2012•Drilling & Production TechnologyRequires access
OPTIMIZATION DESIGN METHOD OF OPEN HOLE HORIZONTAL WELL STAGED FRACTURING
Lizhi Wang, Ccdc Downhole
Open publisher page 1 citations
Abstract
The domestic fracturing tools were applied firstly in staged fracturing of Su 75-70-6H well with low permeability,low pressure and low abundance.After fracturing,the gas well production was 20×104m3/d,open-flow capacity was 316.2×104m3/d.The matching technologies of staged fracturing were formed by using domestic fracturing tools.Considering the open hole wall stress concentration and circumferential stress variation,the concept of open hole horizontal well two-way fracturing was put forward.Based on the two-way transformation theory and combining with the stress direction,the concept of single and double-zone sealing staged fracturing was proposed.Considering the control of permeability to the fracture flushflow radius,the amount of staged fracturing was optimized in different reservoir.Based on the fracture parameters,the optimization design method of open hole horizontal well staged fracturing was analyzed.The application results showed that the performance of domestic staged fracturing tool was reliable,formed staged fracturing theories were accurate and the optimal design method was effective.