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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2013  >  35(1): 42-47
Zhuo Qingong, Li Yong, Song Yan, Yang Xianzhang, Zhao Mengjun, Fang Shihu, Liu Shaobo, Lu Xuesong. Evolution of Paleogene saline deposits and effectiveness of traps in Kelasu tectonic zone, Kuqa Depression, Tarim Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2013, 35(1): 42-47. doi: 10.11781/sysydz201301042
Citation: Zhuo Qingong, Li Yong, Song Yan, Yang Xianzhang, Zhao Mengjun, Fang Shihu, Liu Shaobo, Lu Xuesong. Evolution of Paleogene saline deposits and effectiveness of traps in Kelasu tectonic zone, Kuqa Depression, Tarim Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2013, 35(1): 42-47. doi: 10.11781/sysydz201301042
shu

Evolution of Paleogene saline deposits and effectiveness of traps in Kelasu tectonic zone, Kuqa Depression, Tarim Basin

doi: 10.11781/sysydz201301042
  • 1.

    Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China

  • 2. Research Institute of Petroleum Exploration and Development, Tarim Oilfield Company, PetroChina, Korle, Xinjiang 841000, China

  • Received Date: 2012-03-05
  • Rev Recd Date: 2012-11-28
  • Publish Date: 2013-01-28
    Abstract
  • Saline deposits are good regional cap rocks in petroliferous basins, yet not perfect. Research shows that saline deposits are characterized by "embitterment at low temperature and plastic deformation at high temperature". The sealing capacity of saline deposits changes with burial depth, and the depth from 3 000 to 3 200 m is critical to the capping effectiveness of saline deposits in the Kelasu tectonic zone. The effectiveness of subsalt trap accumulations is influenced by the evolution of saline deposits. The key time for the closing of cap rocks in the anti-cline zone of Kesalu is the middle and late Kuqa periods, and the main exploration targets are the complete anticline traps buried over 3 200 m deep. In the deep zone of Kelasu, the key time for the closing of cap rocks is the early and middle Kuqa periods, and petroleum may be trapped in subsalt blocks and broken anticlines when faults are laterally sealed. Research fits the status of exploration, and helps to improve exploration success rate.

     

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