Super Suckers
When you need more fluid velocity to pickup trapped or heavy debris, a super sucker is the ideal solution. It can be run with with a reverse junk basket or any open ended BHA that allows flow up the tubing. Simply run the burst disc and bar stop assembly to depth just above the debris and drop the bar. The U-tube effect of the fluid will create tremendous amounts of lift collecting heavy debris such as sand, cement and small-medium chunks of metal. If it's small enough to fit into the tubing, chances are the super sucker can pick it up.