# US 11,897,011 B2 · Hybrid descaling tool and methods

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- Number: US 11,897,011 B2
- Document ID: US11897011B2
- Status: Granted
- Kind: B2
- Application number: 17/649,490
- Filed: 2022-01-31
- Published: 2023-08-03
- Granted: 2024-02-13
- Earliest claimed: 2022-01-31
- Assignees: Saudi Arabian Oil Company
- Applicants: Saudi Arabian Oil Company
- Inventors: Sameeh Issa Batarseh; Wisam Assiri
- Web page: https://patentgrep.com/patent/US11897011B2

## CPC

- B08B 7/04: by a combination of operations
- B08B 7/0042: {by laser}
- B08B 9/043: moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B 9/0436: {provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets (B08B9/045, B08B9/047 take precedence)}
- B08B 9/045: the cleaning devices being rotated while moved {, e.g. flexible rotating shaft or "snake"}(B08B9/047 takes precedence)
- B08B 9/047: the cleaning devices having {internal} motors {, e.g. turbines} for powering cleaning tools
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL

## Abstract

A tool that removes a scale inside a pipe includes: a laser tool including a laser head to output a laser beam, and a robotic arm that is articulated and that is connected to the laser head. The robotic arm includes segments that are connected by flexible robotic arm joints to enable movement of the laser head in six degrees of freedom, and a control system to control the robotic arm to direct output of the laser beam. The tool also includes a drilling shaft attached to the robotic arm of the laser tool.

## Claims

### Claim 1

A tool that removes a scale inside a pipe, the tool comprising:
a laser tool comprising:
a laser head to output a laser beam;
a robotic arm that is articulated and that is connected to the laser head, the robotic arm comprising segments that are connected by flexible robotic arm joints to enable movement of the laser head in six degrees of freedom; and
a control system to control the robotic arm to direct output of the laser beam; and
a drilling shaft attached to the robotic arm of the laser tool,
wherein the drilling shaft comprises:
a first drilling shaft segment;
a second drilling shaft segment; and
a joint that transmits a rotating power of the drilling shaft between the first drilling shaft segment and the second drilling shaft segment.

### Claim 2 (depends on 1)

The tool according to claim 1, wherein the drilling shaft is configured for connection to a device for lowering the laser tool into a wellbore.

### Claim 3 (depends on 1)

The tool according to claim 1, wherein the drilling shaft comprises:
a hollow shaft that extends along an axis of the drilling shaft; and
a spiral vane disposed around the hollow shaft, wherein
the spiral vane transports a debris when the drilling shaft rotates around an axis of the hollow shaft.

### Claim 4 (depends on 1)

The tool according to claim 1, wherein
a first end of the first drilling shaft segment is attached to the robotic arm,
a second end of the first drilling shaft segment is attached to a first end of the joint, and
a first end of the second drilling shaft segment is attached to a second end of the joint.

### Claim 5 (depends on 4)

The tool according to claim 4, wherein the second drilling shaft segment rotates around an axis of the second drilling shaft segment together with the first drilling shaft segment.