The causes are presented as follows: packer unloading pressure, formation damage, oil tool plugging, formation voidage, the worst formation physical properties and the effect from vicinage wells.
地层污染或工具堵塞;地层欠压;地层物性极差;邻井影响等。
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Since 2015 corporate packers gross margin has ballooned from average of 100-200 a head to well over 1,000 ahead while cattle producers go out of business and consumers pay double or even triple at the meat counter.
自2015年以来,企业包装工的毛利率从平均每头100-200
元飙升至远超每头1000
元,而养牛商纷纷倒闭,消费者在肉类柜台上花了两倍甚至三倍的钱。


学英语4 

学英语5 There was a man here last month; he knew a formula he wanted to sell me, 'sight unseen'; but he was in such a hurry I got suspicious, and I found he'd managed to steal it, working for the big packers in their glue-works.
上个月这里有一个人;他知道他想卖给我的公式,“看不见的”;但他太着急了,我起了疑心,我发现他设法偷了它,为大型包装商在他们的胶水厂工作。