西北地质2025，Vol.58Issue(3)：120-130,11.DOI:10.12401/j.nwg.2024094
地震拓频处理技术在金龙油田侏罗系薄砂岩储层预测中的应用
Application of Seismic Frequency Expanding Processing Technology in the Jurassic Thin Reservoir Prediction of Jinlong Oilfield
摘要
Abstract
The thickness of the Jurassic reservoir sand body in Jinlong Oilfield is thin,with rapid lateral changes and unclear spatial distribution patterns.It is difficult to identify conventional seismic data,and improv-ing the resolution of seismic data for predicting thin sand body reservoirs has become the key to the exploration and development of Jurassic lithological oil and gas reservoirs.By using HFE high-resolution frequency exten-sion processing method and combining with AIW acoustic impedance inversion technology,effective prediction of thin sand reservoir has been achieved.The results show that by utilizing HFE high-frequency expansion pro-cessing technology,the frequency band of target layer seismic data has been widened by 45 Hz(from 10～55 Hz to 10～100 Hz),improving the ability of seismic data to identify thin sand reservoirs and achieving effective characterization of thin sandstone layers larger than 8 m;At the same time,based on seismic frequency data,AIW wave impedance reservoir inversion was carried out to accurately predict and characterize the spatial distri-bution of the J1s21 sand body in the Jurassic Sangonghe Formation in the study area.Four favorable areas for oil and gas reservoirs were identified,with one favorable area having achieved high industrial oil and gas produc-tion through drilling.The actual drilling results are highly consistent with the reservoir prediction results,with a 100%accuracy rate for reservoir prediction drilling and an absolute error value of less than 4.29%for sand body thickness.This method is effective for predicting thin sand reservoirs in the Jurassic system,with obvious re-sults and high drilling coincidence rate.It can be used as an effective method for predicting thin sand reservoirs and provide reliable technical support for predicting sand reservoirs in lithological oil and gas reservoirs.关键词
储层预测/薄砂岩储层/拓频处理/波阻抗反演/侏罗系/金龙油田Key words
reservoir prediction/thin sandstone reservoir/frequency expanding processing/acoustic impedance inversion/Jurassic System/Jinlong Oilfield分类
天文与地球科学引用本文复制引用
赵飞,赵俊,陈晓轩,许海红,韩小锋,路克崇,张慧元,魏东涛,崔海峰..地震拓频处理技术在金龙油田侏罗系薄砂岩储层预测中的应用[J].西北地质,2025,58(3):120-130,11.基金项目
陕西省自然科学基础研究计划一般项目-面上项目"基于地球物理多元属性的银额盆地西部火成岩识别方法研究"(2023-JC-YB-273),中国地质调查局地质调查项目"河西走廊盆地群油气地质调查评价"(DD20242183)、"鄂尔多斯盆地及周缘油气地质调查与评价"(DD20240049)联合资助. （2023-JC-YB-273）
