求翻译：3）在石油钻井上的应用。预糊化淀粉具有抗温和耐高压的特性，世界用作石油钻井中泥浆的降失水剂，能有效地控制泥浆水分的流失，一般钻一口深油井需预糊化淀粉4-5t，浅油井需1.5-2t。是什么意思？

3) on the oil drilling. Pre-gelatinized starch, anti-moderate high pressure characteristics, the world as oil drilling mud fluid loss additive, and can effectively control the mud water loss, and generally drill a deep oil wells need to pre-gelatinized starch 4-5t, shallow wells in 1.5-2t.

3) in the oil drilling on the application. The mixture of starch is resistant to temperature and pressure of the nature, the world as oil drilling mud in the uptake, so that they can effectively control the mud water loss, the general drill a deep wells need to be pre-mixture, 4 - 5 T cornstarch, sh

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3) application in oil drilling. Of pre-gelatinized starch has a moderately high pressure-resistant characteristics of world as fluid loss additive of oil drilling mud, mud effectively control moisture loss, General drilling of deep wells required pre-gelatinized starch 4-5T, shallow wells to 1.5-2T.