Our Past Experiences

Kedangpahu Surface Geological Mapping

Timeframe: August 2019–February 2020

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The aim of this project is:

1. To carry out a detailed analysis of the age and geological structure of the outcrop which will be used for seismic interpretation of low quality seismic, especially in the Kedangpahu region. The reconstruction also helps with the interpolation of the seismic horizon within the study area,
2. To reduce the uncertainty of Kedangpahu - Artos prospect by directly observing the fault lineament on the surface and shear zone observation for fault seal analysis,
3. To understand the distribution of Miocene facies to help update GDE maps of Early Miocene,
4. To find oil seepage based on information from local residents, there are 3 locations of oil seep that have different characters. The different characters of oil can indicate different source rock or different levels of maturity.

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Scope of Work:

• Compilation of existing geological data.
• Fieldwork.
• Ship samples to a laboratory and compilation of laboratory result/data.
• Preparation of reports, maps, and cross-sections.

Geohazard Site Survey in Genting Oil PTE.LTD Locationat Kasuri Block, Bintuni Basin, West Papua

Timeframe: March 2021–September 2021

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The aims of this job are to do review survey of the geological and geotechnical condition, including engineering geology and hazard assessment to definite border area and to process the result of the survey’s data and presenting into geological hazard map for depth 0-100 metre.

The purpose of this job is to get detail potential hazard condition of the area surface, actual and accurate that can fulfill the needs of the plan and construction activity in the digital map.

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Scope of Work:

• Collect secondary data around project site including satellite imagery, regional geology map, Indonesian Earthquake Map and Standard, USGS Earthquake Map and Seismic Data.
• Perform to reviewdesktop study of regional geologic setting and site-specific geologic formations and structure around the project site.
• Review of generally accepted previously published geologic reports pertaining to the project site area.
• Conduct engineering geological mapping (strike, dip, fault, joint, and lithology) along the pipeline footprint with plus-minus 100 meters from the pipeline only in the seismic refraction survey area (9 km).
• Conduct geomorphological mapping along the pipeline footprint (90 km).
• Conduct Surface Hydrological Mapping (Rivers, Creeks, and Water Springs)  along the pipeline footprint with plus-minus 100 meters from the pipeline only in the seismic refraction survey area (9 km).
• Conduct Trenching or drilling only in the seismic refraction survey area or a chosen location (optional).
• Conduct radiocarbon dating sampling in trenching test or drilling (optional).
• Identify Major Seismic Fault pertaining to the project site area.
• Identify active and dormant landslides pertaining to the project site area.

Provision of Services (Study) for Prospect and Lead Maturation/Evaluation Post BLL-A1 Well Result

Timeframe: October 2022–2023

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Purpose of Study:

1. Do seismic interpretation and mapping for 6 horizons i.e. Klasaman, Lower Klasaman or Klaili, Klasafet, Kais, Intra Kais, Sirga, Base Klamogon or Faumai, and Basement.
2. Perform to post drill well analysis and report evaluation.
3. Make Petroleum system and play analysis.
4. Do Prospect and Lead Inventory, prospect maturation, and volumetric calculation in study area.

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Scope of Work:

• Seismic Interpretation and Mapping (Time and Depth)
• Post drill well analysis and report evaluation
• Petroleum System and Play Analysis
• Prospect and Lead Inventory
• Prospect Maturation
• Volumetric Estimation
• Reporting

Studi Deliniasi Tanah Terkontaminasi dengan Metode Geolistrik dan Pemboran Inti Pertamina EP

Timeframe: 10 Weeks (~3 Months)

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Purpose of Study:

To discover the area of the polluted area and the amount of polluted soil in the former Kemanng SP area and the former heater location (Simpang Pulai).

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Scope of Work:

• Collecting Data/Information
• Geological Mapping
• 2D Resistivity Survey
• Core Drilling
• Data Analysis and Integration
• Sample Analysis

Studi Geologi Mesozoikum Area Sumatera Bagian Utara

Timeframe: 30 Weeks (~8 Months)

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Purpose of Study:

1. Merekonstruksi geologi area Sumatera Utara (Daerah Kutacane pada khususnya) terutama konfigurasi pada umur Pre-Tersier (sedimen berumur Mesozoikum).
2. Membuktikan potensi hidrokarbon di Play Pre-Tersier dengan konsep sistem petroleum Mesozoikum yang komprehensif berdasarkan data-data pemetaan dan Analisa laboratorium.

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Scope of Work:

• Field observation of geological outcrops and fact-finding (including preliminary surveys and scout checks).
• The learning process for students in the field and in class for a better understanding, especially regarding pre-rift formations.
• Macroscopic analysis and variation of lithological characteristics, indications of hydrocarbons and their relationship to the framework of the petroleum system.
• Acquired several outcrop rock samples for laboratory analysis.
• Making recommendations for continuation of exploration is included in the final report.
• Fieldtrip.

Studi Distribusi Batuan Paleogen Blok Sangatta Batu Utak

Timeframe: May 2020–February 2021

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Purpose of Study:

1. Answering the tectonic configurations that affect Paleogene sedimentary succession. identifying source to sink areas of the provenance, and assemblages of the provenance.
2. Detailed identification of the distribution and quality of Paleogene-aged sediments in the Sangatta-Batu Utak Area, both surface and subsurface.
3. Evaluating the pattern of the basin that developed in the Sangatta-Batu Utak Area.
4. Analyzing the prospective potential of Paleogene-aged sediments in the Sangatta – Batu Utak Area through integration of the results of previous studies.

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Scope of Work:

• Preliminary studies
• Fieldwork and representative rock sampling in an area of 4530 KM with a total length of track 834 KM
• Conducting analysis of rock samples taken for laboratory analysis
• Structure and tectonic analysis (2D seismic interpretation, well correlations, and palinspatic reconstruction to create a regional tectonic model)
• Stratigraphy analysis (sedimentological analysis, biostratigraphy, provenance and determining the age of rocks to obtain facies, provenance and paleogeographic models
• Analysis of reservoir properties (laboratory analysis in the form of RCAL and SCAL to know the quality of paleogenous sediments)
• Seismic tomography, gravity survey, magnetic and MT data integration
• Exploration play concept evaluation
• Virtual fieldtrips

Studi Geologi dan Geofisika Konsep Eksplorasi Fairway Play Formasi Ngimbang dan Formasi Ngrayong di Blok Tuban East Java

Timeframe: June 2020–July 2021

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Purpose of Study:

The Tuban East Java Block is one of the active blocks owned by Pertamina Hulu Energi through its subsidiary PHE Tuban East Java which is currently actively carrying out exploration activities in the North East Java Basin.

One of the main targets in exploration activities within the Tuban block is the Ngimbang Formation syn-rift play, the Kujung Carbonate play and the Ngrayong Formation clastic play.

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Scope of Work:

• Evaluation of stratigraphy & sedimentology facies from well – seismic – outcrop data.
• Evaluation of the geological structure.
• Evaluation of palinspatik structures on 3 key seismic lines.
• Evaluation of well post mortem.
• Subsurface mapping (seismic mapping) focuses on the Ngimbang, Kujung and Ngrayong Formations.
• Evaluation of 1D Basin Modeling for several key wells.
• The outcrop data analogy focuses on the Ngrayong Formation and the Kujung Formation.
• Evaluation of the play fairway concept for the Ngimbang Formation, Kujung Formation and Ngrayong Formation.
• Evaluation of the petroleum system concept and geological risk for the Ngimbang Formation, Kujung Formation and Ngrayong Formation.
• Organize a field trip to the northern part of the East Java Basin (North East Java Basin).

Pre-Tertiary Petroleum System Opportunity in North Sumatra Basin

Timeframe: May 2020–June 2021

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The aim of this project is:

1. Regional cross section from outcrop, MT, and seismic to integrate surface data in Kutacane to Pertamina subsurface working area.
2. Petroleum system evaluation.
3. To understand the fluid history of Permian Carbonate in North Sumatra Basin to see its relation to diagenetic realm to paleo-temperature, structural and tectonic history.
4. To see the reservoir property of pre-Tertiary sediment.
5. Regional basin modelling study to evaluate and simulate the petroleum system related to Pre-Tertiary source rock, migration, and trapping.

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Scope of Work:

• Magneto telluric (MT) acquisition to integrate surface and subsurface data. The MT survey will be taken from 12 points.
• Laboratory analyses for sedimentology, dating, reservoir property, and diagenesis.
• Stratigraphic re-evaluation of pre-Tertiary from outcrops and selected wells which penetrated Pre-Tertiary Formations.
• 1D and 2D Regional Basin Modelling to evaluate pre-Tertiary play.
• Exploration Plays and Concept generation.