【摘要】：肇51-59井區(qū)位于黑龍江省大慶市境內(nèi),構(gòu)造位置位于松遼盆地三肇凹陷,研究區(qū)面積約為19km2。論文針對(duì)研究區(qū)構(gòu)造特征認(rèn)識(shí)欠精準(zhǔn),沉積微相相帶和砂體分布不清晰等問題,利用地質(zhì)、地球物理及油氣測試資料,重點(diǎn)對(duì)區(qū)塊的構(gòu)造特征,沉積微相以及砂體分布進(jìn)行研究,最后綜合油藏特征,優(yōu)選有利區(qū)。主要取得的成果與認(rèn)識(shí)如下:(1)利用三維可視化技術(shù)以及相干體切片技術(shù)進(jìn)行構(gòu)造解釋,精細(xì)識(shí)別了小斷層,重新修編斷層組合關(guān)系。解釋結(jié)果表明,研究區(qū)構(gòu)造呈南高北低的趨勢,斷層分布極其復(fù)雜,主斷層與派生斷層縱橫交錯(cuò)形成棋盤網(wǎng)狀格架,形成了研究區(qū)眾多的斷鼻、斷塊等構(gòu)造。(2)在前人研究成果的基礎(chǔ)上,明確葡萄花油層為三角洲前緣亞相沉積,主要發(fā)育水下分流河道,河口壩,席狀砂和前緣泥四種沉積微相。物源方向?yàn)槟媳毕?垂向上表現(xiàn)為水進(jìn)-水退-水進(jìn)的演化特征。研究區(qū)東北部由北向南主要發(fā)育一條水下分流河道,在井區(qū)中南部分支為向西南和東南延伸的兩條分流河道。河口壩小范圍發(fā)育,席狀砂廣泛發(fā)育。(3)利用地震屬性資料,以實(shí)鉆數(shù)據(jù)資料為約束,運(yùn)用多元逐步回歸分析法進(jìn)行砂體預(yù)測,明確研究區(qū)葡萄花油層砂體總體呈南北向條帶狀展布,中部厚,東西薄,尤其以中南部砂體最為發(fā)育,預(yù)測厚度為8-10m。砂巖預(yù)測結(jié)果與實(shí)鉆砂巖厚度吻合程度高,預(yù)測效果較好。(4)在明確構(gòu)造特征及油藏特征的基礎(chǔ)上,結(jié)合砂體預(yù)測成果與區(qū)內(nèi)完鉆井試油情況,在研究區(qū)優(yōu)選出5個(gè)有利區(qū),其中包括2個(gè)Ⅰ類有利區(qū),3個(gè)Ⅱ類有利區(qū)。
[Abstract]:The well area of the Well Q51-59 is located in the city of Daqing, Heilongjiang Province. The structural position is located in the Sanqi depression of the Songliao Basin. The area of the study area is about 19km2. The paper studies the structural characteristics, sedimentary microfacies and sand body distribution of the block by using the geological, geophysical and oil-gas test data, and finally, the characteristics of the reservoir are integrated. A preferred region is preferred. The main results and the recognition are as follows: (1) The structure interpretation is carried out using the three-dimensional visualization technique and the coherent body slicing technique, and the small fault and the re-repair fault combination relationship are fine identified. The results show that the structure of the study area is in the south and the north is low, the fault distribution is extremely complex, and the main fault and the derived fault crisscross to form a chessboard grid, so as to form a large number of fault nose, fault block and other structures in the research area. (2) On the basis of the previous research results, it is clear that the hydatidiform oil layer is the delta front subfacies deposit, which mainly develops four sedimentary microfacies of the underwater distributary channel, the river mouth dam, the mat-like sand and the leading edge mud. The source direction of the material is the north-south, and the vertical direction is the evolution of the water-in-water-water-return-water. The north-east of the study area is mainly developing an underwater distributary channel from the north to the south, and the south-central part of the well area is divided into two distributary channels extending to the southwest and southeast. The small-scale development of the river-mouth dam and the wide development of the mat-like sand. (3) Using the data of the seismic attribute and using the real-drilling data as the constraint, the sand body is predicted by the multi-element stepwise regression analysis method, The predicted thickness is 8-10m. The result of the sandstone prediction is high with that of the real-drilling sandstone, and the prediction effect is good. (4) Based on the clear structural characteristics and the characteristics of the reservoir, in combination with the prediction results of the sand body and the completion of the drilling test in the area, five favorable areas are preferred in the study area, including 2 favorable areas of Class I and 3 class II favorable areas.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13

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本文編號(hào)：2498498