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volcanic reservoirs widely distribute in the east and west of China, and become a hot area of exploration and development in recent years. Due to the dual or even multiple porous media of volcanic reservoirs and complex reservoir spaces and construct types, it is extremely difficult to development this type of reservoirs. There is not a systematic and mature development mode in the world at present. Reports on the exploitation of volcanic reservoirs are few and reports on the volcanic fractured heavy oil reservoir exploitation are even fewer. Zao 35 fault block of Zaoyuan oilfield is a heavy oil reservoir with complex reservoir spaces, construct types, bottom-water, no edge-water and natural energy exploitation in initial stage. Due to insufficient formation energy, the production rapid declines. Some different field tests such as water drive and microbe drive were carry out later. In this paper, taking Zao 35 as an example, the reasonable volcanic fractured heavy oil reservoir development modes are discussed basing on different field tests analysis combined with numerical reservoir simulation study.

The Research in Reasonable Development Mode of Volcanic Fractured Heavy Oil Reservoir: A Case Study of Zao 35 Fault Block