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2. Borehole - Wikipedia

   en.wikipedia.org/wiki/Borehole

   Two borehole diggers manually digging a borehole. Especially in developing countries many boreholes are stull dug by hand. The digging begins with manual labor using basic tools such as shovels, picks, and crowbars. Workers excavate the soil layer by layer, often using a circular motion to create a well-shaped hole.

3. Well drilling - Wikipedia

   en.wikipedia.org/wiki/Well_drilling

   Tricone rock bit. 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.

4. Borehole mining - Wikipedia

   en.wikipedia.org/wiki/Borehole_mining

   Borehole mining tool and technology principle schematic. 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 ...

5. Completion (oil and gas wells) - Wikipedia

   en.wikipedia.org/wiki/Completion_(oil_and_gas_wells)

   Well completion is the process of making a well ready for production (or injection) after drilling operations. This principally involves preparing the bottom of the hole to the required specifications, running in the production tubing and its associated down hole tools as well as perforating and stimulating as required.

6. Oil well - Wikipedia

   en.wikipedia.org/wiki/Oil_well

   After drilling and casing the well, it must be 'completed'. Completion is the process in which the well is prepared to produce oil or gas. In a cased-hole completion, small perforations are made in the portion of the casing across the production zone, to provide a path for the oil to flow from the surrounding rock into the production tubing. In ...

7. Boring (earth) - Wikipedia

   en.wikipedia.org/wiki/Boring_(earth)

   Boring is drilling a hole, tunnel, or well in the Earth. It is used for various applications in geology, agriculture, hydrology, civil engineering, and mineral exploration. Today, most Earth drilling serves one of the following purposes: return samples of the soil and/or rock through which the drill passes; access rocks from which material can ...

8. Well - Wikipedia

   en.wikipedia.org/wiki/Well

   A dug well in a village in Faryab Province, Afghanistan The difference between a well and a cistern is in the source of the water: a cistern collects rainwater where a well draws from groundwater. A well is an excavation or structure created on the earth by digging, driving, or drilling to access liquid resources, usually water.

9. Drilling engineering - Wikipedia

   en.wikipedia.org/wiki/Drilling_engineering

   Drilling engineering is a subset of petroleum engineering. [1] Drilling engineers design and implement procedures to drill wells as safely and economically as possible. [1] They work closely with the drilling contractor, service contractors, and compliance personnel, as well as with geologists and other technical specialists.