underbalanced
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Underbalanced drilling — Underbalanced drilling, or UBD, is a procedure used to drill oil and gas wells where the pressure in the wellbore is kept lower than the fluid pressure in the formation being drilled. As the well is being drilled, formation fluid flows into the… … Wikipedia
Precision Drilling — Infobox Company company name = Precision Drilling Trust company company type = Oilfield services company type = Public (NYSE|PDS, TSX|PD.UN) company slogan = foundation = 1969 location = Calgary, Alberta, Canada key people = CEO: Kevin A. Neveu… … Wikipedia
Measurement while drilling — Well logging Gamma ray logging Spontaneous potential logging Resistivity logging Density logging Sonic logging Caliper logging Mud logging LWD/MWD v · … Wikipedia
Drilling fluid — This article is about fluids used when drilling a well. For fluids used with drill bits during metal working, see cutting fluid. Driller pouring a foaming agent down the rod string on a drilling rig In geotechnical engineering, drilling fluid is… … Wikipedia
Gulf of Mexico — The Gulf of Mexico in 3D perspective Earth s oceans (World Ocean) Arctic Ocean Atlanti … Wikipedia
Petroleum — For other uses, see Petroleum (disambiguation). Proven world oil reserves, 2009 … Wikipedia
Persian Gulf — Khaleej redirects here. For other uses, see Khaleej (disambiguation). Persian Gulf … Wikipedia
Oil shale — For the scientific technical journal, see Oil Shale (journal). Not to be confused with Shale oil or Tight oil. Oil shale Sedimentary Rock Combustion of oil shale Composition … Wikipedia
Pipeline transport — An elevated section of the Alaska Pipeline … Wikipedia
Royal Dutch Shell — plc Type Public limited company Traded as LSE: … Wikipedia
