Electolis Ltd
These two liquids are
invaluable,
but only when they are separated
Human activity force mineral oil and
water contact with one another, and it destroys
natural harmony of purity.
In each stage, including oil
production, transportation, processing, usage, and utilization of fuel and
other oil products, as well as oil spill elimination and run-off water refining, there is a problem of separation of water and oil
products.
Effectiveness of this problem
solving has an essential impact on profitability of individual enterprises, on
economic conditions in some regions, as well as on environmental conditions and
as a result on living standards and population health.
Despite the fact that the problem of
separation of water and oil products as old as oil production, the ideal
equipment for solving this problem has not been created yet. Many companies in
various countries are working on this problem.
Our equipment (see Picture 1), which
is patented in
Instruments that work on
gravidynamic principle so-called Gravidynamic Separators are used for liquids
separation.
Gravidynamic Separators (GS) are the
instruments in which comprehensive approach to liquids separation is used. The
following things are supported in interrelated proportions:
Main fields of application
of the equipment
1. Preliminary separation of stratal
water
Systems of oil transportation and
preparation include extraction area, booster pumping stations, assembly places,
and kilometers of pipelines. Preliminary evacuation of water makes an the most essential impact on cost saving, mainly thanks
to energy saving. Water evacuated from oil wells is a corrosive liquid and its
transportation leads to intensive corrosion of pipeline and other oil
equipment. In addition, this water is a source of pollution of the environment.
So, it is reasonable to exclude water transportation and to pump it back to
beds. Suggested equipment can be used for that in extraction area directly.
Output of the stratal water
separation plants can be from 50 to
The separation of water directly in
extraction area has the following advantages:
In addition to the advantages
mentioned above, preliminary stratal water pumping in places of water-oil
liquid extraction has a good effect on operation of equipment for oil transportation
and preparation.
In order to maintain oil production
on existence level under increasing of watering it is necessary to increase
extracted volume. But the volume that can be extracted is limited to pumps
output, pipeline throughput, water refining equipment output, and so on.
Increase in portion of water in a flow leads to increase in corrosion of
pipelines and other equipment. Therefore, additional anticorrosive treatment or
repair expenses are needed. Pipelines damages induced by corrosion due to
additional water can lead to heavy expenses for oil spill elimination.
Increase in portion of water in
extracted liquid leads to necessity for closing wells with high water content
or oil equipment modernization that require considerable capital investment.
Usually, such situations arise in the final stage of oilfield exploitation. In
this stage investments become unreasonable and wells temporarily abandon. Coast
of produced oil is a lost profit.
Decrease in current or future
expenses for extraction, refining, and placing a large amount of corrosive
associated water is also very important. Problems with stratal water will lead
to pollution of underground deposits of drinking water sooner or later, if
appropriate steps, starting with decrease in volume of stratal water
transported to a long distance, do not be taken.
Usage of suggested equipment is
another way to decrease expenses for solving the problems with stratal water.
The main idea is to separate associated water in each stage of oil production,
transportation, and preparation where water exists in free phase spontaneously
due to relative instability of oil-water emulsion and/or because of special
arrangements such as heating or bringing in of demulsifiers.
Thus, usage of suggested equipment
based on gravidynamic separators will increase oil production from running
wells and restore the output of temporarily abandoned wells.
2. Gathering of oil and elimination
of oil outflows
Recently many company
increase a production of mobile equipment for oil gathering, especially on
vehicle with cross-country capacity. Suggested gravidynamic separators can
successfully be used almost on any vehicle.
The output of the equipment is
limited to the carrying capacity of carrier only. For vehicle the output is
from 10 to 20 m3/hour.
If the equipment is placed on a
riverboat or on a sea craft, the output is limited to output of transfer pump
or displacement ton of the boat.
Depending on gathering of water-oil
blend and transportation it to separator as well as necessity of special oil
dehydration high dehydration rate as well as high water quality can be
achieved. For example:
More efficient approach to equipping
boats (especially oil-tankers) with instruments for oil dehydration is
possible. This approach is based on using gravidynamic separators.
3. Refinement of manufacturing water
and process liquid
Gravidynamic separators can be used
for refinement of manufacturing water and process liquid from oil-products
either as a main separator or as a preliminary one. The following
characteristics can be reached:
If there is a need of refinement of
manufacturing from another pollutants, such as salts,
heavy metal ions, and dredges, sedimentation can be applied, using most recent
coagulants that allow achieving current standards of residual pollutants.
Technical specifications for
gravidynamic separators with output up to 2000 m3/hour have been
developed and approved.
Gravidynamic separators have been applied
in oil industry in Czechia and