The flow rate, perforation radius and shot density are the key parameters influencing the pressure drop across gravel pack.

分析结果还表明，油井产量以及射孔孔径和孔密度是影响砾石层压降的重要因素。

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This complete downhole tool solution can be used in gravel or frac pack applications as well as any two-trip configuration, such as standalone screen type completions.

这种完井井下工具解决方案可被用于砾石充填或挤压充填完井，也可以用于其它任何需要两次下钻才能下入的完井方式，包括优质筛管完井等。

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Step one is to grout with low grouting pressure to fill the gravel pack interval and blocked the channels which relieves the grouting pressure in the shallow surrounding rock.

“一步”低压注浆充填壁后散体状碎石充填层，堵塞浅部围岩泄压通道；

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Hirvonen and Loeb both slowed dramatically on the first day's final stage in order to avoid being the first cars on the road on Saturday, when they anticipated loose gravel on the surface would slow the leader relative to the chasing pack.

CNN: Latvala victory ends Loeb's winning streak