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2. 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 ...

3. Drill cuttings - Wikipedia

   en.wikipedia.org/wiki/Drill_cuttings

   Drill cuttings can be separated from liquid drilling fluid by shale shakers, by centrifuges, or by cyclone separators, the latter also being effective for air drilling. In cable-tool drilling, the drill cuttings are periodically bailed out of the bottom of the hole. In auger drilling, cuttings are carried to the surface on the auger flights.

4. Extended reach drilling - Wikipedia

   en.wikipedia.org/wiki/Extended_Reach_Drilling

   The aims of ERD are: a) to reach a larger area from one surface drilling location, and b) to keep a well in a reservoir for a longer distance in order to maximize its productivity and drainage capability. Today's challenges in ERD are hole cleaning, managing the mechanical loads on the drill string and downhole pressure, and cost. [1]

5. Drilling Down Into Bakken Well Costs - AOL

   www.aol.com/news/2013-05-31-drilling-down-into...

   The Bakken is a notoriously tough area for producers to drill, which is why the play has some of the highest well completion costs in the U.S. Producers can spend $10 million or more to drill a ...

6. Well drilling - Wikipedia

   en.wikipedia.org/wiki/Well_drilling

   Well drilling is the process of drilling a hole in the ground for the extraction of a natural resource such as ground water, brine, natural gas, or petroleum, for the injection of a fluid from surface to a subsurface reservoir or for subsurface formations evaluation or monitoring.

7. Borehole - Wikipedia

   en.wikipedia.org/wiki/Borehole

   A water resources borehole into the chalk aquifer under the North Downs, England at Albury. Engineers and environmental consultants use the term borehole to collectively describe all of the various types of holes drilled as part of a geotechnical investigation or environmental site assessment (a so-called Phase II ESA).