ScaleChem
... Accurate oilfield scaling prediction
Find problems before they plug your well
assessment of potential scaling problems
for oil-field applications
Extreme high T, P conditions effects
ability to calculate phase separation and scaling tendencies
at
today's well conditions
OLI's ScaleChem Provides...
OLI System's expertise is in aqueous chemistry. Our generalized aqueous
thermodynamic model is the basis for calculations to address problems
in oil and gas well production.
Well Profiles
ScaleChem can be used to calculate scaling tendencies at user
specified temperatures and pressures. Detailed phase reports and solids
formation is given at each point.
Mixing Compatible Waters
Check the compatibility of different waters at user
specified ratios, in order to find safe ratios (no solids formation) for
injection and disposal operations.
Saturation at Reservoir Conditions
Saturate a water with respect to one or more solids to simulate reservoir
conditions.
Facilities Calculations
Simulate the filtering, mixing and separating of
waters in post-processing operations.
Formulating a Problem in ScaleChem
A simulation is formulated in ScaleChem by
using menu options to select Wells, Samples, and Scaling (requests).
Enter descriptive data
about the well
Most oil-field scaling calculations are
connected to a particular well. If this is true for your application,
you can name the well of interest. Multiple wells can be named in one
ScaleChem workspace.
Enter data about the Water
Analyses
At least one brine and, thus, one water
analysis is needed for a scaling calculation. Multiple brines can be
entered. They can be combined in different ScaleChem calculation requests.
Enter data about the Gas
Composition
The gas composition associated with the
well can also be entered and considered in a scaling calculation. This
is an optional feature of ScaleChem. The gas is not needed for the calculation
request. Also, multiple gas compositions can be entered in a ScaleChem
workspace. However, only one gas composition (and flow) is considered
during one scaling calculation.
Enter data about the HydroCarbons
An oil phase, or a mixed oil and gas phase
associated with the well can also be entered and considered in a scaling
calculation. This is ScaleChem V3.0 feature. The oil is not needed for the calculation request. The
hydrocarbon phase can be entered as characteristic C1 - C20, as pseudocomponents,
or as petroleum fractions.
Select a Scaling Calculation Request
Once data about brines and gases has been
entered, scaling calculation requests can be made. These include Scaling
Scenarios, the ability to ask for single or multiple point
scaling calculations; Mixing Waters the ability to mix waters at different ratios;
Reservoir, the ability to saturate a brine at reservoir conditions; and
Facilities, the ability to model the post processing facilities of the brine
at the well, by specifying a series of mix and/or separate(filtering)
steps.
Interpret the Output
A solids analysis is given at each temperature
and pressure which the user requests. Scaling indices for the
solids of interest are given, as well as amounts of scale estimated,
in both mg/L and lb/bbl. Plot is available for scaling requests which
span multiple T, P conditions.
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