The Application Research Of Whole Seismic Acquisition Technology In The Loess Tableland Of Gaoqiao Area

All-digital high-precision seismic gathering technology plays an important role in improving reservoir prediction accuracy in Ordos basin, increased drilling success rate of the exploration and development in the northern part of the basin named Sulige gas field and promote the use in the eastern part of the basin. This text mainly study that in seismic geological conditions of Gaoqiao,depend on the more mature supporting technologies such as:all-digital high-precision gathering、processing、interpretation、and combining the the actual conditions of the study area, designing test program scientifically, study the application effect of using all-digital high-precision gathering technology in Gaoqiao Loess Plateau, carried out micro-logging surface survey in mountain loess, and find that combined rock surface point by point with water survey, the shallow micro-logging can provide reliable reference for excitation depth design, and based on Paleozoic gas effective reservoir prediction designed a gathering and observation system of loess hill All-digital high-precision, it suggests that non-vertical gathering not only can improve SNR of the oil layer of mesozoic. but also can improve SNR of the oil layer of paleozoic; contrasting different coverage times、offset stacked section and gathering information,researched that using all-digital detector to improve seismic resolution in loess hill area. Analysising and summarizing the applicant range of digital detector used in loess hill area, defined several approach such as statics regulate,denoising, road mixed. Otherwise, compare the different receive effective and accuracy of exploration between the conventional detector and digital detector. At last, we consider that Gaoqiao all-digital gathering information can effectively expand frequency range, improve resolution and SNR; it can satisfied the definition of small structure; all-digital vertical line observation and non-vertical line observation in seismic profiles are all exceed in conventional profile, and have the characteristic of the third shape AVO, it can satisfy prestack reservoir prediction, and can distinguish the oil layer effectively, achieve the aim of oil field prediction of Mesozoic. These achieved results have important technology exploration and technology reserve meaning in spreading all-digital high-precision seismic gathering technology used from the thinner loess to the thicker loess.