Study On Technical Policy Of Hot Water Flooding In Deep Heavy Oil Reservoir

As one kind of unconventional oil and gas resources^eavy oil is widely distributed in the world. It is account for a large proportion of the glal petroleum production in the foundation of relatively mature development techniques. has such an important strategic significance that recovering heavy oil efficiently can addres the China’s needs of resourses and promote the economic development of society.Thermal recovery techniques are the primary means of rovering the heavy oil. Through this method the heat can be introduced to reduce the viscosit of heavy oil in the formation, making it more easily to be recovered from the reservoir.There are difficults such as large burial depth, recoverin heavy oil, making effective policy of development and so on in the development of J of field, which is the research objective in this article. On the basis of a large number of leratures and information of developing heavy oil reservoirs and a comprehensive applicatin of reservoir engineering, heat transfer, mathematical statistics. The use of hot water flooing technique to the target reservoir is investigated, aiming to make a reasonable reservoir deelopment technique policy. The major conclusions can be summarized as follows:(1) The overview of J oil field are analyzed through structural fatures and reservoir type, fluid properties and reservoir characteristics, reservoir pressure and tenperature reservoir with aspects of research on the comprehensive evaluation of the objectives n this article.(2) A reliable reservoir numerical simulation model has been estalished.(3) J oil field’s heavy oil reservoir hot water flooding technique pdicy is investigated by using numerical reservoir simulation software CMG, STARS (thermal rcovery) module. Hot water flooding on various parameters such as injection of hot water temperature, injection pressure, bottomhole pressure production wells, well spacing selection art optimized.(4) Wellbore heat loss phenomenon of heavy oil reservoir is also investigated in this article. A software about wellbore temperature distribution is programmed by the presented physical model and computational model of wellbore heat loss. Se the temperature distribution in the wellbore based on an example of oil field can be calculated.(5) A preferred embodiment is determined through the optimized hot water flooding parameters by orthogonal experimental design. Therefore a reasonable hot water flooding development policy can be formulated.The analysed results show that hot water flooding method can effectively increase oil production, obtaining good economic benefits and improving the overall efficiency of development in J oil field. The searchs in this article have important guidance and enlightenment for developing heavpil reservoirs.