|
Fuyu oilfield is the sandstone reservoir of low permeability and multiple fractures,as reservoir heterogeneity and post-fracturing, resulting in invalid serious water cycle, water rose quickly. To improve the water flooding effects, needed for deep profile technology of fractured reservoir ,sealing channeling, expanding into the waves and the volume of enhanced oil recovery.Based on the reservoir analysis of the test area, qualitative judgments dominant channel type, and initial injection of quantitative edge channel radius. According to the type of channeling ,carried out profile control agent evaluation study: a high permeability reservoir channeling-based, developed a gel profile control agent for low temperature reservoir; targeted mainly to crack channeling reservoir, the particle profile control agent for the screening evaluation to determine the profile control agent particle size, concentration and carrying concentration used.The dominant channel knowledge, based on the physical model study to optimize the program design of the deep profile, determine a variety of profile control agent compound used in slug profile way, and form sub-transfer profile technology and in-hole multiwell same tune profile control mode. Field test to obtain a clear profile control.
|