本文選題：金羊盆地　切入點：羊D井　出處：《地質(zhì)通報》2017年04期

【摘要】：在中國地質(zhì)調(diào)查局沈陽地質(zhì)調(diào)查中心實施的"羊D1"井的中侏羅統(tǒng)髫髻山組火山巖中見多處油氣顯示,取得了油氣新發(fā)現(xiàn)。對該井已發(fā)現(xiàn)的2件油砂樣品中的原油采用氣相色譜-質(zhì)譜技術(shù)(GC-MS)進行了分析測試,結(jié)果顯示,2個油砂樣品的地球化學特征一致,表現(xiàn)為鏈烷烴呈現(xiàn)出單峰態(tài)的分布,主峰碳數(shù)分別為C_(21)和C_(22),無明顯奇碳數(shù)優(yōu)勢,姥植比值低;萜類化合物表現(xiàn)為,三環(huán)萜烷以C_(23)為主峰呈正態(tài)分布,C_(24)四環(huán)萜烷與C_(26)三環(huán)萜烷豐度相當,伽馬蠟烷含量較高;甾類化合物表現(xiàn)為規(guī)則甾烷相對含量關(guān)系為C_(27)C_(29)C_(28),以C_(27)甾烷占優(yōu)勢的不對稱"V"形分布。這些指標總體指示,原油為成熟油,對應烴源巖沉積于偏還原性的湖相環(huán)境,母質(zhì)來源主要為藻類等低等水生生物,陸源高等植物也具有一定貢獻。通過和周邊的北票組烴源巖進行油巖對比研究發(fā)現(xiàn),油砂樣品中的原油可能來自于盆地內(nèi)下伏的下侏羅統(tǒng)北票組烴源巖的貢獻。研究結(jié)果說明,北票組在金羊盆地分布廣泛,其烴源巖可能具有較好的生油潛力,金羊盆地是一個具有勘探潛力的含油氣盆地。
[Abstract]:In the volcanic rocks of the Tiaojishan formation of the Middle Jurassic in the YangD1 well implemented by the Shenyang Geological Survey Center of China Geological Survey, there are many oil and gas indications in the volcanic rocks of the Tiaojishan formation in the Middle Jurassic. A new discovery of oil and gas has been made. The crude oil of 2 oil sand samples found in this well has been analyzed and tested by gas chromatography-mass spectrometry (GC-MS). The results show that the geochemical characteristics of the two oil sand samples are the same. The main peak carbon number of alkanes is C _ (21) and C _ (22). There is no obvious advantage of odd carbon number, and the ratio of base-planting is low. The terpenoids are characterized by, The main peak of tricyclic terpene is CX 23). The main peak of tricyclic terpene is normal distribution (CX) 24) tetracyclic terpene is the same as CX 26) tricyclic terpene is abundant, and the content of gamma-wax is relatively high. The relative content of steroid compounds shows a regular relationship of relative sterane content in the form of C _ S _ 27C _ T _ 29C _ T _ T _ (28), based on the asymmetric "V" shape distribution of sterane dominance. These indexes indicate that the crude oil is a mature oil, corresponding to the source rock deposited in a deoxidizing lacustrine environment, and that the source rock is deposited in a deoxidizing lacustrine environment. The source of parent material is mainly algae and other low-grade aquatic organisms, and terrestrial higher plants also have some contribution. A comparative study of oil and rock with the surrounding source rocks of Beipiao formation shows that, The crude oil in the oil sand samples may come from the source rocks of the lower Jurassic Beipiao formation in the basin. The results show that the Beipiao formation is widely distributed in the Jinyang Basin, and its source rocks may have good oil generation potential. Jinyang Basin is an oil and gas bearing basin with exploration potential.
【作者單位】： 中國地質(zhì)調(diào)查局沈陽地質(zhì)調(diào)查中心;中國石油遼河油田分公司;長江大學資源與環(huán)境學院;
【基金】：中國地質(zhì)調(diào)查局項目《松遼外圍南部盆地群油氣基礎地質(zhì)調(diào)查》(編號:DD20160167)和《遼寧金羊盆地油氣基礎地質(zhì)調(diào)查》(編號:12120115001301)
【分類號】：P618.13
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本文編號：1695148