دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to immerse an iron or steel object in molten zinc to produce a coating of zinc-iron alloy on the object. This zinc- iron coating resists corrosion.

n: a permanent magnet meter for detecting weak electric current. It can be adapted with shunts or resistors to measure larger currents or voltage.

a sensitive ammeter

n: a type of radioactivity well log that records natural radioactivity around the wellbore. Shales generally pr0- duce higher levels of gamma radiation and can be detected and studied with the gamma ray tool. In holes where salty drilling fluids are used, electric logging tools are less effective than gamma ray tools. See radioactivity well logging.

Uses a scintillation crystal and a photomultiplier tube to measure naturally occurring and artificially induced gamma-ray radiation. The gamma-ray radiation is a signature of the formations in a well – very useful in depth control. Used in open hole or pi

n: a tubular, perforated device attached to the bottom of a sucker-rod pump that helps to prevent gas lock. The device works on the principle that gas, being lighter than oil, rises. As well fluids enter the anchor, gas breaks out of the fluid and exits from the anchor through perforations near the top. Remaining fluids enter the pump through a mosquito bill (a tube within the anchor),which has an opening near the bottom. In this way, all or most of the gas escapes before the fluids enter the pump.

a gas separation device, usually a perforated pipe section, in a beam lift well that helps break gas out of the liquids, preventing gas entry and resultant gas lock of the pump.

n: a device used to separate and identify gas compounds by their adhesion to different layers of a filtering medium such as clay or paper, sometimes indicated by colour changes in the medium.

the volume of reservoir gas resulting in one standard cubic foot.

n: a discrepancy between a transporters receipts and deliveries of natural gas for a shipper. Most pipelines require that shippers deliveries to the pipeline and receipts from the pipeline remain essentially in balance within certain tolerances, or the pipeline may assess charges or penalties until the imbalance is rectified.