دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Refers to the core sample that is carried to the surface by drill fluid in drilling.

n: Schlumberger wireline tool that can recover up 90 core samples per trip. An explosive charge fires a hollow bullet into the formation, which is attached to the tool with wires. When the tool is moved, the bullet and sample are pulled out of the formation.

n: The process that Record the data of drill fluid, drill speed, core sample and gas surveying in order to know the formation in the deepening of well.

n: Press the cylindrical core sample put between the teeterboards of compression testing machine with axial force till breakdown. Records the alternation value of stress and deflection and draw the curve and requires compressive resistance of the rock.

n: The hydraulic pressure applying around cylindrical core sample in conventional triaxial test.

various earth forces acting on the formation. Includes overburden.

n: laboratory analysis of a core sample to determine porosity, penneability, lithology, fluid content, angle of dip, geological age, and probable productivity of the formation.

n: Refers to the analysis of core in laboratory in order to confirm porosity, permeability, fluid saturation, dip, geologic period, lithology and production capacity of formation.

lab work on a core sample that may yield permeability, porosity, pore size distribution, grain size, density, etc.

n: a tubular device, usually from 10 to 60 feet (3 to 18 metres) long, run at the bottom of the drill pipe in place of a bit and used to cut a core sample.

n: A special tool installed at the bottom of the drill string to cut and retain a core sample that is then recovered when the string is pulled out of the hole.

a barrel in the drilling BHA with a coring head designed to receive a rock core cut as part of core sampling operations.

n: 1. a small portion of a formation obtained by using a core bit in an existing wellbore. See core bit. 2. a spot sample of the contents of an oil or oil product storage tank usually obtained with a thief, or core sampler, at a given height in the tank.

n: The rock sample whose diameter is from 50mm to 100mm ,acquired from bottom hole when core drilling.

n: a device that uses a solvent to reflux, or flow back over, a sample to clean it. Such a device extracts oil or salt-laden water efficiently without harming the core samples.

n: a device used for removing moisture from substances. For drying core samples, the desiccator is a container with a bottom section holding moisture-absorbing chemicals and a top section in which the sample is placed.