Abstract: There is a need for a flexible, insulated jacket that can be used to substantially enclose a pipe junction, then inject a cooling substance into the jacket, and thereby freeze or substantially freeze the contents of the junction. Industries conveying fluids, including fluids such as hydrocarbons, using pipes and valves would benefit from such a jacket. The jacket is shaped to substantially enclose a pipe junction connecting two or more pipes. The jacket includes a flexible insulated body having fasteners. The jacket has an open position and a closed position. The body substantially encloses the pipe junction in the closed position. The jacket further includes at least two fluid injection valves communicated through the jacket body.

Abstract: A hot tapping assembly for hot tapping into a multiple string configuration to obtain access to the production tubing without removing outer layers of casing, the hot tapping assembly including a hot tapping clamp and a hot tapping seal assembly. In one embodiment, the hot tapping clamp includes a clamp plate having an access bore. The clamp plate can engage with an outer surface of a pipe. In another embodiment, the hot tapping seal assembly can engage with the hot tapping clamp, and includes a hot tapping tubular that can engage with the outer surface of the pipe through the hot tapping clamp's access bore.

Abstract: A hot tapping assembly for hot tapping into a multiple string configuration to obtain access to the production tubing without removing outer layers of casing, the hot tapping assembly including a hot tapping clamp and a hot tapping seal assembly. In one embodiment, the hot tapping clamp includes a clamp plate having an access bore. The clamp plate can engage with an outer surface of a pipe. In another embodiment, the hot tapping seal assembly can engage with the hot tapping clamp, and includes a hot tapping tubular that can engage with the outer surface of the pipe through the hot tapping clamp's access bore.

Abstract: A mud saver valve (MSVIII), positionable at the bottom of the drill string, above the bit, which includes an elongated body portion; portion of the valve housing a compressible spring a pressure; a valve mechanism of a plunger and seat, the plunger moveable between open and closed positions within the valve by concentric actuator pistons; while in the closed position, drilling fluid cannot pass through the valve; when a combination of static and pump pressure exceeds the setting pressure of the spring, the plunger will be unseated by the concentric actuator pistons to the open position, at which time drilling fluid is allowed to through the valve; wherein when the valve is normally closed, as long as the fluid column pressure is less than the setting pressure, the valve remains closed, and allows the drill string to be disconnected and a section of pipe can be added without the fluid draining from the drill column above the bit, and thus saving fluid.

Abstract: A hot tapping assembly for hot tapping into a multiple string configuration to obtain access to the production tubing without removing outer layers of casing, the hot tapping assembly including a hot tapping clamp and a hot tapping seal assembly. In one embodiment, the hot tapping clamp includes a clamp plate having an access bore. The clamp plate can engage with an outer surface of a pipe. In another embodiment, the hot tapping seal assembly can engage with the hot tapping clamp, and includes a hot tapping tubular that can engage with the outer surface of the pipe through the hot tapping clamp's access bore.

Abstract: A hot tapping assembly for hot tapping into a multiple string configuration to obtain access to the production tubing without removing outer layers of casing, the hot tapping assembly including a hot tapping clamp and a hot tapping seal assembly. In one embodiment, the hot tapping clamp includes a clamp plate having an access bore. The clamp plate can engage with an outer surface of a pipe. In another embodiment, the hot tapping seal assembly can engage with the hot tapping clamp, and includes a hot tapping tubular that can engage with the outer surface of the pipe through the hot tapping clamp's access bore.

Abstract: A hot tapping assembly for hot tapping into a multiple string configuration to obtain access to the production tubing without removing outer layers of casing, the hot tapping assembly including a hot tapping clamp and a hot tapping seal assembly. In one embodiment, the hot tapping clamp includes a clamp plate having an access bore. The clamp plate can engage with an outer surface of a pipe. In another embodiment, the hot tapping seal assembly can engage with the hot tapping clamp, and includes a hot tapping tubular that can engage with the outer surface of the pipe through the hot tapping clamp's access bore.