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Paleogeomorphologic Controls on the Formation and Distribution of High-Quality Reservoirs During Lake Transgression: An example from the Qingshuihe Formation in Gaoquan structural zone, Sikeshu Sag, Junggar Basin
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XueQiang SI1, Bo PENG1, HuaJun GUO1, XiGuang CHEN1, YaZhe LI1, DongSheng JI2, ZhiWen ZOU1, JunFeng YI1
Acta Sedimentologica Sinica | 2026, 44(2) : 664 - 675
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Acta Sedimentologica Sinica | 2026, 44(2): 664-675
Paleogeomorphologic Controls on the Formation and Distribution of High-Quality Reservoirs During Lake Transgression: An example from the Qingshuihe Formation in Gaoquan structural zone, Sikeshu Sag, Junggar Basin
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XueQiang SI1, Bo PENG1, HuaJun GUO1, XiGuang CHEN1, YaZhe LI1, DongSheng JI2, ZhiWen ZOU1, JunFeng YI1
Affiliations
  • 1.PetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, China
  • 2.Geophysics Institute of Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Urumqi 830013, China
Published: 2026-04-10 doi: 10.14027/j.issn.1000-0550.2024.042
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Objective The reservoirs in the bottom conglomerate of the Qingshuihe Formation in the Gaoquan structural zone of the Sikeshu Sag， southern Junggar Basin， are strongly heterogeneous. The objective was to clarify the development and distribution of high-quality reservoirs in the study area. Methods The sedimentary and reservoir characteristics of the Qingshuihe Formation were examined by facies analysis in cores， well logs and seismic records， and a model of the sedimentary evolution was established based on paleogeomorphological data. The influence of microgeomorphology on the distribution of high-quality reservoirs is clarified. Results Three slope breaks developed in the Gaoquan structural zone， each striking northwest-southeast and comprising groove and platform paleogeomorphological units. A regressive fan delta was formed on the slope breaks during lake transgression， each of which formed conglomerate reservoirs 10-15 m thick. Groove and platform areas controlled the mud content of the reservoirs. Brown conglomerate with high mud content readily developed in the groove areas. Gray or gray-green conglomerate with low mud content developed in the platform areas， forming high-quality reservoirs. Conclusions Groove/platform units at slope breaks controlled the formation and distribution of high-quality reservoirs in the Qingshuihe Formation. The most favorable reservoirs in the study area are in the platform units at each slope break.

Gaoquan structural zone  /  Qingshuihe Formation  /  paleogeomorphology  /  slope break zone  /  fan delta
XueQiang SI, Bo PENG, HuaJun GUO, XiGuang CHEN, YaZhe LI, DongSheng JI, ZhiWen ZOU, JunFeng YI. Paleogeomorphologic Controls on the Formation and Distribution of High-Quality Reservoirs During Lake Transgression: An example from the Qingshuihe Formation in Gaoquan structural zone, Sikeshu Sag, Junggar Basin[J]. Acta Sedimentologica Sinica, 2026 , 44 (2) : 664 -675 . DOI: 10.14027/j.issn.1000-0550.2024.042
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  • The Fundamental Forward-looking Major Project of PetroChina(2023ZZ02)
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Year 2026 volume 44 Issue 2
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Article Info
doi: 10.14027/j.issn.1000-0550.2024.042
  • Receive Date：2024-03-10
  • Online Date：2026-09-17
  • Published：2026-04-10
Article Data
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History
  • Received：2024-03-10
  • Revised：2024-04-06
  • Accepted：2024-04-09
Funding
The Fundamental Forward-looking Major Project of PetroChina(2023ZZ02)
Affiliations
    1.PetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, China
    2.Geophysics Institute of Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Urumqi 830013, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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