Abstract: Dolomite reservoirs in the YM32 Oilfield are structurally complex and the remaining oil is distributed in various patterns and can hardly be treated at the stage of high water content, resulting in challenges to the efficient and steady development of the oilfield. In this paper, the concept of geology-engineering integration was introduced to explore a practical way of “embedded” geology-engineering integration for remaining oil potential tapping by “embedding” the engineering staff into the geology research team. A series of potential tapping measures, such as the cyclic nitrogen huff and puff and the horizontal-well geosteering sidetracking, were proposed jointly for different geological patterns of remaining oil distribution. In the process of engineering implementation, the engineering technology program was adjusted and improved continuously by comprehensively analyzing multi-disciplinary knowledge and engineering data, including oil reservoir geology, geophysics, drilling and testing. Eventually, the remaining oil in fractured-porous dolomite reservoirs was developed with economic benefits. The productivity of 40×104 t/a was constructed as the schedule and the production of crude oil has been stable for 4 years. The application of geology-engineering integration in the remaining oil potential tapping of YM32 Oilfield provides the valuable reference for the efficient development of other similar oil reservoirs.

Key words: geology-engineering integration, dolomite oil reservoir, remaining oil potential tapping, oil displacement by gas injection, geosteering horizontal well