With continuing an oilfield development, its formation pressure tends to decline along with the horizontal fractures being closed, the permeability drawdown and the productivity being damaged.
随着油田开发的进行，地层压力逐渐下降，水平裂缝趋于闭合，渗透率大幅下降，严重影响了生产能力。
2
The offshore oilfield development requires high single well productivity, then can get better economic benefit.
海上油田开发要求单井具有较高的产能，才能获得较好的经济效益。
3
Reservoir fractures are relatively well developed in Niuxintuo oilfield which control the productivity of oil well directly.