问题
问答题 简答题
试说明压裂设备的作用.
答案
参考答案：
是利用压裂车将压裂液提高压力后挤入地层，使其在井底生产层压开新的裂缝或扩展原始裂缝，并通过混砂车将支撑剂按一定的比例和压裂液混合供给压裂车，使其成为携砂液进入地层，充填压开的裂缝，形成高渗透率区域，从而提高油井的产量和注水井的注入量。
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试说明压裂设备的作用.
参考答案：
是利用压裂车将压裂液提高压力后挤入地层，使其在井底生产层压开新的裂缝或扩展原始裂缝，并通过混砂车将支撑剂按一定的比例和压裂液混合供给压裂车，使其成为携砂液进入地层，充填压开的裂缝，形成高渗透率区域，从而提高油井的产量和注水井的注入量。
通读下面短文，掌握其大意，然后在各题所给的四个选项（A、B、C和D）中选出一个最佳选项。 At a day care centre in Texas, Jessica McClure was playing outside. Jessica’s mother,____worked at the day care centre, was watching her. Suddenly Jessica____ and disappeared. Jessica’s mother cried and ran to her. The well in the yard was only eight inches across, and a rock always____it.But children had moved the rock.__ __ Jessica fell, she fell right into the well. Jessica’s mother ran to a phone and called 911 for ____.Men from the fire department arrived. They ____that Jessica was about 20 feet down in the well. Then they told Jessica’s parents their____. “We can’t go down into the well”they said,” It’s so small. So we are going to dig a hole ______well.We’ll dig down about 20 feet. Then we’ll dig a tunnel(通道) across to Jessica. When we reach her, we’ll bring her through the tunnel. Then we’ll bring her up through our____.” The men began to dig the hole on a Wednesday morning. Two days later, on Friday morning, they were____digging.And Jessica McClure was still in the well. All over the world people waited for news of Jessica. They read about her in newspapers and watched her rescue(营救）on TV.Everyone___ the little girl in the well. At 8:00 p.m. On Friday, the men____ reached Jessica and brought her up from the well. Then doctors rushed her to the hospital. Jessica was badly injured but she was still____.A doctor at the hospital said, “Jessica is lucky she is very____.She’s not going to remember this very well.” Maybe Jessica will not remember her days in the well. But her parents, her rescuers, and many other people around the world will not forget____. After Jessica’s rescue, one of the rescuers made a metal cover for the well. On the cover he wrote, “To Jessica, with love from all of us.”
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