›› 2017, Vol. 38 ›› Issue (3): 1-1.doi: 10.7657/XJPG20170304

   

Characteristics and Genesis of Fan Deltas of Xiazijie Formation in Halaalate Mountain Area, Junggar Basin

CHEN Xueguo1, ZHONG Weiping1, XU Houwei2, ZHANG Guanlong1, WANG Youtao1   

  1. (1.Western New Area, Research Institute of Exploration and Development, Shengli Oilfield Company, Sinopec, Dongying, Shandong 257000, China; 2.Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamary, Xinjiang 834000, China)
  • Online:2019-01-01 Published:1905-07-15

Abstract: Middle Permian Xiazijie formation in the Hala’alate Mountain area of Junggar basin is a set of thick, near-source fan delta depositions, which are incised and superimposed vertically with a complex sedimentary framework. The comprehensive study result shows the fan deltas in the western part of Hala’alate Mountain are obviously different from the ones in the eastern part in facies markers, transportation mechanism and sand body characteristics and so on. Based on the core data, log data and analysis of petrophysical and electrical properties, it is considered that the near-mountain fan delta dominated by steep-slope gravity current is developed in the western part, and near-fan fan delta dominated by gentle-slope tractive current is found in the eastern part of the Hala’alate Mountain, and the two types of fan deltas have distinct reservoir properties and different distribution patterns, which could be a guidance for oil and gas exploration

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