Abstract: A work string and method of performing a downhole operation is disclosed. The work string includes a first tool having a first ball seat configured to activate when a first activation pressure is applied to a plug seated at the first ball seat, and a second tool having a second ball seat configured to activate when a second activation pressure is applied to the plug when seated at the second ball seat, wherein the first activation pressure is different than the second activation pressure. A plug is dropped through a string in a wellbore. The first activation pressure is applied when the plug is at the first tool to activate the first tool. The second activation pressure is applied when the plug is at the second tool to activate the second tool.

Abstract: A work string and method of performing a downhole operation is disclosed. The work string includes a first tool having a first ball seat configured to activate when a first activation pressure is applied to a plug seated at the first ball seat, and a second tool having a second ball seat configured to activate when a second activation pressure is applied to the plug when seated at the second ball seat, wherein the first activation pressure is different than the second activation pressure. A plug is dropped through a string in a wellbore. The first activation pressure is applied when the plug is at the first tool to activate the first tool. The second activation pressure is applied when the plug is at the second tool to activate the second tool.

Abstract: A bypass valve and method of utilizing a bypass valve located inside of a tubular or mill that allows one set of equipment to operate, operating a second tool on demand, and then providing a fluid pathway for at least a third device to operate. The bypass valve has a through bore with the restriction. Fluid flows through the restriction at a first rate that is sufficient to operate a measuring while drilling tool. The fluid flow is then increased to a second rate where the restriction causes an increase in pressure within the bypass valve. The increase in pressure allows a packer typically below the bypass valve to be set. Fluid flow is then increased to a third rate causing a further increase in pressure within the bypass valve due to the restriction.