發(fā)布時(shí)間：2018-04-14 18:40

  本文選題：鄂爾多斯盆地 + 陸相頁(yè)巖　； 參考：《西安石油大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年05期

【摘要】：為了探究鄂爾多斯盆地南部長(zhǎng)7陸相儲(chǔ)層頁(yè)巖基質(zhì)孔隙發(fā)育影響因素,應(yīng)用氬離子拋光-掃描電鏡、X射線(xiàn)衍射能譜儀、有機(jī)碳測(cè)定、有機(jī)質(zhì)成熟度測(cè)定、高壓壓汞和Image J圖像處理等分析測(cè)試處理技術(shù)對(duì)其進(jìn)行了系統(tǒng)研究。研究表明:長(zhǎng)7陸相頁(yè)巖中的基質(zhì)孔隙類(lèi)型主要包括長(zhǎng)石和碳酸鹽礦物粒內(nèi)溶孔、粒間溶孔和黏土礦物層間孔,其中頁(yè)巖孔隙中65%為溶蝕孔,20%為黏土礦物層間孔,其余為有機(jī)孔、微裂縫和殘余粒間孔;頁(yè)巖中黏土礦物含量最高;頁(yè)巖中溶蝕孔的比例隨有機(jī)質(zhì)成熟度升高而增大。有機(jī)質(zhì)熱演化過(guò)程中產(chǎn)生的有機(jī)酸促進(jìn)了基質(zhì)孔隙發(fā)育,脆性礦物和膠結(jié)物充填了基質(zhì)孔隙不利于孔隙發(fā)育,黏土礦物含量越高基質(zhì)孔隙發(fā)育程度越低。
[Abstract]:In order to investigate the influencing factors on the development of shale matrix pore in the South Minister 7 continental reservoir in Ordos Basin, argon ion polishing and scanning electron microscope (SEM) X-ray diffraction spectrometer, organic carbon measurement and organic matter maturity measurement were used.High pressure mercury injection and Image J image processing are systematically studied.The results show that the matrix pore types of Chang 7 continental shale are mainly composed of dissolution pores in feldspar and carbonate minerals, intergranular dissolution pores and interlaminar pores of clay minerals, in which 65% of the pores in shale are corrosion pores and 20% are interlayer pores of clay minerals.The others are organic pores, microfractures and residual intergranular pores, the clay content in shale is the highest, and the proportion of dissolved pores in shale increases with the maturity of organic matter.Organic acids produced during the thermal evolution of organic matter promote the development of matrix pores, brittle minerals and cemented matrix pores are not conducive to pore development, and the higher the clay content is, the lower the development degree of matrix pores is.
【作者單位】： 西安石油大學(xué)石油工程學(xué)院;西安石油大學(xué)陜西省油氣田特種增產(chǎn)技術(shù)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金面上項(xiàng)目“頁(yè)巖氣藏水平井液態(tài)氣動(dòng)力壓裂增產(chǎn)新方法研究”(51374170) 陜西省工業(yè)科技攻關(guān)項(xiàng)目“頁(yè)巖氣壓裂儲(chǔ)層多尺度孔隙氣體賦存及流動(dòng)規(guī)律研究”(2015GY109) 陜西省教育廳重點(diǎn)實(shí)驗(yàn)室科研計(jì)劃基金資助項(xiàng)目(15JS086)
【分類(lèi)號(hào)】：P618.13

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