本文選題：川東涪陵地區(qū)　切入點(diǎn)：大安寨段　出處：《成都理工大學(xué)》2015年碩士論文

【摘要】：川東地區(qū)是四川盆地內(nèi)有利的油氣儲(chǔ)備區(qū)塊,其中下侏羅統(tǒng)自流井組大安寨段為主要的含油氣層位,油氣資源豐富,具有良好的油氣勘探前景。開(kāi)展本項(xiàng)目的研究具有明顯的經(jīng)濟(jì)效益和顯著的社會(huì)效益。以川東地區(qū)下侏羅統(tǒng)大安寨段為研究對(duì)象,在野外剖面測(cè)量、鉆井巖心描述和薄片鑒定的基礎(chǔ)上,結(jié)合測(cè)井資料、地震資料和區(qū)域構(gòu)造-沉積背景的綜合研究,以巖石微觀結(jié)構(gòu)觀察為研究手段,以大地構(gòu)造學(xué)理論、沉積盆地分析理論及沉積學(xué)理論為指導(dǎo),并結(jié)合前人的研究成果,重點(diǎn)剖析大安寨段沉積相特征及其平面展布規(guī)律,并對(duì)有利區(qū)進(jìn)行有效預(yù)測(cè)。據(jù)“點(diǎn)—線—面”的研究思路,開(kāi)展從單井分析到連井對(duì)比,從巖石學(xué)特征、沉積相標(biāo)志及地震反射響應(yīng)特征等方著手研究,最終編制出沉積相平面展布圖,為今后研究區(qū)的勘探開(kāi)發(fā)提供技術(shù)支持。通過(guò)對(duì)大安寨段沉積特征研究,取得如下重要進(jìn)展和認(rèn)識(shí):①通過(guò)相標(biāo)志的識(shí)別以及對(duì)反映沉積相垂向變化的單井相分析,確定了川東涪陵地區(qū)大安寨段主要是以碳酸鹽巖為主的湖相混合沉積體系,可識(shí)別出半深湖—深湖、湖坡、碳酸鹽淺湖、陸源碎屑淺湖和濱湖5個(gè)亞相及9個(gè)微相類(lèi)型,并建立了適合該地區(qū)的沉積相模式;②依據(jù)層序地層學(xué)原理,川東涪陵地區(qū)大安寨段可劃分出1個(gè)長(zhǎng)期、5個(gè)中期以及眾多相當(dāng)準(zhǔn)層序級(jí)別的短期基準(zhǔn)面旋回層序,經(jīng)歷了從濱、淺湖—半深湖-深湖—濱、淺湖的完整湖侵-湖退沉積演化過(guò)程;③在建立的層序格架基礎(chǔ)上,結(jié)合單井沉積相分析、沉積相連井對(duì)比分析及顆�；�?guī)r厚度圖、地層厚度圖、地震相等圖件,編制了大安寨段層序-巖相古地理圖,系統(tǒng)分析了沉積相的分布特征及時(shí)空演化規(guī)律;④在上述研究成果之上,結(jié)合前人資料,預(yù)測(cè)了大安寨段有利的非常規(guī)儲(chǔ)集體發(fā)育和頁(yè)巖氣(油)聚集成藏的“甜心”位置。
[Abstract]:East Sichuan is a favorable oil and gas reserve block in Sichuan basin, in which the Da-anzhai formation of the Lower Jurassic Ziliujing formation is the main oil-bearing gas reservoir, and the oil and gas resources are abundant. It has a good prospect of oil and gas exploration. The research of this project has obvious economic and social benefits. Taking the Da-anzhai section of Lower Jurassic in East Sichuan as the research object, the field profile survey is carried out. On the basis of core description and thin section identification, combined with logging data, seismic data and regional tectonic-sedimentary background, the microstructural observation of rock is taken as the research means and geotectonic theory is used. Under the guidance of sedimentary basin analysis theory and sedimentology theory, combined with previous research results, the characteristics of sedimentary facies and its plane distribution in Da'anzhai member are analyzed emphatically, and the favorable areas are effectively predicted. According to the research ideas of "point-line-plane", From single well analysis to continuous well correlation, from petrological characteristics, sedimentary facies markers and seismic reflection response characteristics, etc., the plane distribution map of sedimentary facies was compiled. This paper provides technical support for the exploration and development of the future study area. By studying the sedimentary characteristics of Da'anzhai member, we have made the following important progress and understanding: 1 through the identification of facies markers and the analysis of single well facies reflecting the vertical variation of sedimentary facies, The lacustrine mixed sedimentary system of the Da'anzhai formation in the Fuling area of East Sichuan Province is mainly composed of carbonate rocks. Five subfacies and nine microfacies types of semi-deep lacustry-deep lake, lake slope, carbonate shallow lake, continental clastic shallow lake and littoral lake are identified. According to the principle of sequence stratigraphy, the depositional facies model is established. According to the principle of sequence stratigraphy, the Da'anzhai formation in Fuling area of East Sichuan can be divided into 1 short term datum cycle sequence of long term, 5 middle period and many quite quasi-sequence levels, which has experienced from shore to coast. On the basis of the established sequence framework, the correlation analysis of sedimentary facies of single well, the correlation analysis of sedimentary contiguous well, the thickness map of granular limestone, the thickness map of stratum, the evolution process of shallow lake, semi-deep lake, deep lake and shore, shallow lake, transgression and retrogression of shallow lake. The sequence lithofacies paleogeography map of the Da'anzhai member is compiled, and the distribution characteristics and space-time evolution law of sedimentary facies are analyzed systematically on the basis of the above research results, combined with previous data. The favorable unconventional reservoir development and the "honey" position of shale gas accumulation in Da'anzhai formation are predicted.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P618.13

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 韓耀文,王廷棟,王海清,熊應(yīng)明,唐先益;四川八角場(chǎng)油氣田大安寨組凝析氣藏的地質(zhì)-地球化學(xué)研究[J];沉積學(xué)報(bào);1990年04期

2 梁西文;徐文禮;顧忠安;鄭榮才;文華國(guó);程超;;渝東地區(qū)大安寨段沉積相特征及有利區(qū)預(yù)測(cè)[J];巖性油氣藏;2014年02期

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本文編號(hào)：1675125