Patent application number | Description | Published |
20100084024 | Method of Direct Hot Tapping Into A Multiple Production String Without Removing Outer Layers of Casing - A method of hot tapping into a multiple string configuration for obtaining access to the production tubing without removing outer layers of casing by providing a multiple casing string that includes at least an outer casing and an inner casing or production string; mounting a clamp assembly around the wall of the outer casing; hot tapping a small opening through the outer casing wall to capture any pressurized fluid through the opening; cutting first and second large openings through the wall of the outer casing to access the inner casing, each opening being approximately 180 degrees from the other opening; through the first opening, drilling a small hole through the wall of the inner casing to capture any pressurized fluid through the opening in the inner casing; and inserting an anvil through the second opening to contact and stabilize the wall of the inner casing to prevent the casing from moving while the casing is drilled. | 04-08-2010 |
20110240300 | MUD SAVER VALVE AND METHOD OF OPERATION OF SAME - A mud saver valve, 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 which is a sliding sleeve moveable between open and closed positions within the valve; 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 dome, the sleeve will be moved by actuation pistons to the open position, at which drilling fluid is allowed to through the valve. Also, 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 added without the fluid draining from the drill column above the bit, and thus saving fluid. | 10-06-2011 |
20130255794 | Method of Direct Hot Tapping Into A Multiple Production String Without Removing Outer Layers of Casing - A method of hot tapping into a multiple string configuration for obtaining access to the production tubing without removing outer layers of casing by providing a multiple casing string that includes at least an outer casing and an inner casing or production string; mounting a clamp assembly around the wall of the outer casing; hot tapping a small opening through the outer casing wall to capture any pressurized fluid through the opening; cutting first and second large openings through the wall of the outer casing to access the inner casing, each opening being approximately 180 degrees from the other opening; through the first opening, drilling a small hole through the wall of the inner casing to capture any pressurized fluid through the opening in the inner casing; and inserting an anvil through the second opening to contact and stabilize the wall of the inner casing to prevent the casing from moving while the casing is drilled. | 10-03-2013 |
20130306162 | Method of Direct Hot Tapping Into A Multiple Production String Without Removing Outer Layers of Casing - A method of hot tapping into a multiple string configuration for obtaining access to the production tubing without removing outer layers of casing by providing a multiple casing string that includes at least an outer casing and an inner casing or production string; mounting a clamp assembly around the wall of the outer casing; hot tapping a small opening through the outer casing wall to capture any pressurized fluid through the opening; cutting first and second large openings through the wall of the outer casing to access the inner casing, each opening being approximately 180 degrees from the other opening; through the first opening, drilling a small hole through the wall of the inner casing to capture any pressurized fluid through the opening in the inner casing; and inserting an anvil through the second opening to contact and stabilize the wall of the inner casing to prevent the casing from moving while the casing is drilled. | 11-21-2013 |
20140158218 | Method of Hot Tapping Into a Pipe - 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. | 06-12-2014 |
20140158222 | Hot Tapping Clamp Assembly - 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. | 06-12-2014 |
20140284112 | MUD SAVER VALVE AND METHOD OF OPERATION OF SAME - 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. | 09-25-2014 |