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Natural Gas Geoscience ›› 2003, Vol. 14 ›› Issue (2): 87-91.doi: 10.11764/j.issn.1672-1926.2003.02.87

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FORMING CON DITION OF HIGH-QUALITY RESERVOIR AND ITS RELATIVEPROBLEMS IN LOW POROSITY AND PERMEABILITY ENRICHMENT ZONE

WANG Duo-yun, ZHENG Xi-min, L I Feng-jie, WANG Feng,LIU Zi-liang, WANG Zhi-kun, LI Shu-tong   

  1. (Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou   730000, China)
  • Received:2002-02-24 Revised:2003-03-28 Online:2003-04-20 Published:2003-04-20

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Abstract:

Pertoleum accumulation of low porosity (is smaller than 12% in general)and perme ability (in mostly is 1×10-3μm2 or so)of fragmental rock which become s reservoir is the most primary types of pertoleum accumulations at stabilize cr atonic basin or superposed basin in center and west areas of our country. Howeve r it find that there are many prolific oil and gas accumulations which have high -quality reservoir sandstones in low porosity and permeability oil and gas zone s by the recently exploration. The authors discuss the forming condition of the  high-quality reservoirs from the structure, sediment and diagensis of high-qua l ity reservoirs formation and enumerate much element. Expound the principle and m ethod basis that describe and discriminate them. Authors believe that original c omposition and structure of reservoirs are the most crucial element which effect  the feature of physical property, congenital provenance condition is ultimate s ource of high-quality reservoir. It is important to explain their genetic from  tectonic and deposit environmental condition.

Key words: Low porosity and permeability oil and gas zones, Formation of high-quality reservoir, Ectonic deposit condition.

CLC Number: 

  • TE122.2

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