【摘要】：鄂爾多斯盆地奧陶系馬家溝組近年來多個億噸級氣田的發(fā)現(xiàn),展現(xiàn)其碳酸鹽巖儲層豐厚的油氣資源潛力,但主要集中于馬五段。為擴大勘探區(qū)域,本文針對馬四段沉積相研究方面的不足,主要以沉積巖石學(xué)、構(gòu)造地質(zhì)學(xué)、地球化學(xué)等多學(xué)科領(lǐng)域的理論和方法為指導(dǎo),結(jié)合該區(qū)研究及勘探現(xiàn)狀,采用多種技術(shù)手段,基于野外剖面、井下巖芯及測井和室內(nèi)分析鑒定資料,綜合分析認(rèn)為,研究區(qū)馬家溝組四段主體為碳酸鹽巖臺地,僅在西、南邊緣區(qū)發(fā)育斜坡-海槽。臺地相劃分為臺坪、洼地、淺灘、潮坪、臺地邊緣及斜坡等6個亞相帶及相應(yīng)的11個微相；海槽相劃為海槽亞相及2個微相。與此同時,在充分研究區(qū)內(nèi)馬四段的沉積巖石學(xué)特征的基礎(chǔ)上建立了各微相的沉積相標(biāo)志,分析了單井和連井沉積相的縱向演化和橫向展布,再現(xiàn)了研究區(qū)馬家溝組四段巖相古地理面貌。在此基礎(chǔ)上,建立了研究區(qū)馬四時期沉積模式。
[Abstract]:In recent years, the discovery of several hundred million dwt gas fields in the Ordovician Majiagou formation in Ordos Basin shows the rich oil and gas resource potential of its carbonate reservoir, but it is mainly concentrated in the Ma Wu formation. In order to expand the exploration area, this paper aims at the deficiency in the study of sedimentary facies of the fourth member of Ma, mainly guided by the theories and methods in the fields of sedimentary petrology, tectonic geology, geochemistry and so on, combined with the present situation of research and exploration in this area. Based on field profile, core, logging and laboratory analysis data, it is considered that the main body of the fourth member of Majiagou formation in the study area is carbonate platform, and only the slope and trough are developed in the west and south margin. The platform facies are divided into 6 subfacies zones, such as platform, depression, shoal, tidal flat, platform margin and slope, and the trough facies are divided into trough subfacies and 2 microfacies. At the same time, the sedimentary facies markers of each microfacies are established on the basis of a full study of the sedimentary petrological characteristics of the fourth member in the area, and the longitudinal evolution and horizontal distribution of the single and connected well sedimentary facies are analyzed. The lithofacies paleogeography of the fourth member of the Majiagou formation in the study area is reproduced. On the basis of this, the sedimentary model of Ma 4 period in the study area was established.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

【參考文獻】

相關(guān)期刊論文 前10條

1 李安仁,劉文均,張錦泉,耿愛琴,郝蜀民;鄂爾多斯盆地早奧陶世沉積特征及其演化[J];成都地質(zhì)學(xué)院學(xué)報;1993年01期

2 陳旭,戎嘉余,張元動,樊雋軒;奧陶紀(jì)年代地層學(xué)研究評述[J];地層學(xué)雜志;2000年01期

3 霍勇;羅順社;龐秋維;金姍姍;羅軍梅;;鄂爾多斯臺地靖邊潛臺南部中奧陶統(tǒng)馬五_1~2巖相古地理[J];中國地質(zhì);2012年01期

4 賈振遠(yuǎn),蔡華,蔡忠賢,秦玉娟;鄂爾多斯地區(qū)南緣奧陶紀(jì)層序地層及海平面變化[J];地球科學(xué);1997年05期

5 金之鈞;中國海相碳酸鹽巖層系油氣勘探特殊性問題[J];地學(xué)前緣;2005年03期

6 馮增昭,鮑志東,康祺發(fā),張永生,譚健,李振亞,龐福民,趙學(xué)仁;鄂爾多斯奧陶紀(jì)古構(gòu)造[J];古地理學(xué)報;1999年03期

7 付金華,鄭聰斌;鄂爾多斯盆地奧陶紀(jì)華北海和祁連海演變及巖相古地理特征[J];古地理學(xué)報;2001年04期

8 傅強;王家林;周祖翼;;鄂爾多斯盆地中部氣田——奧陶系馬五_1層的古巖溶作用與天然氣富集[J];海相油氣地質(zhì);1998年02期

9 曾允孚;王成善;;海洋碳酸鹽沉積相模式[J];礦物巖石;1991年03期

10 鄒才能;張光亞;陶士振;胡素云;李小地;李建忠;董大忠;朱如凱;袁選俊;侯連華;瞿輝;趙霞;賈進華;高曉輝;郭秋麟;王嵐;李新景;;全球油氣勘探領(lǐng)域地質(zhì)特征、重大發(fā)現(xiàn)及非常規(guī)石油地質(zhì)[J];石油勘探與開發(fā);2010年02期

，

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