Steam drive small 'back' glyph pattern injection-production parameters optimization research

摘要

Jin 45 block of Liaohe oil field work with inverted nine-spot which has a low production-injection ratio of 3:1, but now it has a phenomenon of energy spillover. On the basis of that, design a small "back" glyph injection-production well pattern, this pattern has a higher production-injection ratio of 9:1. Petrel software makes geologic model, through the CMG numerical simulation software for steam huff and puff history matching, on the small back glyph pattern injection-production parameters optimization makes the 7.5 years of steam drive prediction. The results of the study show that: the little back glyph pattern in variable speed gas injection has the advantage of the high gas oil ratio and low production speed, more suitable for heavy oil steam drive development. It provides theoretical support for the steam drive of Jin 45 block of Liaohe oil field's expanding.