本文選題：高分辨率層序地層學(xué) + 巖性油氣藏�。� 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：本文在高分辨率層序地層學(xué)和精細(xì)沉積學(xué)的指導(dǎo)下,利用研究區(qū)的取心井、測(cè)井、地震等資料進(jìn)行綜合分析,根據(jù)“逐級(jí)標(biāo)準(zhǔn)等時(shí)面逼近旋回對(duì)比”的對(duì)比方法,將葡西油田黑帝廟油層(H2)劃分為分為1個(gè)中期基準(zhǔn)面旋回、5個(gè)短期基準(zhǔn)面旋回、10個(gè)超短期基準(zhǔn)面旋回,建立了全區(qū)統(tǒng)一精細(xì)的高分辨率層序地層格架,提出了“地層西薄東厚、南薄北厚,SSSC1為最大水退面,總體基準(zhǔn)面持續(xù)下降”的地層發(fā)育模式。在精細(xì)等時(shí)格架的控制下分析了物源、沉積相特征,提出了研究區(qū)黑帝廟油層主要為北部及西北物源沉積,為河控緩坡三角洲沉積體系,總體呈北-南向展布,反映了湖盆向上逐步萎縮的一個(gè)沉積背景下形成的反旋回砂泥巖沉積體系,不存在分流平原亞相,水下分流河道向湖盆推進(jìn),形成窄枝狀的水下分流河道,在水下分流河道的兩側(cè)大面積發(fā)育席狀砂,河口壩呈點(diǎn)狀分布,在SSSC5~SSSC9發(fā)育垂直于水下分流河道走向的遠(yuǎn)砂壩,儲(chǔ)集層主要為水下分流河道砂體、河口壩砂體、遠(yuǎn)砂壩砂體及少量席狀砂。在建立地層格架、確立物源及確立沉積微相單砂體空間分布的基礎(chǔ)之上,以油氣成藏系統(tǒng)等現(xiàn)代油氣地質(zhì)學(xué)等理論為指導(dǎo),運(yùn)動(dòng)區(qū)域成藏分析技術(shù)、單砂體控油模式分析技術(shù)等,結(jié)合現(xiàn)場(chǎng)動(dòng)態(tài)資料,動(dòng)靜結(jié)合分析研究區(qū)黑帝廟油層的油氣分布規(guī)律,在完成了油氣縱向、平面上油氣分布規(guī)律的基礎(chǔ)上,對(duì)油氣藏的類型及其特征進(jìn)行分析,揭示了單一圈閉內(nèi)部局部構(gòu)造與單砂體控制油氣分布邊界,單砂體縱向分布位置控制油氣分布層位的特點(diǎn)。垂向上發(fā)育層數(shù)多、平面上變化快的砂體與復(fù)雜的局部構(gòu)造在空間上相組合是造成研究區(qū)復(fù)雜油水分布的根本原因,局部構(gòu)造與單砂體的空間組合關(guān)系是單一圈閉內(nèi)控油的主要影響因素。對(duì)下一步的巖性油氣藏的勘探與開發(fā)有實(shí)用和指導(dǎo)價(jià)值。
[Abstract]:Under the guidance of high resolution sequence stratigraphy and fine sedimentology, the coring wells, logging and seismic data in the study area are used for comprehensive analysis, and according to the comparison method of "step by step standard isochron approximation cycle correlation", The H2 of Heidimiao oil reservoir in Puxi Oilfield is divided into 1 intermediate base-level cycle, 5 short-term base-level cycles and 10 ultra-short-term base-level cycles. The fine high-resolution sequence stratigraphic framework of the whole region is established, and the "formation thickness in the west, thin and east" is proposed. The model of stratigraphic development is that SSSC1 is the largest water regression surface and the general datum level is decreasing continuously. Under the control of fine isochronous frame, the characteristics of source and sedimentary facies are analyzed, and it is suggested that the northern and northwest provenance deposits of Heidimiao oil layer in the study area are mainly fluvial gentle slope delta sedimentary systems, which are distributed generally in a north-south direction. It reflects the anti-cyclic sand and mudstone sedimentary system formed under a sedimentary background that the lake basin gradually shrinks upward, and there is no distributary plain subfacies, and the underwater distributary channel advances to the lake basin and forms a narrow branched underwater distributary channel. Sheet sand is developed on both sides of underwater distributary channel, and estuarine dam is distributed in dot shape. In SSSC5~SSSC9, the reservoir is mainly composed of underwater distributary channel sand body and estuarine bar sand body, which is perpendicular to underwater distributary channel. Far sand bar sand body and a small amount of sheet sand. Based on the establishment of stratigraphic framework, provenance and spatial distribution of sedimentary microfacies single sand body, and guided by modern oil and gas geological theories, such as oil and gas accumulation system, the technique of reservoir forming analysis in moving regions is used. The oil and gas distribution law of Heidimiao oil reservoir in the study area is analyzed by combining the oil and gas control model analysis technique of single sand body and field dynamic data. On the basis of completing the oil and gas vertical and plane oil and gas distribution law, the oil and gas distribution law of Heidimiao oil and gas reservoir has been studied. The types and characteristics of oil and gas reservoirs are analyzed. The characteristics of local structure in single trap and single sand body controlling oil and gas distribution boundary and single sand body vertical distribution position control oil and gas distribution horizon are revealed. The spatial combination of rapidly changing sand bodies and complex local structures is the fundamental reason for the complex distribution of oil and water in the study area. The spatial combination relationship between local structure and single sand body is the main influencing factor of oil control in single trap. It has practical and guiding value for the exploration and development of lithologic reservoirs in the next step.
【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】：2015
【分類號(hào)】：P618.13;P539.2

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