Fiber-safe single-run perforating gun
AssigneeHalliburton Energy Services, Inc.
InventorsHenry C. Bland, Timur Mukhtarov
Life of this patent
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Abstract
In general, in one aspect, embodiments relate to a method, that includes lowering a tool string down into a wellbore extending into a subterranean formation, where the tool string includes perforating charges, and one or more acoustic emitters, energizing the one or more acoustic emitters to form at least an acoustic signal while the tool string is being drawn up-hole, detecting the acoustic signal with a sensing cable disposed within the wellbore, determining an angular orientation of the tool string relative to the sensing cable based at least in part on the acoustic signal, and detonating at least one of the perforating charges when its firing direction is not directed at the one or more sensing cables.
Claims20
A method, comprising:
- lowering a tool string down into a wellbore extending into a subterranean formation, wherein the tool string comprises:
- perforating charges;
- and
- one or more acoustic emitters;
- energizing the one or more acoustic emitters to form at least an acoustic signal while the tool string is being drawn up-hole;
- detecting the acoustic signal with a sensing cable disposed within the wellbore;
- determining an angular orientation of the tool string relative to the sensing cable based at least in part on the acoustic signal;
- and
- detonating at least one of the perforating charges when its firing direction is not directed at the one or more sensing cables.
A tool string, comprising:
- a gun body;
- perforating charges disposed within the gun body;
- and
- one or more acoustic emitters, disposed within or on the tool string, configured to produce at least an acoustic signal detectable by a sensing cable behind a casing,
- wherein the one or more acoustic emitters comprise one or more sounding arms, and
- wherein the one or more sounding arms comprise at least one multi-faceted, acoustically-energizable wheel.
A system, comprising:
- a tool string comprising:
- a gun body;
- a perforating charge;
- and
- an acoustic emitter configured to produce an acoustic signal, wherein the acoustic emitter comprises a sounding arm, wherein the sounding arm comprises a multi-faceted, acoustically-energizable wheel;
- and
- one or more sensing cables configured to detect the acoustic signal.
Dependencies are inferred from the claim text.