Evaluation of geological effects of acid-fracturing in deep carbonate reservoirs: taking the fractured-vuggy carbonate reservoirs in Tahe oilfield as an example
Acid fracturing treatment of deep carbonate reservoirs is to establish communication between the fractures generated and natural fractures and vugs. Based on the variation modes of operating curves of acid fracturing treatment, and the geological effects of the treatment, 4 appraisal systems have been suggested each of which corresponds to one of the acid fracturing modes, including no fracture have been created (type Ⅰ), fractures have just been created and then stop (type Ⅱ), fracture have been created...