The Stimulation Technology Research and Application in the Heavy-Oil Carbonate Reservoir of the Fracture and Cavity

摘要

The Ordovician carbonate reservoir in Taliram Basin is typical of fractured and caved reservoirs with thick oil layer high temperature,deep zone and extra heterogeneity together with high density,high viscosity and high freezing point et al as common characteristics of crude oil.More than 80%wells have to be stimulated before economically producing.Based on the laboratory researches and plentiful field practices,the following stimulation modes are formed:the multiplayer acid-fracturing for long open-hole interval or layered acid-fracturing,height control acid-fracturing against bottom water coining