دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. an extra support placed under the middle of racked pipe to keep the pipe from sagging. 2. a relatively narrow splinter of a rock formation that is stratigraphically disjointed. interrupts the consistency of another formation. and makes drilling that formation less predictable. A shale formation. for example. may be broken by a stringer of sandstone.

n: in pipeline construction. The process of delivering and distributing line pipe where and when it is needed on the right-of- way. Stringjng also includes the delivery of joints of special wall thickness and pipe grade to specific locations. such as road crossings. where heavy wall thickness may be specified by the contract or by regulations. Pipe is strung so that the movement of livestock and vehicles is not impeded.

the act of threading the drilling line through the pulleys or sheaves of the traveling block and the crown block. One line is connected to the derrick and the other to the winch or hoisting drum.

removing light hydrocarbons (C2+) from the gas before sale.

v: 1. to pull rods and tubing from a well at the same time-for example, when the pump is stuck. Tubing must be shipped over the rods a joint at a time, and the exposed sucker rod is then backed off and removed. 2. to move the drill stem, tubing, and other tools into or out of the hole with the well closed in. If the weight of the pipe is sufficient to overcome the upward force of well pressure, then the pipe can be shipped in. Compare snub.

n: ship charts are sometimes used in lieu of the circular chart for recording gas flow through an orifice meter.

a perforating gun where the charges are mounted on the strip. The strip is recovered after firing.

a recovery method, or less frequently, a wire installation method using pipe.

v: 1. to remove the drill stem from the hole while the blowout preventers are closed. 2. to pull the drill stem and the washover pipe out of the hole at the same time.

n: a processed gas from which liquefied hydrocarbons have been removed.