H Oilfield in the Pearl River Mouth Basin mainly develops delta front deposits. Its reservoir thickness is thin

the lateral change is fast

and the understanding of lithologic boundary and sand body connectivity is not clear

which seriously restricts the efficient development of oil field. Seismic waveform indication inversion can fully use the lateral changes of seismic waveforms to carry out high-frequency component estimation

and establish the interpolation model which is more consistent with the sedimentary characteristics. This method has good inter-well prediction ability

and is particularly suitable for high-precision prediction of fast lateral changes

strong non-average

and thin interbedded sand and mudstone reservoirs. While for another method

seismic sedimentology

is to use the seismic attribute slice to describe the lateral distribution range and sedimentary characteristics of the reservoir under the guidance of isochronous stratigraphic framework. It has a good detection effect on the plane sedimentary characteristics of thin reservoir which cannot be resolved vertically. Combined with the above two methods

a set of technical processes for fine description and sedimentary characterization of marine thin sandstone reservoirs is formed and has achieved good application results in H Oilfield

meanwhile provides effective technical support for remaining oil prediction and potential tapping adjustment in the study area.