borehole en
81David Deming — Deming during testimony before the United States Senate, 2006. Born …
82Density logging — Well logging Gamma ray logging Spontaneous potential logging Resistivity logging Density logging Sonic logging Caliper logging Mud logging LWD/MWD v · …
83Formation evaluation gamma ray — In the field of formation evaluation, gamma ray log records natural radioactivity emission of formation. Measurement of natural emission of gamma rays in oil and gas wells are particularly helpful because shales and sandstones typically have… …
84Spontaneous potential — In the field of formation evaluation, spontaneous potential (SP) is a naturally occurring electric potential difference in the Earth, measured by an electrode in a borehole relative to a fixed reference electrode on the surface. SP was first… …
85Water well — Village pump redirects here. For information on Wikipedia project related discussions see Wikipedia:Village pump. Water well at the Wald monastery in Germany. A water well is an excavation or structure created in the ground by digging, driving,… …
86Measured depth — (a) is an imaginary line representing the True vertical depth, while line (b) is the borehole itself, and its length is called the measured depth. In the oil industry measured depth (commonly shortened to MD), is the length of the borehole, line… …
87Deviation survey — A Deviation survey[1], more generally known in the oil industry as simply a survey , is the measurement of a borehole s departure from the vertical, measured in degrees (°). When a well plan dictates the drilling of a straight borehole, surveys… …
88explosive — explosively, adv. explosiveness, n. /ik sploh siv/, adj. 1. tending or serving to explode: an explosive temper; Nitroglycerin is an explosive substance. 2. pertaining to or of the nature of an explosion: explosive violence. 3. likely to lead to… …
89tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
90Downhole heat exchanger — Bottom end of a Downhole heat exchanger …
