【摘要】：隨著地震勘探技術(shù)的發(fā)展,對(duì)精度的要求也在不斷提高,常規(guī)三維地震勘探已經(jīng)逐漸無法滿足地質(zhì)任務(wù)的需求。以四川盆地公山廟地區(qū)為例,該區(qū)域油氣資源豐富,近十幾年來,已經(jīng)部署了多輪地震勘探項(xiàng)目,所取得的成果支撐了該區(qū)80多口油井的部署。但由于儲(chǔ)層較薄,成藏受到裂縫和孔隙的控制,常規(guī)地震技術(shù)無法完全解決該地區(qū)的勘探開發(fā)問題,這在很大程度上限制了川中侏羅系油藏的勘探開發(fā)進(jìn)度。因此迫切需要開展新的地震技術(shù)研究,突破現(xiàn)有常規(guī)地震的技術(shù)瓶頸,進(jìn)一步提升地震資料對(duì)精細(xì)構(gòu)造的刻畫能力。于是,作為能夠有效提高地震資料精度的一項(xiàng)最新技術(shù)手段,高密度三維地震技術(shù)在公山廟地區(qū)得以應(yīng)用。本論文通過對(duì)高密度地震采集技術(shù)的特點(diǎn)及應(yīng)用實(shí)例開展詳細(xì)調(diào)研和分析,主要取得了如下成果：明確了其技術(shù)的核心思想是在采集階段不再區(qū)分干擾波和有效波,對(duì)地震信號(hào)進(jìn)行全波場無損采樣；具備單點(diǎn)激發(fā)、單點(diǎn)接收、小面元、寬方位等特點(diǎn)；對(duì)室內(nèi)處理過程中采用的針對(duì)性技術(shù)的實(shí)施效果進(jìn)行了探討；通過理論研究和實(shí)際資料對(duì)比展現(xiàn)了其在提升地震資料精度、刻畫精細(xì)構(gòu)造體等方面所具備的優(yōu)勢,表明了高密度地震采集技術(shù)在公山廟地區(qū)具有較好的應(yīng)用前景；在綜合考慮其應(yīng)用效果與技術(shù)特點(diǎn)后,針對(duì)高密度地震勘探技術(shù)在未來的推廣應(yīng)用提出了合理化建議。
[Abstract]:With the development of seismic exploration technology, the requirement of precision is also increasing, and conventional 3D seismic exploration has been unable to meet the requirements of geological tasks. Taking the Gongshanmiao area of Sichuan Basin as an example, the region is rich in oil and gas resources. In the past ten years, many rounds of seismic exploration projects have been deployed, and the results obtained support the deployment of more than 80 oil wells in this area. But because the reservoir is thin and the reservoir formation is controlled by fractures and pores, the conventional seismic technique can not completely solve the problem of exploration and development in this area, which to a great extent limits the progress of exploration and development of Jurassic reservoirs in central Sichuan. Therefore, it is urgent to carry out new research on seismic technology, break through the technical bottleneck of existing conventional earthquakes, and further enhance the ability of seismic data to depict fine structures. Therefore, as a new technique which can effectively improve the accuracy of seismic data, high density 3D seismic technology has been applied in Gongshanmiao area. Through the detailed investigation and analysis of the characteristics and application examples of high-density seismic acquisition technology, the main achievements are as follows: it is clear that the core idea of the technology is to no longer distinguish the interference wave from the effective wave in the acquisition stage. The seismic signal is sampled with full wave field nondestructive sampling, which has the characteristics of single point excitation, single point receiving, small plane, wide azimuth, etc. The effect of the pertinence technology used in indoor processing is discussed. Through theoretical research and practical data comparison, it shows its advantages in improving the accuracy of seismic data and depicting fine structures, which indicates that the high-density seismic acquisition technology has a good application prospect in Gongshanmiao area. After considering its application effect and technical characteristics, some reasonable suggestions are put forward for the application of high-density seismic exploration technology in the future.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：P631.4

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本文編號(hào)：2182757