Study On High Precision Seismic Acquisition Technology Of Binxian Slope Belt In Jiyang Depression

At present,the whole of the domestic oil exploration and evaluation technology and district evaluation research have made progress,also the diagenetic facies quantitative evaluation technology is constantly improving,so in view of the complex type of micro structure imaging,complex reservoir prediction and reservoir fluid characteristics prediction technology,we need to strengthen research and development.With the development of exploration,the thickness of the target reservoir is thinner,the continuity of the plane distribution is worse and the oil water distribution is complex,which is more difficult to recognize.These factors lead to the difficulty in understanding,predicting and exploring,and the variation of exploration benefit.These factors lead to the difficulty in understanding,difficult to predict,difficult to predict,and the exploration benefit is getting worse.Therefore,it is the main demand to improve the precision of the complex structure imaging.In recent years,for complex underground structure oilfield in the two seismic acquisition,Shengli Oilfield mainly adopted high precision seismology and around increasing frequency and extending frequency carried out a lot of research,which greatly improved the vertical and lateral resolution,and the fine description of the underground reservoir came true.In order to understand the application effect of the development seismic technology in complex structure exploration,we have focused on the excitation of the broadband signals,the protection of the effective high-frequency signals,the reduction of the surface attenuation of the effective high-frequency signals,the suppression of noise and the improvement of the signal-to-noise ratio,and have carried out some research work and have obtained some initial achievements.In shallow of Jiyang depression,the acquisition frequency is up to 70 Hz,the width of the frequency band is up to 130 Hz,also the identification capacity of the 10 m small faults and micro-amplitude structure have improved.We have carried out the necessary attempts for the wide range of high-density seismic acquisition,which achieved good technical results that the aspect ratio was up to 0.9 and the face was low to 5m*5m.We take the complex geological structure in Binxian slope belt in Jiyang depression as an example.We used the seismic data in Bin 1,Bin 2 and Bin 3 which have developed for two tears to carry out technology analysis in various aspects,and carried out the research of "three high" based on high signal-to-noise ratio,high resolution and high fidelity.And then we can turn the geophysical problems into the acquisition technology problems,so we have done sufficient demonstrations of the observation system design,broadband excitation and reception and other factors,and used the geological model,wave field lighting and other advanced technology,and the control methods of the field construction technology to improve the imaging effect of the complex structure in Binxian slope belt,which can lead to the breakthrough in the exploration in that area.