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  2. Multilevel groundwater monitoring systems - Wikipedia

    en.wikipedia.org/wiki/Multilevel_groundwater...

    A MLS facilitates the collection of ground-water samples and measurement of hydraulic heads from many more discrete depths than can be obtained using typical well clusters or nests. A MLS facilitates the collection of subsurface head and chemical data over time, which is something that cannot be accomplished using "one-time" profiling tools ...

  3. Measurement while drilling - Wikipedia

    en.wikipedia.org/wiki/Measurement_while_drilling

    A drilling rig is used to create a borehole or well (also called a wellbore) in the earth's sub-surface, for example in order to extract natural resources such as gas or oil. During such drilling, data is acquired from the drilling rig sensors for a range of purposes such as: decision-support to monitor and manage the smooth operation of ...

  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. Leak detection - Wikipedia

    en.wikipedia.org/wiki/Leak_detection

    A leak appearing within an analytic region (a rule added to the camera) is immediately analyzed for its attributes, including thermal temperature, size, and behaviour (e.g. spraying, pooling, spilling). When a leak is determined to be valid based on set parameters, an alarm notification with leak video is generated and sent to a monitoring station.

  6. Drawdown (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Drawdown_(hydrology)

    Static level is the level of water in the well when no water is being removed from the well by pumping. [8] Water table is the upper level of the zone of saturation, an underground surface in which the soil or rock is permanently saturated with water. [9] Well yield is the volume of water per unit time that is produced by the well from pumping. [8]

  7. Wellhead - Wikipedia

    en.wikipedia.org/wiki/Wellhead

    When the well has been drilled, it is completed to provide an interface with the reservoir rock and a tubular conduit for the well fluids. The surface pressure control is provided by a Christmas tree, which is installed on top of the wellhead, with isolation valves and choke equipment to control the flow of well fluids during production.

  8. Groundwater recharge - Wikipedia

    en.wikipedia.org/wiki/Groundwater_recharge

    In 2007, on the recommendations of the International Water Management Institute, the Indian government allocated ₹ 1,800 crore (equivalent to ₹ 54 billion or US$630 million in 2023) to fund dug-well recharge projects (a dug-well is a wide, shallow well, often lined with concrete) in 100 districts within seven states where water stored in ...

  9. Permanent downhole gauge - Wikipedia

    en.wikipedia.org/wiki/Permanent_Downhole_Gauge

    A permanent downhole gauge (PDG) is a pressure and/or temperature gauge permanently installed in an oil or gas well. [1] These gauges are typically installed in the tubing in the well and can measure the tubing pressure, annulus pressure, or both.