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題 名 | 澎湖盆地W構造油岩對比參數研究=The Study of the Oil and Rock Correlation Parameters Applied in the W Structure of the Penhu Basin |
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作 者 | 吳素慧; 郭政隆; 邱仲信; 林政遠; 李焜發; | 書刊名 | 探採研究彙報 |
卷 期 | 21 1998.11[民87.11] |
頁 次 | 頁315-331 |
分類號 | 457.2 |
關鍵詞 | 油岩對比; 生物指標; 水合熱裂; 澎湖盆地; Penhu basin; Hydropyrolysis; Biomarker; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究主要是選定澎湖盆地 W 構造生油岩,利用水合熱製模擬油氣生成實驗之產 物,進行氣相層析質譜生物指標分析,及其各種油岩對比參數適用性與受排放移棲作用影響 之研究。並實際應用於發現之原油或砂岩所含碳氫化合物來源之研判。 由水合熱裂產物分析結果顯示, 4 α -methylsteranes 來做為湖相藻有機物類型來源之探 討,然在做油岩對比源岩追蹤探討時,尚需考慮成熟度與受排放移棲作用影響之因素。三環 境�I烷在以湖相藻類有機物類型為主之原油與生油岩中為一明顯來源指標,其受成熟度變化 因素影響不大, 此相對含量亦可做為源岩有機物類型及油岩對比追蹤參考。 類固烷ββ / (ββ + αα) Steranes ( C �V)與 20S/ ( 20S+20R ) Steranes ( C �V)二成熟 參數相當適合做為原油成熟度分析及其源岩追蹤對比時之成熟度研判。由原油、砂岩萃取物 與頁岩萃取物之生物指標對比及應用水合熱裂產物分析結果顯示,W-1A 號井 2001-2023 公 尺所發現的原油應源自類似 W-1A 號井 2400 ∼ 2424 公尺與 W-3 號井 2088-2710 公尺地 層以湖相藻類有機物類型為主,接近產油氣尖峰期之生油源岩。 W-1A 號井 2585.5 公與尺 W-5B 號井二千一百多公尺深之砂岩所含碳氫化合物具類似的來源特性, 其與 W-1A 號井 2001 ∼ 2023 公尺原油源自不同來源特性之生油源岩。 前者應源自於具有與 W-1A 號井 3744 ∼ 3754 公尺岩樣所在地層類似有機物來源,但含較多海相有機物, 且處於油氣生成 尖峰之類似或同一有機相生油源岩。 其中 W-5B 號井砂岩所含碳氫化合物源自成熟度較 W-1A 號井者為高或由較遠移棲而來。 |
英文摘要 | A hydropyrolysis, simulating experimental results of oil generation, has been applied on the source rock drilled in W structure of the Penhu Basin to proceed GCMS biomarker analysis and study the feasibility of the oil and rock correlation parameters and its influence from expulsion and migration of hydrocarbon. Simulation results have been applied to track the origin of the discovered oil and free hydrocarbon trapped in sand. Based on the analysis of the results of hydropyrolysis, 4 α - methylsteranes can be provided as a criterion for identification of organic matter of lacustrine algae. Influence from maturity and expulsion of hydrocarbon must be taken into account while track the originated source rock through oil and rock correlation technique. Tricyclic terpanes are another crucial markers for identification of organic matter of marine source. Being influenced only subtly by hydrocarbon maturity, relative contents of tricycle terpanes can be referred to the correlation of oil and rock. Maturation parameters for steranes ββ /( ββ + αα ) Steranes (C �V ) and 20S/(20S+20R) Steranes (C �V ) are suitable for analysis of maturity of oil and its originated source rock. Based on biomarker correlation between oil, free hydrocarbon in sand and source rock, oil at the zone between 2001 M and 2023 M in W-1A well was generated from rocks with similar lacustrine organic matters as those in strata distributed between 2400 M and 2424 M in W-1A well and between 2088 M and 2710 M in W-3 well, but buried deeper in a oil generation peak zone. Free hydrocarbon at a depth slightly over 2000 M in the W-1A and the W-5B wells was generated from rock, which contains similar organic matter as that found in shale right underneath the analyzed sand sample in the W-1A well and is buried in a oil generation peak zone. Compared to free hydrocarbon in the W-1A well, that in the W-5 well was generated from more matured source rock or had been migrated more distance away. |
本系統中英文摘要資訊取自各篇刊載內容。