Until now history matching was a trial-and-error process, often cumbersome and time consuming, especially for big and mature fields with many wells. The industry has therefore developed computer assisted history matching tools. These tools require enormous computing power and typically hundreds of iterations yet individual well match quality is often quite poor.
Our SenEx (Sensitivity Explorer) is different: It is smart, requires only 10 – 20 simulation runs and dramatically improves the quality of your history match. What typically took months can now be achieved in days. SenEx stands for innovation and technology. It reduces turnaround time, saves manpower, licensing costs and mitigates risk as investment decisions are based on better reservoir models.
SenEx has been developed continuously over more than a decade and successfully applied in numerous field studies on reservoirs in different parts of the world.
SenEx has been successfully applied in numerous field studies on reservoirs in different parts of the world.
Ordinary history matching tools compute sensitivities by repeatedly running the simulator while varying the parameters. The number of required simulation runs increases dramatically as the number of parameters to be evaluated is increased.
Contrary to other tools, SenEx treats every rock property at every grid block as individual parameters and analytically calculates how the properties affect the history match in a given simulation case. Based on these analytical sensitivities, SenEx captures what grid block properties need to be changed, where, and how, in order to improve the history match quickly. The changes are kept minimal: only as needed. This leads to geologically sound and consistent models.
SenEx provides the user with maps showing how the properties at each and every grid block affect the match. This indicates how the model needs to be modified in order to improve the history match; an exercise that would otherwise be a tough and tedious trial-and-error process.
Permeability variograms remain largely unchanged
Authors: Hussein Almuallim, Kelly Allan Edwards (Barrick Energy Inc), Leonhard Ganzer (Tech. U. Clausthal)
Authors: R. H. Lind (HOT Engineering), O. Allottai (Akakus Oil Operations), A. M. Gaaim (NOC Libya), H. Almuallim (Firmsoft Technologies)
Authors: Hussein Almuallim (HOT FirmSoft Solutions FZ-LLC), Leonhard Ganzer (HOT FirmSoft Solutions FZ-LLC), Hiroshi Uematsu (ADNOC Offshore), Samir Bellah (ADNOC Offshore), Viorel Virlan (ADNOC Offshore)
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