基于地质目标的岩性油气藏地震资料处理解释一体化方案  

Geology-oriented integrated seismic data processing and interpretation for lithologic reservoirs

作　　者：张明[1] 孙夕平[1] 崔兴福[1] 张昕[1] 李凌高[1] 杜文辉[1] ZHANG Ming;SUN Xiping;CUI Xingfu;ZHANG Xin;LI Linggao;DU Wenhui(Research Institute of Petroleum Exploration&Development,CNPC,Beijing 100083,China)

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《石油地球物理勘探》2021年第2期323-331,I0011,共10页Oil Geophysical Prospecting

基　　金：国家科技重大专项“岩性地层油气藏成藏规律、关键技术及目标评价”(2017ZX05001);中国石油天然气股份有限公司项目“地震储层预测质控软件系统集成研发”(kt2020-10-05)联合资助。

摘　　要：岩性油气藏存在储层薄、横向变化快等勘探难点,在常规处理的地震资料上开展岩性油气藏储层预测时,地震资料分辨率、保幅性等难以满足地质需求。为此,探索提出了基于地质目标的地震资料处理解释一体化方案。主要包括:(1)研究初期的规划阶段,以地质目标为导向,分析储层预测对地震资料品质的要求,明确相应的地震资料处理与解释关键技术,形成处理与解释整体技术流程;(2)处理解释阶段,通过合成记录标定、属性分析等技术手段,动态分析各处理环节对刻画地质目标的影响,实时反馈到处理流程中,及时对处理方法和参数选择做出相应调整,最终获得满足岩性油气藏储层预测需求的高品质地震资料;(3)储层描述阶段,结合区域地质资料进一步开展储层预测工作,对岩性油气藏储层做出更精细的判断。整个一体化流程中,处理、解释人员始终协同工作,从过去的"单向串联"工作模式变为"双螺旋并联"模式。地震解释工作时间前移,与处理工作同步开展,二者相互指导,螺旋上升,实现了处理、解释技术的有机融合,在实际生产应用中取得了较好效果。After routine seismic data processing,it is difficult to obtain amplitude-preserved seismic data with high resolution for characterizing lithologic reservoirs due to their small thickness and large lateral changes.A better alternative is scheme geology-oriented integration of seismic data processing and interpretation in the way of"double-helical parallel operation"instead of"serial operation".The flow includes(1)At the stage of project planning,efforts focus on establishing key techniques and workflow for seismic data processing and interpretation in accordance with geologic setting and tasks;(2)At the stage of seismic data processing and interpretation,using well-tie calibration and attribute analysis,the effects of data processing on geologic characterization are analyzed and fed back to data processing to improve techniques and parameters;(3)At the stage of reservoir characterization,seismic prediction combined with regional geologic study is carried out for a detailed understanding of lithologic reservoirs.The method emphasizes synchronous processing and interpretation instead of processing followed by interpretation.The integration of seismic data processing and interpretation yields good results in practice.

关 键 词：岩性油气藏 地震预测 处理解释一体化 保幅 提高分辨率 

分 类 号：P631[天文地球—地质矿产勘探]