Application of pyrolysis in studying catagenesis of the organic matter of Mesozoic sediments in the Yenisei-Khatanga and northeastern Pur-Taz petroliferous areas

The technique of pyrolysis and its application in studying the organic matt er (OM) of Mesozoic sediments in the Yenisei-Khatanga and northeastern Pur- Taz petroliferous areas are described. The plots T-max-R-o (vitrinite refle ctance) obtained on a "Rock-Eval" device and on a pyrolyzer designed at the UIGGM are compared. The limiting T-max values for various zones of OM cata genesis are determined, and the standard curve T-max-D (depth) for the stud ied areas is constructed. The applied technique permitted revealing depth z oning of OM catagenesis in many drilling areas which could not be studied e arlier for Lack of the necessary OM.