The tube type Johnson's base tube has an intensity of emsemble only 2-3% lower compared to the casing / standard oil tube, so it has a sufficient emsenble intensity to withstand the compression of strata. Even if there is a partial deformation, the slits of the compressed part do not increase, and the reliability of resisting the sands is high.
- More choice: the customer can choose the screened tube of the outer layer and the base tube made of stainless steel, duplex stainless steel or carbon steel, and the tubes can also made of materials according to his actual demands.
- High density of slits, high density of slits with low flow resistance, favorable to raise the production of oil and gas.
5.Good technology, capable of producing high efficiency, low cost and large scale production.
6.Capable of changing specifications to customer order.
