發(fā)布時(shí)間：2018-04-25 19:54

  本文選題：富有機(jī)質(zhì)泥巖 + 頁巖氣富集條件　； 參考：《石油實(shí)驗(yàn)地質(zhì)》2017年04期

【摘要】：通過大巴山前緣地區(qū)五峰—龍馬溪組富有機(jī)質(zhì)泥巖的野外露頭、鉆井、巖心等資料的研究,對一系列巖石樣品進(jìn)行了顯微薄片、掃描電鏡、有機(jī)地化、孔滲性、比表面積、含氣性解析等多項(xiàng)實(shí)驗(yàn)測試分析,對五峰—龍馬溪組頁巖氣的富集條件進(jìn)行了綜合研究。結(jié)果表明:大巴山前緣地區(qū)富有機(jī)質(zhì)泥巖總體處在淺水—深水陸棚沉積環(huán)境下,其沉積厚度在40~70 m左右,平均有機(jī)碳含量大于2%;有機(jī)質(zhì)類型為腐泥型Ⅰ型干酪根,有機(jī)質(zhì)成熟度多數(shù)為0.82%~3.04%,達(dá)到高—過成熟階段;低滲透—低孔特征,并發(fā)育多種微觀空隙結(jié)構(gòu)。典型鉆井解剖分析認(rèn)為,頁巖氣保存條件是該區(qū)富集條件中最為關(guān)鍵的因素;未被斷裂破壞的箱狀背斜是最為有利的構(gòu)造保存條件。
[Abstract]:Based on the field data of organic mudstone rich in organic matter in Wufeng Longmaxi formation in the front of Dabashan Mountains, a series of rock samples were studied, such as microsheet, scanning electron microscope, organic geochemistry, pore permeability, specific surface area, etc. The accumulation conditions of shale gas in Wufeng-Longmaxi formation were studied. The results show that the organic mudstone in the front of the Dabashan Mountains is generally in the shallow water and deep water shelf sedimentary environment, its deposition thickness is about 4070 m, the average organic carbon content is more than 2 parts, and the organic matter type is sapropelic type 鈪，

本文編號：1802720