【摘要】：為了明確長7致密油儲(chǔ)層特征對其開展綜合評價(jià)。首先,通過巖心觀察、薄片鑒定和巖心分析等,認(rèn)為長7致密油儲(chǔ)層物性、含油性、脆性等屬性參數(shù)具有分布頻帶寬、變化快的特征。其次,基于聚類分析方法,選取7個(gè)相對獨(dú)立的參數(shù)用于儲(chǔ)層分級評價(jià),并界定了相應(yīng)參數(shù)的分級標(biāo)準(zhǔn)。在此基礎(chǔ)上,運(yùn)用灰色系統(tǒng)理論,定量各評價(jià)參數(shù)的權(quán)系數(shù),計(jì)算出儲(chǔ)層綜合評價(jià)因子,對鎮(zhèn)北地區(qū)西233井區(qū)長721致密油儲(chǔ)層開展綜合定量評價(jià)。結(jié)果表明:西233井區(qū)以Ⅱ、Ⅲ類儲(chǔ)層為主,兩者分布面積約為65%,其中Ⅰ類、Ⅱ類儲(chǔ)層主要分布于三角洲前緣水下分流河道,Ⅲ、Ⅳ類儲(chǔ)層分布于河道砂體側(cè)翼。
[Abstract]:In order to make clear the characteristics of Chang7 tight oil reservoir, comprehensive evaluation was carried out. Firstly, through core observation, thin section identification and core analysis, it is considered that the physical properties, oil content and brittleness of Chang7 tight oil reservoir have the characteristics of distributed frequency bandwidth and fast change. Secondly, based on the clustering analysis method, seven relatively independent parameters are selected for reservoir classification evaluation, and the classification criteria of the corresponding parameters are defined. On this basis, the comprehensive evaluation factors of reservoir are calculated by using the grey system theory and the weight coefficients of each evaluation parameter, and the comprehensive quantitative evaluation of Chang721 tight oil reservoir in the west 233 well in the north of Zhenbei area is carried out. The results show that the type 鈪，

本文編號：2219829