ULTRAFLO-N

ULTRAFLO-N

Complex action technology for enhanced oil recovery: designed to increase both sweep efficiency and oil displacement efficiency.

The cost of work is calculated individually

The technology has all the necessary licenses and permits

Technology Description

ULTRAFLO-N technology is designed for efficient extraction of oil from terrigenous and carbonate reservoirs of fields developed by waterflooding methods. The technology is aimed at removing the remaining oil that can't be extracted during normal flooding of oil reservoirs even using known advanced recovery methods.

ULTRAFLO-N technology is implemented in the areas of fields, where, as a result of the uneven promotion of the displacement front and break of injected water in production wells, certain highly permeable reservoir intervals washed areas formed with low filtration resistance, where the bulk of the displacement agent (water) is filtered without significant impact on oil production from low-permeability interlayers.

Presentation

with detailed
information

Efficiency

The technology was tested in sandstone reservoir fields in Udmurtia in 2013. Oil viscosity in reservoir conditions was 24 to 39.6 MPa•s, produced water density was 1.18 g/l, the average water cut in production wells in the pilot area was 76.3 to 98.7%.

Specific process efficiency calculated on displacement characteristics was 1,456 tons per one well operation with a continued effect.

 

Field

Test plot No.

Level, horizon

Treatment date

Cumulative incremental oil production for 12 months, tons

Arlanskoe oil field

1

Visean

05.2013

1,407

Novoselkinskoe oil field

2

Visean

06.2013

1,450

Novoselkinskoe oil field

3

Visean

06.2013

1,510

TOTAL:

 

 

 

4,367

 

Planned effect duration: over two years.

Properties, Features and Answers to Questions  

Features

Distinctive feature of ULTRAFLO-N technology*:

  • displacement efficiency growth rate for highly permeable models was over 15%;
  • RRFW residual resistance factor was 3.1 to 4.5;
  • the average value of the relative flow in low permeability model increased from 3-5% to 50-79%, and in highly permeable models it decreased from 95-97% to 15-21%, i. e. impact coverage increased;
  • average oil recovery ratio (recovery) increase was 20-25%;
  • 73.1% of the oil was displaced from low-permeability models by blocking highly permeable channels and redistribution of pumping water filtration flows in non-drained parts of area models;
  • injected reagents were freely pumped through a porous medium, without the creation of abnormally high depressions.

*Data collected for physical models of inhomogeneous oil reservoir.

Which independent organizations confirmed the asserted effects of ULTRAFLO-N technology?

LUKOIL-Engineering LLC of PermNIPIneft

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