China Petroleum Exploration ›› 2021, Vol. 26 ›› Issue (2): 77-84.DOI: 10.3969/j.issn.1672-7703.2021.02.008

Previous Articles     Next Articles

Provenance analysis of Cretaceous Yageliemu Formation in the Yangta 11 well block, Tarim Basin#br#

Cheng Ming1, Liu Yongfu1, Liu Yunhong2, Sun Qi1, Zhou Siyu1, Jiang Jun1   

  1. 1 Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company; 2 Research Institute of BGP INC., CNPC
  • Online:2021-03-15 Published:2021-03-15

Abstract: In order to understand the provenance of Cretaceous Yageliemu Formation in the Yangta 11 well block, comprehensive
analysis is carried out by the petrology, cathodoluminescence mineralogy, and seismic attribute analysis techniques. As a result,
the provenance direction is confirmed and sedimentary facies identified. Detail analysis of rock composition and cathodoluminescence (CL) characteristics of Cretaceous Yageliemu Formation in the Yangta 11 well block reveals that there are many granitic textures in lithics, the CL of quartz is mainly purple, and the CL of potash feldspar is mainly bright blue, which are consistent with the CL characteristics of metamorphic granite in Well Qiman 1, but different from those of metamorphic rock in Well Wencan 1 and basalt rock in Well Yingmai 35-1. It is concluded that the provenance of Yageliemu Formation in the Yangta 11 well block is the Proterozoic metamorphic granite from the Luntai Bulge in Tabei Uplift. According to the analysis of seismic attributes,it is further clarified the east-westward spatial distribution of sand body and braided river delta sedimentary facies in the
Yangta 11 well block.

CLC Number: