Integrated Reservoir Characterization and Approach for Improving Development Drilling of Narrow Fluvial Channel Reservoir Within a Thin Oil Rim

摘要

By integrating geological, seismic data, geochemical mud logrndata, wireline log correlations, DSTs, reservoir/productionrndata and 3D modeling; a detailed reservoir characterizationrnwas conducted in a narrow fluvial channel reservoir within anrnoil rim. Application of acoustic impedance (AI), generatedrnfrom 3D seismic inversion, proved to be an effective measurernfor identifying subsurface sandbody/coal from shale. The sumrnof negative AI values showing single sandstone in local wellrnregion as well as whole sandstone within an oil column wasrnmapped. This provided a sound base for identifying reservoirrntargets and designing the proposed well to optimally penetraternmultiple targets.rnDuring drilling, geologist and geophysicist cooperatedrntogether on carrying out a “real time” reservoir study, wherernthe geological model was revised in time, allowing thernapplication of sidetracking a well to improving the successfulrndrilling.rnResults of integrated reservoir characterization, inrnparticular the application of AI, have greatly improved thernsuccess of development drilling for narrow fluvial channelrnreservoirs within oil rim.