This paper uses net present value to improve the method for calculating economy rational well spacing density of matured oilfield considering every factor affecting the well spacing density.

• 通过综合考虑影响经济合理井网密度的各种因素,运用净现值等方法,对计算老油田经济合理井网密度以及经济极限井网密度的方法做了改进。