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  2. Shallow water drilling - Wikipedia

    en.wikipedia.org/wiki/Shallow_water_drilling

    Shallow water drilling is the process of oil and gas exploration and production in less than 150 meters (500 feet) of water. [ 1 ] Shallow water drilling differs from deepwater drilling in several key aspects.

  3. Oil well - Wikipedia

    en.wikipedia.org/wiki/Oil_well

    Onshore wells can be considerably cheaper, particularly if the field is at a shallow depth, where costs range from less than $4.9 million to $8.3 million, and the average completion costing $2.9 million to $5.6 million per well. [27]

  4. Extended reach drilling - Wikipedia

    en.wikipedia.org/wiki/Extended_Reach_Drilling

    What exactly determines a well to be "extended reach" varies over time and location with the development of technologies and of experiences. [ 2 ] On 24 April 2015 the world's longest borehole was drilled and completed from the Orlan Platform in the Chayvo Field, Sakhalin-1 Project with a total measured depth of 13,500 m (44,294 ft) and a ...

  5. Hydrocarbon exploration - Wikipedia

    en.wikipedia.org/wiki/Hydrocarbon_exploration

    Oil exploration is an expensive, high-risk operation. Offshore and remote area exploration is generally only undertaken by very large corporations or national governments. Typical shallow shelf oil wells (e.g. North Sea) cost US$10 – 30 million, while deep water wells can cost up to US$100 million plus. Hundreds of smaller companies search ...

  6. 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$650 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 ...

  7. Deepwater drilling - Wikipedia

    en.wikipedia.org/wiki/Deepwater_drilling

    Deepwater drilling, [1] or deep well drilling, [2] is the process of creating holes in the Earth's crust using a drilling rig for oil extraction under the deep sea. There are approximately 3400 deepwater wells in the Gulf of Mexico with depths greater than 150 meters.

  8. Well - Wikipedia

    en.wikipedia.org/wiki/Well

    A well excavated at the Hemedu excavation site was believed to have been built during the neolithic era. [7] The well was cased by four rows of logs with a square frame attached to them at the top of the well. 60 additional tile wells southwest of Beijing are also believed to have been built around 600 BC for drinking and irrigation. [7] [8]

  9. Shale gas - Wikipedia

    en.wikipedia.org/wiki/Shale_gas

    Shale gas was first extracted as a resource in Fredonia, New York, in 1821, [16] [17] in shallow, low-pressure fractures. Horizontal drilling began in the 1930s, and in 1947 a well was first fracked in the U.S. [3] Federal price controls on natural gas led to shortages in the 1970s. [18]

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