Invention Grant
- Patent Title: Downhole optical communication
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Application No.: US15024308Application Date: 2013-11-01
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Publication No.: US10294778B2Publication Date: 2019-05-21
- Inventor: David A Barfoot , John L. Maida, Jr. , Etienne M. Samson
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: Chamberlain Hrdlicka
- International Application: PCT/US2013/068133 WO 20131101
- International Announcement: WO2015/065479 WO 20150507
- Main IPC: E21B47/12
- IPC: E21B47/12 ; H04B10/25 ; H04B10/516 ; H04B10/2587

Abstract:
A method of optical communication in a well can include launching light having substantially coherent phase into an optical waveguide extending in a wellbore, modulating light having substantially coherent phase in the wellbore, and receiving the modulated light transmitted via the same optical waveguide. A well system can include at least one optical waveguide extending in a wellbore, and a downhole optical modulator which modulates light transmitted via the optical waveguide, the optical modulator comprising a potassium titanyl phosphate crystal. Another method of optical communication in a well can include launching light into an optical waveguide extending in a wellbore, the light launched into the optical waveguide having information modulated thereon using a carrier, modulating light in the wellbore, the modulating comprising modulating information using a subcarrier of the carrier, and transmitting the light modulated in the wellbore via the same optical waveguide.
Public/Granted literature
- US20160208603A1 Downhole Optical Communication Public/Granted day:2016-07-21
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