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題 名 | 震測相與古沉積環境--CDA及CDC附近地區=Seismic Facies and Paleoenvironments in the CDA and CDC Areas |
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作 者 | 黃旭燦; 傅式齊; 陳大麟; 蘇錻斌; | 書刊名 | 探採研究彙報 |
卷 期 | 20 1997.11[民86.11] |
頁 次 | 頁29-44 |
分類號 | 457.2 |
關鍵詞 | 岩心鑑定; 沉積體系; 儲集層特性; 層序; Core analysis; Depositional system; Reservoir characteristics; Sequence; |
語 文 | 中文(Chinese) |
中文摘要 | 由A-1井、A-5井、C-2井岩心的鑑定分析中發現,於南臺西盆地內的此三口井之 岩心,在沉積環境之變化很大,除了以湖泊相為主的沉積體系外,並間夾有海相及近岸 相之古沉積環境。 在此三口井的豈心儲集層特性分析中,發現此三口井的岩心均不具有良好的滲透 率,A-1井、A-5井的岩心孔隙率也低。但於C-2井則較佳,比較好的孔隙特徵可能與 其古河口以及潮汐的淘選作用有關。因此,在臺南西盆地中除研究其古沉積相外,在追 蹤良好淘選作用的砂體之研究,也將是未來重要的課題。 在盆地內的張裂層序約可分為六個準層序(E1-E6)。E1與E2。E1與E2為始新世早期之沉積 是屬於先張裂層序(pre-rift sequence)。E3及E4是屬於始新世中期的主要張裂層序 (synrift sequence),E5及E6是屬於始新世晚期的次要張裂層序。 |
英文摘要 | According to the analysis on the cores from wells A-1, A-5, and C-2, the Eocene sedimentary environments in the southern Taihsi Basin are complex and inclued lacustrine, occasionally with shallow marine, and nearshore depositional system. Permeabilities of these cores are poor. The porosities of A-1 and A-5 are also extremely low. However, the porosity in C-2 well is better than that in the two wells (A-1, and A-5), possibly because originated from good sorting by tidal process in the estuarine environments. Therefore, it could be deduced that, in addition to analysis on the facies of paleoenvoronment, reservoir sandstones of high quality due to good sorting process is an important future task. The Eocene strata can be divided into 6 parasequence (E1-E6) in the Taihsi Basin. E1 and E2 are considered as pre-rift sequences in the Early Eocene. E3 and E4 are the major facies of synrift sequences in the Middle Eocene, while E5 and E6 are the secondary facies of the synrift sequences in the Late Eocene. |
本系統中英文摘要資訊取自各篇刊載內容。