دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

adj: see wickered.

n pl: the quantity of butane extracted in a precessing plant for wich lease settlement is included in the settlement made for natural gasoline by virtue of the gasoline settlements being used on a higher vapour pressure natural gasoline actually extracted. Sometimes called free butane or excess butanes.

n: a pipe incorporating twice as many safety design factors as normally used.

n: a mechanism that is fitted into an overshot to grasp and retrieve fish from the borehole. The interior of a grapple is wickered to engage the fish. See basket grapple. spiral grapple.

n: the part of a catching tool (such as overshot or spear) that engages the fish.

a spring like device, resembling a interlocking finger puzzle that allows a round work piece to slide through the ID when in compression, but grips the work piece (or fish) when a tension load is applied. Common in overshot fishing devices.

n: commonly referred to as lime-base muds. These high-ph system contain most of the conventional fresh-water additives to wich saked lime contents vary from low to high.

n: the arc or portion of the earths equator intersected between the meridian of a given place and the prime meridian (at Greenwich, England) and expressed either in degrees or in time.

n: (NSWA) association of producers of wells that yield ten barrels or less of crude petroleum a day. Its official publication is National Stripper Well Survey. Address: 825 Petroleum Bldg.;Wichita Falls, TX 7630 I;(817) 766-3870.

n: the ratio between the hydraulic pressure required to open the preventer and the well pressure under the preventers packing device or ram.

n: the contrast that the pressure in hole with operation pressure of openning wick of blowout preventer when shut in.

the ratio of the pressure required to open the preventer to the pressure under the rams.

n: a unit of measure of the acid or alkaline condition of a substance. A neutral solution (such as pure water) has a pH of 7;acid solutions are less than 7;basic, or alkaline, solutions are more than 7. The pH scale is a logarithmic scale. A substance with a pH of 4 is more than twice as acid as a substance with a pH of 5. Similarly, a substance with a pH of 9 is more than twice as alkaline as a substance with a pH of 8.

n: a parameter used to measure the acidity or alkalinity of a substance.

n: thec rubber wick that seals the annular through seizing tightly the pipe in rotary blowout preventer.