About SeiSyn

Born from subsurface experience. Built to connect geophysics and reservoir engineering.

SeiSyn was created from a recurring challenge observed across years of seismic and reservoir work: valuable subsurface evidence was distributed across disciplines, software environments and disconnected workflows.

The company brings together integrated software, specialist consulting, artificial intelligence, training and applied R&D to transform complex geoscience and reservoir information into better asset decisions.

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From seismic imaging to reservoir decisions.

The journey behind SeiSyn began with seismic processing and interpretation and evolved through acquisition, survey design, imaging, quantitative interpretation, rock physics and reservoir characterisation.

That experience expanded across onshore, offshore and ultra-deepwater environments, with extensive work on streamer and OBN data and increasingly complex 3D and 4D seismic workflows.

As the focus moved toward 4D reservoir monitoring, the question also changed. It was no longer only, “Can we image the reservoir better?” It became, “What changed in the reservoir, why did it change, and what decision should follow?”

Answering that question required connecting seismic evidence with wells, production, pressure, saturation, geology, rock physics and dynamic reservoir models.

Better images create insight. Connected evidence supports better decisions.

One reservoir. Two technical worlds.

Working directly with reservoir engineering and dynamic simulation made a recurring industry gap clear.

Geophysics and reservoir engineering often describe the same physical reservoir through different tools, assumptions, data structures and technical languages. Seismic can reveal evidence of change. Dynamic models can predict pressure and fluid movement. Production data can show reservoir response. Yet connecting these perspectives still requires repeated handoffs, exports, spreadsheets, specialist tools and manual reconciliation.

Geophysics

4D seismic
QI & inversion
Rock physics
Imaging

SeiSyn

Integrated context
Shared evidence
Traceable workflows
Physics to decision

Reservoir engineering

Dynamic models
Pressure & saturation
Production response
Model updates

The reservoir is one system. Its interpretation should not be fragmented across disconnected workflows.

Turning the gap into SeiSyn.

Recognising the challenge was not enough. Building on an existing programming foundation, software-engineering knowledge was deepened with a specific objective: to transform subsurface expertise into scalable technology.

The goal was not to move away from geoscience, but to create the technological capability needed to connect it more effectively with reservoir engineering.

That work evolved into SeiSyn. A stable technical career was left behind to focus full-time on building a company dedicated to integrated subsurface intelligence.

01
Industry experience
Understanding the integration challenge first-hand.
02
Software development
Translating domain knowledge into scalable technology.
03
SeiSyn
Connecting evidence, physics, reservoir models and decisions.

One project. One provenance chain. One shared reservoir context.

Technology backed by subsurface expertise.

SeiSyn combines an integrated software platform with specialist services that help teams solve complex subsurface problems, challenge technical assumptions and apply advanced workflows with confidence.

Integrated software

Traceable workflows connecting seismic evidence, reservoir physics, simulation, uncertainty and decisions.

Specialist consulting

Seismic acquisition, processing, 4D, quantitative interpretation, rock physics, reservoir monitoring and integrated reservoir studies.

Technical advisory & training

Independent technical review, project assurance, workflow design and knowledge transfer for multidisciplinary teams.

Applied R&D

Scientific software, AI-assisted workflows, automation and new subsurface technologies developed around real technical problems.

Explore our services

Consulting grounded in hands-on subsurface work.

SeiSyn’s consulting services are grounded in practical experience across the subsurface workflow, from seismic acquisition and processing to quantitative interpretation, 4D reservoir characterisation, rock physics, reservoir monitoring and dynamic-model integration.

This experience spans complex onshore, offshore and ultra-deepwater settings, including streamer, OBN and multidisciplinary reservoir workflows.

Acquisition & QC
Processing & Imaging
OBN & Streamer
4D Seismic
QI & Inversion
Rock Physics / PEM
Reservoir Integration
Technical Assurance

Supporting documentation

Professional experience, technical responsibilities and selected project history are supported by formal documentation. Relevant supporting evidence can be shared with prospective clients, partners and investors upon request, subject to confidentiality requirements.

06Founder

Carlos Jesus

Founder & Technical Lead

Carlos brings more than 18 years of international experience across seismic acquisition, processing, quantitative interpretation, 4D reservoir characterisation and reservoir engineering.

His experience spans onshore, offshore and ultra-deepwater settings, across different geographic regions and geological basins worldwide. He has worked with both siliciclastic and carbonate reservoirs in pre-salt and post-salt environments, using streamer and OBN seismic data in complex imaging, rock-physics, reservoir-monitoring and multidisciplinary interpretation workflows.

His experience integrating geophysical evidence with production data and dynamic reservoir models provided both the technical foundation and the industry insight from which SeiSyn was created.

Seismic & 4D · QI & Rock Physics · Reservoir Engineering · Software & R&D

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Let’s discuss your subsurface challenge.

Whether you are evaluating the SeiSyn Platform, planning a seismic or 4D project, looking for specialist technical support or developing a new energy technology, tell us what you are trying to solve.

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