石炭-二叠系煤系非常规天然气储层地球物理预测技术应用研究  

Application of Geophysical Prediction Technology for Unconventional Gas Reservoirs in Carboniferous and Permian Coal Measures

作　　者：李庆峰 亚东菊 张灯亮 台立勋 赵石峰 张龙飞 齐亮亮 Li Qingfeng;Ya Dongju;Zhang Dengliang;Tai Lixun;Zhao Shifeng;Zhang Longfei;Qi Liangliang(Hebei Coalfield Geological Bureau Coal Gasification Research Center,Hebei Underground Geological Survey Team,Xingtai Hebei 054000,China)

机构地区：[1]河北省煤田地质局物测地质队河北省煤炭地下气化研究中心,河北邢台054000

出　　处：《工程地球物理学报》2024年第5期876-889,共14页Chinese Journal of Engineering Geophysics

基　　金：河北省科学技术厅资助项目。

摘　　要：石炭-二叠系煤系中沉积了较厚的暗色泥岩、炭质泥岩、煤层及致密砂岩,这些地层在研究区内分布广、面积大、区块多,表现出了良好的页岩气、致密砂岩气潜力。通过物探手段识别研究区内非常规天然气聚集潜力区块,为下一步地质工作提供依据;通过石炭-二叠系地震地质层位标定、沉积相分析、广义声波约束反演及岩性滤波技术等多种手段相结合,对研究区内的储层预测达到了较好效果,基本查明了研究区内二叠系下统山西组致密砂岩层和石炭系上统太原组泥岩层的沉积主控因素及空间展布特征。根据储层厚度反演结果指导井位部署,经过设计钻孔施工数据与储层厚度反演预测结果对比,证实了结合沉积相利用广义声波约束反演非常规天然气储层预测的准确性。可以为华北平原区煤系非常规天然气的勘探开发提供充分的科学依据,降低煤系非常规天然气勘探风险。The study area contains thick dark mudstone,carbonaceous mudstone,coal seam,and tight sandstone deposited in the carboniferous Permian coal measures.These formations are widely distributed with large areas and many blocks,indicating good potential for shale gas and tight sandstone gas.This study aims to identify potential blocks of unconventional gas accumulation through geophysical exploration in the study area,providing a basis for future geological work.By combining carboniferous seismic and geological horizon calibration,sedimentary facies analysis,generalized acoustic constrained inversion,and lithology filtering techniques,the reservoir prediction in the study area finds them effective.The sedimentary controlling factors and spatial distribution characteristics of the tight sandstone layer of the Lower Permian Shanxi Formation and the mudstone layer of the Upper Carboniferous Taiyuan Formation are identified.The results from reservoir thickness inversion guide well location deployment.Comparison between design borehole construction data and prediction results confirm the accuracy of unconventional gas reservoir prediction using generalized acoustic wave constraint combined with sedimentary facies,which provides a scientific basis for exploration and development of unconventional gas in coal measures in the North China Plain while reducing exploration risk.

关 键 词：二维地震资料 沉积相 广义声波约束反演储层预测 华北平原区 

分 类 号：P631.4[天文地球—地质矿产勘探]