Abstract
This paper, by conducting comprehensive analysis on water-flooding reservoir, intensively studied and discussed the characteristics of geological development, determined the evaluation indexes of development effect, carried out research from five steps, the first is the introduction part, it conducted indepth study and discussion from research background, research significance, literature review, and research methods four aspects. The second outlined the related theory from the optimization principle and mechanism of injection-production parameters, and the distribution mechanism of remaining oil two aspects. The third analyzed the current situation of reasonable injection-production of water-flooding reservoirs in Daqing Oilfield from reservoir characteristics and reservoir deposition. The fourth evaluated the water-flooding development effect from combined water cut, changing conditions of production and predicted recovery ratio. The fifth intensively studied the reasonable injection-production parameters of water- flooding reservoirs in Daqing oilfield from design of separated layer water injection plan, maintaining level reservoir formation pressure, and reasonable plan of injection-production ratio and oil recovery rate three aspects, and provides theoretical guidance for later targeted excavation of water-flooding reservoirs.
Highlights
Survey of Daqing OilfieldDaqing Oilfield was discovered in 1959 and started to develop in 1960, Daqing Oilfield is the largest oilfield in China, and it is one of the largest continental sandstone oilfields in the world
This paper, by conducting comprehensive analysis on water-flooding reservoir, intensively studied and discussed the characteristics of geological development, determined the evaluation indexes of development effect, carried out research from five steps, the first is the introduction part, it conducted indepth study and discussion from research background, research significance, literature review, and research methods four aspects
Daqing Oilfield is located in the northern part of the Songnen Plain and the middle and western part of Heilongjiang, the oil and gas in this oil field consists of oil and gas in Lamadian, Hailar, Chaoyanggou, Saertu, Xingshugang and so on
Summary
Daqing Oilfield was discovered in 1959 and started to develop in 1960, Daqing Oilfield is the largest oilfield in China, and it is one of the largest continental sandstone oilfields in the world. Due to the channel nature of the faulted water layer, oil and gas can move upward, they can be stored in the top of the section II of Nengjiang, the section III of Nengjiang and the section V of Nengjiang area, and even reach the Mingshui group, forming the secondary oil and gas reservoir. They are still controlled by the structure. The reservoir types in the Daqing Oilfield are relatively simple, due to the influence of anticlinal structural factors, it plays an important role in the formation of oil and gas reservoirs in this area, due to the influence of faults, lithology and other factors, it has a certain impact in some positions, structural oil-gas reservoirs and different types of composite oil-gas reservoirs are formed
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