Well Log Data Management using Geolog: Implementation of Logs Stamping/Certification in Burgan Field
Authors: Joenaedy Mohammad Arief , Morsy Amr , Nugroho Bogi Haryo , Shah Zia Ul 
Published: November 2018

Burgan is one of the largest sandstone (clastic) oilfield of Kuwait. A tremendous amount of G&G data especially Petrophysical data has been acquired, processed and analyzed since third decade of last century. Different groups are maintaining their well logs data in various applications and formats. A huge amount of Petrophysical data resides in Geolog®, which is one of the major applications in KOC for Petrophysical data processing and analysis. Since their primary aim is not data management, so data management best practices were not followed in general. The data is often attributed to duplication, multiple naming conventions, low coverage, no verification and data centralization. All these elements lead to low confidence over data quality.

E&P Information Management Team, in collaboration with FD's, started a Well Log Data Management Solution (WLDMS) using Geolog® that has been implemented successfully in the Burgan field. This aims the management of Petrophysical data to create a universal well log data management processes to yield a unified well log database by identifying automated processes that are time efficient and provides high confidence on the data. Detailed workflows were developed and automated to build a reference project that contains only corporate-level final data, which has simple and consistent data structure, quality-checked and have standard nomenclature.

All wells of Burgan field have been transferred, stamped and certified in "The Master Project" using developed workflows, automated tools and implementation of best practices. Already QC'd data from different IM reference databases have also been consolidated. Log Stamping & Log Certification provided high-quality trusted well logs with measurable quality standards in terms of Bronze (Unified), Silver (Complete) and Gold (Consistent). It comprises of industry-specific quality standards, proven workflows and best practices such as standardization, uniqueness, completeness, consistency, verification and QC. This process provides high-quality trusted well logs with measurable quality standards. Furthermore, the data was checked for completeness both horizontally and vertically. All gaps were filled and logs were spliced to produce a single version of the complete curve that is ready to use. The data gap assessment has also considerably added unavailable data that retrieved 5.1 Million ft. of digital Petrophysical data from eSearch and apparently has delivered direct benefit of estimated more than US$ 35 Million for data non-availability of digital raw data, therefore the request for well logs digitization has been made. The complete process assures that all logs comply standard procedure and workflows. These best practices for Petrophysical data have been implemented successfully in the Burgan field and will be replicated in other Assets. It helped in eliminating data duplication and redundancy, boost confidence in data quality, enabled automation, streamline workflows (making them shorter and faster) and reduced uncertainty. Eventually, it results in improved processes and fast decision making by Kuwait Oil Company (KOC).