Yılmaz Sakallıoğlu

YILMAZ SAKALLIOGLU

Consultant Geophysicist

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GeoSeS – Corporate Profile

GeoSeS (Geo Seismic Exploration Services) is an independent geophysical services and consultancy company headquartered in Urla, İzmir, Türkiye. Established in 2024, GeoSeS is dedicated to delivering modern, efficient, and innovative seismic exploration solutions to the global energy and resources industry.

The company was founded and is led by Mr. Yılmaz Sakallıoğlu, Owner and Chief Executive Officer, who brings extensive international experience in land and marine seismic data acquisition, processing, and interpretation.

GeoSeS provides specialized geophysical consultancy, technical management, and representation services to oil and gas, energy, mining, and near-surface investigation companies. The company offers comprehensive expertise across the full seismic project lifecycle, including project marketing and representation, coordination between clients and contractors, seismic survey design, data acquisition management, processing supervision, quality control (QC), and advanced seismic interpretation.

By combining technical excellence with rigorous quality assurance and independent project oversight, GeoSeS supports clients in optimizing exploration programs, enhancing subsurface imaging, and reducing geological and operational risks. The company's mission is to deliver high-quality, cost-effective geophysical solutions that enable informed exploration and development decisions.

Vision & Mission

Vision: To become a globally recognized and trusted partner in seismic exploration consultancy, known for technical excellence, innovation, and integrity in delivering geophysical solutions.


Mission: To provide independent, high-quality seismic consultancy and representation services that optimize exploration performance, reduce uncertainty, and create value for clients through advanced technology, experience, and disciplined project management.

Core Values

  • Integrity: Maintaining independence, transparency, and ethical standards in all operations
  • Excellence: Delivering technically sound and high-quality geophysical solutions
  • Innovation: Applying modern technologies and advanced methodologies in seismic exploration
  • Reliability: Ensuring consistent performance and dependable project delivery
  • Client Focus: Understanding client needs and delivering tailored solutions
  • Safety & Responsibility: Promoting safe operations and environmental awareness in all project phases

GeoSeS – Company Introduction

GeoSeS provides consultancy, technical representation, and specialized geophysical expertise to onshore and offshore seismic contractors, oil and gas companies, energy firms, mining companies, and near-surface investigation organizations.

The company supports exploration and development projects throughout all phases, from project marketing and survey planning to data acquisition, processing, and interpretation.

GeoSeS delivers professional services across three principal technical domains:

A. Onshore and Offshore Seismic Data Acquisition

GeoSeS offers comprehensive consultancy, technical support, and project management services for seismic survey design, field parameter optimization, contractor selection, and field operations management.

Key Services:

  • Seismic project marketing, consultancy, and representation
  • Field reconnaissance and survey area evaluation, including country-specific assessments
  • Preparation of comprehensive seismic data acquisition programs
  • Feasibility studies and optimization of acquisition parameters
  • Selection and contracting of suitable seismic acquisition contractors and crews
  • Preparation and negotiation of contracts with clients and contractors
  • Technical audits and start-up testing of seismic crews
  • Continuous field data acquisition quality control (QC)
  • Operational supervision and management of field crews
  • Data verification, formatting, and preparation for processing

B. Seismic Data Processing

GeoSeS provides independent technical supervision to ensure that seismic data processing is performed using optimized workflows and in accordance with industry best practices.

Key Services:

  • Selection of appropriate seismic data processing contractors
  • Preparation and negotiation of processing agreements
  • Determination of optimal processing parameters
  • Design and implementation of efficient processing workflows
  • Technical audits and start-up supervision of processing projects
  • Continuous processing quality control (QC)
  • Final verification and preparation of processed data for interpretation

C. Seismic Data Interpretation

GeoSeS delivers advanced geophysical interpretation services aimed at reducing exploration uncertainty and enhancing reservoir understanding.

Key Services:

  • Structural and geological interpretation in both time and depth domains
  • Stratigraphic interpretation and reservoir characterization
  • Seismic inversion and rock physics analysis for porosity and lithology prediction
  • 3D seismic interpretation for identification of structures, faults, and trap geometries
  • AVO analysis, inversion, and seismic attribute studies for reservoir and seal evaluation
  • Velocity modeling and pore pressure prediction for drilling risk assessment
  • Prospect generation, field evaluation, and exploration risk analysis

Representative & Coordination Services

GeoSeS acts as an independent representative between clients and contractors, ensuring effective communication, alignment of technical objectives, and successful project execution.

Key Functions:

  • Acting as a liaison between operating companies and seismic contractors
  • Managing technical and commercial communications
  • Monitoring contractor performance and compliance with specifications
  • Supporting tendering processes, bid evaluations, and contract awards
  • Ensuring project delivery in accordance with agreed timelines and quality standards

Competitive Advantages

  • Independent and unbiased consultancy services
  • Extensive international experience in land and marine seismic operations
  • Full-cycle seismic project expertise (acquisition to interpretation)
  • Strong focus on quality control and optimization
  • Flexible and client-oriented service approach
  • Cost-effective solutions without compromising technical quality
  • Ability to act as both technical consultant and project representative

Health, Safety & Environment (HSE)

GeoSeS is committed to promoting safe working practices and minimizing environmental impact in all project activities. The company ensures that all operations comply with international HSE standards and client-specific requirements.

Conclusion

GeoSeS is committed to delivering reliable, innovative, and high-quality seismic exploration consultancy services. Through technical expertise, independent oversight, and strong industry experience, the company aims to be a trusted partner in supporting exploration success and reducing operational risk across global energy and resource projects.

At a Glance

Full Name
Yılmaz
Sakallıoğlu
Education
B.Sc.,
M.Sc.
Residence
Urla,
Izmir
Born
1954
Birthplace
Giresun,
Turkey

Curriculum Vitae — YILMAZ SAKALLIOGLU

Education

B.Sc. Degree in Geophysics
Istanbul University — Istanbul
1975 – 1980 5 Years

Determination of porosity, permeability, water and oil saturation by using of well logs data for the Well Camurlu-4 in the South East Turkey.

English Language Courses
Turkish American Association — Ankara
1984 – 1985 1 Year
M.Sc. Degree in Geophysics
Ankara University — Ankara
1990 – 1992 2 Years

Application of vibroseis sweep techniques in different geological media.

Work Experience

Field Seismologist
Turkish Petroleum Company (TPAO), Exploration Department — Ankara, Turkey
1980 – 1984 4 Years
Seismic Crew Party Chief
Turkish Petroleum Company (TPAO), Exploration Department — Ankara, Turkey
1985 – 1988 3 Years
Field and Processing Supervisor, QC Geophysicist
Turkish Petroleum Company (TPAO), Exploration Department — Ankara, Turkey
1989 – 1995 4 Years
Geophysical Operations Manager
Turkish Petroleum Company (TPAO), Exploration Department — Ankara, Turkey
1996 – 1998 2 Years
Seismic Data Acquisition and Processing QC Geophysicist
Turkish Petroleum Company (TPAO), Exploration Department — Ankara, Turkey
1999 – 2000 1 Year
Exploration Manager
Turkish Petroleum Overseas Company (TPOC), Libyan Branch — Libya
2000 – 2001 1 Year
Senior Staff Geophysicist
Waha Oil Company — Libya, Tripoli
2002 – 2010 8 Years
Senior Geophysical Coordinator
TransAtlantic Petroleum Ltd. — Istanbul, Turkey
2010 – April 2015 5 Years
Country Manager
BGP-GRI — Istanbul, Turkey
2015 – 2016 1 Year
Business Development Manager
BGP Inc. CNPC — Abu Dhabi, UAE
May 2017 – May 2024 7 Years
Seismic Data Acquisition & Processing Projects Manager
Murzuq Technical Services Limited (MTSL) — Tunis, Tunisia
July 2024 – Present

Photos from the Study Areas

Land Seismic Data Acquisition Training Program

A comprehensive training program covering all aspects of land seismic data acquisition, designed by Yilmaz Sakallioglu based on over four decades of field experience.

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