Petrophysical Characteristics of Some Indonesian Reservoir Rocks

The need to maintain and improve Indonesia’s national oil and gas reserves and production requires support from various sectors of the industry. Apart from the need to discover new reserves, efforts have also to be spent in optimizing and maximizing reserves of the generally mature producing oil and gas fields. In so doing reservoir characterization is an integral part in modeling and planning for field’s further developments, production optimization, and any other activities that are aimed at production and reserves improvements. In reservoir characterization, petrophysical properties play a pivotal role in understanding about how reservoirs may react under various production schemes. Petrophysical properties of reservoir rocks are normally acquisitioned through both direct (laboratory tests and field survey) and indirect methods (geophysical interpretations), of which results of the direct approach are usually taken as sources of comparison and validity. This volume is made up of five published works that present results of studies on petrophysical characteristics of various Indonesia’s reservoir rocks derived from laboratory tests. This underlines that all data values were directly measured on rock samples from fields hence emphasizing representartiveness and originality of data. For this I would like to express my gratitude to PPPTMGB “Lemigas” as the administrator of the laboratory and the Ministry of Energy and Mineral Resources of the Republic of Indonesia as the overseeing authority of all subsurface data for permitting to use the data. Through the use of the data – and the ensuing analyses and published articles – I sincerely hope that this volume will serve as a contribution to the understanding over Indonesia’s reservoir rocks characteristics. This in turn will assist many activities in scientific/research areas and in engineering-related applications at various scales through introduction of local knowledge into the universally known standard methods and approaches. Being aware that the amount of data involved in the making of the volume is most likely to be just a minor part of the entire data available nationally, I also hope that this will encourage others to conduct similar studies using other sets of relevant data in order to improve further our comprehension over Indonesia’s reservoir rock characteristics.