有限覆盖密度下采集面元的选择原则

摘要/Abstract

摘要： 高密度和宽方位地震采集技术的广泛应用大幅度提高了地震勘探的精度，高覆盖密度、小面元、点采集已经成为目前获得更高精度资料的采集技术发展方向。但是对于实际生产来说，由于采集成本的制约，不可能无限制增加采集强度，如何在有限的成本投入条件下获得最优的采集效果是目前业界普遍研究的课题。通过对中国西部某区高密度三维实际地震资料进行基于叠前偏移的采集面元分析后认为, 小面元提高资料精度是以高覆盖密度为条件的，在覆盖密度一定条件下，过分强调小尺寸面元并不一定能够获得更高分辨率的资料，适当增加面元尺寸更有利于改善波场均匀性和资料成像的振幅保真度，获得更高精度的资料成果。

关键词: 观测系统；面元尺寸；覆盖密度；信噪比；地震采集；采集脚印

Abstract: Wide application of high density and wide azimuth seismic acquisition technology has significantly improved the seismic exploration precision. High coverage density, small bin and point collection have become the development directions of seismic acquisition technology to obtain more accurate data. However, as for actual production, it is impossible to unlimitedly increase acquisition strength under the limitations of acquisition cost. How to obtain the optimized acquisition effect under the condition of limited cost is a widely-studied problem in the industry at the present time. With the analysis of acquisition bin of 3D high-density seismic data based on PSTB in a certain area of West China, it is considered that the accuracy of seismic data improved by small bin is based on the condition of high coverage density. Overemphasis on small bin size cannot necessarily obtain the data of a higher resolution under the condition of high coverage density. Appropriate increase of bin size can help improve the uniformity wave field and amplitude fidelity of data imaging, acquiring the data of higher precision.

Key words: seismic acquisition geometry, bin size, coverage density, signal-to-noise ratio, seismic acquisition, acquisition footprint

王正军　苏卫民. 有限覆盖密度下采集面元的选择原则[J]. 中国石油勘探, 2015, 20(6): 44-51.

Wang Zhengjun, Su Weimin. Principle for Selection of Acquisition Bin under Limited Coverage Density[J]. China Petroleum Exploration, 2015, 20(6): 44-51.

参考文献

[1] 曲寿利. 高密度三维地震技术——老油区二次勘探的关键技术之一 [J]. 石油物探, 2006,45(6):557-562. Qu Shouli. High density 3D seismic technology - one of the key technology of secondary exploration in old oil region[J]. Geophysical Prospecting for Petroleum, 2006,45(6):557-562.
[2] 何海清, 李建忠. 中国石油“十一五”以来油气勘探成果、地质新认识与技术进展[J]. 中国石油勘探，2014,19(6):1-13. He Haiqing, Li Jianzhong. PetroChina’s oil and gas exploration results, new geological theories and technological achievements since 11th Five-Year Plan Period[J]. China Petroleum Exploration, 2014,19(6):1-13.
[3] 王学军, 蔡加铭, 魏小东. 油气勘探领域地球物理技术现状及其发展趋势[J]. 中国石油勘探，2014,19(4):30-42. Wang Xuejun, Cai Jiaming, Wei Xiaodong. The current status and development trend of geophysical technology for oil and gas exploration[J]. China Petroleum Exploration, 2014,19(4):30-42.
[4] 熊翥. 高精度三维地震(I): 数据采集[J]. 勘探地球物理进展, 2009, 32(1):1-11. Xiong Zu. High precision 3D seismic(I): data Acquisition[J]. Progress in Exploration Geophysics, 2009,32(1):1-11.
[5] 易维启, 董世泰, 曾忠, 等. 地震勘探技术性与经济性策略考量[J]. 中国石油勘探，2013,18(4):19-25. Yi Weiqi, Dong Shitai, Zeng Zhong, et al . Consideration of technical and economic strategy for seismic exploration[J]. China Petroleum Exploration, 2013,18(4):19-25.
[6] Barry J.Newman. 空间假频和3D 面元尺寸：寻求更清晰、更低廉数据[J]. 程建春，译. 国外油气勘探，2000,12(5):633-636. Barry J.Newman. Spatial aliasing and 3D bin size: Searching for more clear and cheaper data[J]. Translated by Cheng Jianchun. Oil & Gas Prospecting Abroad, 2000,12(5):633-636.
[7] 王志亮，周滨，龚旭东，等. 高密度高分辨地震勘探技术在渤海PL 地区的应用[J]. 中国石油勘探，2013,18(2):37-44. Wang Zhiliang, Zhou Bin, Gong Xudong, et al . Application of high-density and high-resolution seismic exploration technology for PL zone in Bohai Sea[J]. China Petroleum Exploration, 2013,18(2):37-44.
[8] 王喜双, 赵邦六, 董世泰, 等. 油气工业地震勘探大数据面临的挑战及对策[J]. 中国石油勘探，2014,19(4):43-47. Wang Xishuang, Zhao Bangliu, Dong Shitai, et al . Challenges and strategies for large seismic exploration data of oil and gas industry[J]. China Petroleum Exploration, 2014,19(4):43-47.
[9] 郭恺，等. 地震采集面元尺度与成像横向分辨能力分析[J]. 石油与天然气地质, 2012,33(1):141-147. Guo Kai，et al . Analysis on bin size of seismic survey and lateral resolution of imaging[J]．Oil & Gas Geology, 2012,33(1):141-147.
[10] 张永刚, 等. 单点高密度地震数据处理分析与初步评价[J]. 石油地球物理勘探, 2010,45(2):201-207. Zhang Yonggang, et al . Single point high density seismic data processing analysis and initial evaluation[J]. Oil Geophysical Prospecting，2010,45(2):201-207.
[11] Andreas Coordsen．Acquisition footprint can confuse[C]．AAPG Explorer, Geophysical Corner, March 2004:26.
[12] 王海, 等. 观测系统对高密度地震采集资料的影响[J]. 石油地球物理勘探, 2009,44(2):131-135. Wang Hai, et al . Influence of geometry on high-density seismic data acquisition[J]. Oil Geophysical Prospecting，2009, 44(2):131-135.
[13] 王喜双，赵邦六，董世泰，等. 面向叠前成像与储层预测的地震采集关键参数综述[J]. 中国石油勘探，2014,19(2):33-38. Wang Xishuang, Zhao Bangliu, Dong Shitai, et al . Key parameters of seismic acquisition for surface pre-stack imaging and reservoir prediction[J]. China Petroleum Exploration, 2014,19(2):33-38.
[14] 钱荣钧. 关于地震采集空间采样密度和均匀性分析[J]. 石油地球物理勘探, 2007,42(2):235-243. Qian Rongjun. Analysis on seismic acquisition spatial sampling density and uniformity[J]. Oil Geophysical Prospecting，2007, 42(2):235-243.
[15] 陈敬国，王成河，白旭明, 等. 三维观测系统属性定量评价方法探讨 [J]. 中国石油勘探，2015,20(2):68-74. C h e n J i n g g u o , W a n g C h e n g h e ， B a i X u m i n g，e t a l . Quantitative evaluation method of 3D geometry attributes[J]. China Petroleum Exploration, 2015,20(2):68-74.
[16] 侯成福, 等. 三维观测系统与采集脚印[J] . 石油地球物理勘探, 2007,42(6):611-615. H o u C h e n g f u , e t a l . 3 - D g e o m e t r y a n d a c q u i s i t i o n footprints[J]. Oil Geophysical Prospecting，2007,42(6):611-615.
[17] 狄帮让，熊金良，岳英，等．面元大小对地震成像分辨率的影响分析[J]. 石油地球物理勘探，2006,41(4):363-368． Di Bangrang，Xiong Jinliang，Yue Ying，et al ．Analysis on influence of bin size on resolution of seismic imaging[J]．Oil Geophysical Prospecting，2006,41(4):363-368．
[18] Fred W Schroeder, 等. 覆盖次数和面元尺寸如何影响数据的解释能力[J]. 康昆等, 译. 国外油气勘探，1999,11(5):593-606. Fred W Schroeder, et al . Fold and bin size can affect the interpretation of seismic data[J]. Translated by Kang Kun et al . Oil & Gas Prospecting Abroad, 1999,11(5):593-606.
[19] 苏心华．复杂地区细分面元采集方法不利因素分析[J]．小型油气藏， 2005,10(3):13-17． Su Xinhua．Unfavorable factors of the subdivision bin acquisition method in complex areas[J]．Small Hydrocarbon Reservoirs，2005,10(3):13-17．
[20] 张军华，郑旭刚，王伟，等．面元细分处理资料的分辨率定量评价[J]. 油气地球物理，2009,7(3):14-17． Zhang Junhua，Zheng Xugang，Wang Wei，et al ．The quantitative evaluation of resolution for bin-divisible seismic data[J]．Petroleum Geophysics，2009,7(3):14-17．