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US 12,716,307 B2Granted
Gas driven wireline release tool
AssigneeDynaEnergetics Europe GmbH
InventorsChristian Eitschberger, Thilo Scharf, Gernot Uwe Burmeister
Life of this patent
Estimating the term…
Abstract
A wireline release tool may include a casing configured to couple to a wireline and a connector configured to couple to a tool string. The casing may have a first end, a second end, and a chamber therebetween, and the connector may be detachably attached to the second end of the casing. A gas generator may be disposed in the chamber and may be capable of generating gas pressure in the chamber sufficient to overcome a pressure differential between the chamber and the external wellbore environment and to detach the connector from the casing.
Claims17
A wireline release tool for use in a wellbore, comprising:
- a casing having a first end, a second end, and a longitudinally extending chamber extending between the first end and the second end;
- a first connector disposed at the first end and configured for attachment to a wireline;
- a second connector disposed at the second end and configured for attachment to a tool string;
- and
- a gas generator disposed in the chamber between the first connector and the second connector, the gas generator being configured to generate a threshold gas pressure in the chamber, the chamber being enclosed within the casing between the first connector and the second connector, wherein in response to the gas generator generating the threshold gas pressure in the chamber, the second connector and the attached tool string are configured to be physically separated from the first connector and the attached wireline;
- a fastener coupling the second connector to the second end of the casing;
- and
- an electrical signal feedthrough configured to pass an electrical signal from the surface via the wireline through the wireline release tool, wherein the first connector comprises a first bulkhead extending therethrough, and the second connector comprises a second bulkhead extending therethrough.
5 more elements
A wireline perforating gun string system, comprising:
- a wireline configured to convey electrical signals therethrough;
- a tool string configured to be received in a wellbore and operated via the wireline from a ground surface external to the wellbore;
- and
- a wireline release tool configured to be positioned between the wireline and the tool string, the wireline release tool including:
- a casing having a first end configured for attachment to the wireline, a second end, and a longitudinally extending chamber extending between the first end and the second end;
- a connector disposed at the second end of the casing and configured for attachment to the tool string;
- and
- a gas generator disposed in the chamber and configured to generate a threshold gas pressure in the chamber, wherein in response to the gas generator generating the threshold gas pressure in the chamber, the connector and the attached tool string are configured to be physically separated from the casing and the attached wireline;
- a fastener coupling the connector to the second end of the casing;
- a first bulkhead extending through the first end of the casing;
- and
- a second bulkhead extending through the connector.
9 more elements
A method of releasing a part of a wireline perforating gun string, the method comprising:
- transmitting an initiation signal from a ground surface of a wellbore through a wireline to a wireline release tool that is coupled between the wireline and a tool string located in the wellbore, the wireline release tool comprising:
- a casing having a first end, a second end, and a longitudinally extending chamber extending between the first end and the second end;
- a first connector disposed at the first end and configured for attachment to a wireline;
- a second connector disposed at the second end and configured for attachment to a tool string;
- and
- a gas generator disposed in the chamber between the first connector and the second connector, the gas generator being configured to generate a threshold gas pressure in the chamber, the chamber being enclosed within the casing between the first connector and the second connector, wherein in response to the gas generator generating the threshold gas pressure in the chamber, the second connector and the attached tool string are configured to be physically separated from the first connector and the attached wireline;
- a fastener coupling the second connector to the second end of the casing;
- and
- an electrical signal feedthrough configured to pass an electrical signal from the surface via the wireline through the wireline release tool, wherein the first connector comprises a first bulkhead extending therethrough, and the second connector comprises a second bulkhead extending therethrough;
- and
- generating a gas pressure in a chamber of the casing of the wireline release tool in response to the wireline release tool receiving the initiation signal, whereby the generated gas pressure in the chamber physically separates the first end of the casing and the wireline from the tool string;
- and
- deforming or breaking the as the second connector moves out of an initial position.
10 more elements
Dependencies are inferred from the claim text.