Study on Improvement of Acidizing Fracturing Formula in Carbonate Reservoir

Abstract

Abstract: The acidizing fracturing is a kind of stimulation technology for oil and gas reservoir. At present, this technology is applied to the geothermal Well and has become an effective means to solve the stimulation of hydrothermal geothermal system. The paper does research on the problem that the effect of acidizing fracturing is poor and the amount of hydrochloric acid is large in the geothermal well of carbonate rock in Tianjin, China. The acidizing reagent formula is improved to achieve the purpose of increasing production and saving reagents. The acidizing formula and construction project were tested in a geothermal well in Jinghai district, Tianjin. After acidizing, the production quantity of geothermal well is increased by 12 times. The acidizing effect of the new acidizing program and formula was more than 3 times higher than traditional acidizing program, and the amount of hydrochloric acid was saved by more than half.