本文選題：微地震 + 射線追蹤��； 參考：《長安大學》2015年碩士論文

【摘要】：微地震監(jiān)測技術,作為研究地層內部微破裂過程的一種方法技術,在油氣藏勘探開發(fā)領域有著廣泛的應用。微地震正演數(shù)據(jù)模擬作為微地震監(jiān)測技術中的一個重要組成部分,對微地震監(jiān)測技術的發(fā)展起著不可或缺的作用。微地震正演模擬主要包括波動方程法和射線追蹤法,它們各自具有不同的優(yōu)勢。本次論文編寫著重于研究基于射線追蹤方法的波場模擬。射線追蹤方法在地震波的震源精確定位以及層析成像等處理環(huán)節(jié)中都有著廣泛的應用。本文從射線射線追蹤的原理出發(fā),對三維逐段迭代法射線追蹤和基于雙線性插值的射線追蹤算法都進行了研究,并且將其在三維水平和傾斜層狀介質中進行了實現(xiàn)。本文對逐段迭代法和基于雙線性插值算法的射線追蹤的精度、速度以及適用范圍進行了分析探討。論文對基于雙線性插值算法的射線追蹤的速度提升方面做了一定的研究:一是從算法上進行了改進,減少了最小旅行時計算中搜索的次數(shù),進而提升了速度;二是在多震源的情況下,依據(jù)雙線性插值算法的特點,利用震源和檢波器的互換原理,減少計算網格旅行時的次數(shù),對速度進行了提升。論文對隨時間、空間變化的微地震事件的震源位置以及發(fā)震時間的自動生成做了研究,通過射線追蹤將生成的各個事件的旅行時以及傾角和方位角信息追蹤出來,最終合成了三維三分量的微地震記錄。
[Abstract]:Microseismic monitoring technology, as a method to study the process of microfracture in strata, is widely used in the field of oil and gas reservoir exploration and development. As an important part of microseismic monitoring technology, microseismic forward modeling plays an indispensable role in the development of microseismic monitoring technology. Microseismic forward modeling mainly includes wave equation method and ray tracing method, which have different advantages. This paper focuses on the study of wave field simulation based on ray tracing method. The ray tracing method has been widely used in seismic source location and tomography processing. In this paper, based on the principle of ray tracing, the three dimensional piecewise iterative ray tracing and the ray tracing algorithm based on bilinear interpolation are studied and implemented in horizontal and inclined layered media. In this paper, the accuracy, velocity and application range of ray tracing based on piecewise iterative method and bilinear interpolation algorithm are analyzed and discussed. In this paper, the speed raising of ray tracing based on bilinear interpolation algorithm is studied. Firstly, the algorithm is improved to reduce the number of searches in the minimum travel time calculation, and then improve the speed; Secondly, in the case of multi-source, according to the characteristics of bilinear interpolation algorithm, using the exchange principle of source and detector, the times of computing grid travel time are reduced, and the speed is improved. In this paper, the focal location and generating time of microseismic events with time and space change are studied. The travel time, inclination angle and azimuth information of each event are traced by ray tracing. Finally, three-dimensional three-component microseismic records were synthesized.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P631.4

【參考文獻】

相關期刊論文 前4條

1 吳太平,李生莉,丘勇;國內外低滲油氣藏壓裂技術現(xiàn)狀及發(fā)展趨勢[J];河南石油;2003年06期

2 董世泰,高紅霞;微地震監(jiān)測技術及其在油田開發(fā)中的應用[J];石油儀器;2004年05期

3 王曉泉,陳作,姚飛;水力壓裂技術現(xiàn)狀及發(fā)展展望[J];鉆采工藝;1998年02期

4 何文淵,魏彩云;中國油氣資源發(fā)展現(xiàn)狀面臨的問題和對策[J];中國能源;2005年01期

相關碩士學位論文 前2條

1 劉軍;基于射線追蹤的微地震模型多波場正演模擬[D];中國石油大學;2009年

2 張霽潮;基于射線追蹤的微地震正演模擬[D];長江大學;2013年

，

本文編號：2040950