دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (slang) a person who prospects for oil, especially by using seismology. Also called doodlebugger. v: (slang) to explore for oil, especially by using seismic techniques in which explosive charges are detonated in shot holes to create shock waves (name taken from the resemblance of these explosions to the puffs of loose dirt thrown up by the doodlebug, or ant lion, when digging its funnel-shaped hole).

seismograph.

n: an instrument placed on the surface that .detects vibrations passing through the earths crust. It is used in conjunction with seismography. Geophones are often called jugs. See seismograph.

an instrument that detects vibrations passing through the earth’s crust.

n: (slang) the member of a seismograph crew who places the geophones.

a weak vibration of the ground that can be detected by seismographs and caused by wind, waves or human activity but not earthquakes.

abbr: seismograph;used in drilling reports.

adj: of or relating to an earthquake seismograph indicate the general characteror earth vibration, including those artificially induced.

an exploration technique that can find structures and potential reservoir traps by reflecting sound waves from the rock strata. [Seismic acquisition (2-D, 3-D, 4-D) – seismic data are used to map subsurface formations. A 2-D survey reveals a cross section

n: a device that detects vibrations in the earth. It is used in studying the earths interior and in prospecting for probable oil-bearing structures. Vibrations are created by discharging explosives in shallow boreholes, by striking the surface with a heavy blow, or by vibrating a heavy plate in contact with the ground. The type and velocity of the vibrations as recorded by the seismograph indicate the general characteristics of the section of earth through which the vibrations pass.

a device that records vibrations (natural or man-made) in the earth. With interpretation, the data can give information on buried strata.

v: 1. to explode nitroglycerine or other high explosives in a hole to shatter the rock and increase the flow of oil;now largely replaced by formation fracturing. 2. in seismographic work, to discharge explosives to create vibrations in the earths crust. See seismograph.

n: a hydraulically operated hammer used in obtaining a seismograph in oil exploration. It is mounted on a vehicle and, when dropped, creates shock waves in the subsurface formations, which are recorded and interpreted to reveal geological information.