http://www.seg.org/education/misc/continuing-courses/full-curriculum/marinebroadband Marine Broadband Technologies: Theory and Practice by David H. Carlson Duration: One day Intended Audience: Intermediate and Advanced levels Prerequisites (Knowledge/Experience/Education Required): It is recommended that the student have nominal knowledge of marine seismic data acquisition and preprocessing. Some explanations of methods will require discussions of data transformed into the frequency domain. Particular mathematical equations will be used when necessary; the discussion of these equations will always pause for a brief tutorial of the terms. Summary: This course describes the acquisition and processing of marine broadband data using newly developed methods in the industry. Three main methods will be discussed. The course is not a comparison of the three methods but an explanation of the methods with an appreciation for each for the improvements in data quality and acquisition efficiency. Although the theory has been known for decades, advances in acquisition equipment and techniques have made the methods operational. This course provides understanding of the processing for improved interpretation of the data. Course Outline: A tutorial on the theory of wave motion Wave motion theory supporting broadband methods Streamer methods: 2D and 3D Over/under acquisition Dual sensor acquisition Multilevel sensor acquisition Seismic Resolution and Noise Sources Over/under gun arrays Processing comparisons with conventional data Multicomponent acquisition Ocean bottom multicomponent acquisition Cable multicomponent acquisition Future challenges Learner Outcomes: From the discussions and exercises the participant will be able to Identify the advantages these methods have over conventionally processed data. Know specific and detailed limitations that the source and receiver depth imposes on the data. Design (or write) prototype code that implements four ways to remove the receiver ghost and two ways to remove the source ghost. Instructor Biography: David H. Carlson
本门课程的最后1次课,我们会组织大家进行课堂讨论。同学们分组就以下材料中的其中一部分进行文献调研,写出调研报告,准备5-8分钟的PPT汇报材料。希望同学们认真准备,组内同学认真讨论,增强团队精神,做出好的成果! 参考资料如下:(同学们还可在网上google新的资料) 1 Marine seismic source http://www.freepatentsonline.com/6639873.html 2 marine seismic streamer http://www.mitchamindustries.com/Products/detail.php?pId=116 seg_marine_hydrophones_streamer_cable.doc (SEG 1987)(点击只读就可以了,不要管密码) 3 marine seismic navigation http://www.slb.com/services/characterization/wireline_open_hole/borehole_seismic/seismic_navigation_positioning.aspx 4 Q-Marine A fully calibrated, point-receiver marine seismic acquisition system for locating, defining, and actively managing offshore reservoirs throughout field life. 5 Wide-Azimuth Innovative marine acquisition techniques such as multi-azimuth (MAZ), wide-azimuth (WAZ), and rich-azimuth (RAZ) are aimed at addressing the illumination problems inherent in traditional narrow-azimuth marine seismic. 6 Coil Shooting Coil Shooting single-vessel full-azimuth (FAZ) acquisition is a technique of acquiring marine seismic data while following a circular path—taking geophysics further by enhancing on current multi- and wide-azimuth techniques. 7 Dual Coil Shooting Dual Coil Shooting multivessel full-azimuth acquisition further extends the capabilities of the Coil Shooting technique by allowing acquisition of full-azimuth seismic data with very long offsets through the use of multiple vessels traveling in continuous circles. 8 DISCover DISCover deep interpolated streamer coverage, is designed to efficiently deliver 3D seismic data with an enhanced bandwidth, providing increases in both low frequencies for deeper penetration and high frequencies for improved resolution. 9 CLA — Continuous Line Acquisition CLA – Continuous Line Acquisition significantly increases the efficiency of marine seismic data acquisition operations by shooting and collecting data during vessel turns. 10 4D Seismic Technology WesternGeco differentiated technologies offer a complete 4D solution from feasibility studies to inversion and history matching. 11 Q-Seabed Q-Seabed technology delivers the highest-quality multicomponent data in the most efficient manner possible, with many years of experience to ensure the best results, every time. 12 Multicomponent Seismic Technology With more than eighty 4C surveys completed worldwide, proprietary 4C technology from WesternGeco provides high-quality and cost-effective multicomponent data that can reduce the cost of reservoir development. 13 Related services and products Environmental Excellence in Marine Operations