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储层物性纵向上差异较大,且纵向上孔隙度和渗透率间的正相关性较为明显,渗透率在纵向上的规律并不明显。测井解释孔隙度的误差较小,可用于储层孔、渗的平面分布图。山西组具有相对较大的渗透率差异,河道砂体展布和含气层段分布与高值区段也有较好的相关性,强烈表明了储层的非均质性。本溪组各井中储层孔隙度最大值为6.4%,最小为0.5%,平均值2.9%。本区控制储集砂体展布及储集砂体孔隙度和渗透率变化的沉积微相主要是三角洲前缘水下分流河道,其砂体比较发育。研究发现:孔隙度、渗透率的变化是与石英含量变化呈正相关的,同时,随着岩屑含量的增加,孔隙度和渗透率降低。本区孔、渗、饱的高值区即为石英砂岩的发育区。
The physical properties of reservoirs vary widely in vertical direction, and the positive correlation between porosity and permeability in longitudinal direction is obvious. The vertical permeability law is not obvious. Logging interpretation of the porosity error is small, can be used for reservoir holes, infiltration of the plane distribution. The Shanxi Formation has a relatively large difference in permeability. There is also a good correlation between the distribution of channel sand bodies and the distribution of gas-bearing intervals and high value intervals, strongly indicating reservoir heterogeneity. The maximum porosity of each well in Benxi Formation is 6.4%, the minimum is 0.5% and the average is 2.9%. The sedimentary microfacies that control the variation of porosity and permeability in the reservoir sandstone distribution and reservoir sandstone in this area are mainly the submarine distributary channel in the delta front and the sand body is relatively developed. The results show that the change of porosity and permeability is positively correlated with the change of quartz content, meanwhile, the porosity and permeability decrease with the increase of cuttings content. Hole, infiltration, full of high-value area is the development of quartz sandstone.