基于岩石物理模版的碳酸盐岩含气储层定量解释

doi:10.13278/j.cnki.jjuese.201502304

摘要/Abstract

摘要：

笔者针对碳酸盐岩储层勘探开发面临的储层预测与流体识别难度大的问题,基于岩石物理理论,提出了一种对碳酸盐岩含气储层进行定量解释的方法:首先,综合碳酸盐岩地质和测井信息,以岩石物理理论为依据,实现了适用的碳酸盐岩岩石物理模型的构建;然后基于岩石物理模型优选出对孔隙度、含气饱和度较为敏感的参数λρ和μρ,构建能够反映储层孔隙度与含气饱和度的碳酸盐岩岩石物理模版;最后,将岩石物理模版与工区反演提取的参数相结合,确定储层分布范围,并对储层范围内孔隙度和含气饱和度数值进行了定量解释。实例分析表明,基于该模版定量解释得到的孔隙度和含气饱和度与实际地层孔隙度及产气结果基本一致,经验证碳酸盐岩岩石物理模版的可靠性和适用性较好。

关键词: 碳酸盐岩, 岩石物理模版, 储层参数, 定量解释

Abstract:

In the process of carbonate reservoir exploration and development, it is difficult for reservoir prediction and fluid identification. Aiming at this problem, we put forward a quantitative prediction method through making carbonate gas reservoir parameters based on the rock physics theories. First of all, considering the geological and well logging information of carbonate rock and according to the rock physics theories, we establish the carbonate rock physics model; and further we optimize the sensitive parameters (λρ and μρ) with the change of porosity, gas saturation, and establish the rock physics template for quantitative interpretation. Finally, the template and extracted parameters from seismic inversion were combined to decide the reservoir distribution and quantitatively interpret the porosity and gas saturation within the range of reservoir. The example analyses show that the porosity and gas saturation getting by our carbonate rock physics template are basically identical with the actual gas production and porosity. The reliability and applicability of carbonate rock physics template are thereby verified.

Key words: carbonate rocks, rock physics template, reservoir parameters, quantitative interpretation

中图分类号:

P631.4

张广智, 陈娇娇, 陈怀震, 张金强, 印兴耀. 基于岩石物理模版的碳酸盐岩含气储层定量解释[J]. 吉林大学学报(地球科学版), 2015, 45(2): 630-638.

Zhang Guangzhi, Chen Jiaojiao, Chen Huaizhen, Zhang Jinqiang, Yin Xingyao. Quantitative Interpretation of Carbonate Gas Reservoir Based on Rock Physics Template[J]. Journal of Jilin University(Earth Science Edition), 2015, 45(2): 630-638.

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