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2. US rig count up four as prices rebound - AOL

   www.aol.com/us-rig-count-four-prices-010200985.html

   Feb. 9—The rig count in the Permian Basin was up two this week, the latest count Friday by Baker Hughes shows, with 313 rigs active in the region. A year ago, 352 rigs were active in the region.

3. US rig count up five as prices slide - AOL

   www.aol.com/us-rig-count-five-prices-010200745.html

   Feb. 23—The rig count in the Permian Basin was up two this week, the latest count Friday by Baker Hughes shows, with 314 rigs active in the region. A year ago, 353 rigs were active in the region.

4. US rig count down one as prices drop - AOL

   www.aol.com/news/us-rig-count-down-one-000200285...

   Oct. 18—The rig count in the Permian Basin was unchanged this week, the latest count Friday by Baker Hughes shows, with 304 rigs active in the region. A year ago, 312 rigs were active in the region.

5. Borehole mining - Wikipedia

   en.wikipedia.org/wiki/Borehole_mining

   Borehole Mining (BHM) is a remote operated method of extraction (mining) of mineral resources through boreholes based on in-situ conversion of ores into a mobile form (slurry) by means of high pressure water jetting (hydraulicking). This process is carried-out from a land surface, open pit floor, underground mine or floating vessel through pre ...

6. Drilling rig - Wikipedia

   en.wikipedia.org/wiki/Drilling_rig

   An automated drill rig (ADR) is an automated full-sized walking land-based drill rig that drills long lateral sections in horizontal wells for the oil and gas industry. [8] ADRs are agile rigs that can move from pad to pad to new well sites faster than other full-sized drilling rigs. Each rig costs about $25 million.

7. Baptist well drilling - Wikipedia

   en.wikipedia.org/wiki/Baptist_well_drilling

   Baptist well drilling diagram in Spanish. Baptist well drilling is a very simple, manual method to drill water wells. The Baptist drilling rig can be built in any ordinary arc welding workshop and materials for a basic version costs about 150 US dollars (2006 prices). In suitable conditions, boreholes over 100 m deep have been drilled with this ...

8. Rate of penetration - Wikipedia

   en.wikipedia.org/wiki/Rate_of_penetration

   In the drilling industry, the rate of penetration (ROP), also known as penetration rate or drill rate, is the speed at which a drill bit breaks the rock under it to deepen the borehole. It is normally measured in feet per minute or meters per hour, but sometimes it is expressed in minutes per foot.

9. US rig count up four as prices continue to climb - AOL

   www.aol.com/news/us-rig-count-four-prices...

   Jul. 5—The rig count in the Permian Basin was unchanged this week, the latest count Friday by Baker Hughes shows, with 305 rigs active in the region. A year ago, 342 rigs were active in the region.