Forming Mechanism of High Quality Reservoirs of Tertiary in the Southern Margin of Junggar Basin and Forecasting Before Drilling

Tertiary Junggar Basin has been subjected to a shrinking period.Affected by the Yanshan orogeny, especially the Himalayan movement,the Tianshan Mountain continued to rise,leading the southern margin to the sedimentary environment with steep slope and speed deposition.The major depositional facies in Ziniquanzi Formation is generally a set of delta under the setting of lake transgression,belonging to single deposi-