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Downhole High Power Laser Scanner Tool and Method

A scanner and laser technology, used in manufacturing tools, laser welding equipment, instruments, etc., can solve problems such as time-consuming and lack of accuracy

Active Publication Date: 2021-10-01
SAUDI ARABIAN OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method for cutting casing is to use milling techniques, which takes time and lacks accuracy

Method used

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  • Downhole High Power Laser Scanner Tool and Method
  • Downhole High Power Laser Scanner Tool and Method
  • Downhole High Power Laser Scanner Tool and Method

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[0058] Berea sandstone samples were obtained. A laser unit with a power of 2 kW was used. In the first and second runs, the ratio of master mirror to slave mirror was set to 1:1.1. Run time is 32 seconds. The first run gets Figure 4A the shape shown. The second run gets Figure 4B the shape shown. In the third run, set the ratio of master mirror to slave mirror to 1:2. Run time is 32 seconds. The third run is 32 seconds. The third run gets Figure 4C the shape shown.

[0059] Although the embodiments have been described in detail, it should be understood that the various changes, substitutions and alterations could be made herein without departing from the principle and scope. Accordingly, the scope of the embodiments should be determined by the appended claims and their proper legal equivalents.

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Abstract

A method for controlling the shape of an opening in a formation includes the steps of: emitting a laser beam from a fiber optic cable into a directional unit; focusing the laser beam in a focusing lens to produce a focused laser; beam collimation to produce a directional beam; directing the directional beam onto a motorized master, wherein the compact scanner further includes a motorized slave, wherein the motorized master includes a master mirror and a master motor, wherein the motorized slave includes a slave mirror and slave motors; operating a motorized master and a motorized slave to generate a controlled beam, where the controlled beam moves in a moving pattern; directing the controlled beam into the laser head; subliming the formation to create openings; and utilizing suction nozzles Extract dust and vapours.

Description

technical field [0001] The present application discloses devices and methods related to the use of well stimulation. In particular, the present application discloses devices and methods related to the use of lasers in downhole applications. Background technique [0002] Well stimulation processes generally refer to those processes that increase fluid communication between a formation and a wellbore. [0003] The perforation process creates a path from the formation through the layers surrounding the wellbore and into the wellbore. The layers surrounding the wellbore may include casing, liner, or cement sheath. Traditional perforating processes include the use of shaped charges, bullet perforation, and the use of high-pressure or sandblasting jets. Shaped charges, while effective, are not well controlled and can cause formation compaction, deformation and sanding. [0004] Cutting of the casing may be performed for the purpose of creating a sidetrack when a secondary well...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G01B11/24B23K26/382
CPCE21B41/0078E21B43/119E21B29/02G01B11/24E21B7/15G02B19/0009G02B19/0047G02B26/105G02B27/0955G02B27/0994G02B27/30G02B6/262G02B6/32
Inventor 萨米·伊萨·巴塔尔赛
Owner SAUDI ARABIAN OIL CO
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