Seismic pipe joint

A pipe joint arrangement, comprising:

• a first pipe comprising a main body having a first diameter, an end portion, and a first pipe wall thickness;
• a second pipe comprising an end portion;
• the end portion of the first pipe being welded to the end portion of the second pipe to form a pipe joint and to seal the pipe joint between the first pipe and the second pipe;
• the first pipe comprising an outwardly-extending, buckle-inducing deformation that is spaced apart from the pipe joint in an upstream direction;
• wherein a crest height of the buckle-inducing deformation is 50% to 500% of the first pipe wall thickness;
• wherein a contour of the buckle-inducing deformation is symmetric about a longitudinal axis of the first pipe, and is curved from the buckle-inducing deformation to a regular exterior surface of the main body of the first pipe having the first diameter;
• and
• wherein the buckle-inducing deformation is configured to ensure that buckling occurs at the preselected location of the buckle-inducing deformation of the first pipe when the pipe joint arrangement is subjected to a geohazard event.

A butt-welded pipe joint, comprising:

• a first steel pipe comprising a first pipe end and a first pipe wall thickness;
• a second steel pipe comprising a second pipe end;
• the first pipe end of the first steel pipe being coupled to the second pipe end of the second steel pipe at the butt-welded pipe joint;
• the first steel pipe comprising an outwardly-extending, buckle-inducing deformation that is spaced apart from the weld by 2 inches to 10 inches;
• and
• wherein a crest height of the deformation is 50% to 500% of the first pipe wall thickness.