Oil & Gas Geology ›› 1998, Vol. 19 ›› Issue (4): 330-336,345.doi: 10.11743/ogg19980413

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RESERVOIR PORE STRUCTURES AND ITS APPLICATION TO OIL POOLS ESSESSMENT IN SHIWU FAULTED DEPRESSION,SOUTH SONGLIAO

Zhu Luzhong1, Zhao Xiumei1, Wang Guangyun2, Liu Jian3   

  1. 1. Research Institute of Petroloum Exploration and Development, Northeast Bureau of Petroleum Geology, Jilin, Changchun;
    2. Research Institute of Petroleum Exploration and Development, Daqing Petroleum Administration, Daqing, Heilongjiang;
    3. Research Institute of petroleum Exploration, CNSPC, Jingzhou, Hubei
  • Received:1998-04-24 Online:1998-12-25 Published:2012-01-18

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Abstract:

The pore structures of reservoirs in Shiwu faulted depression,south Songliao Basin could de divided into five types according to capillary pressure curves.Different facies zones may have different pore strutures.The pore stucture of fine sandstone in river channel,flood plain,shallow lake and sand bar facies zones are the best and belong to type I and type Ⅱ ;those of deep fan delta,subaqueous fan sandrocks are better and belong to I Ⅲ types.In oil pool essessment,the poorer the pore structures are,the higher the critical oil column and the thicker the oil water transitional zone would be.Under the same oil column,Xiaowujiazi structure is more favourable for oil and gas accumulation,and the Denglouku Formation in Aijiawobu,Xidingjia Pijiawobu is more favourable for searching gas.