Lithologic characteristics of the productive unit Yu1 of the Malorechenskiy oil field (Tomsk region)

This article presents the results of study of the geological structure of the Malorechen-skoye oil field and the production unit Yu1. The variation of the lithological composition and petrographic characteristics of the Upper Jurassic sediments at the area was considered. Interpretation of the borehole logging data showed that the inhomogeneous productive unit Yu1 is composed of several interbedded layers. Locally, these beds are bounded with predominantly clayey and clay-carbonaceous layers.