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  2. Concretion - Wikipedia

    en.wikipedia.org/wiki/Concretion

    Concretions in Torysh, Western Kazakhstan Concretions with lens shape from island in Vltava river, Prague, Czech Republic Marlstone aggregate concretion, Sault Ste. Marie, Michigan, United States A concretion is a hard and compact mass formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary ...

  3. Concrete - Wikipedia

    en.wikipedia.org/wiki/Concrete

    A single concrete block, as used for construction. Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. . Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material

  4. Production fluid - Wikipedia

    en.wikipedia.org/wiki/Production_fluid

    Production fluid, or well fluid, is the fluid mixture of oil, gas and water in formation fluid that flows to the surface of an oil well from a reservoir. Its consistency and composition varies. Fluids may be described by a multitude of characteristics including:

  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. Well kill - Wikipedia

    en.wikipedia.org/wiki/Well_kill

    This is often the tidiest way of making a planned well kill. It involves pumping kill fluid down the 'A' annulus of the well, through a point of communication between it and the production tubing just above the production packer and up the tubing, displacing the lighter well bore fluids, which are allowed to flow to production.

  7. Formation fluid - Wikipedia

    en.wikipedia.org/wiki/Formation_fluid

    Formation fluid refers to the naturally occurring liquids and gases contained in geologic formations. [1] Fluids introduced during the drilling process are called drilling fluids. [2] Fluids in an oil or gas reservoir are called reservoir fluids. [1] The fluids flowing from the wellhead of an oil or gas well are called production fluids.

  8. Oil production plant - Wikipedia

    en.wikipedia.org/wiki/Oil_production_plant

    An oil production plant is a facility which processes production fluids from oil wells in order to separate out key components and prepare them for export. Typical oil well production fluids are a mixture of oil, gas and produced water. An oil production plant is distinct from an oil depot, which does not have processing facilities.

  9. Manganese nodule - Wikipedia

    en.wikipedia.org/wiki/Manganese_nodule

    Assessment of the changing paleoclimate conditions during soil evolution can be explored by analyzing the nodule's concretion structure when combined with dating techniques. [2] Manganese layers typically form at higher redox potentials compared to iron layers, but a period of rapid increase in redox potential can form a mixed layer. [2]