دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the inside annulus;tubing-by-production casing annulus. (Note, there may be regional differences in the A, B, C annulus designations and some are reversed. Inside annuli (IA) and outside annuli (OA) are more universally descriptive.)

n: production of formation fluids through the production casing annulus.

an outside annulus, one out from the A annulus, usually production casing x production casing or surface casing. (Note, there may be regional differences in the A, B, C annulus designations)

an outside annulus, next out from the B annulus, usually production casing x production casing or surface casing. (Note, there may be regional differences in the A, B, C annulus designations)

expanding pipe installed in production casing or tubing to seal perforation holes or leaks caused by corrosion or erosion. Can be metal or plastic.

n: a single well that produces from two separate formations at the same time. Production from each zone is segregated by running two tubing strings with packers inside the single string of production casing, or by ruunign one tubing string with a packer through one zone while the other is produced through the annulus. In a miniaturised dual completion, two separate 4.5-inch (11.4-centimetre) or smaller casing strings are run and cemented in the same wellbore.

n: a completion method in which two hydrocarbon reservoirs with different pressure in the same well



two pay zones in the same well that produce up independent flow paths in the same well.

n: a decision taken to exercise or not to exercise an option to participate in the completion attempt on a well, including the costs of running completion production casing and all related completion costs, The decision is made when the operator is ready to run casing and complete the well and so ratifies the party owning the election.

n: a string of casing sets in the borehole to keep the hole from caving and to steal off troublesome formations.

often a casing string or liner run to isolate a zone between the surface casing and the final production casing.

n: the string of casing set in a well after the surface casing but before production casing is set to keep the hole from caving and to seal off troublesome formations. In deep wells, one or more intermediate strings may be required. Sometimes called protection casing.

n: A length of pipe used below the surface casing string, but before the production casing is run, to isolate one or more zones of the openhole to enable deepening of the well. There may be several intermediate casing strings. Depending on well conditions, t

n: also called protection casing or technical casing, it is refer to the casing that between the surface casing and production casing, which can content the limitation of the complex layer and the drilling technic.