發(fā)布時間：2018-03-04 11:37

  本文選題：有利區(qū)　切入點(diǎn)：致密油　出處：《石油與天然氣地質(zhì)》2017年03期 　論文類型：期刊論文

【摘要】：雅布賴盆地是我國西部一個侏羅紀(jì)湖相含油氣盆地。為了評價其侏羅系新河組致密油的勘探前景,基于烴源巖、儲集層條件及其配置關(guān)系的分析,采用地質(zhì)要素疊合法優(yōu)選出盆地的致密油有利區(qū),并利用小面元容積法估算了資源潛力。研究表明,雅布賴盆地的優(yōu)質(zhì)烴源巖主要分布在中侏羅統(tǒng)新河組下段,累積厚度大、有機(jī)質(zhì)豐度高、有機(jī)質(zhì)類型好、處于生油的成熟熱演化階段,為致密油主要發(fā)育段;低孔、低滲的致密儲集層主要以薄互層或夾層形式分布在烴源巖層內(nèi),原油具備典型的源內(nèi)自生自儲特征;成熟的富有機(jī)質(zhì)烴源巖與儲集層的大面積直接接觸和巨厚的泥巖封蓋是致密油發(fā)育的重要控制因素。首先,通過烴源巖成熟度確定了小湖次凹為致密油發(fā)育有利部位。然后,綜合測井和錄井油氣顯示成果,依據(jù)烴源巖TOC(有機(jī)碳含量)1%、0.6%Ro(鏡質(zhì)體反射率)1.3%、儲集層(孔隙度≥4%)累計厚度10 m的標(biāo)準(zhǔn),圈定了盆地致密油有利區(qū)主要分布在小湖次凹的中西部。最后,根據(jù)小面元容積法估算有利區(qū)石油地質(zhì)資源量大致為0.92×10~8t,資源豐度平均為34.5×10~4t/km~2。
[Abstract]:Yabrai basin is a Jurassic lacustrine basins in Western China. In order to evaluate the Jurassic New River formation tight oil exploration prospects, based on the analysis of source rock, layer conditions and configuration of the reservoir, the geological factors superimposed selected favorable areas of dense oil basin, and estimates the resource potential using the facet the volumetric method. The results show that the Yabulai basin high quality source rocks are mainly distributed in the Middle Jurassic New River formation in the lower section, accumulated large thickness, high organic matter abundance, organic matter type, maturation stage in oil, tight oil as main development period; low porosity, mainly in the thin layer or layer sandwich are distributed in the form of hydrocarbon source rock in dense reservoir and low permeability, crude oil has the typical source of authigenic reservoir characteristics; organic rich source rocks and reservoirs are mature in direct contact with a large area and thick mudstone cap is tight oil development The main controlling factors. Firstly, the source rock maturity was determined for tight oil development. The lake favorable position. Then, comprehensive logging and logging results, on the basis of source rock TOC (SOC) 1%, 0.6%Ro (vitrinite reflectance) 1.3%, reservoir (porosity is greater than or equal to 4%) the standard thickness of 10 m, the favorable area of tight oil reservoir is mainly distributed in the lake sag in the Midwest. Finally, according to the facet volume method to estimate the favorable areas for petroleum resources was approximately 0.92 * 10~8t, 34.5 * 10~4t/km~2. average resource abundance

【作者單位】： 中國石油大學(xué)(北京)油氣資源與探測國家重點(diǎn)實(shí)驗(yàn)室;中國石油玉門油田公司勘探開發(fā)研究院;
【基金】：中石油股份公司重大科技專項(xiàng)(2012E330) 中國石油第四次油氣資源評價資助項(xiàng)目(2013E-050209)
【分類號】：P618.13
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本文編號：1565485