Customized Software Development

We offer customized software solutions in the area of reservoir engineering and simulation.
Often, data format transformation and I/O issues cost valuable project time. Our team of reservoir engineers and software developers will be able to connect the applications of your choice in a very short time.

For example, the successful computer-assisted history matching tool SenEx can be connected to any numerical reservoir simulator.
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SenEx: The Sensitivity Explorer

SenEx

SenEx is an easy to use tool that calculates how the properties in every grid block affect the history match in a given simulation case. These “sensitivities” are calculated analytically. Therefore, after running your simulation case, SenEx computes the desired sensitivities using only the output of that run. It does not invoke the simulator for that purpose.

This distinguishes SenEx from other history matching tools which compute sensitivities by repeatedly running the simulator while varying the parameters. Moreover, the number of simulation runs needed by such tools increases proportionally as the number of evaluated parameters goes up. Usually, there are millions of grid block properties, and hence, those tools are not appropriate for the goal addressed by SenEx, which treats every rock property at every grid block as a parameter.

Using the computed sensitivities, SenEx captures which grid block properties need to be changed, where, and how, in order to improve the history match. SenEx provides the user with informative maps that tell how to modify the model and improve the history match; an exercise that would otherwise be a tough/tedious trial-and-error process.

SenEx tells you, after just a single simulation run, what to change where to quickly improve the match.
An interesting advantage of SenEx is that it works at the grid block level, and generates smooth maps, that are not based on any “multiplier boxes”. The multiplier boxes, which are widely used in conventional history matching work, are not only “unnatural”, but also always difficult to define in an optimal way. With SenEx you no longer have to struggle with multiplier boxes.

SenEx eliminates the need for “multiplier boxes” for modifying grid block properties.
With SenEx, you don’t have to focus on one well (or small group) at a time. SenEx makes the changes that, as much as possible, improve the match at all wells simultaneously. The run time of SenEx is not affected by the number of wells. SenEx can match oil, water, and gas rates. It can also match historical pressure data if available.

SenEx matches pressure and oil, water, and gas rates, for any number of wells. All wells are handled simultaneously.
Using SenEx is easy and can fit in any history matching workflow. After running a simulation case, SenEx will simply help you in coming up with new property arrays to be used in the next run. Following the next simulation run, you will again use SenEx to come up with the next set of property arrays. After each round, you will notice a considerable improvement in the match due to using the property arrays generated by SenEx. This loop is repeated until a satisfactory match is finally reached.

SenEx has been successfully tested by using several real-world data sets from reservoirs in different parts of the world. This innovative assisted history matching tool contributed to shortening the overall elapsed time of the history matching process. The overall cost of the process was also reduced as much less human efforts and expertise, and a smaller number of simulation runs were required. In addition, the quality of the resulting history match quite often went beyond of what is usually achieved through conventional means.