Casing down to use cement cementing,it and the tubing,drill pipe is different,can not be reused,a one-time consumption of materials.Therefore,the casing of the total consumption of more than 70% of the wells.Casing according to the use can be divided into catheter,surface casing,casing technology and oil casing.Some results are removed in response to a notice of local law requirement.For more information,please see here.12345Next
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