دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. a gas whose molecules are infinitely small and exert no force on each other. 2. a gas that obeys Boyles law and Joules law. Also called a perfect gas.

a theoretical gas that perfectly obeys PV=RT/m, where V is the specific volume, T is the absolute temperature, R is the universal gas constant, and m is the molecular weight.

n: an iron-black mineral of composition FeTiO3 or Feo�TiOx, with a specific gravity of about 4.67, sometimes used for increasing the density of oilwell cement slurries.

n: A dense mineral whose specific gravity is 4.67 g/cm3, composed of FeO·TiO2. Ilmenite is used as a weighting agent for cement and mud.

n: the increase in the weight in sucker rods in fluid plus the weight of the fluid, caused by the effects of inertia or acceleration. For example, if an increased pumping rate causes an inertial effect of 30% of the weight of the rods in fluid plus the weight of the fluid, the impulse factor will be 1.3.

n: a weight attached to the end of a gauge tape. The tape and bob are used to measure liquid height in a tank. The bob keeps the tape vertical so that an accurate reading can be obtained from the tape.

n: (SI) a system of units of measurement based on the metric system, adopted and described by the Eleventh General Conference on Weights and Measures. It provides an international standard of measurement to be followed when certain customary units, both US and metric, are eventually phased out of international trade operations. The symbol SI (Le Syste`me International dUnites) designates the system, which involves seven base units: (1) metre for length, (2) kilogram for mass, (3) second for time, (4) Celsius for temperature, (5) ampere for electric current, (6) candela for luminous intensity, and (7) mole for amount of substance. From these units, others are derived without introducing numerical factors.

n: a sleeve receptacle that has a fitted male element and pins that fit into milled Jshaped slots of the sleeve. The short sides of the J-slots provide a shoulder for supporting weight on the pins of the male element. When the male element is lowered and turned relative to the sleeve, the pins slide in the slot toward the long side of the J, which is open-ended. The pins may thus be raised out, releasing weight that may be supported by the sleeve. The releasing procedure is called unjaying the tool."

n: 1. an oil well pumping unit that is powered by an internal-combustion engine, electric motor, or rod line from a central power source. The walking beam of the pumping jack provides reciprocating motion to the pump rods of the well. See walking beam.2. a device that is manually operated to turn an engine over for starting. v: to raise or lift.

n: the fitting that hoist the weight and equipment.

v: 1. in drilling, to control a kick by taking suitable preventive measures (e.g., to shut in the well with the blowout preventers, circulate the kick out, and increase the weight of the drilling mud). 2. in production, to stop a well from producing oil and gas so that reconditioning of the well can proceed. Production is stopped by cir- culating a kill fluid into the hole.

v: To stop a well from flowing or having the ability to flow into the wellbore. Kill procedures typically involve circulating reservoir fluids out of the wellbore or pumping higher density mud into the wellbore, or both. In the case of an induced kick, where

a term used to describe various methods to stop flow from a well. Commonly pumping a kill weight fluid into a well to create an overbalance into the formation.

flow lines to the BOP stack, entering below the pipe rams, through which kill weight fluids can be pumped.

a pill with fluid loss control materials selected to stop losses in the well. A kill weight pill is a fluid with a density high enough to control the well.