The Description Of The New Fracture In Re-fracturing

Hydraulic fracturing technology is for the stripper wells to provide more capacity and an important means of recovery, but after the hydraulic fracturing of oil and gas wells, in the production process for a variety of reasons may lead to hydraulic fracture failure, it is necessary for them to carry out refracturing, have become increasing its output to ensure stable oil field, the key means of enhancing economic efficiency. In the course of repeated fracturing stress due to the change in formation of the new formation of cracks can open up new oil and gas flow Road, a greater extent of the reservoir to improve the scope and effective conductivity, in the form of repeated fracturing of the new cracks analysis is related to the effect of repeated fracturing an important link.Based on repeated fracturing process induced by the stress field in the system, have been near the bottom of the distribution of stress field in a simple mathematical model, and based on this, the new cracks redirect and by creating new cracks in the mechanism, the best time for refracturing, the new law extends crack fracture length and characteristics issue further explored. Srtipper wells for the production and to the development of late has been provided a strong theoretical basis.