本文選題：四川盆地中部 + 熱液白云巖儲(chǔ)集相��； 參考：《天然氣工業(yè)》2017年03期

【摘要】：四川盆地中部(簡(jiǎn)稱川中地區(qū))上震旦統(tǒng)燈影組是近幾年該盆地天然氣勘探的重點(diǎn)目標(biāo)之一,尤其是表生巖溶作用及其所形成的儲(chǔ)滲空間一直是相關(guān)研究的重點(diǎn)。為此,以巖心、巖屑樣品的巖石學(xué)特征研究為基礎(chǔ),結(jié)合相關(guān)微量元素、同位素和陰極發(fā)光等實(shí)驗(yàn)分析結(jié)果,證實(shí)燈影組白云巖中發(fā)育有基質(zhì)重結(jié)晶白云巖、充填狀鞍狀白云石(包裹體均一化溫度平均值為178.5℃、高Fe、Mn含量、~(87)Sr/~(86)Sr值偏高)和熱液礦物組合(包括閃鋅礦、方鉛礦、黃鐵礦、石英等)。進(jìn)而提出該區(qū)燈影組白云巖中存在熱液白云巖儲(chǔ)集相的認(rèn)識(shí),即指由熱液流體對(duì)致密基質(zhì)白云巖改造而形成的由熱液溶蝕孔隙、熱液成因晶間孔、熱液溶洞、熱液擴(kuò)溶縫4種儲(chǔ)集空間構(gòu)成的白云巖儲(chǔ)集體。為有效地認(rèn)識(shí)和鑒別燈影組熱液白云巖儲(chǔ)集相,從巖相學(xué)和地球化學(xué)兩方面建立了鑒別標(biāo)志。結(jié)論認(rèn)為,該區(qū)熱液白云巖儲(chǔ)集相發(fā)育的控制因素為:(1)深大基底斷裂作用;(2)熱液作用強(qiáng)度。
[Abstract]:The Dengying formation of the Upper Sinian in the central part of Sichuan Basin is one of the key targets of natural gas exploration in this basin in recent years, especially the supergene karstification and its reservoir and seepage space. Therefore, based on the petrological characteristics of core and cuttings, combined with the experimental results of trace elements, isotopes and cathodoluminescence, it is proved that the matrix recrystallized dolomite is developed in the dolomite of the Dengying formation. The packed saddle dolomite (the average temperature of homogenization of inclusions is 178.5 鈩，

本文編號(hào)：1830526