松遼盆地南部大情字井地區(qū)葡萄花油層地震沉積學(xué)及其應(yīng)用研究
發(fā)布時間：2018-09-14 17:12
【摘要】：大情字井地區(qū)位于松遼盆地南部中央坳陷區(qū)南部,處于長嶺富油凹陷中部。研究區(qū)葡萄花油層地層劃分不精細(xì),井點分布不規(guī)則,砂體具有窄、薄的特征,沉積相研究難度大,沉積特征及砂體展布規(guī)律認(rèn)識不清,嚴(yán)重制約了油田進一步勘探開發(fā)。為此,在研究區(qū)區(qū)域沉積背景的指導(dǎo)下,綜合運用高分辨率層序地層學(xué)原理及地震沉積學(xué)方法對葡萄花油層進行高精度等時地層格架的建立及沉積微相的精細(xì)刻畫。研究區(qū)葡萄花油層沉積復(fù)雜,砂體橫向變化大,井點分布不規(guī)則,等時地層對比難度大。綜合利用巖心、測井、錄井、地震等資料,井震結(jié)合,運用層序地層學(xué)原理、時頻分析與分頻解釋技術(shù),在地震上識別并追蹤等時界面,將葡萄花油層劃分為1個四級層序、3個五級層序和9個六級層序,建立了該區(qū)的等時地層格架。研究區(qū)葡萄花油層沉積時期,地勢平緩,四級和五級層序的地層發(fā)育較為穩(wěn)定,六級層序受沉積微相變化的影響,局部厚度受河道砂體發(fā)育的控制,存在橫向差異性。研究區(qū)井網(wǎng)分布不均,井距大,開發(fā)井僅在小區(qū)域密集分布,僅僅依靠井資料難以精細(xì)刻畫沉積相發(fā)育特征及砂體展布規(guī)律,論文開展了井震結(jié)合的沉積微相精細(xì)刻畫方法探索。在巖心、測井分析的基礎(chǔ)上,將地震屬性分析技術(shù)、地震波形分類技術(shù)等地球物理方法與90°相位轉(zhuǎn)換、地層切片、分頻解釋等地震沉積學(xué)關(guān)鍵技術(shù)相結(jié)合,對沉積微相的垂向和平面特征進行了精細(xì)描述,劃分和識別了研究區(qū)7種沉積微相類型,總結(jié)了研究區(qū)砂體的三種疊置模式,提出并建立了研究區(qū)網(wǎng)狀河三角洲沉積模式,揭示了研究區(qū)不同沉積砂體的空間展布規(guī)律。在此基礎(chǔ)上,結(jié)合研究區(qū)葡萄花油層成藏規(guī)律和成藏特征的認(rèn)識及已有試油井和鄰區(qū)開發(fā)井資料,預(yù)測了葡萄花油層組的有利含油相帶。論文通過開展井震結(jié)合的研究,建立了大情字井地區(qū)葡萄花油層高精度等時地層格架,精細(xì)刻畫了目的層段沉積微相發(fā)育特征及砂體展布規(guī)律,預(yù)測了有利相帶,為油田進一步勘探開發(fā)提供了科學(xué)依據(jù),同時形成了適合松遼盆地網(wǎng)狀河三角洲沉積刻畫的地震沉積學(xué)研究方法。
[Abstract]:The DASIZIZHAN area is located in the south of the central depression of the southern Songliao Basin and in the middle of the Changling oil-rich depression. In the study area, the stratigraphic division of the Putaohua reservoir is not fine, the well point distribution is irregular, the sand body is narrow and thin, the study of sedimentary facies is difficult, and the understanding of sedimentary characteristics and distribution law of sand body is not clear, which seriously restricts the further exploration and development of oil fields. Therefore, under the guidance of the regional sedimentary background in the study area, the high-resolution sequence stratigraphy principle and seismic sedimentology method are used to establish the high-precision isochronous stratigraphic framework and to depict the sedimentary microfacies comprehensively. In the study area, the reservoir of Grape flower is complicated, the lateral change of sand body is large, the well point distribution is irregular, and the isochronous stratigraphic correlation is difficult. Using the core, logging, seismic and other data, combining well and earthquake, using sequence stratigraphy principle, time-frequency analysis and frequency division interpretation technology, identifying and tracing isochronous interface on earthquake, The Putaohua oil reservoir is divided into four levels, three five-order sequences and nine sixth-order sequences, and the isochronous stratigraphic framework is established in this area. In the study area, during the depositional period of the Grape flower reservoir, the topography was gentle, the stratigraphic development of the fourth and fifth order sequences was relatively stable, the sixth order sequence was affected by the sedimentary microfacies change, the local thickness was controlled by the development of the channel sand body, and there were lateral differences. In the study area, the distribution of well pattern is uneven, the well spacing is large, and the development wells are only densely distributed in small areas. It is difficult to describe the characteristics of sedimentary facies development and the rule of sand body distribution on the basis of well data alone. In this paper, the fine description method of sedimentary microfacies combined with well-shock is explored. On the basis of core and log analysis, geophysical methods such as seismic attribute analysis and seismic waveform classification are combined with key seismic sedimentology techniques such as 90 擄phase conversion, stratigraphic slicing, frequency division interpretation, etc. The vertical and plane characteristics of sedimentary microfacies are described in detail. Seven types of sedimentary microfacies in the study area are divided and identified. Three superposition models of sand bodies in the study area are summarized, and the sedimentary model of reticular river delta in the study area is proposed and established. The spatial distribution of different sedimentary sand bodies in the study area is revealed. On this basis, the favorable oil-bearing facies zone of the Putaohua formation is predicted by combining the understanding of the reservoir formation and the characteristics of the reservoir in the study area, as well as the existing data of the test wells and the development wells in the adjacent areas. Through the research of well and earthquake combination, the high precision isochronous stratigraphic framework of Putaohua oil reservoir in Dazhengzhijing area is established, and the development characteristics of sedimentary microfacies and the rule of sand body distribution in the target zone are described in detail, and the favorable facies zone is predicted. It provides a scientific basis for further exploration and development of oil fields and forms a seismic sedimentology research method suitable for the sedimentary characterization of netted river deltas in Songliao Basin.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13;P631.4
本文編號：2243345
[Abstract]:The DASIZIZHAN area is located in the south of the central depression of the southern Songliao Basin and in the middle of the Changling oil-rich depression. In the study area, the stratigraphic division of the Putaohua reservoir is not fine, the well point distribution is irregular, the sand body is narrow and thin, the study of sedimentary facies is difficult, and the understanding of sedimentary characteristics and distribution law of sand body is not clear, which seriously restricts the further exploration and development of oil fields. Therefore, under the guidance of the regional sedimentary background in the study area, the high-resolution sequence stratigraphy principle and seismic sedimentology method are used to establish the high-precision isochronous stratigraphic framework and to depict the sedimentary microfacies comprehensively. In the study area, the reservoir of Grape flower is complicated, the lateral change of sand body is large, the well point distribution is irregular, and the isochronous stratigraphic correlation is difficult. Using the core, logging, seismic and other data, combining well and earthquake, using sequence stratigraphy principle, time-frequency analysis and frequency division interpretation technology, identifying and tracing isochronous interface on earthquake, The Putaohua oil reservoir is divided into four levels, three five-order sequences and nine sixth-order sequences, and the isochronous stratigraphic framework is established in this area. In the study area, during the depositional period of the Grape flower reservoir, the topography was gentle, the stratigraphic development of the fourth and fifth order sequences was relatively stable, the sixth order sequence was affected by the sedimentary microfacies change, the local thickness was controlled by the development of the channel sand body, and there were lateral differences. In the study area, the distribution of well pattern is uneven, the well spacing is large, and the development wells are only densely distributed in small areas. It is difficult to describe the characteristics of sedimentary facies development and the rule of sand body distribution on the basis of well data alone. In this paper, the fine description method of sedimentary microfacies combined with well-shock is explored. On the basis of core and log analysis, geophysical methods such as seismic attribute analysis and seismic waveform classification are combined with key seismic sedimentology techniques such as 90 擄phase conversion, stratigraphic slicing, frequency division interpretation, etc. The vertical and plane characteristics of sedimentary microfacies are described in detail. Seven types of sedimentary microfacies in the study area are divided and identified. Three superposition models of sand bodies in the study area are summarized, and the sedimentary model of reticular river delta in the study area is proposed and established. The spatial distribution of different sedimentary sand bodies in the study area is revealed. On this basis, the favorable oil-bearing facies zone of the Putaohua formation is predicted by combining the understanding of the reservoir formation and the characteristics of the reservoir in the study area, as well as the existing data of the test wells and the development wells in the adjacent areas. Through the research of well and earthquake combination, the high precision isochronous stratigraphic framework of Putaohua oil reservoir in Dazhengzhijing area is established, and the development characteristics of sedimentary microfacies and the rule of sand body distribution in the target zone are described in detail, and the favorable facies zone is predicted. It provides a scientific basis for further exploration and development of oil fields and forms a seismic sedimentology research method suitable for the sedimentary characterization of netted river deltas in Songliao Basin.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13;P631.4
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