【摘要】：江75區(qū)塊構造位置處于西部斜坡的江橋—泰來鼻狀構造帶,區(qū)內(nèi)斷裂較發(fā)育。主要含油層位為高一組油層和薩二、三油層。以研究區(qū)高一組油層和薩爾圖油層為研究對象,應用現(xiàn)有的探井、評價井及開發(fā)井資料,開展了地層旋回對比、儲層沉積微相識別,應用分析化驗資料總結儲層特征和非均質性。在此基礎上,結合三維地震解釋及反演成果,建立了地質模型,并提出了有利布井區(qū)。江75區(qū)塊高一組及薩爾圖油層,在斜坡背景下整體呈現(xiàn)西高東低的趨勢。應用旋回對比方法,將高一組劃分為3個小層,將薩爾圖油層3個砂層組細分為11個小層,建立了江75區(qū)塊高一組和薩爾圖層地層格架。根據(jù)地質、錄井及測井資料,研究區(qū)高一組及薩爾圖層主要發(fā)育三角洲前緣、濱淺湖亞相沉積。儲層沉積微相類型主要是三角洲前緣中的水下分流河道、河口壩、遠砂壩和濱淺湖亞相中的砂壩沉積。高一組油層砂體厚度大,主要以水層為主,含油層位僅分布于江37井區(qū)的GI1小層。主力含油層位為薩二、三組上部,含油砂體類型為水下分流河道和河口壩。根據(jù)實驗數(shù)據(jù)結果,薩爾圖層孔、滲條件較好,非均質性強。在地層對比及識別沉積微相基礎上,結合地震資料,應用地質建模軟件,建立了高一組和薩爾圖層的構造模型、巖相模型和油藏屬性模型。根據(jù)上述研究成果,提出江77井區(qū)薩二、三組油層為有利布井區(qū)。研究結果完善了江75區(qū)塊儲層特征,掌握砂體分布規(guī)律,為現(xiàn)有開發(fā)區(qū)塊外擴打下堅實地質基礎。
[Abstract]:Jiang75 block is located on the western slope of Jiangqiao-Tailai nasal structural belt, and the faults in the area are relatively developed. The main oil-bearing layers are Gao 1 formation and sa 2 and 3 oil layers. Based on the existing data of exploration wells, evaluation wells and development wells, the formation cycle correlation and reservoir sedimentary microfacies identification are carried out by taking the high group of oil layers and Saltu oil layers in the study area as the research objects, and using the existing data of exploration wells, evaluation wells and development wells. The reservoir characteristics and heterogeneity are summarized by using analytical laboratory data. On this basis, combined with 3D seismic interpretation and inversion results, a geological model is established, and a favorable well layout area is proposed. The Gaoyi formation of Jiang75 block and the Saltu reservoir show a trend of west high and east low under the background of slope. By using cyclic correlation method, Gao Yi group is divided into 3 sub-layers, and 3 sand layers in Saltu oil reservoir are subdivided into 11 sublayers, and a stratigraphic framework of high first group and Saltu layer in Jiang75 block is established. According to the geological, logging and logging data, the delta front and shoreline subfacies are mainly developed in the high group and Saltu layer in the study area. The reservoir sedimentary microfacies are mainly subaqueous distributary channel in delta front, estuarine dam, far sand dam and sand bar deposit in shoreside shallow lacustrine subfacies. The sand body of the first group of oil reservoirs is thicker, mainly water layer, and the oil-bearing layer is only distributed in the GI1 sublayer of Jiang37 well area. The main oil-bearing horizon is the upper part of the second and third groups, and the oil-bearing sand bodies are subaqueous distributary channel and estuarine dam. According to the experimental data, Saltu layer pore, infiltration conditions are better, heterogeneity is strong. On the basis of stratigraphic correlation and identification of sedimentary microfacies, combined with seismic data and using geological modeling software, the structural model, lithofacies model and reservoir attribute model of Gaoyi and Saltu layers are established. According to the above research results, it is suggested that the second and third groups of oil layers in Jiang77 well area are favorable well distribution areas. The results improve the reservoir characteristics of block Jiang75, master the rule of sand body distribution, and lay a solid geological foundation for the external expansion of the existing development blocks.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13

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