本文關(guān)鍵詞：四川盆地龍馬溪組頁(yè)巖氣儲(chǔ)層各向異性巖石物理建模及應(yīng)用（英文）　出處：《Applied Geophysics》2017年01期 　論文類型：期刊論文

  更多相關(guān)文章： 龍馬溪 頁(yè)巖 各向異性 巖石物理 壓實(shí)指數(shù)

【摘要】：不同類型的頁(yè)巖,微觀物性特征差異明顯,本文針對(duì)四川盆地龍馬溪組頁(yè)巖氣儲(chǔ)層進(jìn)行巖石物理建模及VTI各向異性參數(shù)反演。首先,基于前人對(duì)粘土礦物的定向排列是產(chǎn)生頁(yè)巖固有各向異性主要原因這一地質(zhì)認(rèn)識(shí),在巖石物理建模過(guò)程中引入粘土礦物壓實(shí)指數(shù)CL參數(shù)描述粘土礦物的彈性各向異性。之后,基于巖石物理模型開(kāi)發(fā)反演算法,計(jì)算頁(yè)巖儲(chǔ)層CL參數(shù)及Thomsen各向異性參數(shù),解決了由于無(wú)法測(cè)得與井壁垂直方向上的聲波速度,各向異性直接測(cè)量存在困難的問(wèn)題。計(jì)算結(jié)果表明,通過(guò)在巖石物理建模中引入粘土壓實(shí)參數(shù),反演方法能夠合理估計(jì)龍馬溪頁(yè)巖儲(chǔ)層的彈性各向異性,反映了龍馬溪頁(yè)巖的微觀物性特征。進(jìn)一步分析發(fā)現(xiàn),龍馬溪頁(yè)巖中粘土含量與參數(shù)CL相關(guān)性較弱,表明粘土礦物的多少對(duì)其壓實(shí)或各向異性程度影響較小。同時(shí),參數(shù)CL在目標(biāo)層龍馬溪組底部和五峰組具有高異常值,反映了儲(chǔ)層微觀結(jié)構(gòu)與含油氣特征具有關(guān)聯(lián)性。最后,基于模型構(gòu)建了巖石物理模板,可用于儲(chǔ)層測(cè)井?dāng)?shù)據(jù)與多物性參數(shù)關(guān)系的定量解釋。測(cè)井?dāng)?shù)據(jù)在巖石物理模板上的合理分布也驗(yàn)證了巖石物理建模方法的有效性。
[Abstract]:Different types of shale have different microphysical properties. In this paper, rock physical modeling and VTI anisotropy parameter inversion for the shale gas reservoir of Longmaxi formation in Sichuan Basin are carried out. Based on the previous geological understanding that the directional arrangement of clay minerals is the main reason for the inherent anisotropy of shale. The clay mineral compaction index CL parameter is introduced to describe the elastic anisotropy of clay minerals in the process of rock physical modeling. Then the inversion algorithm is developed based on the rock physical model. The CL parameters and Thomsen anisotropy parameters of shale reservoir are calculated to solve the acoustic velocity which can not be measured in the vertical direction of the well wall. The calculation results show that the inversion method can reasonably estimate the elastic anisotropy of Longmaxi shale reservoir by introducing clay compaction parameters into rock physical modeling. Further analysis shows that the clay content in Longmaxi shale has a weak correlation with the parameter CL. The results show that the amount of clay minerals has little effect on the compaction or anisotropy. Meanwhile, the parameter CL has high abnormal values at the bottom of Longmaxi formation and Wufeng formation. It reflects the correlation between reservoir microstructure and petroliferous characteristics. Finally, the physical template of rock is constructed based on the model. It can be used for quantitative interpretation of the relationship between reservoir logging data and multi-physical parameters, and the reasonable distribution of logging data on rock physical templates also verifies the validity of rock physical modeling method.
【作者單位】： 頁(yè)巖油氣富集機(jī)理與有效開(kāi)發(fā)國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)石化頁(yè)巖油氣勘探開(kāi)發(fā)重點(diǎn)實(shí)驗(yàn)室;中國(guó)石化石油勘探開(kāi)發(fā)研究院;吉林大學(xué);
【基金】：supported by the Foundation of State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development(No.G5800-16-ZS-KFZY002) the NSFC and Sino PEC Joint Key Project(No.U1663207) the National Natural Science Foundation of China(No.41404090)
【分類號(hào)】：P618.13
【正文快照】： Introductionand Nur,1992).Based on the early rock physics studies of the Bakkenshale in North America(Vernik and Nur,1992;Vernik,The complex microstructure and reservoir properties of1994;Vernik and Liu,1997),Carcione(2000)studiedshales require the appli

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