The main reason of casing failure in most oilfields is the plastic flow in salt rock, gypsolyte and shale due to creep.
我国大部分油田套管损坏的原因主要是岩盐层、膏岩层、泥岩层等由于蠕变产生的塑性流动而挤坏套管的。
With high quality shale as raw material, the products are extruded by hard plastic vacuum technology and sintered in tunnel kiln by fuel gas with stable high temperature.
产品采用优质页岩为原料，经硬塑真空挤压成型，在隧道窑中用燃气恒定高温烧结而成。
With high quality shale as raw material, the products are extruded by hard plastic vacuum technology and sintered in tunnel kiln by fuel gas with stable high temperature.
产品采用优质页岩为原料，经硬塑真空挤压成型，在隧道窑中用燃气恒定高温烧结而成。
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