近年來(lái),關(guān)于細(xì)粒沉積巖的勘探日益受到重視。本論文基于對(duì)西非下剛果盆地A塊和S3塊200平方公里地區(qū)的三維地震資料解釋,對(duì)該地區(qū)烴源巖潛力進(jìn)行評(píng)價(jià)與表征研究。其中該地區(qū)地層層位自下往上依次為:鹽層、Sendji組、Likouala組、Madingo組和Paloukou組。與粗碎屑沉積物相比,烴源巖等細(xì)粒沉積物的勘探與研究較為薄弱,優(yōu)質(zhì)烴源巖發(fā)育的層段較難確定,因此本文擬通過(guò)地震相法、沉積相法及速度法等多種技術(shù)方法來(lái)預(yù)測(cè)烴源巖的分布。根據(jù)三維地震資料,生成各層位的平面厚度圖,并對(duì)重點(diǎn)層位進(jìn)行詳細(xì)研究。Madingo組主要分為上、下兩部分,通過(guò)古地貌圖及海相烴源巖分布特征的研究,可以有效預(yù)測(cè)優(yōu)質(zhì)烴源巖的分布。通過(guò)對(duì)有機(jī)質(zhì)富集的沉積發(fā)育模式、河道走向、沉積樣式等的研究,綜合認(rèn)為該區(qū)適合有機(jī)質(zhì)的富集和保存。綜合利用地質(zhì)-地球物理等相分析方法對(duì)烴源巖的分布規(guī)律、發(fā)育模式進(jìn)行研究。有機(jī)質(zhì)具有獨(dú)特的物理化學(xué)性質(zhì),使得烴源巖與非烴源巖的測(cè)井響應(yīng)差別明顯。已有研究成果表明,對(duì)有機(jī)質(zhì)敏感的測(cè)井曲線主要由自然伽馬、電阻率、聲波、密度中子等曲線,這是利用測(cè)井資料識(shí)別和評(píng)價(jià)烴源巖的基礎(chǔ)。一般情況下,有機(jī)碳含量越高...

【文章頁(yè)數(shù)】：195 頁(yè)

【學(xué)位級(jí)別】：博士

【文章目錄】：
Cover letter (resume)
PUBLUCATIONS
摘要
ABSTRACT
DEDICATION
ACRONYMS AND ABBREVATIONS
Chapter 1 Introduction
    1.1 Introduction
    1.2 Location of the area
    1.3 Exploration and research background of the study area
    1.4 objectives of the Research
    1.5 Generalized workflow
    1.6 STRUCTURE OF THE THESIS
Chapter 2 Regional Geology and Tectonic Evolution
    2.1 Introduction
    2.2 Regional geology of the area
    2.3 Geological and tectonic evolution history of the Basin
        2.3.1 Pre-rift stage (Late Jurassic to Berriasian Epoch of Early cretaceous)
        2.3.2 Syn-rift stage (upto Barremian Epoch Early Cretaceous)
        2.3.3 Post-rift stage and transitional stage (Aptian to Recent)
    2.4 Sequence Stratigraphic frame work
    2.5 Petroleum systems and hydrocarbon occurrences
        2.5.1 Source rock
        2.5.2 Reservoir rocks
        2.5.3 Seal rocks
Chapter 3 Data sets and Methodology
    3.1 Introduction to Source of data
        3.1.1 Seismic Data
        3.1.2 Well Data
        3.1.3 Base Map
        3.1.4 Thin sections
        3.1.5 Geochemical data
    3.2 Significance of the research
    3.3 Research Methodology
Chapter 4 Integrated seismic and well data interpretation
    4.1 Introduction
    4.2 Methodology
    4.3 Seismic interpretation analysis
    4.4 Source Rock development pattern analysis
        4.4.1 Structural maps (Time-depth map)
        4.4.2 Source channel analysis of Madingo group in Congo Basin
    4.5 Isochron maps
    4.6 Conclusions
Chapter 5 Analysis of the facies
    5.1 Introduction
    5.2 Methodology
    5.3 Well logs
        5.3.1 Interpretation of Facies analysis base on GR curve
        5.3.2 Analysis based on the GRP (Gamma Ray Pattern) curve
    5.4 Concept of Seismic facies analysis
        5.4.1 Sendji Formation seismic facies analysis
        5.4.2 Integrated facies analysis in Likouala Formation
        5.4.3 Integrated facies analysis in Madingo Formation
        5.4.4 Integrated facies analysis in Paloukou Formation
    5.5 Sedimentary facies
    5.6 Attributes Analysis
    5.7 Conclusion
Chapter 6 Total Organic Carbon Evaluation by well Logs
    6.1 Introduction
    6.2 Methodology
    6.3 Basic theory and background
    6.4 The Rock-Eval Data of the Mohm-1 well
    6.5 TOC Evaluation Methodologies
        6.5.1 Selection of appropriate inputs/Linear regression analysis
        6.5.2 Multiple variate method
        6.5.3 Schmocker and Hester model
        6.5.4 Passey et al. model ΔlogR Method
    6.6 Comparsion models for different data sets
    6.7 A data base approach (ANN)
        6.7.1 Back propagation network design(ANN) Theory
        6.7.2 Comparison of BP predicted TOC vs Measured TOC
    6.8 Conclusions and discussion
CHAPTER 7 SOURCE ROCK MATURTY ASSESSMENT
    7.1 Introduction
    7.2 Oil and Gas Formation
    7.3 Petroleum System
    7.4 Fundamentals of Source Rock
        7.4.1 Factor controlling source rock formation
    7.5 Thermal Transformation of Kerogene
    7.6 Kerogen Classification
    7.7 Rock Eval-Pyrolysis
    7.8 References for the Result Evaluation
    7.9 Maturity Indicators
    7.10 Source Rock Maturity Evaluation of Lower Congo Basin
        7.10.1 Rock-Eval Pyrolysis at Ma-1 well
        7.10.2 Biomarkers analysis at the Wells
    7.11 Conclusion
Chapter 8 Conclusions and Recommendations
    8.1 Main Results
    8.2 Implication for Future research directions
References



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