METHODS FOR CLASSIFICATION OF SEDIMENTATION FACIES OF UNDERGROUND OIL AND GAS RESOURCES OR DEPOSITS

摘要

1. A method for classifying sedimentary facies corresponding to an underground oil or gas reservoir or field, comprising the following steps: analyzing a plurality of cores obtained from a plurality of wells drilled in a formation or field zone; analyzing a plurality of well logs obtained from a plurality of wells and containing different types of logs; preliminary classification of sedimentary facies for at least some sections of the oil or gas field of an asta or deposit based on the results of core analysis and logs; determining the presence of at least one of the core samples analyzed by at least one diagenetic, heavy, light mineral or mineral having anomalous characteristics; determining at least one type of logs from many different types of logs, which provides essentially accurate identification of the presence in the well of at least one diagenetic, heavy, light mineral, or inerala having an anomalous characteristic, in case of detection of at least one of diagenetic, heavy, light mineral or a mineral having anomalous characteristics of at least certain of the core subjected to analysis; and re-analysis and re-classification of preliminary classification data of sedimentary facies based on the results of core analysis, well log analysis, determination of the presence of a diagenetic, heavy, light mineral or a mineral having anomalous characteristics