Abstract: As a new well type, appearance of fish-bone well is now considerable concern for its high productivity nature. Its proper well placement is a crucial aspect in such a well application for oil-gas field development. With numerical simulation software, the uniform pattern of spacing for combination of fish-bone well with vertical well is numerically simulated. The influences of variety of fish-bone well types, branch angles, branch length, branch location on productivity, as well as the effects of different well patterns (five-spot, seven-spot and nine-spot patterns, etc.) on production performance are analyzed. This paper presents the selected principles for optimum branch orientation, angle and location of fish-bone well placement, and also, the selected method for injector placement orientation in these well patterns, which could be as a guide for design of such a well placement.

Key words: fish-bone well, well pattern, numerical simulation, feature