【摘要】：隨著油氣田勘探開發(fā)的逐步推進,各類型的復雜油氣藏變成了現(xiàn)今的主要勘探目標,低孔低滲油藏是復雜油氣藏的一種,具有很大的開發(fā)潛力。本次研究的目標區(qū)張強凹陷北部地區(qū)屬于中-低孔隙、低或特低滲儲層,斷塊較多,構造復雜,儲層條件較差,非均質性較強。研究區(qū)內老井較多,受到當時測井工藝及解釋方法的限制,測井項目較少,資料相對較匱乏,流體識別及油水層解釋精度不高。針對上述情況,本次研究通過對巖心資料進行分析,結合測井曲線,利用交會圖技術及經驗公式分別建立了沙海組、九佛堂組及義縣組的測井解釋模型,并進行了巖性識別及歸類,給出了相應的巖性劃分標準。根據解釋模型計算出的孔隙度、滲透率、飽和度確定了儲層的物性及含油性,同時利用測井曲線結合錄井及試采資料建立了工區(qū)電性解釋標準,依據該解釋標準主要對沙海組上段、下段及義縣組儲層進行了二次精細解釋,共計完成62口井的評價工作,累計解釋層數(shù)為181層,累計厚度達960.3m。通過區(qū)域井間地層對比,進行了張強凹陷北部地區(qū)的油水分布規(guī)律研究,結果表明:九佛堂組地層缺失嚴重,油層主要發(fā)育在構造高部位的義縣組及構造低部位的沙海組。根據目前的勘探開發(fā)情況,作了研究區(qū)內的潛力層分析,對潛力較大的義縣組提出5口井試油建議,若試油成功,將至少增加油層厚度376m,將為油田增儲上產提供依據和保障。
[Abstract]:With the development of exploration and development of oil and gas fields, various types of complex reservoirs have become the main exploration targets. Low porosity and low permeability reservoirs are one of the complex reservoirs with great potential for development. The northern area of Zhang Qiang depression in this research area belongs to medium-low porosity low or ultra-low permeability reservoirs with more fault blocks complex structures poor reservoir conditions and strong heterogeneity. There are many old wells in the study area, which are limited by the logging techniques and interpretation methods at that time. The logging items are less, the data are relatively scarce, and the accuracy of fluid identification and oil-water reservoir interpretation is not high. In view of the above situation, the logging interpretation models of Si formation, Jiufutang formation and Yixian formation were established by analyzing the core data and combining well logging curves with cross plot technique and empirical formula. Lithology identification and classification are carried out, and the corresponding lithologic classification standards are given. According to the porosity, permeability and saturation calculated by the interpretation model, the physical properties and oil-bearing properties of the reservoir are determined. At the same time, the electrical interpretation standard of the working area is established by combining the logging curve with the logging and production test data. According to this interpretation criterion, the reservoir in the upper, lower and Yixian formation of Si formation was mainly interpreted for two fine times, and 62 wells were evaluated. The accumulative interpretation layer was 181 layers and the cumulative thickness was 960.3 m. Based on the regional cross-well stratigraphic correlation, the oil and water distribution in the northern part of Zhang Qiang depression is studied. The results show that the formation of Jiufutang formation is seriously missing, and the reservoir is mainly developed in Yixian formation of high structural position and Si formation in low part of structure. According to the present situation of exploration and development, this paper makes an analysis of potential layers in the study area, and puts forward five well test suggestions for Yixian formation with great potentiality.If the oil testing is successful, the thickness of the reservoir will be increased at least 376m, which will provide the basis and guarantee for the increase of reservoir and production in the oil field.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：P618.13;P631.81

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