Precautions for installation and construction of oil casing pipe
The gradient direction of the horizontal section during the installation of the API 5L PSL2 GR.B Oil Well Casing Pipe shall be determined based on the principle that it is convenient to drain water and air. During the butt joint of oil well casing pipe, it is not allowed to use the methods of strong butt joint, heating pipe, adding deflection pad or multi-layer pad to eliminate the defects such as gap, deflection, staggered joint or non concentricity on the end face of the joint. The oil paint, scale, rust, etc. on the groove of the oil casing or pipe fitting and the inner and outer wall within 10-15mm shall be removed before the butt joint, showing the metallic luster. The butt joint of the oil well casing pipe shall be straight, and the deformation of the welding angle shall be measured 200 mm away from the center of the joint.
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