本文選題：羌塘 + 隆鄂尼-鄂斯瑪�。� 參考：《成都理工大學》2017年碩士論文

【摘要】：巖相古地理是研究沉積作用和一系列的盆地演化,分析不同沉積環(huán)境下沉積物特征及分布規(guī)律,進而分析油氣及固體礦產(chǎn)形成的物質基礎與條件、油氣與固體礦產(chǎn)資源潛力的分布規(guī)律,并且進一步指導它們的勘探工作。本論文的題目來自于《羌塘盆地金星湖-隆鄂尼地區(qū)油氣資源戰(zhàn)略調查》項目之“羌塘重點區(qū)塊調查與評價”子項目,選取子項目中的隆鄂尼-鄂斯瑪?shù)貐^(qū)的中侏羅統(tǒng)布曲組為研究對象,本文運用現(xiàn)代沉積學理論,對研究區(qū)布曲組進行了詳細的巖石、結構、沉積構造、沉積相以及巖相古地理的研究,并在此基礎上對中侏羅統(tǒng)布曲組的生油、儲層、有利油氣遠景區(qū)進行了簡要的分析。羌塘盆地北界為可可西里—金沙江縫合帶,南界為班公湖—怒江縫合帶,羌塘盆地又被中央隆起帶分為南、北兩個坳陷。本文研究區(qū)屬于南羌塘坳陷內的一部分,西起西藏雙湖縣范圍內的隆鄂尼地區(qū),東至安多縣附近的鄂斯瑪?shù)貐^(qū),大地坐標為東經(jīng)88°30′~90°30′,北緯32°30′~33°。根據(jù)筆者野外實測剖面、觀測剖面、路線追蹤調查以及鉆井資料,結合前人研究成果的綜合分析,取得了以下幾點認識。1.隆鄂尼-鄂斯瑪?shù)貐^(qū)地層在走向上總體呈東西向延伸,在傾向上具有南北分帶的特征。依據(jù)地層的巖石組合、生物化石特征等,將研究區(qū)地層從北向南可劃分為三個地層分區(qū),即北部的蒂讓碧錯-查郎拉地層分區(qū)、中部的畢洛錯-昂達爾錯-達卓瑪?shù)貙臃謪^(qū)、南部的多瑪-色哇-扎曲地層分區(qū)。蒂讓碧錯-查郎拉地層分區(qū)主要為上三疊統(tǒng)土門格拉組和新生代地層;畢洛錯-昂達爾錯-達卓瑪?shù)貙臃謪^(qū)以發(fā)育布曲組含油白云巖、顆�；�?guī)r及少量膏鹽巖、褐色及紫色砂巖、粉砂質泥巖等為特征;多瑪-色哇-扎曲地層分區(qū)發(fā)育布曲組暗色微泥晶灰?guī)r夾少量泥頁巖。2.研究區(qū)中侏羅統(tǒng)布曲組的巖石類型主要以碳酸鹽巖為主,碎屑巖比較少。只有在研究區(qū)東邊的曲巴地貢瑪至達卓瑪一帶發(fā)現(xiàn)了砂巖、粉砂巖、泥巖以及多瑪-色哇-扎曲地層分區(qū)內的曲瑞恰乃剖面、戳潤曲剖面等發(fā)現(xiàn)了泥巖。碳酸鹽巖中主要為灰?guī)r以及白云巖并且大面積分布,灰?guī)r主要為各種顆粒灰?guī)r以及泥晶灰?guī)r;白云巖中可見大量的藻紋層白云巖以及晶粒白云巖;部分地區(qū)可見少量的石膏。3.通過對布曲組五條基干剖面各方面綜合研究,結合白云巖及頂?shù)装寤規(guī)r的包裹體測溫和碳氧同位素數(shù)據(jù)分析,研究區(qū)內的沉積相可劃分為:潮坪相(包括潮下淺灘相)、瀉湖相、陸棚相。4.在多條單剖面沉積相分析基礎上,結合數(shù)十條路線追蹤剖面調查分析和布曲組上(夏里組)、下(曲色色哇組)層位特殊巖類(油頁巖、膏鹽巖)分布及古地理繼承性分析,編制了隆鄂尼-鄂斯瑪中侏羅世布曲期的巖相古地理圖。首次提出研究區(qū)可劃分為:隆起剝蝕區(qū)、潮坪相帶、瀉湖相帶、潮下淺灘相帶和陸棚相帶等5個相帶。5.在巖相古地理的研究基礎上,結合相關資料以及測試分析結果,對隆鄂尼-鄂斯瑪?shù)貐^(qū)的生油、儲層、有利油氣遠景區(qū)進行了簡單的分析。認為古油藏帶的生油巖主要分布于瀉湖相帶,儲層主要分布于瀉湖相周圍的潮坪及潮下淺灘相帶,有利油氣勘探遠景區(qū)應為研究區(qū)東段的鄂斯瑪北地區(qū)。
[Abstract]:Paleogeographic evolution of sedimentation and is a series of basin analysis under different sedimentary environment of sediment characteristics and distribution, and then analyzes the material foundation and conditions for oil and gas and solid mineral formation and distribution of oil and gas and solid mineral resource potential, and further guide the exploration work. The title of this paper from "the Qiangtang basin uplift area, Hubei Lake - Venus oil-gas resources investigation project of" key > Qiangtang block the investigation and evaluation of sub project, Middle Jurassic Buqu Formation in selected sub project in Hubei, Hubei smart long area as the research object, this paper uses the modern theory of sedimentology. The study area Buqu group carried out a detailed rock structure, sedimentary structure, sedimentary facies and lithofacies palaeogeography study, and on the basis of the Middle Jurassic Buqu Formation oil source, reservoir, favorable area of oil-gas are briefly Analysis of the North Qiangtang basin. The Hoh Xil Jinsha River suture zone, the southern boundary of the Bangong Lake Nu River suture zone, the Qiangtang basin has been divided into the central uplift belt of South, north two depression. This study area belongs to the southern Qiangtang Basin in the west part, Tibet Shuanghu county within the scope of the lung, Hubei area, near the East Hubei Sima Amdo county area, geodetic coordinates of longitude 88 degrees 30 degrees 30 '' ~90 30 ', north latitude 32 degrees ~33 degrees. According to the measured field profile, profile, route tracking survey and drilling data, combining with the comprehensive analysis of previous research results, made the following.1. Hubei Hubei long Nepal - Smart formation into overall east-west extension, with north-south zone feature in the tendency. According to the formation of rock assemblages of fossils characteristics, the strata in the study area from the north to the South can be divided into three stratigraphic regions, namely north of the pedicle Let bi - wrong Chalangla stratigraphicdivision, central biluocuo - ang Dahl fault Dazhuoma stratigraphic regions, south of Sodom - color Wow - Zhaqu stratigraphicdivision. Tugendhat Bi wrong - Chalangla stratigraphic division is mainly on the three Triassic tumengela group and Cenozoic strata; biluocuo - ang Dahl fault Dazhuoma stratigraphic area by the development of Buqu oil-bearing dolomite, limestone particles and a small amount of salt rock, brown and purple sandstone, silty mudstone and other characteristics; - Wow - Zhaqu Duoma color development stratigraphic division Buqu dark micro micrite shale with minor study area in.2. the Middle Jurassic buquformation rock types mainly in carbonate rocks, clastic rocks in the study area is relatively small. Only the East Qu BA from Dazhuoma to the area found in sandstone, siltstone, mudstone and Duoma - color Wow - Zhaqu formation District Ruiqia is curved section, curved profile stamp run found the mud rock carbon. Acid in salt rock is mainly limestone and dolomite and limestone area distribution, mainly for a variety of grain limestone and micrite dolomite; observed in algal laminated dolomite and crystalline dolomite; some areas showed a few gypsum.3. through sets of five aspects of a comprehensive study on the main profile Buqu, combined with analysis of dolomite and limestone in the top and bottom temperature of fluid inclusions and carbon oxygen isotope data, study of sedimentary zone facies can be divided into: tidal flat facies (including tidal shoal facies), lagoon facies, continental shelf facies.4. in a single section based on the analysis of sedimentary facies, with dozens of routes tracking profile survey and Buqu group (Xia Lizu), under (quse Sewa) special rocks (oil shale, salt rock) distribution and paleogeographic inheritance analysis, Hubei, Hubei developed long - Middle Jurassic Buqu Sima period lithofacies to Daniel. Research is put forward for the first time Area can be divided into: uplift zone, tidal flat facies, lagoon facies, shallow subtidal facies and shelf facies of 5 phase with.5. based on the study of lithofacies paleogeography, combining with the related data and analysis results of Hubei, Hubei long smart oil reservoir area. Prospective areas of favorable oil and gas are briefly analyzed. That source rocks with ancient reservoir mainly distributed in lagoon facies, tidal flat reservoirs mainly distribute in the lagoon and surrounding tidal shoal facies, favorable oil and gas exploration area as the study area in the eastern part of Hubei should be smart north area.

【學位授予單位】：成都理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P534.52;P512.2

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