Anchor system for imparting a rotational motion in a cutting apparatus
First Claim
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1. An anchor assembly for a downhole cutting apparatus, wherein the anchor assembly comprises:
- an anchor body configured to attach to the downhole cutting apparatus, wherein the downhole cutting apparatus is configured to discharge a cutting fluid for perforating or cutting a conduit within a wellbore;
one or more channels extending longitudinally and circumferentially along the surface of the anchor body to form at least one flow path for a portion of the cutting fluid, wherein the at least one flow path imparts a rotational motion in the downhole cutting apparatus when the portion of the cutting fluid discharged by the downhole cutting apparatus flows through or along the at least one flow path formed by the one or more channels.
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Abstract
Systems and methods usable in conduit cutting operations are disclosed. Specifically, an anchor assembly is configured to be attached to a cutting apparatus and to equalize the upward and downward forces on the cutting apparatus during performance of the cutting operation. In addition, the anchor assembly is configured to impart a rotational motion in the cutting apparatus to produce a clean and complete horizontal cut of the conduit at a desired location.
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Citations
24 Claims
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1. An anchor assembly for a downhole cutting apparatus, wherein the anchor assembly comprises:
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an anchor body configured to attach to the downhole cutting apparatus, wherein the downhole cutting apparatus is configured to discharge a cutting fluid for perforating or cutting a conduit within a wellbore; one or more channels extending longitudinally and circumferentially along the surface of the anchor body to form at least one flow path for a portion of the cutting fluid, wherein the at least one flow path imparts a rotational motion in the downhole cutting apparatus when the portion of the cutting fluid discharged by the downhole cutting apparatus flows through or along the at least one flow path formed by the one or more channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cutting assembly, comprising:
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a cutting apparatus comprising one or more nozzles configured to discharge a cutting fluid toward a conduit within a wellbore, wherein the discharged cutting fluid perforates or cuts the conduit; and an anchor assembly connected to the cutting apparatus, wherein the anchor assembly comprises one or more channels forming at least one flow path, wherein a portion of the discharged cutting fluid flows through and along the at least one flow path to impart a rotational motion in the cutting apparatus, wherein the rotation motion in the cutting apparatus forms a circumferential cut or perforation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for perforating or cutting a conduit within a wellbore, comprising:
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providing an anchor assembly comprising one or more channels extending longitudinally and circumferentially along the surface of the anchor assembly to form at least one flow path; connecting a cutting apparatus comprising one or more nozzles to the anchor assembly to create a cutting assembly; deploying the cutting assembly into the conduit; and actuating the cutting apparatus to discharge a cutting fluid, wherein the one or more nozzles direct the discharged cutting fluid toward the conduit, and wherein a portion of the discharged cutting fluid flows through or along the at least one flow path to impart a rotational motion to the cutting apparatus to form a circumferential perforation or cut in the conduit. - View Dependent Claims (21, 22, 23, 24)
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Specification