The Key Reservoir Fracturing Transformation Technology and Development Trend about the Shale Gas

Shale gas,the new abnormal energy at home and abroad,can be used as an important complement of conventional energy sources.It is very important in the strategy in the current situation of energy shortage in the world.Chinese shale gas with tremendous resources potential but in infancy,although it is lag far behind the commercial exploitation of North America,has got great attention from the Country on exploration and development to relieve the energy shortage effectively.The key to the efficient development in shale gas lies in the reservoir of horizontal wells fracturing transformation,which is one of major difficulties in our shale gas industry now.This paper compared the key technology and suitable conditions of multilevel fracturing,clean-water fracturing,synchronous fracturing,hydropower spray fracturing,repeat fracturing,CO2 and N2 foam fracturing,sewing nets fracturing in the current reservoir fracturing reform.It contrasts the quality effect of kinds of fracturing fluid system including the fracturing water used in gliding,compound fracture fluid,foam and also the kinds of additives.This paper also summarizes the applicable scope of the common fracture monitoring technology including the underground micro earthquake,the inclined meter,the near wellbore direct fracture monitoring and the distributed voice sensors.This paper predicts the future trend of development to the high diverting capacity of fracturing and supercritical CO2 development technology.