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2. Pilot light - Wikipedia

   en.wikipedia.org/wiki/Pilot_light

   In natural gas furnaces, water heaters, and room heating systems, a safety cut-off switch is normally included so that the gas supply to the pilot and heating system is shut off by an electrically operated valve if the pilot light goes out. This cut-off switch usually detects the pilot light in one of several ways: A flame rectification device. [2]

3. Underreamer - Wikipedia

   en.wikipedia.org/wiki/Underreamer

   It can be positioned either above the drill bit or above a pilot assembly run inside the existing borehole. Numerous designs exist, in sizes varying from a couple of inches to above 40". It is typically used in hydrocarbon drilling operations, but also geothermal or water wells drilling.

4. Logging while drilling - Wikipedia

   en.wikipedia.org/wiki/Logging_while_drilling

   Logging while drilling (LWD) is a technique of conveying well logging tools into the well borehole downhole as part of the bottom hole assembly (BHA).. Although the terms Measurement while drilling (MWD) and LWD are related, within the context of this section, the term MWD refers to directional-drilling measurements, e.g., for decision support for the smooth operation of the drilling, while ...

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   The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

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   AOL latest headlines, entertainment, sports, articles for business, health and world news.

7. Woman arrested for allegedly trying to smuggle meth disguised ...

   www.aol.com/woman-arrested-allegedly-trying...

   A Canadian woman was arrested after trying to smuggle over 20 pounds of methamphetamine through a New Zealand airport, authorities said. The illicit drugs were disguised as Christmas presents, New ...

8. List of abbreviations in oil and gas exploration and production

   en.wikipedia.org/wiki/List_of_abbreviations_in...

   BHA – bottom hole assembly (toolstring on coiled tubing or drill pipe) BHC – BHC gamma ray log [clarification needed] BHCA – BHC acoustic log [clarification needed] BHCS – BHC sonic log [clarification needed] BHCT – bottomhole circulating temperature; BHKA – bottomhole kickoff assembly; BHL – borehole log; BHP – bottom hole pressure

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