西南石油大学学报(自然科学版)

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Palaeoclimate and its Controlling on the Development of
Carbonate Beach and Bar

Wang Yanzhang1, Wang Xinzheng2, Shi Xiaohu3, Xiao Shuming2, Lu Da4   

  1. 1. Shengli Vocational College,Shengli Oilfield Company,SINOPEC,Dongying,Shandong 257000,China
    2. Xianhe Oil Production Plant,Shengli Oilfield Company,SINOPEC,Dongying,Shandong 257237,China
    3. Exploration and Development Research Institute,Changqing Oilfield Company,PetroChina,
    Xi’an,Shaanxi 710021,China
    4. Exploration and Development Research Institute,Liaohe Oilfield,PetroChina,Panjin,Liaoning 124010,China
  • Online:2013-10-20 Published:2013-10-20

Abstract:

Using the cryptogam method,index method of palaeoclimate,element vertical alteration analysis method,element
ratio method etc,we analyzed more than 300 examples in 20 wells and made a study of the palaeoclimate feature in Es4
sedimentation phase,and its influence on the development of carbonate beach and bar. The Es4 sedimentation phase corresponds
to the temperate environment where both the philotherm and therophyte develops well. It also corresponds to the moisture
environment where both the hydrophyte and xerophyte develops well. The lower part is of relatively low temperature and
is relatively dry while the upper part is of relatively high temperature and is relatively damp. The carbonate beach and bar
developing in the relatively arid area with moderate moisture since the relatively arid environment makes the evaporation
stronger and is favorable for the chemical rock formation and carbonate beach and bar development. On the other hand,the
suitable climate condition makes the palaeophyte gastropod and ostracodan develop in large quantity and is favorable for forming
the biology carbonate rock in lake facies.

Key words: carbonate beach and bar, palaeoclimate, the controlling action, the cryptogam method, Es4