Petroleum Goodies: May 2011

Thursday, May 26, 2011

Petroleum Goodies: Absolute Permeability

Posted: 26 May 2011 10:00 AM PDT

Absolute Permeability: The way of measuring permeability, or capability to pass or transfer fluids through a rock, performed when a single fluid, or phase, exists in the rock. The expression most often used for permeability is k, that is calculated in units of darcies or millidarcies.

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Wednesday, May 25, 2011

Petroleum Goodies: Compressor

Compressor

Posted: 25 May 2011 10:00 AM PDT

Compressor: An equipment which enhances the pressure of air or natural gas. A compressor typically uses positive displacement to compress the gas to larger pressures so the gas can easily pass into pipelines and other equipments. Commonly used in production facilities.Similar Posts:

Tuesday, May 24, 2011

Petroleum Goodies: Damaged Zone

Damaged Zone

Posted: 24 May 2011 10:00 AM PDT

Damaged Zone: The local area around the wellbore which has been impaired through the drilling activity, normally due to mud or cement-filtrate intrusion. Near-wellbore impairment can substantially impact efficiency and is generally simpler to avoid compared to fix.

Even though typically present, a lightly damaged area around the wellbore can be bypassed by perforation channels to generate connecting conduits from the wellbore to the undamaged reservoir zone.

More serious cases of damage may need a matrix-acidizing treatment to regenerate the natural permeability, or a hydraulic fracturing solution to generate a new high-conductivity flow direction to the reservoir. Generally used in perforating, well completions.

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Monday, May 23, 2011

Petroleum Goodies: Underbalance

Underbalance

Posted: 23 May 2011 10:00 AM PDT

Underbalance: The sum of pressure applied on a formation exposed in a wellbore below the internal fluid pressure of that formation. When decent permeability and porosity present, formation fluids get into the wellbore. The drilling rate usually accelerates as an underbalanced situation is reached. Commonly used in drilling.

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Sunday, May 22, 2011

Petroleum Goodies: Xylene

Xylene

Posted: 22 May 2011 10:00 AM PDT

Xylene: An aromatic hydrocarbon compound that contains a benzene ring with two methyl side chains, formula C6H4(CH3)2. Xylene is a superb synthetic cleaning agent, particularly for aromatic solids like asphaltic materials. It is used like a solvent and emulsion crusher in workover operations to clean up reservoirs.

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Saturday, May 21, 2011

Petroleum Goodies: Gravity Converter

Gravity Converter

Posted: 21 May 2011 10:00 AM PDT

Convert Gravity

This tool is useful to convert gravity from and to different units. Enter gravity in known unit and then hit enter to calculate gravity in different units. Another handy tool from Easy Test.

File type: Executable in zipped folder.

Note: There is a file embedded within this post, please visit this post to download the file.

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Friday, May 20, 2011

Petroleum Goodies: Pressure Converter

Pressure Converter

Posted: 20 May 2011 10:00 AM PDT

Convert Pressure From and To Different Units

This tool is useful to convert pressure from and to different units. Available units are psi, bars, Kg/cm2, and KPa. Enter pressure in known unit and then hit enter to calculate pressure in different units. Another handy tool from Easy Test.

File type: Executable in zipped folder.

Note: There is a file embedded within this post, please visit this post to download the file.Similar Posts:

Thursday, May 19, 2011

Petroleum Goodies: Quartz

Quartz

Posted: 19 May 2011 10:00 AM PDT

Quartz: A numerous rock-forming mineral made up of silicon and oxygen, also known as silica. Quartz sand grains are a primary component of sandstone along with other clastic sedimentary rocks. Chemical formula of quartz is SiO2. Commonly used in geology.

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Wednesday, May 18, 2011

Petroleum Goodies: Tally

Tally

Posted: 18 May 2011 10:00 AM PDT

Tally: A record that contains information on tubulars which have been prepared for running, or that have been retrieved from the wellbore. Every tubing joint is marked and numbered and the corresponding length and other important details marked alongside. Commonly used in drilling.

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Tuesday, May 17, 2011

Petroleum Goodies: Pigging

Pigging

Posted: 17 May 2011 10:00 AM PDT

Pigging: The process of pushing a tool known as a pig through a pipeline for the purpose of removing or isolating fluids, and washing or examining the line. Commonly found in production testing.

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Monday, May 16, 2011

Petroleum Goodies: Reverse Fault

Reverse Fault

Posted: 16 May 2011 10:00 AM PDT

Reverse Fault: A type of fault created if the hanging wall fault block steps up alongside a fault surface relative to the footwall. This kind of movement can take place in places where the earth’s crust is compacted. A thrust fault, often called an overthrust if the displacement is especially great, is a reverse fault where the fault plane has a shallow dip, normally less than 45 deg. Commonly used in geology.

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Sunday, May 15, 2011

Petroleum Goodies: Normal Fault

Normal Fault

Posted: 15 May 2011 10:00 AM PDT

Normal Fault: A type of fault where the hanging wall shifts down compared to the footwall, and the fault surface dips steeply, typically from 50 to 90 deg.

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Saturday, May 14, 2011

Petroleum Goodies: Tail Pipe

Tail Pipe

Posted: 14 May 2011 10:00 AM PDT

Tail Pipe: The tubulars or strings and completion parts run below a production packer. The tail pipe can be part of a completion type for many reasons. It can provide a capability for plugs and other non permanent flow-control instruments, enhance downhole hydraulic characteristics, and give a suspension point for downhole gauges and also monitoring equipment. Commonly used in drilling and well completion.

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Friday, May 13, 2011

Petroleum Goodies: Water-Base Drilling Mud

Water-Base Drilling Mud

Posted: 13 May 2011 10:00 AM PDT

Water-Base Drilling Mud: A drilling fluid where water or seawater is the primary liquid phase and the wetting phase. Common types of water-base muds are seawater, salt water, fresh water, lime, silicate, and potassium. Commonly used in drilling.

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Thursday, May 12, 2011

Petroleum Goodies: X-ray Diffraction

X-ray Diffraction

Posted: 12 May 2011 10:00 AM PDT

X-ray Diffraction (XRD): A method for the semi quantitative mineralogical study of a sample of rock by measuring the diffraction peaks in X-rays diffracted by the sample. The position of the diffraction peaks is a measure of the length between discrete crystallographic diffracting planes within minerals, while their intensity indicates the quantity of the mineral. Commonly used in formation evaluation.

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Wednesday, May 11, 2011

Petroleum Goodies: XRD

XRD

Posted: 11 May 2011 10:00 AM PDT

See X-ray Diffraction.

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None Found

Tuesday, May 10, 2011

Petroleum Goodies: Yield

Yield

Posted: 10 May 2011 10:00 AM PDT

Yield: The specified minimum yield strength of steel found in pipe. As an example, the yield of N-80 casing is 80,000 psi. Commonly used in drilling.

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Monday, May 9, 2011

Petroleum Goodies: Young’s Modulus

Young’s Modulus

Posted: 09 May 2011 10:00 AM PDT

Young’s Modulus: An elastic constant that is the ratio of longitudinal stress to longitudinal strain and is symbolized by E.This named after British physicist Thomas Young (1773 to 1829). Commonly used in geophysics.

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Sunday, May 8, 2011

Petroleum Goodies: X-ray Fluorescence

X-ray Fluorescence

Posted: 08 May 2011 10:00 AM PDT

X-ray Fluorescence (XRF): A method for elemental analysis of samples based on the characteristic fluorescence radiated by various elements exposed to X-rays. In core examination, X-ray fluorescence typically is used to help determine mineral content. The elemental volumes are inverted to mineral volumes by assuming specific standard formulae for mineral composition. Commonly used in formation evaluation.

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Saturday, May 7, 2011

Petroleum Goodies: Sidetrack

Sidetrack

Posted: 07 May 2011 10:00 AM PDT

Sidetrack: To drill an alternative wellbore away from an initial wellbore. A sidetracking action may be performed on purpose or may happen unintentionally. Deliberate sidetracks might bypass an useless portion of the initial wellbore or investigate a geologic aspect close by.

In the bypass situation, the secondary wellbore is normally drilled considerably parallel to the previous well, which can be inaccessible because of an irretrievable fish, rubbish in the hole, or a collapsed wellbore. Commonly found in drilling.

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Friday, May 6, 2011

Petroleum Goodies: S-wave

S-wave

Posted: 06 May 2011 10:00 AM PDT

S-wave: An elastic body wave where particles oscillate perpendicular to the path where the wave develops. S-waves are created by the majority of ground seismic sources, but not by air guns.

P-waves which impinge on an interface at non-normal incidence can generate S-waves, which in that case are called converted waves. Commonly used in geophysics.

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Thursday, May 5, 2011

Petroleum Goodies: Sidewall Core

Sidewall Core

Posted: 05 May 2011 10:00 AM PDT

Sidewall Core: A core obtained from the side of the borehole, typically by a wireline tool. Sidewall cores can be obtained by using percussion or mechanical drilling. Percussion cores are taken by shooting hollow bullets into the formation.

The bullets are connected to the instrument by fasteners, and are recovered, along with the core inside, by pulling up the tool and the fasteners. Percussion coring equipment normally carry 20 to 30 bullets, but 2 or 3 instruments can be combined on one run in the hole. Commonly used in drilling and formation evaluation.

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