【摘要】 由于火山岩储层的特殊性,其识别与预测是世界性难题,并引起了各油田的广泛重视,本次研究针对火山岩储层分布及预测进行研究。首先通过岩心观察和地质规律分析,长岭断陷的火山岩较为有利岩性为酸性火山岩,主要分布在长岭断陷的东南部及部分中部地区,基性、中基性火山岩物性相对差一些;在火山岩分布规律研究基础上,通过地震相的波形分析可以得出处于火山口到火山岩沉积相的转换带,储层物性较好,处于距离火山口较远的火山岩沉积相带或者火山岩溢流与沉积交互的相带,储层物性差。为对火山岩储层物性进行研究,利用稀疏脉冲反演对火山岩储层物性进行分析,稀疏脉冲反演能够直接从地震信息中提取反射信息,并且本次反演研究中采用符合火山岩的地质模型,经过反演运算得到了能够反应该区储层物性分布特征的结果。更多还原

【Abstract】 Because of the peculiarity of the igneous reservoir,the identification and forecast were hard problem in the world,and it was an importance problem for many oilfields,in this research,we did much research of the distribution characteristic forecasting techniques of the igneous reservoir.First of all,we used the core observation and distribution characteristic;the beneficial reservoirs was acidic volcanics in Changling fault depression,and main distributed in middle and southeast of the depression,the basic and neutral volcanic rock were poorer reservoir.On the basis of the research of the distribution characteristic,utilized the waveform analysis,and we sum up that the reservoir lied in the crater to the volcanic sedimentary facies was better,and the reservoir away from the crater was poor.And for the purpose of researching the reservoir physical property,we utilized the seismic inversion to analyze the property,and this technique can extract emission information from the seismic data,the geologic model of the igneous reservoir was used in the seismic inversion,and we got the preferable result of the seismic inversion.更多还原