本文選題：準(zhǔn)噶爾盆地 + 頁(yè)巖氣　； 參考：《成都理工大學(xué)》2017年碩士論文

【摘要】：論文以準(zhǔn)噶爾盆地東南緣中二疊統(tǒng)蘆草溝組黑色頁(yè)巖為研究對(duì)象,在前人研究基礎(chǔ)上,通過路線調(diào)查、剖面實(shí)測(cè),并結(jié)合鉆井資料及樣品分析測(cè)試數(shù)據(jù),系統(tǒng)研究了蘆草溝組黑色頁(yè)巖的沉積特征、生烴特征、儲(chǔ)集特征以及含氣性特征等頁(yè)巖氣地質(zhì)特征,并取得了以下成果和認(rèn)識(shí):根據(jù)內(nèi)蘆草溝組下、中、上三段縱向上的巖性、巖相變化規(guī)律以及沉積相特征,認(rèn)為研究區(qū)蘆草溝組自下而上整體呈現(xiàn)為扇三角洲-半深湖-深湖環(huán)境下的水體擴(kuò)張加深的過程。博格達(dá)地區(qū)既為沉積中心也為沉降中心。有機(jī)地化方面,蘆草溝組富有機(jī)質(zhì)頁(yè)巖中干酪根類型以Ⅰ型為主,Ⅱ1型次之;TOC含量高,平均可達(dá)4.40%;鏡質(zhì)體反射率(Ro)介于0.62%-1.27%之間,平均值0.8%,處于低成熟階段。儲(chǔ)集能力方面,蘆草溝組頁(yè)巖儲(chǔ)層的基質(zhì)孔隙度平均值0.98%,滲透率平均值0.04mD,總體具有特低孔特低滲特征;微觀上多發(fā)育連通性較差的基質(zhì)粒間孔隙;結(jié)合ZY3井測(cè)錄井資料,認(rèn)為蘆草溝組頁(yè)巖氣主要儲(chǔ)集空間類型為裂縫或微裂縫。脆性度方面,蘆草溝組頁(yè)巖樣品的柏松比平均值為0.22,楊氏彈性模量平均值為1.34×104MPa,再結(jié)合其交會(huì)圖,以及X衍射定量測(cè)試的脆性指數(shù)(66.98%),均反映蘆草溝組頁(yè)巖脆性度高,具有良好的可壓裂性。含氣性方面,54件樣品總含氣量平均值為0.39 m3/t,總含氣量0.5 m3/t的樣品所控制的厚度累計(jì)為77m,連續(xù)有效厚度25m;而高含氣段多為裂縫發(fā)育段,受TOC含量影響較小;Langmuir等溫吸附試驗(yàn)顯示蘆草溝組頁(yè)巖具有較強(qiáng)的吸附能力。通過分析研究,總結(jié)出研究區(qū)蘆草溝組頁(yè)巖氣富集主控因素,其中有利因素:蘆草溝組富有機(jī)質(zhì)頁(yè)巖發(fā)育于半深湖-深湖相、連續(xù)有效厚度大、TOC含量高、儲(chǔ)集能力強(qiáng);不利因素:熱成熟度較低、構(gòu)造復(fù)雜且斷裂較發(fā)育。初選烏魯木齊向斜為研究區(qū)蘆草溝組頁(yè)巖氣勘探有利區(qū)。
[Abstract]:In this paper, the black shale of Lucaogou formation of Middle Permian in the southeastern margin of Junggar Basin is taken as the research object. On the basis of previous studies, through route investigation, profile measurement, and combined with drilling data and sample analysis test data, The sedimentary characteristics, hydrocarbon generation characteristics, reservoir characteristics and gas-bearing characteristics of the black shale of the Lucaogou formation are systematically studied, and the following results and understandings are obtained: according to the longitudinal lithology of the lower, middle and upper third member of the inner Lucaogou formation, The lithofacies variation law and sedimentary facies characteristics suggest that the Lucaogou formation in the study area presents a process of water expansion and deepening from bottom to top in the environment of fan delta-semi-deep lake and deep lake. The Bogda area is a sedimentation center as well as a sedimentation center. In organic geochemistry, the kerogen types in organic shale of Luchaogou formation are mainly type 鈪，

本文編號(hào)：2013995