@inproceedings{scholars9449, journal = {IOP Conference Series: Materials Science and Engineering}, publisher = {Institute of Physics Publishing}, year = {2018}, title = {Integrated constraints optimization for surface and sub-surface towards CAPEX free maximizing production}, volume = {458}, note = {cited By 2; Conference of 5th International Conference on Process Engineering and Advanced Materials, ICPEAM 2018 ; Conference Date: 13 August 2018 Through 14 August 2018; Conference Code:143521}, number = {1}, doi = {10.1088/1757-899X/458/1/012045}, abstract = {Integrated process operations and optimization are highly demanded in petroleum industries due to increasing costs. One of the advances is monitoring the integrated process by using single modeling and optimizing platform. This paper presents iCON, PETRONAS owned process simulation software, to predict the optimum pressure set point for separator train and choke valves' opening, to maximize production in an existing facility. The source code developed was used to generate pressure and flow equation for each well to obtain material compositions for iCON model. Starting from current topside operating separator pressure, multiple case studies were run in iCON to produce production profiles at different operating pressures. The optimum pressure will be iteratively analyzed against the process constraint to locate the global optimum topside separator pressure set point. A single surface and sub-surface modeling platform ensures seamless data transfer, thermodynamic stability and efficient optimization iteration. The findings from this research are considered reaping the additional gas and oil production just by changing surface facilities separators set points and individual choke valve opening without violating process constraints. {\^A}{\copyright} Published under licence by IOP Publishing Ltd.}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059411691&doi=10.1088\%2f1757-899X\%2f458\%2f1\%2f012045&partnerID=40&md5=5874a83f5f336d02288f06fd2dfb3e9b}, keywords = {Computer software; Data transfer; Process engineering, Material compositions; Multiple-case study; Operating pressure; Process constraints; Process operation; Process simulation software; Production profiles; Surface facilities, Separators}, author = {Zainal, S. A. and Daud, W. R. and Putra, Z. A. and Nor, N.}, issn = {17578981} }