Typical Structure and Application of Downhole Sand Jet Fracturing Tools

For low permeability horizontal wells,sand jet fracturing is an effective stimulation technique which combines the advantages hydraulic jetting and hydraulic fracturing,and can be used for orientated perforation without mechanical packer.This paper introduces sand jet fracturing's system structure,technique and features.This paper focused typical sand jet fracturing used in foreign countries and introduced in detail the development of jet structure and connection and its application procedures.The application of two typical sand jet fracturing tools was introduced.A typical domestic sand jet fracturing tool is introduced.The basic structure of jet was introduced.The field applications indicate that sand jet fracturing is effective in improving production.Finally it suggested that jet abrasion reduction and parameter optimization should be investigated for future research.