准噶尔沙漠区中部2区块地震勘探采集方法研究

发布时间：2018-03-07 22:27

本文选题：准噶尔　切入点：地震勘探　出处：《新疆大学》2015年硕士论文　论文类型：学位论文

【摘要】：研究区位于新疆昌吉回族自治州古尔班通古特沙漠中,地表全部为沙丘覆盖,沙丘起伏剧烈,高差达70多米,由于地表巨厚沙丘对地震波能量的吸收衰减严重,资料信噪比和分辨率偏低;同时低降速带厚度变化大,高速层埋藏较深,使得静校正问题十分突出,也不利于激发因素的优选[1]等。此次研究以成1井东为依托,主要是针对隐蔽油气藏地质目标、巨厚的地表沙漠覆盖,开展表层结构调查、静校正、激发、接收和观测系统设计的研究工作。通过对新疆准噶尔沙漠区中部2区块地震观测系统属性分析评估与参数优化、表层结构调查技术、接收技术和激发技术的研究,形成一套适合该研究区的地震勘探采集方法系列,提高了野外地震勘探采集资料质量,同时该技术能对其它沙漠区的科研生产起到重要借鉴和指导作用。
[Abstract]:The study area is located in the Guerbantungote Desert of Changji Hui Autonomous Prefecture, Xinjiang. The surface is covered by sand dunes, and the sand dunes fluctuate violently, with a height difference of more than 70 meters. Due to the absorption and attenuation of seismic wave energy by the massive sand dunes on the ground, The signal-to-noise ratio (SNR) and resolution of the data are on the low side, at the same time, the thickness of the low velocity drop zone changes greatly and the high speed layer is buried deep, which makes the static correction problem very prominent and is not conducive to the optimal selection of the excitation factors [1]. This study is based on the east of Cheng-1 well. Mainly aimed at geological targets of subtle oil and gas reservoirs, extremely thick surface desert cover, surface structure investigation, static correction, excitation, Research on the design of receiving and observing system. Through the analysis, evaluation and parameter optimization of seismic observation system in the 2 blocks in the middle of Junggar Desert, Xinjiang, the surface structure survey technology, receiving technology and excitation technology are studied. A series of seismic exploration and acquisition methods suitable for the study area is formed, which improves the data quality of field seismic exploration and acquisition. At the same time, the technology can play an important role in reference and guidance for scientific research and production in other desert areas.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.4

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