本文選題：四川盆地 + 元壩地區(qū)��； 參考：《現(xiàn)代地質(zhì)》2017年01期

【摘要】：四川盆地下侏羅統(tǒng)自流井組大安寨段一亞段(大一亞段)灰?guī)r是元壩地區(qū)主要產(chǎn)氣層。巖心、薄片、物性資料、試油、錄井、測井、地震資料綜合研究表明,大一亞段灰?guī)r主要為介殼灰?guī)r和含泥介殼灰?guī)r,介殼灰?guī)r平均孔隙度2.36%,平均滲透率為0.02×10~(-3)μm~2,含泥介殼灰?guī)r平均孔隙度為4.59%,平均滲透率為0.21×10~(-3)μm~2。介殼灰?guī)r為淺湖亞相高能灘微相沉積,含泥介殼灰?guī)r為淺湖亞相次高能灘微相沉積。地震波形分類上,以介殼灰?guī)r為主的高能灘微相為高連續(xù)低頻中強(qiáng)波谷反射,以含泥介殼灰?guī)r為主的次高能灘微相為高連續(xù)低頻中弱振幅波谷反射。高連續(xù)低頻中強(qiáng)振幅波谷反射和高連續(xù)低頻中弱振幅波谷反射以SW-NE向分布于研究區(qū)中央地帶。以伽馬值大于46 API為門檻值剔除泥巖、泥質(zhì)粉砂巖等,得到介殼灰?guī)r和含泥介殼灰?guī)r的伽馬數(shù)據(jù)體。精細(xì)刻畫了高能灘微相介殼灰?guī)r和次高能灘微相含泥介殼灰?guī)r的分布范圍,新增天然氣有利區(qū)面積518 km~2,為元壩地區(qū)大安寨段天然氣儲量和產(chǎn)量的增加奠定了堅(jiān)實(shí)的基礎(chǔ)。
[Abstract]:The limestone of the first member of the Da'anzhai member of the Lower Jurassic Ziliujing formation in Sichuan Basin is the main gas producing zone in Yuanba area. The comprehensive study of core, thin slice, physical property data, oil test, logging, logging and seismic data shows that the limestone of the first member is mainly composed of meso-shell limestone and mud-bearing meso-shell limestone. The average porosity is 2.36, the average permeability is 0.02 脳 10 ~ (-3) 渭 m ~ (-2), the average porosity is 4.59 and the average permeability is 0.21 脳 10 ~ (-3) 渭 m ~ (-2). The mesoclase limestone is a shallow lacustrine subfacies high-energy beach microfacies deposit, while the mud-bearing shell limestone is a shallow lacustrine subfacies sub-high-energy beach microfacies deposit. In the classification of seismic waveforms, the high-energy beach microfacies mainly composed of meso-shell limestone is high continuous low-frequency medium-strong wave valley reflection, and the secondary high-energy beach microfacies dominated by mud-bearing meso-shell limestone is high continuous low-frequency medium-weak amplitude wave trough reflection. High continuous low frequency medium and strong amplitude trough reflection and high continuous low frequency medium and weak amplitude trough reflection are distributed in SW-NE direction in the central area of the study area. Taking gamma value greater than 46 API as the threshold value to exclude mudstone, argillaceous siltstone and so on, the gamma-ray data bodies of meso-shell limestone and mud-bearing meso-shell limestone are obtained. The distribution range of high-energy beach microfacies meso-limestone and sub-high-energy beach microfacies mud-bearing shell limestone is described in detail, and the area of natural gas favorable zone is 518 km2, which lays a solid foundation for the increase of natural gas reserves and production in Da'anzhai section of Yuanba area.
【作者單位】： 中國石化勘探分公司;
【基金】：國家科技重大專項(xiàng)“碎屑巖層系大中型油氣田富集規(guī)律與勘探關(guān)鍵技術(shù)”(2011ZX05002-004)
【分類號】：P618.13;P534.52

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 黃棋h，

本文編號：2057975