Abstract: A casing removal system includes a flow diversion valve. The flow diversion valve includes a flow switch that engages an upper end of an inner casing. When the flow switch engages the upper end of the inner casing, the flow diversion valve opens and at least a portion of the fluid flow through the casing removal system exhausts to the annulus. The remaining fluid flow below the flow diversion valve is insufficient to operate a mud motor that drives a casing cutter. In other embodiments, when the flow switch is not engaged with the inner wall of casing, the flow diversion valve prevents fluid flow to components that are downhole of the valve and when the flow switch is engaged with the inner wall of casing, the flow diversion valve allows for fluid flow to components that are downhole of the valve.

Abstract: A casing removal system includes a flow diversion valve. The flow diversion valve includes a flow switch that engages an upper end of an inner casing. When the flow switch engages the upper end of the inner casing, the flow diversion valve opens and at least a portion of the fluid flow through the casing removal system exhausts to the annulus. The remaining fluid flow below the flow diversion valve is insufficient to operate a mud motor that drives a casing cutter. In other embodiments, when the flow switch is not engaged with the inner wall of casing, the flow diversion valve prevents fluid flow to components that are downhole of the valve and when the flow switch is engaged with the inner wall of casing, the flow diversion valve allows for fluid flow to components that are downhole of the valve.

Abstract: A casing removal system includes a flow diversion valve. The flow diversion valve includes a flow switch that engages an upper end of an inner casing. When the flow switch engages the upper end of the inner casing, the flow diversion valve opens and at least a portion of the fluid flow through the casing removal system exhausts to the annulus. The remaining fluid flow below the flow diversion valve is insufficient to operate a mud motor that drives a casing cutter. In other embodiments, when the flow switch is not engaged with the inner wall of casing, the flow diversion valve prevents fluid flow to components that are downhole of the valve and when the flow switch is engaged with the inner wall of casing, the flow diversion valve allows for fluid flow to components that are downhole of the valve.

Abstract: A downhole tool includes a section mill, a bridge plug, and a connector releasably coupling the section mill to the bridge plug. A guide is coupled to the connector and maintains the section mill centered within a wellbore during sue of the section mill. A method for setting a bridge plug and cutting casing includes deploying a tool string downhole in a wellbore, with the tool string including a casing cutting tool releasably coupled to a bridge plug. The bridge plug is set within the wellbore and the casing cutting tool is released from the bridge plug. In the same trip during which the bride plug is set, the casing cutting tool is expanded and used to remove an axial section of casing while maintaining the casing cutting tool centered within the casing.

Abstract: A downhole tool may include a bridge plug releasably coupled to a casing cutting tool. The bridge plug may be set within a wellbore and the casing cutting tool may be used in a milling or perforating operation during a single downhole trip of the downhole tool. A method for using a downhole tool may include setting the bridge plug in a wellbore and performing a casing cutting operation during a same downhole trip. The casing cutting tool may be a section mill and a section milling operation may be performed before or after uncoupling the bridge plug from the section mill while downhole. The section milling operation may remove an entire portion of casing within a region of the wellbore for receiving a cement plug. The casing cutting too may be a perforation tool and perforating may be used to remove portions of casing.

Abstract: A downhole tool may include a bridge plug releasably coupled to a casing cutting tool. The bridge plug may be set within a wellbore and the casing cutting tool may be used in a milling or perforating operation during a single downhole trip of the downhole tool. A method for using a downhole tool may include setting the bridge plug in a wellbore and performing a casing cutting operation during a same downhole trip. The casing cutting tool may be a section mill and a section milling operation may be performed before or after uncoupling the bridge plug from the section mill while downhole. The section milling operation may remove an entire portion of casing within a region of the wellbore for receiving a cement plug. The casing cutting too may be a perforation tool and perforating may be used to remove portions of casing.