GEOLOGIA DE EXPLORACION Y SINTESIS SL

What GEOLOGIA DE EXPLORACION Y SINTESIS SL does

GESSAL (Geología de Exploración y Síntesis, S.L.) is a privately held Spanish geological and geophysical consulting firm founded in 1987 and headquartered in Madrid at Calle de la Toronga 26. The company provides integrated subsurface services across three lines: Geosciences (regional exploration assessment, seismic interpretation, petrophysical analysis, well log analysis, geochemical modeling, sequence stratigraphy, structural geology, and petroleum system evaluation), Drilling Engineering (design, planning, and technical supervision of deep onshore and offshore wells including drilling, workover, and well testing roles at engineer, superintendent, supervisor, and mud logger levels), and Engineering Services (conceptual, basic, and detail engineering plus technical assistance such as SAP, Cost Control, HSE supervision, procurement, and logistics across Oil & Gas, petrochemical, power, and chemical plants). Customers include major Spanish energy incumbents (Repsol, Cepsa, Iberdrola, Endesa, Enagás, Gas Natural Fenosa, Storengy), global oilfield services (Schlumberger), and government agencies (ENRESA for radioactive waste, IGME for geological research, Ministerio de Industria Energía y Turismo).

The company's core technology is human-delivered subsurface expertise supported by industry-standard software platforms including Petrel, Geographix, Petrosys, Lynx, Winlog, ArcGIS, Landmark, and GeoQuest, used for seismic interpretation, petrophysical analysis, geological modeling, well log digitization, and stratigraphic correlation. The firm also runs an E&P technical data management service covering subsurface data in digital and hard-copy formats including conversion, vectorization, and quality control. Beyond core hydrocarbon exploration, GESSAL operates a service portfolio spanning underground gas storage (salt caverns and deep aquifers), high-level radioactive waste storage characterization, CO2 geological storage, deep hydrogeology, mining resource evaluation, geothermal energy feasibility, drilling engineering projects, training and R&D, and petroleum systems field trips. Since 2006, a wholly-owned subsidiary, Geociencias Aplicadas al Subsuelo S.L., has centralized CO2 storage research and non-hydrocarbon projects.

GESSAL operates a B2B professional services model with project-based engagements tailored to client requirements and priced on a scope-defined basis (no public pricing disclosed). The go-to-market is enterprise field sales through direct professional engagement, supplemented by the corporate website (gessal.com, available in Spanish and English) and a Facebook presence. Delivery is by a multidisciplinary team of 40+ professionals deployable from the Madrid headquarters to client premises across Europe (Spain, Portugal, UK), the Americas (Argentina, Venezuela, Guatemala, Cuba, Greenland), Africa (Algeria, Tunisia, Libya, Nigeria, Congo), and the Middle East (Kuwait). Revenue is not publicly disclosed; the only disclosed capital inflow is a non-dilutive €3,347,518 CDTI grant received in 2021 to participate in the UNDERGY consortium (2021-2024) on seasonal renewable energy storage with green hydrogen integrated into smart grids, against a total project budget of €5,525,702.

Name

GEOLOGIA DE EXPLORACION Y SINTESIS SL

Legal name

GEOLOGIA DE EXPLORACION Y SINTESIS, S.L.

Website

https://gessal.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

11–50 employees

Short description

GESSAL is a privately held Spanish geological and geophysical consultancy founded in 1987, providing integrated subsurface services including seismic interpretation, petrophysical analysis, drilling engineering supervision, and 3D geological modeling to oil & gas majors, energy companies, and government agencies across 14+ countries.

Ownership category

akta.pro rank

Product category

Geological and Geophysical Consulting Services

NAICS

Geophysical Surveying and Mapping Services (54136), Geophysical Surveying and Mapping Services (541360)

SIC

Oil & Gas Field Exploration Services (1382), Drilling Oil & Gas Wells (1381)

akta.pro industry

PRIMARYEUALAAAA

Exploration & Prospecting (Geology, Geophysics, Seismic)

Energy, Utilities & Environment/Oil & Gas (Upstream, Midstream, Downstream and Refining)/Upstream Exploration & Production (E&P)

SECONDARYEUALABAK

Seismic & Geoscience Services (Acquisition, Processing, Interpretation)

Energy, Utilities & Environment/Oil & Gas (Upstream, Midstream, Downstream and Refining)/Oilfield Services & Drilling (OFS)

SECONDARYEUALAAAC

Field Development Planning & Subsurface Reservoir Engineering

Energy, Utilities & Environment/Oil & Gas (Upstream, Midstream, Downstream and Refining)/Upstream Exploration & Production (E&P)

Keywords

• Geological consulting services
• Subsurface geophysics
• Oil and gas exploration
• Drilling engineering supervision
• Underground storage characterization

Headquarters

HQ city

Madrid

HQ country

Spain

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Professional Consulting Services: B2B professional services model providing geological, geophysical, and engineering consulting to Oil & Gas companies and energy sector clients. Services are delivered through multidisciplinary professional teams tailored to client project requirements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

GESSAL is a geological and geophysical consultancy providing integrated subsurface services for the Oil & Gas and energy sectors. Its core offerings span Geosciences (seismic interpretation, petrophysical analysis, geochemical modeling, geological field synthesis, 3D modeling), Drilling Engineering (deep well design, supervision, and workover operations), and Engineering Services (conceptual, basic, and detail engineering). Project-based engagements include hydrocarbon exploration, underground gas storage, CO2 storage, radioactive waste repository characterization, deep hydrogeology, geothermal feasibility, mining resource evaluation, and E&P data management.

Product overview

GESSAL is a geological and geophysical consulting company offering integrated professional services across three main areas: Geosciences (subsurface geological research, seismic interpretation, petrophysics, geochemistry, petroleum system evaluation), Drilling Engineering (deep well drilling, supervision, and workover operations), and Engineering Services (conceptual, basic, and detail engineering). The company provides specialized project services including hydrocarbon exploration, underground gas storage, CO2 storage, radioactive waste repository characterization, hydrogeology, geothermal energy, mining resources, data management, training/R&D, and field trips. GESSAL also offers software services utilizing industry-standard tools including Petrel, Geographix, Petrosys, Lynx, Winlog, and ArcGIS. The product portfolio operates as a consultancy service model rather than a software platform, with the recent UNDERGY Project expanding into renewable energy storage research.

Differentiator

Problem solved

Functional benefit

Products and services

• Geosciences Services Comprehensive subsurface geological and geophysical services including regional exploratory assessment, seismic interpretation, petrophysical interpretation, well log analysis, geochemical modeling, and petroleum system evaluation for Oil & Gas and energy sector clients.
• Drilling Engineering Services Engineering and supervision services for deep well drilling including design, planning, technical supervision, and equipment maintenance for onshore and offshore Oil & Gas operations.
• Engineering Services Full range of engineering services covering conceptual, basic, and detail engineering across Oil & Gas, petrochemical, drilling, power plants, chemical plants, and industrial sectors.
• Hydrocarbon Exploration Evaluation and exploration of hydrocarbons including seismic interpretation, geochemical modeling, well analysis, reservoir characterization, structural modeling, and prospect evaluation for Oil & Gas operators.
• Underground Gas Storage Research and selection of underground gas storage formations using geological field synthesis, seismic interpretation, petrophysical analysis, and 3D static modeling for energy storage operators.
• Radioactive Waste Storage Characterization Research and characterization projects for selection of high-level radioactive waste repositories in sedimentary areas, granite, and other impermeable formations for nuclear waste management entities.
• CO2 Storage Site Selection Selection of underground CO2 storage sites through geological field synthesis, seismic interpretation, petrophysical analysis, reservoir-seal characterization, and 3D modeling for carbon capture and storage developers.
• Geothermal Energy Feasibility Analysis and evaluation of subsurface information for exploration and feasibility of geothermal energy resources for energy companies and industrial users.
• Deep Hydrogeology Exploration of deep aquifers for freshwater resources including characterization of permeable-impermeable formations, 3D geological modeling, and exploratory planning for water resource and government clients.
• Mining Resource Evaluation Research and evaluation of underground mining resources focused on expansion of new mineral exploration areas in sedimentary regions for mining sector clients.
• Drilling Engineering Projects Supervision of vertical and directional drilling of deep wells for hydrocarbons, gas storage, CO2 storage, and geothermal applications.
• E&P Data Management E&P technical information management focused on subsurface data in digital and hard copy formats, including conversion and quality control services for exploration and production clients.
• Training and R&D Professional training programs and research and development projects in subsurface geology and geophysics, including Masters, seminars, workshops, and field trips for energy industry professionals.
• Geological Field Trips Petroleum Systems review field trips in conventional hydrocarbon exploratory areas including gas systems for unconventional tight gas and shale gas for industry professionals and researchers.
• Geoscience Software Services Advanced geological and geophysical software services including petrophysical analysis, seismic interpretation, well log digitization, seismic vectorization, static storage modeling, and stratigraphic correlations using industry-standard tools (Petrel, Geographix, Petrosys, Lynx, Winlog, ArcGIS, Landmark, GeoQuest).
• Oil & Gas Engineering Projects Engineering projects primarily in the Oil & Gas sector including platform engineering, procurement, construction, installation, and revamping of drilling modules for energy operators.
• UNDERGY Project (Seasonal Renewable Energy Storage with Green Hydrogen) Research on technologies for seasonal renewable energy storage with green hydrogen integrated into smart grids, funded by CDTI with €3,347,518 grant as part of a consortium of 6 companies and 9 research groups.

Named customers11 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• UNDERGY Consortium PartnerscoreStrategic or Co-development Partner · 1 January 2021UNDERGY project brings together 6 expert companies and 9 leading research groups combining synergies to cover the entire value chain in fields of knowledge required for seasonal renewable energy storage with green hydrogen technology development.

Scale indicators5 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• SLB (formerly Schlumberger): Global oilfield services and geoscience giant providing seismic interpretation, petrophysical analysis, and drilling services. GESSAL's listed technical assistance work for Schlumberger demonstrates direct overlap in subsurface consulting capabilities, though Schlumberger operates at vastly larger scale.
• Halliburton (Landmark / Halliburton Consulting): Major oilfield services provider with geoscience consulting and decision-space software (DecisionSpace, Landmark). Comparable in subsurface consulting services for exploration and reservoir characterization, though operating at global scale with proprietary software platforms rather than third-party tools.
• Wood plc (formerly Amec Foster Wheeler / Wood Group): UK-headquartered engineering and consulting firm serving energy and industrial markets. Comparable to GESSAL's engineering services portfolio (conceptual, basic, detail engineering) and Oil & Gas consulting, including subsurface-related projects.

Emerging players

• Paradigm (Emerson E&P Software): Subsurface interpretation and reservoir modeling software provider, now part of Emerson. Overlaps with GESSAL's seismic interpretation and geological modeling capabilities through technology that GESSAL itself uses (Petrel competitor).

Direct peers

• TGS (TGS-NOPEC Geophysical Company): Norwegian geoscience data provider offering multi-client seismic libraries, well data, and subsurface imaging products. Overlaps with GESSAL's data management and seismic interpretation services, particularly for European offshore exploration where TGS holds strong data assets.
• Beicip-Franlab: French geoscience consultancy specializing in basin modeling, reservoir characterization, and exploration studies. Comparable to GESSAL's integrated geosciences services including petroleum system evaluation and seismic interpretation.
• IES (Integrated Exploration Services): Boutique Spanish geological and geophysical consultancy providing subsurface studies, reservoir characterization, and exploration services for Iberian and Latin American Oil & Gas operators. Closest peer in scale, geography, and service mix.
• RPS Group (TPA and E&P consulting): UK-based consultancy providing energy and environmental consulting services including subsurface and reservoir studies. Comparable mid-sized professional services peer with similar energy sector focus and European footprint.
• AGR (Well Management & Reservoir): Norwegian well engineering and reservoir management consultancy providing drilling supervision and subsurface services. Directly comparable to GESSAL's drilling engineering and petrophysical/reservoir consulting offerings, with similar European Oil & Gas client base.
• CGG (Compagnie Générale de Géophysique): French-headquartered geophysical services company specializing in seismic data acquisition, processing, and subsurface imaging for Oil & Gas exploration. Directly comparable to GESSAL's core seismic interpretation and geoscience offerings, with both firms serving E&P operators across Europe and internationally.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/gessal.exploracionsintesis
• LinkedInlinkedin.com/company/geologia-de-exploracion-y-sintesis-sl

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GEOLOGIA DE EXPLORACION Y SINTESIS SL