دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a resin polymerized from one of several sources: acrylonitrile, acrylic acid, methacrylic acid, etc.

n: 1. a hand tool that is powered pneumatically. 2. a chamber filled with compressed air, often used offshore in seismic exploration. As the gun is trailed behind a boat, air is released, making a low frequency popping noise, which penetrates the subsurface rock layers and is reflected by the layers. Sensitive hydrophones receive the reflections and transmit them to recording equipment on the boat.

seismic source for ocean seismic work.

n: an area over which an air mass rests and develops temperature and moisture characteristics typical of that location.

n: sandstone composed largely of feldspar grains and deriving from granitic source rocks.

A sandstone containing 25% or more of feldspar, usually derived from igneous rock.

the radiation intensity existing in the environment before a specific radiation source is considered.

rocks such as coal resulting from decomposition of animal or plant deposition.

n: a gas phase above a liquid phase in a vessel. It is placed there to protect the liquid from contamination, to reduce the hazard of detonation, or to pressure the liquid. The gas has a source outside of the vessel.

n: 1. a pressurised device capable of transferring liquid;sometimes used to transfer crude oil and water mixtures if pump agitation would create unwanted emulsions.2. a small tank in which liquids are accumulated and drained by applying gas or air pressure above the liquid level. Such a vessel is usually located below a pipeline or other equipment at a location where an outside power source is not convenient for removing the drained liquids. Sometimes referred to as a drip.

n: a device attached to the catshaft of the drawworks that is used as a power source for unscrewing drill pipe;usually located opposite the drillers side of the drawworks. See cathead.

n: The self-releasing cathead installed in the cat shaft of drawworks.

n: (BLM) an agency within the Department of the Interior (DOI) that is responsible for managing the nations public lands and resources in a combination of ways that best serves the needs of the American people. The resources on public lands under BLM authority include recreation;forestry;fish and wildlife;range;timber;minerals;water-shed;wilderness;and natural, scientific, and cultural values. Address: Dept. of the Interior, Main Interior Bldg.;Washington, DC 20240;Directors Office (202) 452- 5125.