Abstract
Abstract This paper discusses the development challenges of an offshore fluvial oil reservoir with horizontal well. In highly productive sandstone reservoirs, horizontal wells suffer from uneven flow profile and subsequent premature coning effects because of sand heterogeneity and heel to toe effect. Moreover, excessively increasing the rate or horizontal well length can increase the risk of limiting sweep efficiency, resulting in bypassed remaining oil in the toe or poor sand with low permeability. Firstly, we anlayse the characters of fluvial oil reservoir focusing on architecture and heterogeneity. Secondly, the sweep efficiency was calculated by the production data of existing horizontal wells. Lastly, we optimize ICD (inflow control device) for several wells and compare the response of ICD wells with standalone wells.
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