生物降解稠油中瀝青質(zhì)熱模擬實(shí)驗(yàn)
發(fā)布時(shí)間:2018-08-21 08:42
【摘要】:對(duì)準(zhǔn)噶爾盆地西北緣正常原油和嚴(yán)重生物降解稠油中瀝青質(zhì)在不同溫度下熱模擬產(chǎn)物的生物標(biāo)志化合物進(jìn)行了對(duì)比分析,結(jié)果表明,300℃是較為理想的熱模擬溫度,在這種條件下,稠油瀝青質(zhì)熱模擬產(chǎn)物中生物標(biāo)志化合物的組成分布與正常原油較為一致,其生物標(biāo)志化合物組成完整,未遭受生物降解,可用于嚴(yán)重降解油的油源分析,主要表現(xiàn)為:Pr/nC_(17)值和Ph/nC_(18)值相對(duì)偏高(分別為0.66~0.71和1.01~1.21),Pr/Ph值相對(duì)較低(1.15~1.21),伽馬蠟烷指數(shù)相對(duì)較高(0.30~0.41),反映母質(zhì)沉積環(huán)境為弱還原—還原的半咸水—咸水環(huán)境;三環(huán)萜烷以"C_(20)C_(21)C_(23)"模式分布,C_(23)三環(huán)萜烷/(C_(30)藿烷+C_(23)三環(huán)萜烷)值為0.46~0.49;Ts和C_(29)Ts相對(duì)含量極低,與典型風(fēng)城組烴源巖的生物標(biāo)志化合物分布特征基本一致。
[Abstract]:The biomarker compounds of asphaltene in normal crude oil and severe biodegradable heavy oil in northwestern margin of Junggar Basin are analyzed at different temperatures. The results show that 300 鈩,
本文編號(hào):2195175
[Abstract]:The biomarker compounds of asphaltene in normal crude oil and severe biodegradable heavy oil in northwestern margin of Junggar Basin are analyzed at different temperatures. The results show that 300 鈩,
本文編號(hào):2195175
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