Abstract: A bottom hole assembly comprising a downhole tool known as a cutting tool is provided for use within a subterranean well for severing tubulars. The cutting tool comprises a fluid source, a gas-driven rotatable motor and a cutting head including one or more cutters. The fluid source supplies pressurized fluid and thereby energy to the gas-driven rotatable motor which is disposed to generate thrust to set the gas-driven rotatable motor in motion. The cutting head is coupled to the gas-driven rotatable motor and rotates while cutting the tubular. The cutting tool can be deployed in a subterranean well by a variety of deployment methods, and the pressurized fluid may be supplied from a surface system, generated inside the cutting tool or bottom hole assembly, or input within the cutting tool or bottom hole assembly prior to deployment. The invention further relates to associated methods.

Abstract: Systems and methods are disclosed that enable efficient well completion operations and provide the ability of flushing the wellbore before, during and after a fracturing or treatment operation, such that a resettable plug and associated bottom hole assembly is not trapped or buried by fluids and particulates in the hole and the sealing element of the resettable plug is not damaged. Systems and methods which mitigate and prevent accumulation of fluids and particulates above a resettable plug are also provided. Systems and methods for delivering pressurized fluid to a subterranean formation are also disclosed.

Abstract: A bottom hole assembly comprising a downhole tool known as a cutting tool is provided for use within a subterranean well for severing tubulars. The cutting tool comprises a fluid source, a gas-driven rotatable motor and a cutting head including one or more cutters. The fluid source supplies pressurized fluid and thereby energy to the gas-driven rotatable motor which is disposed to generate thrust to set the gas-driven rotatable motor in motion. The cutting head is coupled to the gas-driven rotatable motor and rotates while cutting the tubular. The cutting tool can be deployed in a subterranean well by a variety of deployment methods, and the pressurized fluid may be supplied from a surface system, generated inside the cutting tool or bottom hole assembly, or input within the cutting tool or bottom hole assembly prior to deployment. The invention further relates to associated methods.

Abstract: A system and method are disclosed which enables the downhole provision of fluid to downhole tools that require fluid for pressurization. The system is prefilled with fluid at surface, is modular in design with a first module delivering fluid to second module and may additionally be mounted below the downhole tools requiring the fluid. Methods are disclosed which utilize the system in a bottom hole assembly during downhole operations for isolating segments of a borehole.

Abstract: Systems and methods are disclosed that enable efficient well completion operations and provide the ability of flushing the wellbore before, during and after a fracturing or treatment operation, such that a resettable plug and associated bottom hole assembly is not trapped or buried by fluids and particulates in the hole and the sealing element of the resettable plug is not damaged. Systems and methods which mitigate and prevent accumulation of fluids and particulates above a resettable plug are also provided. Systems and methods for delivering pressurized fluid to a subterranean formation are also disclosed.

Abstract: Systems and methods are disclosed that enable flushing the wellbore before, during and after a fracturing or treatment operation, such that a resettable plug is not trapped or buried by fluids and particulates in the hole and the sealing element of the resettable plug is not damaged. Systems and methods which mitigate and prevent accumulation of fluids and particulates above a resettable plug are also provided. A system and method for delivering pressurized fluid to a subterranean formation is also disclosed.

Abstract: Systems and methods are disclosed that enable flushing the wellbore before, during and after a fracturing or treatment operation, such that a resettable plug is not trapped or buried by fluids and particulates in the hole and the sealing element of the resettable plug is not damaged. Systems and methods which mitigate and prevent accumulation of fluids and particulates above a resettable plug are also provided. A system and method for delivering pressurized fluid to a subterranean formation is also disclosed.