| Acid treating is one of the necessary stimulation treatments during the process of completion and production of carbonate reservoir as well as other kinds of reservoirs. This paper studied on operating fluid system required in implementation of acid fracturing in Block Li 912, and proposed a typical prescription of acidizing fluid, acid fracturing process and requirements of operation fluid system.This paper studied on the necessary performance of operating fluid, optimization of acidizing fluid, selection and appraisal of acid additive by analysing of testing and production data. Furthermore, it appraised the overall performance and the compatibility of ahead fluid by experiment. Parameters of kinetics of acid-sand were got and analysed by experiment on kinetics.A 3-D acid fracturing optimization software and a multistage injection acid fracturing optimization software were used to optimize parameters and propose acid fracturing scheme. Volume, cost as well as the requirements of fluid were also determined.
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