formation pressure while drilling

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• 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

• Logging while drilling — (LWD) is a technique of measuring geologic formation properties in real time while drilling an oil well.DescriptionLogging while drilling, along with measurement while drilling systems provide wellbore directional surveys, petrophysical well logs …   Wikipedia

• Drilling fluid invasion — is a process that occurs in a well being drilled with higher wellbore pressure than formation pressure. The liquid component of the drilling fluid (known as the mud filtrate) continues to invade the porous and permeable formation until the solids …   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

• Drilling mud — In geotechnical engineering, drilling mud, also known as spud mud (when beginning the drilling process), is a drilling fluid used to drill boreholes into the earth. Often used while drilling oil and natural gas wells and on exploration drilling… …   Wikipedia

• Drilling rig — For a detailed diagram of a Petroleum drilling rig, see List of components of oil drilling rigs. Drilling rig preparing rock blasting …   Wikipedia

• Formation evaluation — In petroleum exploration and development, formation evaluation is used to determine the ability of a borehole to produce petroleum. Essentially, it is the process of recognizing a commercial well when you drill one .Modern rotary drilling usually …   Wikipedia

• 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

• Blowout (well drilling) — A blowout is the uncontrolled release of crude oil and/or natural gas from an oil well or gas well after pressure control systems have failed.[1] Prior to the advent of pressure control equipment in the 1920s, the uncontrolled release of oil and… …   Wikipedia

• Directional drilling — A horizontal directional drill in operation Directional drilling (or slant drilling) is the practice of drilling non vertical wells. It can be broken down into three main groups: Oilfield Directional Drilling, Utility Installation Directional… …   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