Orthogonal Parameters Optimization Design for Injection and Production Herringbone Well in Steam Stimulated Heavy Oil Reservoir

Herringbone wells can effectively increase the exposed area of oil layer,increase reservoir producing degree,and extend the steam swept volume,ultimately to enhance oil recovery.The throughput result of steam stimulation is mainly depended on injection and production parameters.This paper studies the effects of the six injection-production parameters including steam quality,steam injection rate,steam injection pressure,soak time,cyclic steam injection volume and the maximum lifting rate,and deal with the interaction among steam quality,steam injection rate and steam injection pressure.By using visual analysis and variance analysis on the test results,the optimal combination of injection-production parameters are obtained,and Sorted by the various factors based on the impact on the cumulative oil steam ratio.Research results show that interaction is not significant.The results of orthogonal numerical test can provide a theoretical guidance for herringbone wells injection-production parameter analysis optimization of steam stimulation in the field,and also have some practical significance.