Abstract：Aimed at existing problems of current seismicacquisition in Sichuan Basin,the paper sought aftermore efficient,reliable and economic methods in order to obtain data with high quality and rich information that can be used for structure study andreservoir prediction.The practice showed that us-ing downhole receiver to limit the spatial high-frequency random noise instead of linear or areal receiver-array can significantly improve S/N ratio,resolution and fidelity of raw data;adopting single3-D geometry with fixing downhole areal receivingand moving shot in an area of gentle and uneompli-Gated structure can improve the precision of structure and to predict fracture-developed belt,meanwhile,using spectral difference curves for lateralprediction of oil-bearing fracture,improving successful opportunity of exploration and efficiency;after using 2-D multiple coverage for reconnaissauce and detecting oil and gas,using previous single 3-D exploration with downhole receiving ratherthan 2-D multiple coverage for detail survey cangreatly reduce acquisition cost;using 3-D acquisition with downhole receiving in full fold for exploration of key parts of complicatied and steeply dipping structure can improve acquisition quality andfor oil-gas prediction after processing of zero-offsetsection;using high-resolution VSP data and uphole survey data and producing spectral differencecurves can be used to predict the highest frequencyand resolution reflected from the target,so that thedecision whether the high-resolution acquisitionwill be done can be determined,achieving the goalof reasonably using equipment.Adopting above-mentioned tools can improve the success of exploration,reduce cost and speed up process of exploration.
