Non-explosive downhole perforating and cutting tools
AssigneeSchlumberger Technology Corporation
InventorsHongfa Huang, Delbert Taylor
Life of this patent
Estimating the term…
Abstract
A non-explosive downhole tool for creating openings in tubulars and or earthen formations includes a carrier holding a non-explosive material, such as thermate, a head connected with the carrier and having a port to eject a product of the ignited material from the head and a communication path extending from the material to the port and a moveable member in a closed position blocking the communication path and in an open position opening the communication path.
Claims13
A non-explosive downhole cutting or perforation tool for creating openings in tubulars and or earthen formations, the tool comprising:
- a carrier holding a thermate material;
- an igniter in operational contact with the thermate material;
- a head connected with the carrier by a unitary diverter having a shaft, the head having a 360 degree port to eject a product produced from ignition of the thermate material and a communication path extending from the thermate material through the diverter to the port;
- a base attached to a lower end of the shaft;
- and
- a movable member disposed between the base and the diverter in a closed position blocking the communication path and in an open position opening the communication path, wherein the movable member slides on the shaft from the closed position to the open position in response to ignition of the thermate material.
A method of creating an opening in a tubular, comprising:
- disposing a non-explosive cutting or perforation tool in a tubular in a wellbore, the tool comprising a thermate material, a movable member, a diverter having a shaft, a base attached to a lower end of the shaft, and a 360 degree ejection port:
- igniting the thermate material:
- sliding the movable member on the shaft between the diverter and the base in response to a product produced by the ignited thermate material thereby opening the port;
- and
- directing the product through the port and onto the tubular.
A non-explosive downhole tubular cutter, the cutter comprising:
- a carrier body holding a thermate material:
- a head connected to the carrier body and comprising a unitary diverter in direct contact with the carrier, the diverter having a shaft, a base connected to a lower end of the shaft, and a body axially moveable on the shaft between the diverter section and the base from a closed position in contact with the diverter to an open position forming a 360 degree port between the axially separated body and diverter section in response to ignition of the thermate material;
- and
- a channel extending through the diverter from the thermate material to the port.
Dependencies are inferred from the claim text.