【摘要】：齊家北地區(qū)高臺子油層為高含鈣致密儲層,鈣質(zhì)發(fā)育導致部分水層的電阻率大幅提高,高阻水層、油水同層、油層在電測曲線上具有相同的電性特征,給以電測特征為解釋基礎的油層、油水同層的判別帶來極大的困難.針對上述解釋技術難題,本文在儲層"四性"關系研究的基礎上,提出了剝層法:其核心思想是根據(jù)各流體類型儲層典型的電性特征,將干層、水層、油水同層從其他儲層中逐一剝離出來.即依據(jù)干層的電性特征,首先將干層與產(chǎn)層區(qū)分開;再利用水層識別圖版,將水層特別是鈣質(zhì)水層與油水同層區(qū)分開;最后利用油層與油水同層解釋圖版,再將油層與油水同層區(qū)分開來.該方法盡可能地降低干層、水層特別是鈣質(zhì)水層對油水同層和油層解釋的干擾,提高測井解釋符合精度.研究表明:感應測井曲線可反映致密砂巖孔隙中低阻可動水含量,是鈣質(zhì)水層、油水同層解釋的敏感曲線;多曲線聯(lián)合定性識別方法與解釋圖版相結合可提高油水層測井解釋符合率;所建立的測井解釋圖版精度均達到了90%以上,經(jīng)過3口實際試油井進行的背對背驗證,油層的測井解釋符合率達到了100%.
[Abstract]:The Gao Taizi oil reservoir in Qijia north area is a high calcium containing dense reservoir, which leads to a large increase in the resistivity of the part of the water layer, the high resistivity water layer, the oil water and the same layer. The oil layer has the same electrical characteristics on the electrical measurement curve. On the basis of the study of the "four nature" relationship of the reservoir, this paper puts forward the stripping method: the core idea is to peel off the dry layer, water layer and oil and water layer one by one according to the typical electrical characteristics of each type of fluid reservoir. The water layer, especially the calcareous water layer, is separated from the same layer of oil and water. Finally, the plate is explained with the same layer of oil and water, and then the oil and water are distinguished from the same layer. This method reduces the dry layer as much as possible, and the water layer especially the calcareous water layer can interfere with the explanation of the oil and water same layer and the oil layer, and improve the accuracy of the logging interpretation. The curve can reflect the content of low resistance movable water in the pores of tight sandstone, the sensitive curve of the calcareous water layer and the oil and water layer interpretation, and the combination of the multi curve qualitative identification method and the interpretation chart can improve the coincidence rate of the logging interpretation of the oil-water layer. The accuracy of the log interpretation chart is above 90% and has been carried out through 3 actual test wells. Back to back verification, oil well logging interpretation coincidence rate reached 100%.
【作者單位】： 東北石油大學地球科學學院;黑龍江省油氣藏形成機理與資源評價重點實驗室;大慶油田有限責任公司第八采油廠;大慶油田有限責任公司第九采油廠;
【基金】：2016年國家級大學生創(chuàng)新創(chuàng)業(yè)訓練計劃項目(201610220009)資助
【分類號】：P618.13

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