Integration of 4D Microgravity, Geology and Production Data to Monitor Water Injection in Improved Oil Recovery Project, Diamond Field

Water injection is common technology applied to maintain the reservoir pressure under Improved Oil Recovery (IOR) scheme. Reservoir pressure maintenance is required to sustain the oil production and maximize oil recovery. Water injection is to be technically and economically designed, properly implemented and thoroughly evaluated. When the water injection is commenced, it is essential to conduct technical evaluation to monitor its effectiveness in order to achieve the goal and objectives. Understanding the reservoir fluid dynamics including the injected water movement is the key for optimizing the water injection. Production, geological and geophysical data are to be integrated to portray the reservoir fluid saturation changes. A comprehensive analysis of time lapse (4D) microgravity, production and geology is used to evaluate the water injection performance. The 4D microgravity that passively surveyed at the arranged stations is easy to operate, competitive and technically accepted. Several time-lapse microgravity that was surveyed in water injection IOR, Diamond field, would provide different time lapse microgravity anomaly for further analysis. This research applies forward modeling of microgravity anomaly to match with the reservoir production performance. The outcomes from this joint study would then be used to support continuous water injection optimization and improvement. Other than subsurface integration, from surface operation point of view, water injection improvement also involves surface discipline which consists of production operations and construction that responsible for surface facilities operations and construction.