Crimp it.
Crimp it.
Boy, I can think of an appropriate place to place those.
BINGO! I sent that tip to BP’s tip line just this morning—crimp the riser and inject a junk shot of appropriately sized shredded rubber and straw, followed up with bentonite and ultimately cement. By restricting debris flow with a mechanical obstruction such as this, the debris would clog up the riser and keep all of it from just flowing out of the holes.
Guess I should have sent it sooner, but I thought they’d have figured that out by now.