本文選題：鄂爾多斯盆地 + 巖心裂縫�。� 參考：《地質(zhì)科技情報》2017年03期

【摘要】：裂縫對鄂爾多斯盆地低滲透儲層至關(guān)重要。為研究該盆地巖心裂縫展布,在古地磁巖心定向以及筆者曾提出的古地磁巖心裂縫重定向的基礎(chǔ)上,以鄂爾多斯盆地東南部某油田延長組的巖心為研究對象,對采集的樣品采用2種不同的加工方式,建立樣品坐標(biāo)系和反向樣品坐標(biāo)系,采用古地磁方法分別對其進行重定向。最終推導(dǎo)出各自測試結(jié)果所表達的裂縫方向的公式,得到鄂爾多斯盆地東南部某油田6口井延長組巖心裂縫的方位,并對比驗證了其計算結(jié)果,均比較可靠。研究表明對于類似鄂爾多斯盆地的裂縫系統(tǒng),運用古地磁方法對2個相對坐標(biāo)系加工的標(biāo)樣進行裂縫重定向是可靠的,且精度較高,可為同類盆地裂縫研究提供參考。
[Abstract]:Fracture is very important to low permeability reservoir in Ordos Basin.In order to study the distribution of core fractures in this basin, on the basis of paleomagnetic core orientation and paleomagnetic core fracture reorientation proposed by the author, the core of Yanchang formation in an oil field in the southeast of Ordos Basin is taken as the research object.The sample coordinate system and the reverse sample coordinate system were established by two different processing methods. The paleomagnetic method was used to redirect the samples.Finally, the formula of fracture direction expressed by each test result is deduced, and the orientation of Yanchang core fracture of 6 wells in an oil field in the southeast of Ordos Basin is obtained, and the calculated results are compared and verified, all of which are relatively reliable.The study shows that the paleomagnetic method is reliable and accurate for the fracture reorientation of two standard samples processed in relative coordinate system for the fracture system similar to Ordos basin, which can be used as a reference for the study of fractures in the similar basins.
【作者單位】： 陜西國際商貿(mào)學(xué)院珠寶學(xué)院;西北大學(xué)地質(zhì)學(xué)系;
【基金】：校政重點科研項目(SMXY201606) 陜西省普通高等學(xué)校重點學(xué)科專項(081802)
【分類號】：P618.13
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本文編號：1770788