【摘要】：高密度地震勘探指的是以小于某種既定或以往的采集道距的方法進(jìn)行布設(shè)采集,或者僅以點為最小單元的形式。此項技術(shù)最早是由國外學(xué)者提出,沿用至今已發(fā)展比較成熟,得到眾多應(yīng)用該技術(shù)進(jìn)行油氣勘探者的好評。三維地震勘探技術(shù)自引入實際油氣勘探工作中以來,被廣大油氣勘探學(xué)者及研究人員進(jìn)一步創(chuàng)新發(fā)展,目前基本掌握了三維地震勘探技術(shù)的核心思想,技術(shù)應(yīng)用嫻熟,可以針對大部分地區(qū)油氣田勘探。近年來,三維地震勘探應(yīng)用日漸廣泛,但隨著勘探條件的復(fù)雜化和高精度采集的要求,常規(guī)三維地震采集技術(shù)采集的數(shù)據(jù)已不適應(yīng)高精度地震解釋的需要。高密度三維地震采集技術(shù)以其對小段塊、薄儲層、小砂體識別能力的提高,能提供高信噪比、高分辨率和高保真度的數(shù)據(jù),為高精度資料處理和解釋提供了保證,滿足了油田生產(chǎn)的要求。通過運用PSTM和DMO疊前偏移噪聲分析技術(shù),為更佳的成像效果提供了新的方法。在激發(fā)、接收及處理方面均對三維地震的分辨率和保真度有所改善,形成了一套針對情字井地區(qū)資料接收處理技術(shù)。本論文取得了如下主要成果:提供了新的觀測系統(tǒng)優(yōu)化方法;通過縮小激發(fā)點間隔,加密微測井等方法,提高了表層資料的分辨率,給井深設(shè)計提供精確參數(shù);確定了情字井地區(qū)以提高分辨率為目的的激發(fā)井深設(shè)計技術(shù),形成了一套情字井地區(qū)高密度采集技術(shù)系列;實現(xiàn)了與儀器車連接,對地震資料進(jìn)行實時評價,地震采集評價信息反饋及時率達(dá)到了100%。
[Abstract]:High-density seismic exploration refers to a method that is less than a given or previous acquisition distance, or in the form of only a point as the minimum element. This technology was first put forward by foreign scholars. It has been developed and mature, and has been praised by many oil and gas prospectors. Since the 3D seismic exploration technology has been introduced into the actual oil and gas exploration work, it has been further innovated and developed by the vast number of oil and gas exploration scholars and researchers. At present, it has basically mastered the core idea of 3D seismic exploration technology and has been skillful in its application. Oil and gas fields can be explored in most areas. In recent years, 3D seismic exploration has been widely used, but with the complication of exploration conditions and the requirement of high-precision acquisition, the data collected by conventional 3D seismic acquisition technology can not meet the needs of high-precision seismic interpretation. The high density 3D seismic acquisition technology can provide high SNR, high resolution and high fidelity data with the improvement of recognition ability of small blocks, thin reservoirs and small sand bodies, which provides a guarantee for high precision data processing and interpretation. Meet the requirements of oilfield production. By using PSTM and DMO prestack migration noise analysis techniques, a new method is provided for better imaging effect. In the aspects of excitation, reception and processing, the resolution and fidelity of 3D seismic are improved, and a set of data receiving and processing technology is formed. The main achievements of this paper are as follows: a new optimization method of observation system is provided, and the resolution of surface data is improved by reducing the interval between excitation points and infilling micrologging, and the precise parameters are provided for the design of well depth. In order to improve the resolution, the design technology of exciting well depth is determined, a set of high density acquisition technology series is formed, and the real-time evaluation of seismic data is realized by connecting with instrument vehicle. The timely feedback rate of seismic acquisition and evaluation information has reached 100%.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P631.4

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