Study of characteristic of petrology and diagenesis in Jin 31-Jin 146 well area, Liaohe depression, Bohai Bay Basin

摘要

Jin 31-Jin 146 well area, Liaohe depression, Bohai Bay has a complicated structure, from the conditions in recent years, some of the oil and gas well production was not consistent with the performance of adjacent Wells, because of never done fine geologic research in Jin 24 pieces and Jin 33 wellblock, there was unconfirmed structure and low degree of awareness of the main purpose and main research layer section, conventional cognition is difficult. To fully tap the work area of oil and gas potential, it was necessary to carry out the work area related geological research. This paper applied data logging interpretation results, chip information, grading analysis and physical properties such as test data to srudied the petrology characteristics and discussed the diagenesis. The results showed that there was poor physical properties of the work area, compaction is relatively weak, with the increase of buried depth the diagenesis enhancement and physical property becomes poor.