【摘要】：隨著油氣田勘探開(kāi)發(fā)的逐步推進(jìn),各類型的復(fù)雜油氣藏變成了現(xiàn)今的主要勘探目標(biāo),低孔低滲油藏是復(fù)雜油氣藏的一種,具有很大的開(kāi)發(fā)潛力。本次研究的目標(biāo)區(qū)張強(qiáng)凹陷北部地區(qū)屬于中-低孔隙、低或特低滲儲(chǔ)層,斷塊較多,構(gòu)造復(fù)雜,儲(chǔ)層條件較差,非均質(zhì)性較強(qiáng)。研究區(qū)內(nèi)老井較多,受到當(dāng)時(shí)測(cè)井工藝及解釋方法的限制,測(cè)井項(xiàng)目較少,資料相對(duì)較匱乏,流體識(shí)別及油水層解釋精度不高。針對(duì)上述情況,本次研究通過(guò)對(duì)巖心資料進(jìn)行分析,結(jié)合測(cè)井曲線,利用交會(huì)圖技術(shù)及經(jīng)驗(yàn)公式分別建立了沙海組、九佛堂組及義縣組的測(cè)井解釋模型,并進(jìn)行了巖性識(shí)別及歸類,給出了相應(yīng)的巖性劃分標(biāo)準(zhǔn)。根據(jù)解釋模型計(jì)算出的孔隙度、滲透率、飽和度確定了儲(chǔ)層的物性及含油性,同時(shí)利用測(cè)井曲線結(jié)合錄井及試采資料建立了工區(qū)電性解釋標(biāo)準(zhǔn),依據(jù)該解釋標(biāo)準(zhǔn)主要對(duì)沙海組上段、下段及義縣組儲(chǔ)層進(jìn)行了二次精細(xì)解釋,共計(jì)完成62口井的評(píng)價(jià)工作,累計(jì)解釋層數(shù)為181層,累計(jì)厚度達(dá)960.3m。通過(guò)區(qū)域井間地層對(duì)比,進(jìn)行了張強(qiáng)凹陷北部地區(qū)的油水分布規(guī)律研究,結(jié)果表明:九佛堂組地層缺失嚴(yán)重,油層主要發(fā)育在構(gòu)造高部位的義縣組及構(gòu)造低部位的沙海組。根據(jù)目前的勘探開(kāi)發(fā)情況,作了研究區(qū)內(nèi)的潛力層分析,對(duì)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(chǔ)上產(chǎn)提供依據(jù)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(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：P618.13;P631.81

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