發(fā)布時(shí)間：2018-05-13 10:21

  本文選題：四川盆地南部 + 須家河組　； 參考：《地質(zhì)科技情報(bào)》2017年02期

【摘要】：上三疊統(tǒng)須家河組二段是四川盆地南部主要的勘探層位之一。對(duì)川南須二段儲(chǔ)集砂巖進(jìn)行的鑄體薄片觀察、物性資料研究表明,須二段儲(chǔ)集巖石類型主要為長(zhǎng)石巖屑砂巖、巖屑長(zhǎng)石砂巖和巖屑砂巖,先后經(jīng)歷了壓實(shí)作用、膠結(jié)作用、溶蝕作用、破裂作用和交代作用等成巖作用。在計(jì)算區(qū)內(nèi)須二段儲(chǔ)集巖石壓實(shí)系數(shù)、膠結(jié)系數(shù)和溶蝕系數(shù)等成巖系數(shù)的基礎(chǔ)上,結(jié)合Q型聚類分析方法對(duì)儲(chǔ)集巖石的各成巖系數(shù)進(jìn)行了變量因子的歸類,劃分出強(qiáng)壓實(shí)強(qiáng)膠結(jié)相、強(qiáng)壓實(shí)中膠結(jié)相、強(qiáng)壓實(shí)弱膠結(jié)相、中壓實(shí)弱膠結(jié)相及弱壓實(shí)弱膠結(jié)相。成巖相的分布明顯受到沉積相展布的影響,儲(chǔ)層質(zhì)量較好的成巖相主要發(fā)育于三角洲前緣亞相的水下分流河道等高能環(huán)境中,同時(shí)成巖相的分布還受到填隙物、塑性巖屑的控制。
[Abstract]:The member of Xujiahe formation of Upper Triassic is one of the main exploration strata in the south of Sichuan Basin. The thin section observation of the reservoir sandstone of Xuer member in south Sichuan shows that the reservoir rock types of the reservoir are mainly feldspathic sandstone, lithic feldspathic sandstone and lithic sandstone, which have experienced compaction and cementation successively, and the results show that the reservoir rock types of the reservoir are feldspathic sandstone, lithic feldspathic sandstone and lithic sandstone. Diagenesis, such as dissolution, rupture and metasomatism. On the basis of the diagenesis coefficients such as compaction coefficient, cementation coefficient and dissolution coefficient of reservoir rock in the second member reservoir in the calculated area, the variable factors of diagenesis coefficient of reservoir rock are classified with the method of Q-type cluster analysis. The strong cemented phase, the cemented phase in the strong compaction, the weak cementation phase in the middle compaction and the weak cementation phase in the weak compaction are divided. The distribution of diagenetic facies is obviously affected by the distribution of sedimentary facies. The diagenetic facies with good reservoir quality are mainly developed in high-energy environments such as underwater distributary channel of delta front facies, and the distribution of diagenetic facies is also affected by interstitial material. Control of plastic cuttings.
【作者單位】： 成都理工大學(xué)油氣藏地質(zhì)及開(kāi)發(fā)工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;成都理工大學(xué)沉積地質(zhì)研究院;
【基金】：國(guó)家科技重大專項(xiàng)(2011ZX05002-004-006HZ;2016ZX05002-004-010)
【分類號(hào)】：P618.13

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