本文選題：微測(cè)井　切入點(diǎn)：小折射　出處：《吉林大學(xué)學(xué)報(bào)(地球科學(xué)版)》2017年02期 　論文類型：期刊論文

【摘要】：地震勘探中,近地表的不均勻性給激發(fā)、接收和靜校正等工作帶來較大困難。遼西葫蘆島東部地表地質(zhì)條件復(fù)雜,淺表層速度及厚度差異大,表層調(diào)查工作直接影響到地下介質(zhì)成像效果。為使該地區(qū)首次進(jìn)行的地震勘探能夠獲取準(zhǔn)確的靜校正量數(shù)據(jù)、給井深設(shè)計(jì)提供依據(jù)、研究適合該區(qū)域的表層調(diào)查方法,同時(shí)為滿足國家深部探測(cè)項(xiàng)目對(duì)實(shí)驗(yàn)方法比對(duì)研究的需求,結(jié)合小折射、地面微測(cè)井和井中微測(cè)井三種表層調(diào)查方法的工作原理,在該工區(qū)分別應(yīng)用三種方法做同點(diǎn)比對(duì)實(shí)驗(yàn),分析了不同調(diào)查方法的適用性及精確度。結(jié)果表明,三種方法得到的結(jié)果與巖性錄井結(jié)果一致,均能有效探測(cè)高速層埋深,指導(dǎo)井深設(shè)計(jì),其中:小折射成本較低,適合地面較平坦區(qū)段,雖然不夠精細(xì),但能夠準(zhǔn)確找到高速層,可用于井深設(shè)計(jì)或作為微測(cè)井方法的補(bǔ)充;地面微測(cè)井適合山高無水或者造山破碎帶造成鉆井嚴(yán)重漏水的地區(qū),需要井中檢波器與大地良好耦合;井中微測(cè)井最為精確,探測(cè)層位更為精細(xì),能分辨更多層位,與巖性錄井結(jié)果最接近,在靜校正量獲取方面具有明顯優(yōu)勢(shì)。通過三種表層調(diào)查的比對(duì),分析了不同方法的適用范圍,為該工區(qū)選擇合適的表層調(diào)查方法及方法參數(shù)選取提供依據(jù),同時(shí)為其他地表復(fù)雜區(qū)域進(jìn)行表層調(diào)查提供參考。
[Abstract]:In seismic exploration, the near surface inhomogeneity makes it difficult to excite, receive and static correction. The surface geological conditions in the eastern part of Huludao, western Liaoning Province, are complicated, and the velocity and thickness of shallow surface vary greatly. The surface survey directly affects the imaging effect of underground media. In order to make the first seismic exploration in this area obtain accurate static correction data and provide the basis for well depth design, the surface survey method suitable for this area is studied. At the same time, in order to meet the needs of the National Deep Exploration Project for the comparative study of experimental methods, combined with the working principles of three surface survey methods, small refraction, surface micrologging and in-well micrologging, three methods were used to do the same point comparison experiments in the working area. The applicability and accuracy of different investigation methods are analyzed. The results show that the results obtained by the three methods are consistent with those obtained by lithologic logging, which can effectively detect the buried depth of high speed formation and guide the design of well depth, among which the small refraction cost is relatively low. Suitable for flatter sections on the surface, although not precise enough to find high speed zones accurately, can be used for well depth design or as a supplement to micrologging methods; surface micrologging is suitable for areas where mountain height is water free or where serious water leakage is caused by orogenic breakage zones, It is necessary to have a good coupling between the geophone and the earth, and the micrologging in the well is the most accurate, the detection layer is more precise, and it can distinguish more layers, which is the closest to the lithologic logging results. Through the comparison of three kinds of surface survey, the application range of different methods is analyzed, which provides the basis for selecting suitable surface survey methods and method parameters in this work area. At the same time, it provides a reference for other surface complex areas to conduct surface survey.
【作者單位】： 吉林大學(xué)儀器科學(xué)與電氣工程學(xué)院;中國石油大學(xué)(北京)地球物理與信息工程學(xué)院;教育部地球信息探測(cè)儀器重點(diǎn)實(shí)驗(yàn)室;吉林大學(xué)地球科學(xué)學(xué)院;
【基金】：國家深部探測(cè)技術(shù)與實(shí)驗(yàn)研究專項(xiàng)SinoProbe-09-06(201311197,201011083) 高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金項(xiàng)目(20110061110053)~~
【分類號(hào)】：P631.4;P631.81

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