Clay mineral of illite/montmorillonite mixing layer, kaolinite, illite etc. and carbonate mineral of calcite etc. exist in Chunhuazhen reservoir in Guangli oilfield.

• 广利油田纯化镇储集层中存在伊/蒙混层、高岭石、伊利石等粘土矿物及方解石等碳酸盐矿物。