Due to thin oil reservoir layers,small sand bodies, scattered distribution and weak natural energy, most of the“thin-scattered-weak”offshore oil fields are difficult to develop economically and effectively.This essay is based on well seismic integrateing with rhythmic segmentation contrast technology to establish the isochronous stratigraphic framework, reservoir sedimentology researches to determine the genetic types of sandbodies,by applying prestack joint inversion of P-wave and S-wave, quantitative knowledge base and geostatistics method to describe the spatial distribution of reservoir and utilizing phase constraint of three digital geological modeling technology to carry on the quantitative characterization. On the basis of reservoir fine description,this essay proposed and practiced the formation water dumping injection and multi-underground and multi-branch horizontal wells technology. Practice shows that compared with the directional well of depletion development, single well daily production can improve the 11 times,recovery efficiency can be increased by 20%,improved development effect dramatically,which provides a new effective way to economically and effectively develop the“thin-scattered-weak”oil reservoirs on offshore and similar difficult producing reserves.
Offshore oil fieldthin-scattered-weak oil reservoirFormation water dumping injectionMulti-underground and multi-branch horizontal wells
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维普
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