天然气工业2026，Vol.46Issue(2)：46-55,10.DOI:10.3787/j.issn.1000-0976.2026.02.005
基于地震分频构型反演预测煤系致密砂岩薄储层
Prediction of tight sandstone thin reservoirs in coal-bearing strata based on seismic frequency-division configuration inversion
摘要
Abstract
The thin reservoir of coal measure tight sandstone in Shenfu gas field in the eastern margin of Ordos Basin has the characteristics of low porosity,low permeability,strong heterogeneity and thin single sand body.Conventional prediction methods are difficult to meet the needs of fine characterization,which restricts the exploration and development of coal measure tight sandstone gas in this area.Therefore,combined with the'facies-controlled-logging-seismic'data,the reconstruction curves sensitive to lithology and fluid are integrated into the frequency-division configuration inversion to form a set of technical system suitable for the prediction of thin reservoirs in tight sandstone of coal measures in the eastern margin of Ordos Basin,and applied to the practical verification of the study area.The results show that:(1)The reconstructed pseudo-wave impedance curve can effectively indicate the gas-bearing reservoir,which provides a reliable parameter basis for subsequent configuration inversion.(2)The seismic inversion technology of frequency division configuration is controlled by facies,and the information of low(0-10 Hz),medium(10-100 Hz),high(100-200 Hz)and ultra-high(>200 Hz)frequency bands is fused,which significantly improves the prediction accuracy of seismic inversion for thin sandstone reservoirs in coal measures.(3)After verification of multiple wells that did not participate in seismic configuration inversion,the seismic inversion results were in agreement with the drilling results by 80%.Based on the prediction results,nine new wells were deployed,and the thickness of the drilled gas layer was 1.3-12.3 m,with a coincidence rate of 89%.It is concluded that the established comprehensive prediction technology system overcomes the technical bottleneck of thin reservoir prediction of coal measure tight sandstone in the eastern margin of Ordos Basin,and verifies its engineering practicability,which can provide reference for the exploration and development of coal measure tight sandstone reservoirs with other similar geological conditions.关键词
煤系地层/致密砂岩/储层预测/分频构型/特征曲线重构/随机反演Key words
Coal-bearing strata/Tight sandstone/Reservoir prediction/Frequency-division configuration/Characteristic curve reconstruction/Random inversion分类
天文与地球科学引用本文复制引用
史浩,师素珍,孙静月,林利明,王振国,赵康,郭俊超,张昀,赵思琪..基于地震分频构型反演预测煤系致密砂岩薄储层[J].天然气工业,2026,46(2):46-55,10.基金项目
国家自然科学基金面上项目"煤储层全频带频散与衰减机理研究及流体因子构建"(编号:42474186). （编号:42474186）
