Black Gold Production Company was established in 2014 with the aim of transferring new oil technologies from European countries to Iran. The company has a full range of additives for use in pipelines, the most important of which is the friction reducing material ([1] DRA) for use in crude oil and product transmission lines.

This product, which is a polymer from the alpha-olefins family with high molecular weight, has had very favorable effects in reducing manufacturing and operating costs in the oil industry. Crude oil pipeline is considered a product. DRA injection at very low concentrations of [2] ppm in crude oil and product pipelines reduces the pressure drop caused by friction. Decreasing the frictional pressure drop can lead to a decrease in the output pressure [3], followed by an increase in the capacity of the pipeline.

Results from DRA injection:

1. Stimulation of DRA material to reduce operating pressure or remove a number of electric pumps or turbopumps in the oil pumping system

By injecting DRA, the operating pressure of the pumps and turbines is reduced. In some cases, you can also turn off a number of pumps or booster pumps [4] or even a roadside pumping station, resulting in significant savings in the cost of repairing and maintaining the crude oil and product pumping system.

A) Turn off the electric pumps in the 8-inch and 52-kilometer pipeline

 

Injection rate

DRA(Lit/Hr)

Number of electromotors in the circuit

Pressure at the beginning of the pipeline

(psi)

Dubai

( BPD)

 
0343021500Before DRA injection

6

118521500

After DRA injection

Injection rate

DRA(Lit/Hr)

Number of turbopumps in the circuit

Pressure at the beginning of the pipeline

(psi)

Dubai

( BPD)

 
03660105000Before DRA injection
252267108000After DRA injection

 

The conditions of turbopumps before and after injection were as follows:

Turbopump numberRotational speeds of the gas producer rotor (NGP)
Before DRA injectionAfter DRA injection
192%78%
286%It was turned off
383%75%

 

 

C) Remove the pump house and increase the transmission capacity of the product in the 12-inch and 60-kilometer pipeline

By injecting DRA, you save a lot of money on the costs of supplying, maintaining and repairing the pump house, as well as the huge costs of supplying electricity to the electric motors.

 

Injection rate

DRA(Lit/Hr)

Number of pump houses

Pressure at the beginning of the pipeline

(psi)

dubai

( BPD)

 
0250648320Before DRA injection
10150053600after DRA injection
Before DRA injectiondra
after DRA injectiondra

2. Increase Dubai on crude oil pipelines and products

By injecting DRA into the pipeline, the reduced frictional pressure drop can be converted to an increase in fluid flow.

a) Increase in oil flow in the pipeline 24 inches and 150 kilometers

Injection rate

 DRA(Lit/Hr)

Pipeline end pressure

(psi)

Pressure at the beginning of the pipeline(psi)

dubai

( BPD)

 
060230105800Before DRA injection
2860180179000after DRA injection

3. Safety and prevent premature wear of pipelines

By injecting DRA into the pipeline, a decrease in the frictional pressure drop and consequently a decrease in the outlet pressure of the pipeline is observed.

a) Reduce the outlet pressure in the pipe line by 8 inches and 97 kilometers

Injection rate

 DRA(Lit/Hr)

Pipeline end pressure

(psi)

Pressure at the beginning of the pipeline(psi)

dubai

( BPD)

 
030105016800Before DRA injection
63067518000after DRA injection

4. Increasing the exploitation of oil wells by injecting DRA into overhead pipelines

Due to the DRA injection, it is possible to use low pressure oil wells and sometimes increase the operation of existing wells.

a) Increase in oil production from low pressure wells through DRA injection in 6-inch and 27-kilometer pipeline

 

Injection rate

DRA(Lit/Hr)

The number of wells that can producePressure at the beginning of the pipeline(psi)

GOR

SCF/STB

dubai

( BPD)

 
021390160014000Before DRA injection
2031190160020000after DRA injection

dra 

  • Flexible pipeline design according to limitations and needs

    In the design and construction of crude oil and product transmission pipelines, DRA injection has led to a decrease in frictional pressure drop and thus a reduction in pipeline outlet pressure, which can be used in the design of transmission routes. Considering the reduction of the output pressure in the design leads to a decrease in the diameter and thickness of the transfer pipes. In addition, the use of pumps and turbines has been reduced, reducing the cost of investment and energy consumption.

    The table below shows an example of the design of a hinged line that can be modified using the DRA material, and depending on the costs, limitations, and capacity required to transfer the fluid, different concentrations of the DRA material can be used. Dad.

 

Pipeline design using DRA

 

800 km of pipeline in 5 parts of 160 km

Grade B seamless pipe, cSt 5 oil viscosity, crude oil with API 35

Pipeline capacity 250,000 barrels per day

Diameter pipe(inches)Wall thickness(inches)[5]MAOP
(psi)
Number of pump housesThe length of each section of pipeline(Km)

Injection rate

DRA
(ppm total)

Design variablesID
240.3757885160 0Basic design1
240.31265651609Reduce wall thickness2
240.281591516015Reduce wall thickness3
220.375859516020Reduce the diameter of the pipeline4
200.375945516050Reduce the diameter of the pipeline5
240.375788326722Reduce the number of pump houses6

[1] Drag Reducing Agent

[2] parts per million

[3]Discharge Pressure

[4] Booster Pump                                    

[5] Maximum Allowable Operating Pressure