Minas Database System (A Case Study)



Minas field is located 35 km Northeast of Pekanbaru, Central Sumatra, and is operated by PT. Caltex Pacific Indonesia (Caltex). Minas field is classified as a giant oilfield, and is one of the largest oilfields in Southeast Asia. More than 1350 wells have been drilled in the 50-year history of the field. Current oil production is about 170,000 BOPD. The field. is presently undergoing large-scale water flood, and several Tertiary Recovery Methods are being studied. Considering the size of the field, years of production and number of wells drilled, enormous amounts of data have been collected. Integration, organization and management of these data in an efficient and effective manner requires a dedicated staff with a focused management plan. Data is a priceless company asset, which has to be well maintained for running the oil business properly –developing the oil field, producing the oil optimally and making a detail studies, and decisions regarding future Enhanced Recovery Methods. A good systematic and integrated database needs constant management and professional commitment. The quality of ongoing conventional and advanced reservoir characterization studies depends on a reliable and complete database system. The key data include: Seismic (2D & 3D high resolution), curves of the open and cased-hole logs, RFT, SWC/ Conventional Core (reports, photograph, conventional/special analysis) and production data (perforation interval, BOPD, water cut, IZT or swab test etc.). Quality control of each type of data is highly recommended starting from data acquisition in the field up to storing it in the data bank accessible by end users. The data network system should link all application software, because this is very critical to easily import and export between and within critical applications. A comprehensive data flow plan must be fully documented and it should clearly understandable and followed by all data users. Only one master integrated database should be maintained in a location, for example, Minas SBU and/or Caltex corporate database. Only key database administrator personnel should have overall access to modify/update data in the master database. By preparing, maintaining and integrating a solid master database organization, data retrieval and preparation cycle time can be reduced by 2 — 3 times for an important earth science or engineer study. Reliability and data consistency will ensure accurate process and prevent the occurrence of “garbage in garbage out” analyses.


Authors : Dony Kuswandono & Bambang Poernomo