دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

“shock” waves from an event (explosive, tectonic, impact, etc.) that travel through the earth and reflect off of subsurface structures (rocks) in the same manner as sound echos and water waves and ripples.

n: a method of geophysical prospecting using the generation, reflection, refraction detection, and analysis of sound waves in the earth.

n: an agreement that permits seismic exploration of land for a specified price per acre. The company gathering seismic information can, by the terms of the agreement, eventually lease selected acreage, again for an agreedupon price.

n: digital recording of the return to geophones of a shock wave emitted from the surface.

n: an exploration method in which strong low-frequency sound waves are generated on the surface or in the water to find subsurface rock structures that may contain hydrocarbons. The sound waves travel through the layers of the earths crust;however, at formation boundaries some of the waves are reflected back to the surface where sensitive detectors pick them up. Reflections from shallow formations arrive at the surface sooner than reflections from deep formations, and since the reflections are recorded, a record of the depth and configuration of the various formations can be generated. interpretation of the record can reveal possible hydrocarbon-bearing formations.

n: shock wave generated by an earthquake or.explosion.

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.

n: a type of electric AC motor used to transmit motion and position.