Prediction of the Secondary Porosity Zone of Fuyu Oil Layer in the 〖JZ〗West of Daqing Placanticline
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摘要: 为了在普遍低孔、低渗的背景下寻找次生孔隙发育的储层，在次生孔隙形成机制分析和储层成岩作用研究的基础上，结合考虑影响次生孔隙形成的多种因素，对大庆长垣以西地区扶余油层次生孔隙发育区进行预测。研究表明，该地区次生孔隙的形成主要受青山口组下排有机酸和碳酸的影响，且受到断层的控制和超压的影响，次生孔隙主要分布在齐家地区和龙虎泡阶地等凹陷周边区域，在西部斜坡区亦发育由大气水淋滤所形成的次生孔隙。在次生孔隙发育区，若发育岩性圈闭或构造圈闭，则为有利的油气聚集场所。
Abstract: In order to find the reservoir which develop the secondary porosity in the context of generally low porosity and low permeability, on the basis of the analysis of contributing factor of secondary porosity and diagenesis research of the reservoir, Combined impact of the formation of secondary porosity factors, we have predicted the porosity developed area of Fuyu oil layer in the West of Daqing placanticline. Research shows that secondary porosity in the region is mainly affected by the formation of carbonate and organic acids which come from Qingshankou group, and by the impact of fault controlled and overpressure, secondary porosity mainly distributed in the surrounding region of Qijia sag, Gulong sag and Longhupao terrace, some secondary porosity distributed in the western slope which developed by meteorological water eluviations.-
Key words:
- diagenesis /
- organic acid /
- corrosion /
- fault /
- overpressure /
- the secondary porosity
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