PRESENT DEVELOPMENT AND PROSPECTING OF HYDRAULIC FRACTURING TECHNOLOGY

Over 50 years of development, hydraulic fracturing has become one of the important way of stimulation and a method for reservoir evaluation, and achieved great progressing on such aspects as fracture model, dynamic prediction, fracturing fluid, propant, fracturing equipment and application fields, etc. Hydraulic fracturing has been further improved and developed in recent years, mainly on overall optimum fracturing, repeated fracturing, large-scale fracturing, high sand fracturing, and CO2 foam fracturing, etc., and has been applied in the special well conditions such as slant well, horizontal well, deep and ultra-deep well, and slim hole. Domestically, this technology has approached the international advanced standard, especially on such aspects as design software, fracturing and acidizing material and field operation technology, etc. The suitable fracturing technology for different types of reservoir is presented, and the developing direction on novel fracturing material, testing technology, formation damage control and flow-back mechanism is also forecasted.