A case study of massive hydraulic fracturing in an ultra-deep gas well

A case study of hydraulic fracturing has been performed in Jing-70 gas well located in north China oil field with the depth larger than 4000 meters. The study used core test of stress sensitivity in performance prediction model and in determination of bottom flowing pressure. A long term conductivity is used in to a new developed gas reservoir model so as to perform optimization more scientifically. The well is hydraulically fractured successfully with 67 tons of proppant and sand to liquid ratio as high as 30%, which is highest record in ultra-deep gas wells in north China.