Founded in 1971 to offer services to the mining industry, PT Geoservices evolved into a fully integrated exploration services company. Employing more than 1500 people, some of which are expert in specialized fields from a number of foreign countries, the company is offering in mapping surveys, geology, geophysics, downhole measurements, borehole drilling, laboratories analysis, and cargo superintending for quantity and quality.

PT GEOSERVICES is a limited company (Ltd.) and 100% owned by Indonesian citizen named Durban L. Ardjo and H.L. Ong. They remain actively involved in its management, PT Geoservices has a solid base of expertise covering all aspects of the exploration and development of Indonesia’s oil, gas, coal, mineral, and geothermal industries. Originally providing field sampling and chemical analysis for the mineral industry, PT GEOSERVICES has diversified its services and broadened its clientele.

Today it is a one-stop organization that can fulfill all exploration and analysis requirements for each of the industrial sectors it serves. To provide better service throughout the archipelago, PT GEOSERVICES steadily expanded its operations from its original Bandung base, established in 1971.The company now has branch offices in Jakarta and Singapore as well as other key locations, including Samarinda (East Kalimantan), Balikpapan (East Kalimantan), Banjarbaru (South Kalimantan), Tarakan (North Kalimantan), Pekanbaru (Riau), and Kendari ( Southeast Sulawesi).

PT GEOSERVICES internationally known for expertise and reliability in all areas of its activities. The growth of the company’s size and reputation has been rooted in the excellence of its employees. The foundation for this excellence is a long-term commitment to the development of skills and knowledge, including off-shore training of local employees and interaction with expatriate consultants who relocate to Indonesia for varying periods of time.

To facilitate technology transfer PT GEOSERVICES enters into Joint Venture or Technical Assistance agreements with foreign-based companies that are recognized as leaders in their respective fields. The combination of experienced personnel, modern instrumentation, extensive staff training, and strict quality control procedures has gained PT GEOSERVICES worldwide acceptance. Dedication to maintaining these high standards in Indonesia ensures that the company’s services will enjoy international recognition for many years to come.


“Excellent Services With High Professional Integrity “
The company has gained a high reputation among major mining companies in Indonesia, as well as overseas companies buying Indonesian coals.