirs by the research of reservoir diagenetic facies is the emphasis and also the difficulty of petroleum exploration in this stage. But so far, the research of diagenetic facies still remains at an initial stage, and the key problem needed to be solved in the research of diagenetic facies is that recognition of diagenetic facies by logging data. Considering this, the controlling factors, division and naming schemes, logging identification principle of reservoir diagenetic facies are reviewed based on a large amount of literatures at home and abroad, and the logging response characteristics of diagenetic facies of typical clastic and carbonate reservoirs are summarized. It is pointed out that the key points of logging identification method of diagenetic facies are identifying the lithology; determining the types and strength of diagenesis, and calculating the content of diagenetic minerals. The spider web diagram is put forward to briefly characterize the diagenetic facies. Lastly, the existing problems in the logging recognition of diagenetic facies are discussed in this article, and the future development of logging identification method of diagenetic facies is forecasted. This overview and introduction research on the preexisting researches on logging recognition method of diagenetic facies will promote the development of diagenetic facies and the application of diagenetic facies in predicting favorable reservoirs.