A hydraulic oscillation tool with variable stage, small pressure drop and strong impact based on radio frequency identification is provided. It includes a conversion connector, a disc spring upper bracket, a disc spring housing, a disc spring group, a multi-stage piston shaft, an upper piston sleeve, a first radial sealing ring, a double-female-buckle piston sleeve, a double-male-buckle piston sleeve, a second radial sealing ring, a double-female-buckle lower piston sleeve, an end piston, an impacting connector, a power housing, a power shaft end cap, a high torque turbine, a power shaft, a lower connector, a rotating valve, a bearing supporting ring, and a turbine special bearing. The hydraulic oscillation tool realizes the low pressure drop and strong impact, and thus the problems that with the continuous increase of horizontal length, excessive pressure drop will make the annular pressure drop sharply, and drilling fluid circulation is difficult are solved.

A fluid pulse apparatus for down hole drilling having a turbine assembly actuated by a flow of drilling fluid. The apparatus has a narrowed fluid flow section that cooperates with a piston that moves between an open and a fluid flow restricting position. The apparatus has a turbine assembly that rotates in response to a flow of drilling fluid. The turbine apparatus has upper and lower cam surfaces that cooperate with fixed cam followers such that rotation of the turbine assembly and cam action between the cam surfaces and the fixed followers causes the turbine assembly to reciprocate axially. The piston is fixed to either of the upper or the lower cam surfaces such that as the turbine assembly reciprocates axially, the piston moves between the open and the flow restricting positions to create a pulsed fluid flow.

A fluid pulse apparatus for down hole drilling having a turbine assembly actuated by a flow of drilling fluid. The apparatus has a narrowed fluid flow section that cooperates with a piston that moves between an open and a fluid flow restricting position. The apparatus has a turbine assembly that rotates in response to a flow of drilling fluid. The turbine apparatus has upper and lower cam surfaces that cooperate with fixed cam followers such that rotation of the turbine assembly and cam action between the cam surfaces and the fixed followers causes the turbine assembly to reciprocate axially. The piston is fixed to either of the upper or the lower cam surfaces such that as the turbine assembly reciprocates axially, the piston moves between the open and the flow restricting positions to create a pulsed fluid flow.

This invention relates to a method, system and apparatus for cladding a surface of an articles subject to corrosive, erosive or abrasive wear, such as impact or grinding tools. The method includes providing a supply of stock material and feeding the stock material towards a portion of the surface of the article via a dedicated feed source. A dedicated heat source heats the fed stock material and the portion of the surface of the article such that the heated stock material and the portion of the surface at least partially melt. Upon removal of the heat, the molten feedstock and the surface portion form a bonded coating layer on at least a portion of the surface of the article, thereby protecting that part of the assembly against wear.

This invention relates to a method, system and apparatus for cladding a surface of an articles subject to corrosive, erosive or abrasive wear, such as impact or grinding tools. The method includes providing a supply of stock material and feeding the stock material towards a portion of the surface of the article via a dedicated feed source. A dedicated heat source heats the fed stock material and the portion of the surface of the article such that the heated stock material and the portion of the surface at least partially melt. Upon removal of the heat, the molten feedstock and the surface portion form a bonded coating layer on at least a portion of the surface of the article, thereby protecting that part of the assembly against wear.

Systems for drilling or tunneling include an assembly for accelerating a projectile into a region of geologic material. An interaction between the projectile and the geologic material extends a borehole and forms debris. The debris may be reduced in size by moving the debris to a crushing device. The reduced-size debris is then moved toward the surface using fluid movement. Water jets or other types of devices may be used to cut or deform a perimeter of a region of geologic material before the projectile is accelerated to control the shape of the borehole and the manner in which debris is broken from the geologic material.

Systems for drilling or tunneling include an assembly for accelerating a projectile into a region of geologic material. An interaction between the projectile and the geologic material extends a borehole and forms debris. The debris may be reduced in size by moving the debris to a crushing device. The reduced-size debris is then moved toward the surface using fluid movement. Water jets or other types of devices may be used to cut or deform a perimeter of a region of geologic material before the projectile is accelerated to control the shape of the borehole and the manner in which debris is broken from the geologic material.

A framework for a displacement hammer is configured for positioning the displacement hammer in a launch pit. The framework has two holding fixtures, each holding fixture having a clamp. The clamps and the holding fixtures can be moved independently from each other.

A framework for a displacement hammer is configured for positioning the displacement hammer in a launch pit. The framework has two holding fixtures, each holding fixture having a clamp. The clamps and the holding fixtures can be moved independently from each other.

Disclosed combination impact tool generates optimized linear hammering and vibrational impacts. Flow of pressurized fluid through an upper section of the tool generates linear hammering impacts, and flow of pressurized fluid through a lower section of the tool generates vibrational impacts. Flow of pressurized fluid through the lower section induces an eccentric arm to rotate and cause vibrational impacts. While frequency of hammering impacts can be controlled by varying pressure of the fluid flowing through the upper section, the frequency and amplitude of vibrational impacts can be controlled by varying weight of the eccentric arm and by varying pressure of the fluid flowing through lower section. Disclosed tool is particularly useful in drilling in shale and in fishing operations in a well-bore.