雷家地區(qū)致密油綜合研究與勘探目標(biāo)優(yōu)選
[Abstract]:Dense oil refers to the accumulation of petroleum which is not formed by large-scale long distance migration in tight clastic rock or carbonate reservoir of high quality oil source system, and generally has no natural productivity. Large-scale fracturing technology is needed to form industrial production capacity. The physical properties of the dense oil are determined to be that the surface air permeability is less than 1mD and the underground overpressure permeability is less than 0.1mD. Liaohe Lejia area has been explored since 1970's. The zone has a number of exploration wells industrial oil flow. Since the industrial oil flow was obtained in well Gao 34, the research work in this area has been in general production management. With the gradual improvement of exploration degree and the continuous improvement of development means, more than ten exploration wells have been deployed in this area since 2008. The well Gaogu 2, Gaogu 14, Gaogu 15, Lei 77, Lei 84, Lei 86 and Lei 88 have all been well oil and gas displayed in the fourth member of Shahejie formation. However, with the development of exploration and development, only a small part of the proven reserves reported in this area is put into development. Most wells are characterized by high initial production, rapid decline of production, and no oil production without engineering transformation. With the development of dense oil research at home and abroad, in 2011 Liaohe Oilfield Company decided to set up a tight oil and gas research group in the fourth member of Leijiasha formation of Liaohe River, with several units working together to carry out reasonable and effective exploration and development of compact oil in the fourth member of Leijiasha formation. Since the establishment of the group, the theory of "seven properties" of dense oil has been used in the study of Lei Jia dense oil, and the lithology has been analyzed. There are five main types of lithology in Dujiatai reservoir. The lithology of the Gaosheng reservoir is similar to that of the Dujiatai reservoir, which is mainly composed of muddy dolomite and dolomitic mudstone, and granulite dolomite is developed in some regions. Its porosity and permeability are less than 1, and its distribution range is predicted to be about 300km2. The characteristics of oil-bearing gas, physical property, source rock and in-situ stress are also analyzed.
【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】:TE34
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