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    • 3. 发明授权
    • Method for identifying subsurface fluid migration and drainage pathways
in and among oil and gas reservoirs using 3-D and 4-D seismic imaging
    • 使用三维和四维地震成像识别油气藏及其中的地下流体迁移和排水路径的方法
    • US5586082A
    • 1996-12-17
    • US398371
    • 1995-03-02
    • Roger N. AndersonAlbert BoulangerEdward P. BagdonasLiqing XuWei He
    • Roger N. AndersonAlbert BoulangerEdward P. BagdonasLiqing XuWei He
    • G01V1/30G01V1/13G01V1/28
    • G01V1/30
    • The invention utilizes 3-D and 4-D seismic surveys as a means of deriving information useful in petroleum exploration and reservoir management. The methods use both single seismic surveys (3-D) and multiple seismic surveys separated in time (4-D) of a region of interest to determine large scale migration pathways within sedimentary basins, and fine scale drainage structure and oil-water-gas regions within individual petroleum producing reservoirs. Such structure is identified using pattern recognition tools which define the regions of interest. The 4-D seismic data sets may be used for data completion for large scale structure where time intervals between surveys do not allow for dynamic evolution. The 4-D seismic data sets also may be used to find variations over time of small scale structure within individual reservoirs which may be used to identify petroleum drainage pathways, oil-water-gas regions and, hence, attractive drilling targets. After spatial orientation, and amplitude and frequency matching of the multiple seismic data sets, High Amplitude Event (HAE) regions consistent with the presence of petroleum are identified using seismic attribute analysis. High Amplitude Regions are grown and interconnected to establish plumbing networks on the large scale and reservoir structure on the small scale. Small scale variations over time between seismic surveys within individual reservoirs are identified and used to identify drainage patterns and bypassed petroleum to be recovered. The location of such drainage patterns and bypassed petroleum may be used to site wells.
    • 本发明利用三维和四维地震勘测作为推导石油勘探和油藏管理有用信息的手段。 该方法采用单独的地震勘测(3-D)和多个地震勘探,在时间上分离(4-D),以确定沉积盆地内的大规模迁移路径,精细规模排水结构和油水气 个别石油生产水库的区域。 使用定义感兴趣区域的模式识别工具识别这种结构。 4-D地震数据集可用于大规模结构的数据完成,其中调查之间的时间间隔不允许动态演化。 4-D地震数据集还可用于发现各个储层内的小尺度结构随时间推移的变化,可用于识别石油排放通道,油水 - 气体区域,从而识别有吸引力的钻井目标。 在空间取向和多个地震数据集的幅度和频率匹配之后,使用地震属性分析来确定与石油存在一致的高幅度事件(HAE)区域。 高幅度地区生长和相互连接,在小规模的大规模和储层结构上建立管道网络。 确定各个储层之间的地震勘测之间随时间的小规模变化,并用于确定要回收的排水模式和旁路石油。 这种排水模式和旁路石油的位置可用于现场井。