颗粒无收的几率还是很小的。
Traditional vertical drilling, 成功率 80%.
近些年又发明一种 horizontal drilling, 成功率 >99%.
一般你的钱会分散投到几十口井,降低风险。
颗粒无收的几率还是很小的。
Traditional vertical drilling, 成功率 80%.
近些年又发明一种 horizontal drilling, 成功率 >99%.
一般你的钱会分散投到几十口井,降低风险。
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