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2. 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.

3. Resistivity logging - Wikipedia

   en.wikipedia.org/wiki/Resistivity_logging

   Resistivity logging is used in mineral exploration (for example for exploration for iron and copper ore bodies), geological exploration (deep geological disposal, geothermal wells), and water-well drilling. It is an indispensable tool for formation evaluation in oil- and gas-well drilling.

4. Well logging - Wikipedia

   en.wikipedia.org/wiki/Well_logging

   Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole.The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs).

5. 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 ...

6. Hydrogeology - Wikipedia

   en.wikipedia.org/wiki/Hydrogeology

   Expected yield of the well; Any prior drilling into the aquifer [23] There are five main areas to be considered when planning and constructing a new water well, along with the factors above. They are: Aquifer Suitability "Well Design Considerations; Well Drilling Methods; Well Screen Design and Development; Well Testing" [24]

7. Gamma ray logging - Wikipedia

   en.wikipedia.org/wiki/Gamma_ray_logging

   It is a wireline logging method used in mining, mineral exploration, water-well drilling, for formation evaluation in oil and gas well drilling and for other related purposes. [1] Different types of rock emit different amounts and different spectra of natural gamma radiation.

8. Well - Wikipedia

   en.wikipedia.org/wiki/Well

   Driven wells can be created in unconsolidated material with a well hole structure, which consists of a hardened drive point and a screen of perforated pipe, after which a pump is installed to collect the water. Deeper wells can be excavated by hand drilling methods or machine drilling, using a bit in a borehole. Drilled wells are usually cased ...

9. Well kill - Wikipedia

   en.wikipedia.org/wiki/Well_kill

   This is the most common method of a contingency well kill. If there is a sudden need to kill a well quickly, without the time for rigging up for circulation, the more blunt instrument of bullheading may be used. This involves simply pumping the kill fluid directly down the well bore, forcing the well bore fluids back into the reservoir. This ...