西南石油大学学报(自然科学版)

Previous Articles     Next Articles

Diagenesis of Volcanic Rock Reservoir in Kalagang Formation of
Carboniferous,Santanghu Basin

  

  • Online:2013-08-01 Published:2013-08-01

Abstract:

Based on the macroscopic well core observation,fine thin section observation and the petrochemistry analysis,the
diagenesis of carboniferous volcanic rock in Santanghu Basin are divided into 9 types and 4 diagenetic stages according to the
alternation feature and interrelationship of the volcanic rocks reservoir pore space. The Zeolites almond and full filled slits in
the stage of condense concretion diagenesis and burial-hydrothermal diagenetic stage provided the key material basis for the
weathering crust reservoir. In the stage of early and late epidiagenesis,intense corrosion of lyotrope in connective slits provided
the key action for the formation of the weathering crust reservoir. Then two kinds of weathering crust reservoir were formed:
eruption interval weathering crust reservoir and areal structure uplift denude weathering crust reservoir.

Key words: Santanghu Basin, carboniferous, volcanic rock reservoir, diagenesis, weathering crust