Abstract: The development of low permeability reservoir is closely related to fractures. Suitable arrangement of well patterns is the key of successful development of low permeability reservoir. This study presents a numerical simulation method to optimize the arrangements of well patterns like rhomb well pattern and rectangular well pattern and well-row spacing for Rang-l1 pilot area in Liangjing fractured extra low permeability reservoir of Jilin oilfield, determining suitable well patterns for it. This study is of instructive significance for development of the extra low permeabilty reservoir in China using proper well patterns.

Key words: low permeability reservoir, fracture, well pattern, numerical simulation