本文選題：遼河油田 + 致密砂巖　； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：隨著石油勘探開發(fā)程度的逐漸加深,致密砂巖氣藏的經(jīng)濟價值逐漸被人們所認識,其勘探開發(fā)已經(jīng)成為國內(nèi)外石油工業(yè)的研究熱點和前沿問題。但復(fù)雜的成因以及裂縫的發(fā)育等,使得致密砂巖儲層具有巖性致密、低孔隙度、低滲透率、儲層非均質(zhì)性強和氣水關(guān)系復(fù)雜等特點,這給致密砂巖儲層測井解釋評價研究增加了難度。本文首先在分析了取心、試油投產(chǎn)等第一手資料的基礎(chǔ)上,開展油氣層巖性、含油性、物性以及電性研究,建立油氣層測井定性識別及定量識別標準,并通過通過沙一二和沙三深層致密砂巖儲層測井評價的比較,找出二者在測井評價上區(qū)別及難點,之后在巖心分析的基礎(chǔ)上,進行了雙側(cè)向測井曲線以及氣層時差的校正,進而建立了包括泥質(zhì)含量、孔隙度、滲透率、粒度中值及飽和度等儲層參數(shù)在內(nèi)的測井解釋模型,并對模型做出了校正。通過四性研究發(fā)現(xiàn),沙三段與沙一二相比,在沉積、巖性、含油性、物性及電性特征上均存在較大的差別,加上儲層特征具有鮮明的獨特性,致使應(yīng)用常規(guī)的測井評價方法來評價目的層難度較大,甚至無法進行,為此,在本文中引進了儲層品質(zhì)指數(shù)及裂縫孔隙度,并結(jié)合陣列感應(yīng)、核磁和陣列聲波等測井新技術(shù)來對沙三致密儲層的儲集性能、含油氣情況等進行評價。最終,結(jié)合工區(qū)油藏綜合地質(zhì)特征研究以及本問所建立建立的油氣層識別標準和儲層參數(shù)解釋模型的基礎(chǔ)上,開展測井二次精細處理解釋,研究工區(qū)內(nèi)油氣水分布規(guī)律。應(yīng)用本文所提出的方法,首先對研究區(qū)重點井進行了二次評價,對9口井解釋結(jié)論重新進行了修改,修改結(jié)論共71層,之后通過對區(qū)域重點井的分析及井間地層對比,發(fā)現(xiàn)坡折帶不利于尋找致密氣藏,洼陷區(qū)致密砂巖氣在沙三中部普遍存在,在沙三上部構(gòu)造有利部位存在,在沙三下部少見。洼陷區(qū)的沙三中下部儲層由于儲層處于沙一、二段、沙三段和沙四段成熟生油巖的包圍之中,成藏條件優(yōu)越,但是沙三中下部儲層儲集性能極差,先天儲集條件不足,因此含氣豐度不高,產(chǎn)量很低。
[Abstract]:With the deepening of petroleum exploration and development, the economic value of tight sandstone gas reservoir has been gradually recognized, and its exploration and development has become a hot spot and a frontier issue in petroleum industry at home and abroad. However, due to the complex genesis and the development of fractures, the tight sandstone reservoir has the characteristics of tight lithology, low porosity, low permeability, strong heterogeneity of reservoir and complex relationship between gas and water. This makes it more difficult to study the log interpretation and evaluation of tight sandstone reservoir. In this paper, based on the analysis of the first data of coring and production testing, the lithology, oil-bearing, physical and electrical properties of oil and gas reservoir are studied, and the criteria for qualitative identification and quantitative identification of oil and gas reservoir logging are established. Based on the comparison of logging evaluation between sand 1 2 and 3 deep tight sandstone reservoir, the differences and difficulties in logging evaluation between them are found out. Based on core analysis, dual lateral log curves and gas interval time difference are corrected. A logging interpretation model including shale content, porosity, permeability, grain size median and saturation is established, and the model is corrected. Through the study of four properties, it is found that there are great differences in sedimentary, lithologic, oil-bearing, physical and electrical characteristics of the third member of the formation, compared with the first and second member of the formation, and the distinct unique characteristics of the reservoir. As a result, it is very difficult to evaluate the target layer by using the conventional logging evaluation method. Therefore, the reservoir quality index and fracture porosity are introduced in this paper, and combined with array induction, the reservoir quality index and fracture porosity are introduced in this paper. New logging techniques, such as nuclear magnetic field and array acoustic wave, are used to evaluate the reservoir performance, oil and gas content of the sand 3 tight reservoir. Finally, based on the study of the comprehensive geological characteristics of the reservoir in the working area and the oil and gas reservoir identification standard and the reservoir parameter interpretation model established by this paper, the secondary fine processing interpretation of logging is carried out to study the distribution of oil, gas and water in the working area. Using the method proposed in this paper, the second evaluation of the key wells in the study area is first carried out, and the interpretation conclusions of 9 wells are revised again, with a total of 71 layers. Then, through the analysis of the regional key wells and the cross-well formation correlation, It is found that the slope break zone is not conducive to finding the tight gas reservoirs. The tight sandstone gas exists generally in the middle of Sha 3 and in the favorable part of the upper structure in the sag area, but it is rare in the lower part of the third part of the sand. The reservoirs in the middle and lower part of Sha 3 in the sag area are surrounded by the mature source rocks of the first, second, third and fourth member of Shahejie formation, so the reservoir forming conditions are superior, but the reservoir performance of the middle and lower part of the reservoir is extremely poor, and the congenital reservoir conditions are insufficient. Therefore, the gas abundance is not high, the output is very low.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13;P631.81

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