System meters ownership transfer

   Been completed memorial held accountable financial system meters CUSTODY TRANSFER METERING SYSTEM at the port of Basra for the export of crude oil by the American company within PARSONS held with the U.S. Department of Defense / Department of the Gulf region / GRD, under the auspices of the South Oil Company - the processes - Section measurements and the movement of oil and gas.
And also Mr. Mohammed Jassem Kamel (Division meters official transfer of ownership):
This is a modern system of systems used for financial accounting and they conform to specifications and standards used for the measurements of the global oil and promoters such as the American Petroleum Institute API and the new national system of measurement NATIONAL METERING CODE prepared by the Iraqi Oil Ministry in collaboration with global experts in the field of measurement for the purpose of standardization methods Measurement used P sector oil companies and all their conformity with the measurement methods and global standards.

This system consists of:
1. Turbine flow meters TURBINE FLOW METERS type DANIEL 1500 SERIES number (24) as (12 as each platform) with all accessories candidates STRAINERS transmitters, and temperature transmitters TEMPERATURE PRESSURE pressure valves and control valves and run-enter and exit the type BLOCK AND BLEEDS .
2. Meter calibration devices PROVERS number 2 (one for each system platform) from the production company CALIBRON SYNCROTRAK America.

The device calibration PROVERS calibration meters periodically to verify the authenticity of the work and ensure the accuracy of meters within the permissible limits and therefore universal value extraction plants METER FACTOR meter at the beginning of each shipment (BATCH).
Is the extraction factor meter METER FACTOR as follows :
At the beginning of the process of calibration of the computer as a run-FLOW COMPUTER order develop and control valves for linking meter respectively with a provers without interruption in the runoff. After obtaining reference to begin the process of calibration based computer recording meter reading and reading device provers (where the high reading accuracy) to signal the end of the process of expressing one, to be compared to readings and access to labs Meter:
METER FACTOR = METER READING / PROVER READING
And in this way tend to correct meter reading periodically.
Therefore we must be very important accurate reading device provers and to be examined by the lab and the factory as well as by the company closer neutral give testimony reliability work of this body.

3. DENSITOMETER density measurement devices:
The installation of devices measured density DENSITOMETER number 4, and one each pier, the gauges measuring the density and intensity of the crude oil used in the equations correct volume of oil to standard conditions (14.7 PSI, 60? F), they are correct-sized exporter of crude oil to the standard conditions globally agreed road following:

 


How to correct the volume of liquids to standard conditions:

That the rate of flow volume of crude oil exporter to the correct standard conditions (60 DEGF temperature and pressure of 14.7 PSIG) the following equation:






WHERE AS:
Qvstd: volume of the liquid flow rate corrected to standard conditions.
Qv: Flow rate as meter reading.
VCFm: correction factor when volume meter.



The VCFm correction coefficient is calculated as follows:
VCFm = CTLm x CPLm

WHERE AS:
CTLm: correction factor to the impact of temperature on the volume meter when compared to liquid circumstances Standard.
              
CPLm: correction factor of the impact when the pressure meter on the size of liquid compared standard conditions.
              These transactions are calculated as follows:

 

 
WHEREAS:
a : Thermal expansion coefficient of the liquid.
Tm: temperature at the meter.
Tstd: standard temperature (60 DEG F, 15,555 DEG C).

The thermal expansion coefficient A Calculated the following equation:

 

WHEREAS:
K0, K1, K2: constants taken from special tabulations by the American Mahdalnaft API.
RHOstd: density at standard conditions.

The CPLm Calculated from the following equation:

 

 
WHEREAS:
BM : Compressibility coefficient of the liquid when the meter (/ psig).
Pm: fluid pressure at the meter.
Pe: pressure balance pressure generated by the liquid-vapor liquid at a temperature meter  Calculated b (psig) and usually equal to zero and have value rapid evaporation of liquids (progressive)

Compressibility that labs at meter Bm? Calculated the following equation:



The mass flow rate corrected to standard conditions (60 DEG F temperature and pressure of 14.7 PSIG) the following equation:

Mass Flowrate(t/h)

qm=qv*RHOm*0.001 

WHEREAS:
Qm: liquid mass flow rate corrected to standard conditions.
Qv: Flow rate as meter reading.
RHOm: density of the liquid at the meter.


It made it clear "the importance of our intensive product at standard conditions RHOstd as well as when the product density meter RHOm to complete our correction in the volume of oil as well as for mass flow rate.

How to obtain the density of oil and correction of the standard conditions:
Oil density is measured by a density measuring the densitometer, accredited laboratory lab "certified" by the company before the close of global (third party).

The density of the product corrected to standard conditions calculated the following equation:

 

 WHERE AS:
DTP: reading measure density (kg / m³).
VCFd: volumetric ratio correction factor to the heat and pressure measurement density is calculated as follows:

CTLd: correction coefficient proportion of the impact of temperature measurement in intensity.
CPLd: correction coefficient proportion of the impact of pressure measurement of density.
             These transactions are calculated as calculated when the meter is the following equations:

 

 

 
 

Through access to the oil density in standard conditions RHOstd oil density can be calculated when the meter by the following equation:

   RHOm = RHOstd / VCFm

With this we can deduce that the density of the oil necessary to complete the equation patch and volumetric mass and the need to account for each one, whether they are calculated in units (kg / m³) or (ib / ft ³) or (API):

Density specific gravity X = 8.337193

Specific gravity = 141.5 / (API gravity +131.5)

Density = [141.5 / (API gravity +131.5)] X 8.337193


4. Taking organs automatic models AUTOMATIC SAMPLERS
     Was the installation of devices is automatic models AUTOMATIC SAMPLERS number 4, and one each pier.
  These devices take the models in limited quantities of crude oil at the pump per shipment (ie one tanker loading) pulse rate to be determined by a computer run-FLOW COMPUTER purpose of obtaining certain amount homogeneous source of crude oil used in laboratory tests to determine the value and density of oil API, which is determined on the basis of quality and the price of crude oil per barrel.

 5. Rooms control:
 Constructed my room control (A & B) at the control room, one for each platform, consisting of:
A - control system upon the work meters COMPUTERIZED METERING SYSTEM (CMS):
The control system on this system work meters where contains:
1. Computers run-FLOW COMPUTERS produced by DANIEL.
2. System control valves electric PAKSCAN produced by ROTORK.
3. Calculator control SERVERS.
4. The graphical user interface HMI, which includes the operation of the system.

B - protection system and shutdowns SAFETY INSTRUMENTS SYSTEM (SIS)
And links to all the sensors fire protection and leak gas sensors and switches pressure and temperature and level of flood reservoirs. Urged is doing to stop pumping SHUTDOWN when any emergency situation dangerous require this.

The system still does not depend on financial accounting with buyers until the issuance of certificates reliability explicit system by the company closer neutral.
And was recently contracted with a firm SGS for the issuance of such certificates and expected date of the issuance of certificates for the month of June 2008 borders as contained in the contract.