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The Study of Advanced Injection in the Chang 10 Block of Chao Yanggou Oilfield

Author: HanLi
Tutor: WangLiJun
School: Daqing Petroleum Institute
Course: Oil and Gas Field Development Project
Keywords: advanced injection low-permeability oilfield oilfield development injection pressure
CLC: TE348
Type: Master's thesis
Year: 2010
Downloads: 81
Quote: 0
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Abstract


With the extent of petroleum exploration and development degree, the proportion of reserves of low-permeability oilfield is much bigger. The low-permeability oilfield has big developed difficulty because of its bad reservoir nature and low individual well producing rate. The criticality of the low-permeability oilfield development is keeping the formation pressure. Advanced injection and injection strategy that is injecting water before oil well beginning to produce. It can reasonably supplement producing energy and raise reservoir pressure, which makes oil well keeping higher production capacity for a long time and production decline obviously decrease. Wherefore it is necessary that advanced injection is thoroughly researched in order to develop low-permeability oilfield well.On the basis of its geologic characteristic and drawing lessons from development experience of home and abroad oilfield, this paper proposes that advanced injection is utilized to develop low-permeability oilfield for the sake of development low-permeability oilfield and improving producing reserves. Advanced injection can keep the high level of reservoir pressure, effective system of pressure displacement was established, this technology can increase well yield and decrease containing water. Filtration law of ultra-low permeability was recognized depending on many measures, such as fluid mechanics in porous medium, petroleum reservoir engineering, and numerical model. The system of advanced injection was systematically studied about improving development effectiveness. It can provide theoretic reference and technical assistance in order to enhance capture efficiency and draw up advisable technical policy of advanced injection.In this paper, The Chang 10 block of Chao Yanggou oilfield was taken for the example, many important parameters about advanced injection was ascertained under the condition of keeping advisable formation pressure, which are injection pressure, water intake per unit thickness, reasonable flow pressure, and injection flow rate so on. Filtration model was established drawing support from the theory of reservoir engineering and filtration theory of low-permeability oilfield, reservoir pressure was figured out by utilizing model, moreover, its accuracy was verified by numerical analogue.

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CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Oil field development ( reservoir engineering ) > Low-permeability oil field development
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