發(fā)布時(shí)間：2018-03-19 21:33

  本文選題：火山巖氣藏　切入點(diǎn)：有效儲(chǔ)層　出處：《天然氣地球科學(xué)》2017年03期 　論文類型：期刊論文

【摘要】：依據(jù)80口鉆井1 045m巖心描述,820件薄片鑒定和全直徑巖心物性分析,以及220件壓汞測(cè)試結(jié)果,結(jié)合試氣產(chǎn)能資料,對(duì)松遼盆地北部徐家圍子斷陷白堊系營城組火山巖氣藏有效儲(chǔ)層特征及成因進(jìn)行研究。結(jié)果表明:有效儲(chǔ)層主要分布于流紋質(zhì)熔結(jié)凝灰?guī)r、流紋巖、粗面巖和玄武巖4類優(yōu)勢(shì)巖性,殘余的原生氣孔和粒間孔、石泡孔、溶蝕孔以及冷凝收縮縫5類有效孔隙貢獻(xiàn)最大,孔隙結(jié)構(gòu)具有大孔隙—細(xì)喉道的構(gòu)成特點(diǎn),喉道半徑以微米級(jí)至納米級(jí)為主。與非有效儲(chǔ)層相比,火山巖有效儲(chǔ)層發(fā)育相對(duì)粗大的喉道,具備低排驅(qū)壓力和高進(jìn)汞飽和度�；|(zhì)孔隙和喉道對(duì)火山巖有效儲(chǔ)層的滲透性能起控制作用,揮發(fā)份逸出作用和溶解作用是火山巖有效儲(chǔ)層形成的關(guān)鍵因素。通過有效孔隙成因分析認(rèn)為,流紋巖有效儲(chǔ)層為原生孔隙型,玄武巖和粗面巖有效儲(chǔ)層為原生孔隙充填殘余—次生溶蝕改善型,流紋質(zhì)熔結(jié)凝灰?guī)r有效儲(chǔ)層為原生孔隙壓實(shí)殘余—次生溶蝕改善型。
[Abstract]:According to the 1045m core description of 80 drilling wells, 820 thin pieces were identified and the physical properties of the whole diameter cores were analyzed, and 220 mercury injection test results were used to combine the gas test productivity data. The effective reservoir characteristics and genesis of volcanic reservoir in Yingcheng formation of Cretaceous system in Xujiaweizi fault depression in the north of Songliao Basin are studied. The results show that the effective reservoir is mainly distributed in fluvial melt tuff and rhyolite. Four types of dominant lithology, residual primary porosity and intergranular pore, stone bubble pore, dissolved pore and condensed shrinkage joint, contribute most to the four types of dominant lithology, and the pore structure is characterized by macroporosity and fine throat. The throat radius is mainly from micron to nanoscale. Compared with the non-effective reservoir, the effective volcanic reservoir develops relatively large throat. With low displacement pressure and high mercury saturation. Matrix pores and throat play a role in controlling the permeability of effective volcanic reservoirs, Volatilization and dissolution are the key factors in the formation of effective volcanic reservoir. Through the analysis of effective pore genesis, it is concluded that the effective reservoir of rhyolite is of primary pore type. The effective reservoirs of basalt and trachyte are primary pore filling residual and secondary dissolution improvement type, and the effective reservoir of fluid-melt tuff is primary pore compaction residual secondary solution improvement type.
【作者單位】： 吉林大學(xué)地球科學(xué)學(xué)院;大慶油田勘探開發(fā)研究院;吉林大學(xué)古生物學(xué)與地層學(xué)研究中心;
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃“973”項(xiàng)目(編號(hào):2012CB822002) 國家自然科學(xué)基金項(xiàng)目(編號(hào):41472304)聯(lián)合資助
【分類號(hào)】：P618.13

【參考文獻(xiàn)】

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