本文關(guān)鍵詞： 成藏規(guī)律 輸導(dǎo)體系 沙灣組 準(zhǔn)噶爾盆地　出處：《巖性油氣藏》2017年04期 　論文類(lèi)型：期刊論文

【摘要】：由于對(duì)準(zhǔn)噶爾盆地新春地區(qū)新近系沙灣組油氣藏的成藏條件及成藏規(guī)律認(rèn)識(shí)不清,導(dǎo)致多口探井連續(xù)失利。通過(guò)對(duì)區(qū)域構(gòu)造、油源對(duì)比、輸導(dǎo)體系及成藏特征等的綜合分析表明:成藏有利條件包括構(gòu)造演化、烴源巖、儲(chǔ)層、蓋層和圈閉等,油氣生成于四棵樹(shù)凹陷侏羅系,自南向北運(yùn)移,富集于沙灣組中下部;沙一段Ⅰ砂組發(fā)育厚砂層,單層厚度大,對(duì)油氣的運(yùn)聚起到了高效輸導(dǎo)的作用,沙一段Ⅱ砂組和沙二段均以砂泥巖互層為主,在喜山期小斷層的縱向溝通作用下,在沙二段薄砂巖儲(chǔ)層中最終成藏;侏羅系和新近系2套毯砂為車(chē)排子凸起區(qū)油氣遠(yuǎn)距離運(yùn)移提供了橫向輸導(dǎo)條件,不整合面與上傾尖滅砂體的耦合關(guān)系控制著沙一段Ⅰ砂組油氣的富集,喜山期形成的小斷層與砂體耦合關(guān)系控制著沙一段Ⅱ砂組和沙二段的油氣成藏。
[Abstract]:Due to the unclear understanding of the reservoir forming conditions and the reservoir forming rules of the Neogene Shawan formation in the Xinchun area of Junggar Basin, many exploration wells continue to fail. Through the regional structure, oil source correlation. The comprehensive analysis of transportation system and reservoir forming characteristics shows that the favorable conditions of reservoir formation include structural evolution, hydrocarbon source rock, reservoir, cap rock and trap, etc. Oil and gas are generated in Jurassic system of Sikosu sag and migrated from south to north. Enriched in the middle and lower part of Shawan formation; The thick sand layer is developed in the sand formation 鈪，

本文編號(hào)：1471452