The Technology Research Of Guqi9 Block Steam Flooding

Gudao Oilfield is categorized as heavy oil reservoir with thin layer of unconsolidated sandstone . Adopting the technology of steam injection, it was successfully put into industrial development. After the depth of high-round development during high-water-cut stage, most of thermal recovery wells entered 5 to 6 cycles cause some problems, such as, the increasing intrusion of water, the drop of production and the economical deterioration. Since 2008 to ensure the stable production of Gudao Oilfield, the feasibility studies of steam flooding were carried out in block Guqi9.Due to the very complex geological condition ,this paper carried out the research of detailed reservoir description .It contains the micro structures , the reservior heterogeneity,etc. that influencing the distribution of remaining oil. Then according to steam drive mechanism and numerical simulation results, it gives the screening criteria of the stream drive. Finally, A synthetic study on the perforation of supporting the steam flooding technology, production and injection techniques, injection and production adjustment, dynamic monitoring has been made. It finds out a supporting technology of the steam flooding for Gudao Oilfield. In block Guqi9, the effect of steam flooding technology is significant on water cut, production and oil recovery.