دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a certificate signed by vessel representatives acknowledging the amount of cargo that they intend to load. In general, most product cargoes have a tolerance based on supplier, receiver, or vessel capabilities. Each party involved with the loading agrees to the quantity to be loaded.

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.

n: the amount of pressure that the casing seat can take without fracturing. It is calculated from the height and volume of the kick in the well.

n: after overflow and shut in, the maximum difference the fluid density in the hole from the equivalent density that converted by casing allowable pressure and volume pressure in the holebore unless it happens overflow.

n: a device to enable the adjusting of a meter register to indicate true volume within acceptable tolerance.

n: a device made up in the casing string into which the bottom of the tubing string is placed. or landed.

n: a close tolerance bore at the top of a liner;may be used to stab in with a seal assembly, e.g. aspart of a monobore completion.

A polished bore, typical in a packer to accept the seal assembly on the end of tubing.

n: the amount of tolerance allowed when a device, such as a bearing, is pressed into a machined receptacle.

a rod pump with extremely loose tolerances (an loose seals) that may be temporarily run in a well to pump fluid that contains sand. Used for clean-ups after a fracture treatment.

n: the capability of a meter or flow-measuring device to operate between the minimum and maximum flow range within an acceptable tolerance. Generally expressed as the ratio of maximum flow to minimum flow.

n: 1. a part of a LACT unit that removes foreign particles from the crude. which might disrupt the operation of closetolerance moving parts. 2. a device placed upstream of a meter to remove foreign material from the stream that might damage the meter or interfere with its operation. The strainer element is generally coarser than a filter designed to remove solid contaminants.

n: the range of variation permitted in maintaining a specific dimension in machining a part. For example, a shaft measurement could be 2.000 inches +0.001 (50 millimetres +0.025). This means that any measurement from 1.999 inches to 2.001 inches (49.975 millimetres to 50.025 millimetres) would be acceptable.