發(fā)布時間：2018-02-25 05:26

  本文關(guān)鍵詞： 孔隙演化 成巖序列 成巖階段 八道灣組 車排子地區(qū) 準(zhǔn)噶爾盆地　出處：《東北石油大學(xué)學(xué)報(bào)》2017年01期 　論文類型：期刊論文

【摘要】：準(zhǔn)噶爾盆地車排子地區(qū)八道灣組油氣勘探取得重大突破,但該地區(qū)成巖作用方面的研究還比較薄弱。根據(jù)巖石薄片及掃描電鏡觀察,確定車排子地區(qū)成巖作用類型及成巖事件發(fā)生順序;根據(jù)陰極發(fā)光測試,確定方解石膠結(jié)物期次、石英次生加大發(fā)育程度及高嶺石分布特征;根據(jù)X線衍射,確定黏土礦物組成及各礦物成分體積分?jǐn)?shù);根據(jù)氧同位素測試,確定自生方解石形成溫度;采用反演回剝法研究儲層孔隙演化過程。結(jié)果表明:儲層主要經(jīng)歷壓實(shí)作用,方解石、石英、黃鐵礦等的膠結(jié)作用及長石和石英的溶蝕作用。方解石膠結(jié)物形成溫度主要介于40~85℃,大致對應(yīng)早成巖階段A期的晚期至早成巖階段B期;黏土礦物以高嶺石為主,主要來源于長石的溶蝕;儲層孔隙演化過程可以劃分為3個階段,即快速壓實(shí)階段、壓實(shí)膠結(jié)階段及壓實(shí)溶蝕階段。該研究成果為車排子地區(qū)八道灣組地層油氣勘探提供地質(zhì)依據(jù)。
[Abstract]:Major breakthrough has been made in oil and gas exploration of Badaowan formation in Chepaizi area, Junggar Basin, but the study on diagenesis in this area is relatively weak. The diagenesis types and diagenetic events in Chepeizi area are determined. According to the cathodoluminescence test, the calcite cementation period, the secondary growth of quartz and the distribution characteristics of kaolinite are determined. The mineral composition of clay and the volume fraction of each mineral component were determined; the formation temperature of authigenic calcite was determined according to oxygen isotope test; the pore evolution process of reservoir was studied by inverse stripping method. The results showed that the reservoir mainly experienced compaction. The cementation of calcite, quartz, pyrite, etc., and the dissolution of feldspar and quartz. The formation temperature of calcite cementation is mainly between 40 鈩，

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