Frac and pack technology is both a effective stimulation and sand control treatment, and a new completion method in unstable crumbly formation and high permeability reservoir.

压裂充填工艺是中高渗透油气层和不稳定松软地层的有效增产、防砂措施，又是一种新的完井方法。

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Fracturing equipment includes pumping units, blenders, bulk handling equipment such as sand and frac fluid transports, and a manifold trailer, etc.

压裂设备包括泵机组、混砂车、散装运输设备(如砂子和压裂液运送设备)以及管汇拖车等。

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Demand for frac sand is rising as more energy companies explore unconventional oil deposits, but the supply hasn't kept up.

WSJ: Eight IPOs Line Up In U.S.

U.S. Silica specializes in commercial silica used in a variety of industries, the most prominent being "frac sand" to stimulate oil and gas recovery in formations such as shale.

WSJ: Eight IPOs Line Up In U.S.

If demand for frac sand continues to rise, and if the general economic recovery continues to result in increased demand from other industries, U.S. Silica expects prices to go even higher.

WSJ: Eight IPOs Line Up In U.S.