دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: detailed information obtained from earth vibration produced naturally or artificially (as in geophysical prospecting).

n: The ways be used to detect the formation pressure by the different velocity of anthropic seismic wave in the formation.

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: 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: the study of earth vibrations.

n: once the drawworks receives power from either the compound or electric motors, the type of transmission that allows the driller to select how the power is distributed (torque! speed combinations) to various components of the drawworks. The drawworks on both mechanical-drive and electric-drive rigs have a selective transmission.

n: a type of pipe-laying vessel with a submerged pontoon hull and an elevated work area. Semi-submersible lay vessels remain relatively steady in high seas and are used in areas where conditions are expected to be continually rough.

n: a diving life-support system in which the gas is partially vented and the remainder is recycled, purified, and reoxygenated.

n: the part of a measuring device that is responsive to the absolute value or change in a physical quantity, such as temperature, pressure flow rate, pH, light, or sound. It converts that change into an input signal for an information-gathering system.

n: a cylindrical or spherical vessel used to isolate the components in mixed streams of fluids. See oil and gas separator.

a production treating vessel designed to facilitate the separation of gas, oil, and/or water from a produced fluid stream