本文選題：內(nèi)蒙古西部　切入點(diǎn)：阿拉善盟　出處：《中國地質(zhì)》2017年01期 　論文類型：期刊論文

【摘要】：通過開展石炭紀(jì)—二疊紀(jì)盆地形成演化、沉積充填、烴源巖分布與地球化學(xué)特征、烴源巖熱演化史,以及石炭系—二疊系沉積之后的構(gòu)造沉積演化與油氣保存條件的綜合研究,提出了銀額盆地為石炭紀(jì)—二疊紀(jì)與中生代疊合盆地的新認(rèn)識(shí),查明石炭系—二疊系為陸內(nèi)裂谷盆地沉積產(chǎn)物,發(fā)育多套厚度大、有機(jī)質(zhì)豐度中等—高、干酪根類型以Ⅱ型為主、演化程度中等—高的良好烴源巖,明確了其油氣地質(zhì)條件。優(yōu)選的油氣遠(yuǎn)景區(qū)經(jīng)國土資源部競爭性出讓,企業(yè)加大勘探投入,于務(wù)桃亥勘查區(qū)拐子湖凹陷首鉆(拐參1井)獲初期日產(chǎn)原油51.67 m3、天然氣7290 m3的工業(yè)油氣流,溫圖高勒蘇木勘查區(qū)哈日凹陷首鉆(延哈參1井)獲日產(chǎn)天然氣9.15萬m3(無阻流量)的工業(yè)氣流及少量凝析油,實(shí)現(xiàn)了1955年勘探以來油氣的重大突破。通過對(duì)2口油氣突破井產(chǎn)層時(shí)代的厘定,以及油氣源的對(duì)比,明確了油氣產(chǎn)層時(shí)代為二疊紀(jì),指明了石炭系—二疊系良好的油氣資源前景,應(yīng)為區(qū)內(nèi)油氣勘探的主要目的層。
[Abstract]:The formation and evolution of Carboniferous and Permian basins, the sedimentary filling, the distribution and geochemical characteristics of source rocks, the thermal evolution of source rocks, the tectonic sedimentary evolution after Carboniferous and Permian deposits and the preservation conditions of oil and gas are studied. A new understanding that the Yinyu basin is a Carboniferous Permian and Mesozoic superimposed basin is proposed. It is found that the Carboniferous Permian is a sedimentary product of the intracontinental rift basin with large thickness and medium to high organic matter abundance. The main type of kerogen is type 鈪，

本文編號(hào)：1578971