本文關(guān)鍵詞： 物性界限 成藏特征 油藏類型 非達(dá)西滲流 致密砂巖 鄂爾多斯盆地　出處：《西安石油大學(xué)學(xué)報(自然科學(xué)版)》2017年04期 　論文類型：期刊論文

【摘要】：對于致密油藏與常規(guī)油藏物性界限的判定以往主要基于對典型致密油盆地的大量實測物性統(tǒng)計資料,缺少理論的依據(jù)。以鄂爾多斯盆地延長組長7致密油為例,從致密油藏、常規(guī)油藏成藏機理與成藏特征出發(fā),通過石油質(zhì)點受力狀態(tài)分析、流體滲流特征的物理模擬實驗及現(xiàn)今致密和常規(guī)油藏油水分布特征,探討儲層致密上限參數(shù)�；诟×兔茏枇ο嗟葧r的力學(xué)平衡法、真實砂巖石油充注物理模擬實驗、現(xiàn)今致密油與常規(guī)油藏物性分布特征及高壓壓汞排驅(qū)壓力與儲層物性關(guān)系等4種方法相互印證,確定的儲層致密上限參數(shù)基本一致,綜合得出儲層致密上限滲透率約1×10~(-3)μm~2,對應(yīng)孔隙度上限約12%。
[Abstract]:In the past, the boundary of physical properties between compact reservoir and conventional reservoir was mainly based on a large number of measured physical property statistics of typical tight oil basins, which is lack of theoretical basis. Taking Yanchang 7 dense oil in Ordos Basin as an example, this paper takes the dense reservoir as an example. Based on the reservoir forming mechanism and characteristics of conventional reservoirs, the physical simulation experiments of fluid percolation characteristics and the oil-water distribution characteristics of present dense and conventional reservoirs are carried out through the analysis of the stress state of petroleum particles. Based on the mechanical balance method when the buoyancy and capillary resistance are equal, the physical simulation experiment of the true sandstone oil filling is carried out. The distribution characteristics of physical properties of compact oil and conventional reservoirs, and the relationship between the pressure of high-pressure mercury displacement and the physical properties of reservoirs are confirmed by four methods, and the upper limit parameters of reservoir density are basically the same. The tight upper permeability of the reservoir is about 1 脳 10 ~ (-3) 渭 m ~ (-2), corresponding to the upper porosity of about 12.
【作者單位】： 西安石油大學(xué)地球科學(xué)與工程學(xué)院;西安石油大學(xué)陜西省油氣成藏地質(zhì)學(xué)重點實驗室;中國石油長慶油田分公司第三采氣廠;
【基金】：陜西省教育廳專項科研計劃項目(編號:15JK1559) 陜西省自然科學(xué)基礎(chǔ)研究計劃項目(編號:2017JM4014;編號:2013JM5007)
【分類號】：P618.13
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本文編號：1539114