LOT Analyzer is a
program for reading FIT, LOT & ELOT and interpreting Leak-off,
Shut-In, Propagation and Maximum pressures. The program
interacts with a database where all tests along with the results and
other information are being stored.
Analyzer main window presents information about a test including the
time series. The time series are shown as a list of values as well
as a graphical representation.
Users can save their
working environment to a login username. The working environment
includes private directory and selections of colors and units. There
are several options for units on numeric values.
Import time series from a
text file by specifying columns and units for time, pressure, and
volume, or insert the time series manually by entering the values
and their appropriate units. The manual approach features an option
to specify either time or volume and let the program calculate the
other and an option to set Shut-In which then will keep the volume
value from then on. The user may also edit the time series in the
same approach as inserting new entries.
The program presents a
preview before printing and the user may choose between four
different printouts; Final Well Report, LOT Graph, LOT Information,
and LOT Time Series.
graphical presentation shows the time vs. pressure graph in a
coordinate system where the user can interpret the pressures. A
graph showing volume vs. time is drawn in the lower part of the
coordinate system. The user can zoom in and out and select between
graph styles and sizes.
Maximum and Propagation
pressure are set by marking with a horizontal line from the graph
window while Leak-off and Shut-In pressure uses a similar window
that is specialized to set parameters and calculate these pressures.
Interpretation of Shut-In pressure offers seven different
calculation methods from which the user can choose: Inflection
point, P vs. log((t+dt)/dt), P vs. dt, Muskat, Log P vs. log t, dP/dt
vs. P, P vs. sqrt(dt)
Lot Analyzer interacts
with a database and a database interface where the data can be
stored. The database offers an easy way to store data and to review
data later. The interface makes it easy to search among all tests
and make a list of those of interest. Selecting a test will open
this test in Lot Analyzer. The results from the database will be
accessible through a previous and a next button.