Petroleum Goodies: April 2011

Saturday, April 30, 2011

Petroleum Goodies: Temperature Converter

Posted: 30 Apr 2011 10:00 AM PDT

Convert Temperature From and To Different Units

This tool is useful to convert temperature from and to different units. Available units are Fahrenheit, Celsius, Rankin, and Kelvin. Enter temperature in known unit and then hit enter to calculate temperature 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:

Friday, April 29, 2011

Petroleum Goodies: Abandonment Costs

Abandonment Costs

Posted: 29 Apr 2011 10:00 AM PDT

Abandonment Costs: The expenses related to abandoning a well or production facility. Such costs are specified by the authority for expenditure (AFE), and typically cover the plugging of wells; removing of well instruments, producing tanks and related installations; and surface removal.

Similar Posts:

Thursday, April 28, 2011

Petroleum Goodies: Shrinkage Factor Calculation

Shrinkage Factor Calculation

Posted: 28 Apr 2011 10:00 AM PDT

Calculate Shrinkage Factor

This tool can estimate shrinkage factor and oil gas ratio. Input parameters consist of pressure, temperature, and specific gravity at 60 deg F. Specific gravity is limited from 0.7 to 0.95. 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:

Wednesday, April 27, 2011

Petroleum Goodies: Authority for Expenditure

Authority for Expenditure

Posted: 27 Apr 2011 10:00 AM PDT

Authority for Expenditure (AFE): A monetary report, normally made by the operator, to list predicted costs of drilling a well to a target depth, casing point or geological target, followed by either finishing or abandoning the well. Such expenditures can include excavation and surface site preparation, the daily leasing price of a drilling rig, prices of fuel, drill string, bits, casing, cement and logging, and coring and testing of the well, and others. This estimation of costs is presented to partners for approval before beginning of drilling or following processes.

Similar Posts:

Tuesday, April 26, 2011

Petroleum Goodies: Specific Gravity Calculation at 60 deg F

Specific Gravity Calculation at 60 deg F

Posted: 26 Apr 2011 10:00 AM PDT

Calculate Specific Gravity at 60 deg F

This tool specifically calculate specific gravity at 60 deg F. This tool also estimate K factor. Input parameter consists of specific gravity at any given temperature and temperature. Temperature can be input in Fahrenheit or Celsius. Specific gravity input is limited from 0.66 to 0.98, and temperature from 0 to 150 deg F. 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:

Monday, April 25, 2011

Petroleum Goodies: Back-Pressure

Back-Pressure

Posted: 25 Apr 2011 10:00 AM PDT

Back-Pressure: The pressure inside a system due to fluid friction or an stimulated resistance to pass through the system. Many process facilities need a minimum amount system pressure to work properly. The required back-pressure is usually generated and managed by a valve which is set to perform within the preferred range of types of conditions.

Similar Posts:

Sunday, April 24, 2011

Petroleum Goodies: Neutron Porosity

Neutron Porosity

Posted: 24 Apr 2011 10:00 AM PDT

Neutron Porosity: Referring to a log of porosity primarily based on the impact of the formation on fast neutrons released by a source. Hydrogen provides by far the main effect in reducing and acquiring neutrons. Since hydrogen can be found primarily in the pore fluids, the neutron porosity log responds principally to porosity. Yet, the matrix and the type of fluid have also an effect.

The log is usually adjusted to read the right porosity assuming that the pores are filled up with fresh water and for a particular matrix (limestone, sandstone or dolomite). It is presented in units of porosity (vol/vol) for the matrix selected. The depth of investigation is several inches, so that the log measures primarily in the flushed zone. Commonly used in formation evaluation and logging.

Similar Posts:

Saturday, April 23, 2011

Petroleum Goodies: Volume Converter

Volume Converter

Posted: 23 Apr 2011 10:00 AM PDT

Convert Volume From and To Different Units

This tool is useful to convert volume from and to different units. Available units are barrels, cubic meters, cubic feet, and US gallon. Enter volume in known unit and then hit enter to calculate volume 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:

Friday, April 22, 2011

Petroleum Goodies: Absolute Open Flow Potential

Absolute Open Flow Potential

Posted: 22 Apr 2011 10:00 AM PDT

Absolute Open Flow Potential (AOFP): The highest flow rate a well can potentially produce with zero pressure at the center of the perforations.

Similar Posts:

Thursday, April 21, 2011

Petroleum Goodies: Gas Rate Calculation

Gas Rate Calculation

Posted: 21 Apr 2011 10:00 AM PDT

Estimate Gas Rate Based on Choke Opening

Very useful tool to calculate gas rate if we don’t have flow meter at the pipeline, especially during well test. This tool estimate gas rate based on input parameters such as upstream pressure, gas specific gravity, and choke size. If gas rate known, this tool can estimate choke size. This tool is also known as critical flow prover. 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:

Wednesday, April 20, 2011

Petroleum Goodies: API Gravity

API Gravity

Posted: 20 Apr 2011 10:00 AM PDT

API gravity: A specific gravity scale formulated by the American Petroleum Institute (API) for calculating the relative density of numerous petroleum liquids, indicated in degrees. API gravity is gradated in levels on a hydrometer device and was created so that most values would fall around 10° and 70° API gravity. The arbitrary method applied to get this result is: API gravity = (141.5/SG at 60°F) – 131.5, where SG is the specific gravity of the fluid. See API gravity calculation.

Similar Posts:

Tuesday, April 19, 2011

Petroleum Goodies (2 new items)

Abnormal Pressure

Posted: 19 Apr 2011 10:00 AM PDT

Abnormal Pressure: Reservoir pore fluid pressure which is not like typical sea water gradient pressure. The term is normally related to greater than usual pressure, raised difficulty for the well designer as well as an increased associated risk of well handle issues. Pressure gradients greater than ten pounds per gallon corresponding fluid density (0.52 psi/foot of depth) are believed to be unusual. Gradients less than typical are generally referred to as subnormal.Similar Posts:

API

Posted: 18 Apr 2011 10:00 PM PDT

API: Acronym for American Petroleum Institute, a industry affiliation started in 1919 having offices in Washington, DC, USA. The API is backed by the oil and gas industry and is acknowledged around the world. Among its long-term efforts is the development of standardized assessment processes for drilling tools, drilling fluids and cements, called API Recommended Practices (“RPs”).

Similar Posts:

Monday, April 18, 2011

Petroleum Goodies (2 new items)

Apparent Velocity

Posted: 18 Apr 2011 10:01 AM PDT

Apparent Velocity: the velocity of a wavefront in a particular path, normally calculated along a line of receivers and represented by va. Apparent velocity and velocity are associated by the cosine of the angle at which the wavefront approaches the receivers.

Similar Posts:

Apparent Viscosity

Posted: 17 Apr 2011 04:01 PM PDT

Apparent Viscosity: The viscosity of a fluid calculated at a provided shear rate at a fixed temperature. In order for a viscosity measurement to be meaningful, the shear rate has to be stated or determined.

Similar Posts:

Sunday, April 17, 2011

Orifice Size Optimization

Posted: 17 Apr 2011 10:00 AM PDT

Optimize Orifice Size

This tool can be used to optimize orifice size. Input parameters consist of pipe and orifice diameter, current and wanted Hw. Output calculations are new orifice and actual Hw. 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:

Air Gun

Posted: 17 Apr 2011 07:02 AM PDT

Air Gun: A source of seismic energy used by acquisition of marine seismic records. This kind of gun produces extremely pressurized air directly into water. Air guns are also utilized in water-filled pits on land as an power source during acquisition of vertical seismic profiles.

Similar Posts:

Aquifer

Posted: 17 Apr 2011 01:00 AM PDT

Aquifer: A system of rock whose fluid saturation, porosity and permeability permit production of formation water.

Similar Posts:

Thursday, April 14, 2011

Petroleum Goodies: Gas Properties Calculator

Gas Properties Calculator

Posted: 14 Apr 2011 10:00 AM PDT

Gas Properties Calculation

This tool calculate gas properties such as gas compressibility factor (z), gas formation volume factor (Bg). Input parameters consist of pressure, temperature, gas specific gravity (air = 1), and gas composition of CO2 and H2S. 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:

Tuesday, April 12, 2011

Petroleum Goodies: Choke Performance Calculation

Choke Performance Calculation

Posted: 12 Apr 2011 10:00 AM PDT

Choke Performance Calculator

This tool allows user to choose between oil rate or choke size computation. Input parameters consist of upstream pressure, gas oil ratio, and oil rate (or choke size). Choke size is based on /64 inch. 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:

Sunday, April 10, 2011

Petroleum Goodies: Bubble Point Calculation

Bubble Point Calculation

Posted: 10 Apr 2011 10:00 AM PDT

Bubble Point Calculation

This is very handy tool to calculate bubble point. This tool was built by Easy Test using Visual Basic programing. Thus to run this tool you need an additional DLL file. In this link we already provided the Dll file.

File type: Executable file in zipped folder.

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

Friday, April 8, 2011

Petroleum Goodies: Type Curve Gallery

Type Curve Gallery

Posted: 08 Apr 2011 02:40 AM PDT

This type curve gallery was taken from a published paper and is intended to serve as a reservoir model guideline. This gallery consists of drawdown type curves. Analysts use these type curves to select one or more reservoir model which perform similar shape to actual data. Only one of these, however, will accurately represent the reservoir model. Therefore, judgement and experience from the analysts will help them to justify the reservoir shape and behaviour.

Format: pdf file in zipped folder.

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

Sunday, April 3, 2011

Petroleum Goodies: Well Test Analysis

Well Test Analysis

Posted: 03 Apr 2011 10:00 AM PDT

Fundamentals of Well Test Analysis

Well test analysis is conducted based on measurement of rate and pressure versus time under controlled condition. Pressure and rate measurements can be conducted at all stages in the life of a reservoir, i.e. exploration, delineation, development, production and injection. These measurements are used in reservoir and fluid characterizations, dynamic reservoir property determinations, volumetric calculations and well completion design.

Below a link to fundamentals of well test analysis that is provided by Fekete. All analyses mentioned in this file can be done using Fekete’s welll testing software. This is very useful information for petroleum engineers to refresh their mind on well test analysis.

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