Development Characteristics and Development Adjustment Countermeasures of Wangji Oilfield

Wangji oilfield is a complicated fault-block oilfield, with many oil-bearing systems and severe heterogeneity. More and more problems and conflicts are exposed during the production and it is hard to produce the remaining oil, when entering into the medium-late water cut stage. In this paper, current development characteristics and main existing problems of Wangji oilfield are analyzed, including low development degrees of reserve, low recovery percent, low oil recovery rate, low perfecting degree of well pattern and so on. The combined research means of reservoir performance analysis and numerical simulation are used to analyze the distribution characteristics and rich region of remaining oil, then, the technology policies of vector well pattern[1] adjustment which is suitable for later development was put forward. Based on these, the injection-production system was adjusted, the injection - production corresponding relation was improved and the economic benefit was increased, which possesses reference meaning in the development of the similar oilfield in future.