A pipe-cutting tool, which can be independently pumped down to cut a wellbore pipe or casing, is disclosed. When the tool is lowered into the wellbore, a pump down ring, included in the tool, remains flush with the inner surface of the pipe. To power the tool's descent, high-pressure fluid is pumped into the wellbore. On reaching the target location, a swellable sleeve included in the tool, on being exposed to fluid in the wellbore, expands to push against the inner surface of the pipe, lodges the tool at the location, and seals any fluid flow path bypassing the tool. Thereafter, high-pressure abrasive fluid is pumped through the tool to eject in the form of high-pressure abrasive fluid jets, which cut through the wellbore pipe at the target location.

A borehole is bored to a borehole target depth in a site and a geothermal heat exchanger is inserted into and then secured in the borehole at the desired depth. Once the heat exchanger has been secured in the borehole, the heat exchanger has a closed distal end and an open proximal end and has at least one fluid path between the closed distal end and the open proximal end, with installation fluid disposed in the fluid path(s). After securing the heat exchanger in the borehole and before excavation of a portion of the site immediately surrounding the borehole, the heat exchanger is temporarily sealed by installing, through the open proximal end, at least one respective internal seal in each fluid path. For each fluid path, the internal seal(s) will be disposed below a respective notional subgrade depth and excavation of the site immediately surrounding the borehole can proceed.

A pipe-cutting tool, which can be independently pumped down to cut a wellbore pipe or casing, is disclosed. When the tool is lowered into the wellbore, a pump down ring, included in the tool, remains flush with the inner surface of the pipe. To power the tool's descent, high-pressure fluid is pumped into the wellbore. On reaching the target location, a swellable sleeve included in the tool, on being exposed to fluid in the wellbore, expands to push against the inner surface of the pipe, lodges the tool at the location, and seals any fluid flow path bypassing the tool. Thereafter, high-pressure abrasive fluid is pumped through the tool to eject in the form of high-pressure abrasive fluid jets, which cut through the wellbore pipe at the target location.

An ultra-high pressure (UHP) cutting device for cutting an elongate body from outside the elongate body are disclosed herein. Embodiments of the UHP cutting device have a UHP tube with a top end and a bottom end opposite the top end, the UHP tube defining a lumen for receiving UHP fluid, a static mount for securing the cutting device to the elongate body, a rotatable mount rotatably connected to the static mount, a radially adjustable support member for adjusting a distance of the UHP tube to the elongate body, the radially adjustable support member being connected adjacent to the top end of the UHP tube and the rotatable mount, a drive in operational communication with the rotatable mount for rotating the rotatable mount during operation of the cutting device, and a cutter head in fluid communication with the UHP line. Related uses and methods are also disclosed herein.

An ultra-high pressure (UHP) cutting device for cutting an elongate body from outside the elongate body are disclosed herein. Embodiments of the UHP cutting device have a UHP tube with a top end and a bottom end opposite the top end, the UHP tube defining a lumen for receiving UHP fluid, a static mount for securing the cutting device to the elongate body, a rotatable mount rotatably connected to the static mount, a radially adjustable support member for adjusting a distance of the UHP tube to the elongate body, the radially adjustable support member being connected adjacent to the top end of the UHP tube and the rotatable mount, a drive in operational communication with the rotatable mount for rotating the rotatable mount during operation of the cutting device, and a cutter head in fluid communication with the UHP line. Related uses and methods are also disclosed herein.

A pipe slitter assembly for lead pipe. The slitter assembly is configured to be pulled by a cable which is disposed through several of the various components of the assembly. At the lead of the assembly is a slitter, having one and only one blade. The blade has an edge which is oriented at a right angle to the longitudinal axis of the cable. The edge is created by two adjoining walls meeting at an included angle of about 21 degrees. Behind the blade may be various adaptors, and an expander. The expander opens the slit pipe, such that a pipe puller may be used to pull a replacement pipe into the void created by the slitter assembly. The slit pipe may be removed, or left in the subsurface around the newly introduced replacement pipe.

A pipe slitter assembly for lead pipe. The slitter assembly is configured to be pulled by a cable which is disposed through several of the various components of the assembly. At the lead of the assembly is a slitter, having one and only one blade. The blade has an edge which is oriented at a right angle to the longitudinal axis of the cable. The edge is created by two adjoining walls meeting at an included angle of about 21 degrees. Behind the blade may be various adaptors, and an expander. The expander opens the slit pipe, such that a pipe puller may be used to pull a replacement pipe into the void created by the slitter assembly. The slit pipe may be removed, or left in the subsurface around the newly introduced replacement pipe.

A pipe slitter assembly for lead pipe. The slitter assembly is configured to be pulled by a cable which is disposed through several of the various components of the assembly. At the lead of the assembly is a slitter, having one and only one blade. The blade has an edge which is oriented at a right angle to the longitudinal axis of the cable. The edge is created by two adjoining walls meeting at an included angle of about 21 degrees. Behind the blade may be various adaptors, and an expander. The expander opens the slit pipe, such that a pipe puller may be used to pull a replacement pipe into the void created by the slitter assembly. The slit pipe may be removed or left in the subsurface around the newly introduced replacement pipe.

A pipe slitter assembly for lead pipe. The slitter assembly is configured to be pulled by a cable which is disposed through several of the various components of the assembly. At the lead of the assembly is a slitter, having one and only one blade. The blade has an edge which is oriented at a right angle to the longitudinal axis of the cable. The edge is created by two adjoining walls meeting at an included angle of about 21 degrees. Behind the blade may be various adaptors, and an expander. The expander opens the slit pipe, such that a pipe puller may be used to pull a replacement pipe into the void created by the slitter assembly. The slit pipe may be removed or left in the subsurface around the newly introduced replacement pipe.